Hoffman G28 - Heating HP - Free user manual and instructions

USER MANUAL Hoffman G28 HP

Image of an industrial air conditioner unit with visible Chinese text labels on its side panel.

SPECTRACOOL

AIR CONDITIONER

G28 MODEL

INSTRUCTION MANUAL

DESIGN WITH CONFIDENCE

TABLE OF CONTENTS

RECEIVING THE AIR CONDITIONER....3

HANDLING AND TESTING THE AIR CONDITIONER 3

HOW TO READ MODEL NUMBERS 3

TECHNICAL INFORMATION 4

Sequence of Operation 4

Heating....4

Standard and Optional Component Operation 4

Thermostat 4

Remote Access Control (optional) 4

Head Pressure Control (optional) 4

Contactor (460V Units only)....4

Overload (460V Units only) 4

Phase Monitor 5

460V to 230V Transformer....5

115V/230V to 10V Transformer (optional)....5

115V/230V to 24V Transformer and Relay [optional]....5

Schematics and Wiring Diagrams for Thermostat Control 5

4000 BTU 1-Phase Schematic (actual unit options may vary)....5

6000 BTU 1-Phase Schematic (actual unit options may vary)....6

G28 Generic 3-Phase Schematic (actual unit options may vary) 6

4000 BTU 1-Phase Wire Diagram (actual unit options may vary)....7

6000 BTU 1-Phase Wire Diagram (actual unit options may vary) 8

G28 Generic 3-Phase Wire Diagram (actual unit options may vary)....9

DIMENSIONAL DRAWINGS....10

4000 BTU 115V With Thermostats .... 10

6000 and 4000 BTU 230V With Thermostats ....11

G28 Generic 460V With Thermostats....11

INSTALLATION INSTRUCTIONS....12

REMOTE ACCESS CONTROL (optional) 13

INTRODUCTION 13

ENERGIZING THE CONTROLLER....13

CONTROL STATUS INDICATION....13

DISPLAYING AND CHANGING PROGRAM VARIABLES....14

ALARM INPUT CONNECTION 15

ALARM CONDITION DISPLAY....15

AIR CONDITIONER UNIT COMMUNICATION FEATURES....15

USB COMMUNICATION....15

ETHERNET COMMUNICATION 15

USING THE PC INTERFACE TOOL....16

USB COMMUNICATION MODE....16

ETHERNET COMMUNICATION MODE 17

Remote Access Control Pin-out 18

Schematics and Wiring Diagrams for Remote Access Control....19

4000 BTU 1-Phase Schematic (actual unit options may vary)....19

6000 BTU 1-Phase Schematic (actual unit options may vary)....19

G28 Generic 3-Phase Schematic (actual unit options may vary)....20

4000 BTU 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary)....21

6000 BTU 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary)....22

G28 Generic 3-Phase Wire Diagram for Remote Access Control (actual unit options may vary)....23

DIMENSIONAL DRAWINGS 24

4000 BTU 115V With Remote Access Control....24

4000 and 6000 BTU 230V With Remote Access Control....24

INSTALLATION INSTRUCTIONS WITH REMOTE ACCESS CONTROL....25

MAINTENANCE 26

Compressor 26

Inlet Air Filter 26

How To Remove, Clean or Install a New Inlet Air Filter 26

Condenser and Evaporator Air Movers 27

Refrigerant Loss....27

Refrigerant Properties Chart (R 407c)....28

Refrigerant Properties Chart (R 134a)......28

Functional Data....29

4000/6000 BTU Unit Characteristics....30

SERVICE DATA....31

Components List 31

TROUBLE SHOOTING 32

Basic Air Conditioning Trouble Shooting Check List - Thermostat Version 32

Symptoms and Possible Causes - Thermostat Version....33

Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version 34

Symptoms and Possible Causes - Remote Access Control Version 36

WARRANTY 38

RETURN AND REPAIR POLICY 38

LIMITATION OF LIABILITY 39

RECEIVING THE AIR CONDITIONER

Inspect the air conditioner. Check for concealed damage that may have occurred during shipment. Look for dents, scratches, loose assemblies, evidence of oil, etc. Damage evident upon receipt should be noted on the freight bill. Damage should be brought to the attention of the delivering carrier -- NOT to Pentair Equipment Protection -- within 15 days of delivery. Save the carton and packing material and request an inspection. Then file a claim with the delivering carrier.

Pentair Equipment Protection cannot accept responsibility for freight damages; however, we will assist you in any way possible.

HANDLING AND TESTING THE AIR CONDITIONER

If the air conditioner has been in a horizontal position, be certain it is placed in an upright, vertical or mounting position for a minimum of five (5) minutes before operating.

CAUTION

Do not attempt to operate the air conditioner while it is horizontal or on its side, back or front. The refrigeration compressor is filled with lubricating oil. This will cause permanent damage to the air conditioner and also voids the warranty.

TEST FOR FUNCTIONALITY BEFORE MOUNTING THE AIR CONDITIONER TO THE ENCLOSURE.

Refer to the nameplate for proper electrical current requirements, and then wire the unit to a properly grounded power supply using copper conductors only. Power supply wiring should be restrained after field installation to ensure no contact with internal fan. Minimum circuit ampacity should be at least 125% of the amperage shown on the unit nameplate. No other equipment should be connected to this circuit to prevent overloading

Immediately after applying power, the evaporator blower (enclosure air) should start running. Operate the air conditioner with the compressor running for five (5) to ten (10) minutes. You will need to set the cooling thermostat or controller setpoint below the ambient temperature to operate the compressor.

Condenser air temperatures should be warmer than normal room temperatures within a few minutes after the condenser impellers start.

See Sequence of Operation on page 4 for specifics on how the unit operates when powered up.

HOW TO READ MODEL NUMBERS

G28 06 4 6 G150
1 2 3 4 5

1. Identifies the type/family of air conditioner and the approximate height (i.e. G28 = Global family about 28 inch high).
2. This is the air conditioner's listed capacity in BTU/Hr. at rated conditions. (i.e. 06=6,000 BTU/Hr. at 131/131 F)
3. 1 = 115 Volt, 2 = 230 Volt, 4 = 460 Volt.
4. 6 = 50/60 Hz or 60 Hz only.
5. Unique set of numbers for each air conditioner which identifies the accessories on a model.

TECHNICAL INFORMATION

The air conditioner comes standard with two internally mounted thermostats or remote access control. There are two modes of operation; heating and cooling. During heating and cooling modes the evaporator fan will be running.

HEATING

When the enclosure temperature is below the heating thermostat setpoint, power is applied to the heaters. When the enclosure temperature is 10 degrees above the setpoint the heater is powered off.

COOLING

When the enclosure temperature is above the cooling thermostat setpoint, power is applied through the thermostat. The compressor is then energized either directly or through a contactor if unit requires one. The condenser impellers will start immediately if the unit is not equipped with an optional head pressure control switch. If the unit is equipped with an optional head pressure control switch, the condenser impellers will start once the refrigerant pressure reaches the setting of the switch. Component specific information is listed below.

Operating the air conditioner below the minimum ambient temperature or above the maximum ambient temperatures indicated on the nameplate voids all warranties. DO NOT set the enclosure thermostat to a temperature lower than 70 F. Doing so can increase the likelihood of frost buildup on the evaporator coil.

The moisture that the enclosure air can contain is limited. If moisture flows from the drain tube continuously this can only mean that ambient air is entering the enclosure. Be aware that frequent opening of the enclosure's door admits humid air that the air conditioner must then dehumidify.

STANDARD AND OPTIONAL COMPONENT OPERATION

THERMOSTAT

The standard G28 air conditioner uses our standard 10-1061-16 thermostat. The thermostat setpoint equals the temperature that the air conditioner turns off. The thermostat has a 10 F differential from setpoint until it calls for cooling or heating. An example of operation is shown below.

FOR COOLING (75-100 F RANGE):

• Thermostat setpoint = 80 F
• Cooling turns on at 90 F
• Cooling turns off at 80 F

FOR HEATING (55-65 F RANGE):

• Thermostat setpoint = 55 F
• Heating turns on at 55 F
• Heating turns off at 65 F

NOTE: For testing purposes only, the thermostat stop screw may be removed (on units so equipped) to allow settings below 70 F. After testing, replace the stop screw and verify that the thermostat cannot be set below 70 F. Extended operation below 70 F can cause coil freeze ups resulting in reduced load and/or unit damage.

REMOTE ACCESS CONTROL (OPTIONAL)

See REMOTE ACCESS CONTROL (optional) on page 13

HEAD PRESSURE CONTROL (OPTIONAL)

Unit is set at the factory, no adjustment necessary.

At a saturated condenser temperature of 85 F (95 psig), the condenser fans will power off. At a saturated condenser temperature of 118 F (165 psig), the condenser fans will power on.

CONTACTOR (460V UNITS ONLY)

The contactor on this model uses a 230V coil.

OVERLOAD (460V UNITS ONLY)

Set overload reset setting to automatic "A" and trip point dial to 1.6A.

PHASE MONITOR

This product is equipped with Phase/Voltage Protection. Please verify correct phasing and voltage before operating. Note the fans may still operate if phasing is incorrect, but the compressor will not, so the unit will not cool. Illuminated light on Phase Monitor indicates phase is correct.

If the light is not illuminated, disconnect power from the unit and swap any two power leads at the terminal block. This should correct the phasing. The light should now illuminate when power is reapplied.

460V TO 230V TRANSFORMER

The 230V from this transformer powers the fans, contactor and optional transformers. 460V is only used to run the compressor.

115V/230V TO 10V TRANSFORMER (OPTIONAL)

This transformer powers the thermal display on thermostat controlled units only.

115V/230V TO 24V TRANSFORMER AND RELAY (OPTIONAL)

The transformer and relay are used to operate the condenser blower and compressor by using a customer supplied, remote mounted door switch. This is not a safety door switch, but rather, only helps to reduce condensation at the evaporator coil if the door is opened. The unit will remain electrified when the door switch is operated with the evaporator fan continuing to operate, and potentially, if temperatures are low enough, the heater may continue to operate on outdoor models.

SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL 4000 BTU 1-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

L1 BRN L2 BLU SUPPRESSOR (OPT) TRANSFORMER W/ TEMP. DISPLAY (OPTIONAL) CUST. SWT. M ENCLOSURE FAN COMPR HTR (OPT) DOOR SWITCH TRANSFORMER & RELAY (OPTION) 24V R TSTAT HEATING, LIMIT SWITCHES & HEATER TSTAT COOLING AMBIENT IMPELLER W/HEAD PRESS. CTRL (OPTIONAL) START CAPACITOR START RELAY COMPRESSOR & OVERLOAD SR M SR

ELECTRICAL SCHEMATIC

89074302

6000 BTU 1-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

L1 BRN L2 BLU SUPPRESSOR (OPT) TRANSFORMER W/ TEMP. DISPLAY (OPTIONAL) CUST. SWT. M ENCLOSURE IMPELLER COMPR HTR (OPT) 24V R DOOR SWITCH TRANSFORMER & RELAY (OPTION) TSTAT HEATING, LIMIT SWITCHES & HEATER TSTAT COOLING AMBIENT IMPELLER W/HEAD PRESS. CTRL (OPTIONAL) HARD START RELAY RUN CAPACITOR START CAPACITOR COMPRESSOR & OVERLOAD ELECTRICAL SCHEMAIC 05-2001-196

G28 GENERIC 3-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

PHASE MONITOR RELAY (PM) GRND L1 L2 L3 R S T N N N VARISTORS AUTO-TRANSFORMER MOTOR STARTER (MS) COMPRESSOR (COMP) HEAD PRESSURE CONTROL (OPT.) OL MS CH COL DS PM CTS 24V DS TO CUSTOMER DOOR SWITCH (DS) (OPT.) EVAPORATOR IMPELLER CONDENSER IMPELLER CAP CAP

DASHED LINES REPRESENT OPTIONS
P/N 89098584

4000 BTU 1-PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

TO CUSTOMER SWITCH WHT63 WHT64 BLK60 115V 24V T'FORMER RELAY RED62 DOOR SWITCH (OPT.) YEL97 YEL65 YEL10 BLK60 BLK60 RED30 COOLING T-STAT RED13 BRN26 HEATING T-STAT BLK27 AUTO BLK28 MANL BLU29 LIMIT SWITCHES BLK14 WHT15 BLK CAPACITOR BLK20 BRN8 RED13 BLK14 BLU19 WHT7 SUPPRESSOR (OPTIONAL) BLK40 WHT41 THERMAL DISPLAY (OPT.) 115V 10V TO THERMAL DISPLAY POWER BLOCK BRN8 WHT61 WHT7 START CAPACITOR BLK BLK BLK4 BLK11 WHT5 COMP HTR OR C/E (OPTIONAL) RED(COM) YEL(NO) BLU(NC) MALF SWITCH (OPTIONAL) HEATER EVAPORATOR FAN AMB. CONDENSER IMPELLER GRN/YEL FOR HPC OPTION, TAKE BLK20 OUT AND CONNECT HPC LEADS TO WAGO #2 AND #7 HPC (OPTIONAL)

89077284

6000 BTU 1-PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

89081439 REV. C TO CUSTOMER SWITCH WHT63 WHT64 BLK60 120V WHT61 DOOR SWITCH (OPT.) RELAY RED62 1 0 4 2 YEL97 YEL10 SUPPRESSOR (OPTIONAL) THERMAL DISPLAY (OPT.) TO THERMAL DISPLAY BLK40 WHT41 BLK40 HEATING T-STAT RED30 BLK60 6 4 3 YEL10 YEL65 COOLING T-STAT RED13 YEL10 7 L1 BRN8 BLU9 POWER BLOCK BLK40 RED13 BLK14 L2 WR-T41 BLU19 WH-T7 HEATER BLK27 AUTO BLK28 MANO LIMIT SWITCHES BLU28 BLK14 3 BLU19 5 START RELAY ORG6 START CAP. BLK115V/WHT 235V BLK 115V/WHT 235V RED R RUN CAP. COMPRESSOR C S S YEL S RED R R BLK 115V/WHT 235V HPC (OPTIONAL) BLK 115V/WHT 235V COMP HTR OR C/E (OPTIONAL) 89081439

89081439

G28 GENERIC 3-PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

THERMAL DISPLAY OPTION TO THERMAL DISPLAY BLK40 N L BLK141 BLK40 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK14 BLK30 BLK15 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK30 BLK35 L3 (NO) L2 (C) L1 (NC) PHASE MONITOR L1 L2 L3 BRN20 BRN34 BRN36 BLK21 BLK35 BRN20 BLK21 BLK35 BRN34 BLK35 BRN20 BLK21 BLK35 BRN34 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN20 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35 BRN21 BLK21 BLK35

* FOR HEAD PRESSURE CONTROL (HPC) OPTION TAKE
BLK25 OUT AND CONNECT HPC LEADS TO WAGO #2
& MOTOR STARTER TERMINAL 14

DASHED LINES REPRESENT OPTIONS

P/N 89098666

DIMENSIONAL DRAWINGS 4000 BTU 115V WITH THERMOSTATS

NOTE: 1. APPROVE TO TYPE 3R/4/12. 2. MOUNTING GASKET SUPPLIED (NOT SHOWN).

6000 AND 4000 BTU 230V WITH THERMOSTATS

NOTE: 1. APPROVE TO TYPE 3R/M/12. 2. MOUNTING GASKET SUPPLIED (NOT SHOWN).

G28 GENERIC 460V WITH THERMOSTATS

15.05 [362.2] 98 [25] .65 (2) [16.4] 10.18 [255.6] 17.01 [432.1]

28.59 [726.2] CLEANAR ALUMINUM BEIND RE 89059479

WARM AIR OUT AMBIENT AIR IN ENCLOSURE AIR IN 11.38 [286.9] REMOVABLE HANGING TAIS COOL AIR OUT

57 [12.5] 13.67 [403.1] 1.26 [39.1] .91 [23.2] 7.55 [191.8] 4.64 [117.7] COOLING TIERMOSTAT 5.50 [165.1] [2] 6.50 [65.1] [2] 6.50 [65.1] [2] 5.13 [130.2] 10.83 [276] 19.32 [490.7] POWER INLET 6.13 [155.7] 6.87 [74.5] [2] 6.30 [160] 5.92 [142.2] OPTIONAL ACCESS PANEL. ONLY FOR UNITS WITH HEAIR? 124 20 UNC (11) MOUNTING ITEMS 14.00 [355.6] 15.24 [387.6]

NOTE: 1. APPROVE TO TYPE 3R/4/12. 2. MOUNTING GASKET SUPPLIED (NOT SHOWN).

INSTALLATION INSTRUCTIONS

1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See HANDLING AND TESTING THE AIR CONDITIONER on page 3.
2. Using the mounting gasket kit provided with the unit, install gaskets to the air conditioner, see Figure 1.
3. Mount air conditioner on enclosure taking care not to damage the mounting gasket. The mounting gasket is the seal between the air conditioner and the enclosure. Avoid dragging the air conditioner on the enclosure with the mounting gasket attached as this could cause rips or tears in the gasket and risk losing the water tight seal.
4. Allow unit to remain upright for a minimum of five (5) minutes before starting. CAUTION! Air conditioner must be in upright position during operation.
5. Refer to the nameplate for electrical requirements. Wire the unit to a properly grounded power supply. For 3 phase units, once power is applied, verify that phase monitor light is illuminated which indicates correct electrical phasing. Electrical circuit should be fused with slow blow or HACR circuit breaker.
6. Some air conditioners require a remote mounted thermostat. Wire the thermostat outputs to the appropriate terminals on the 24 VAC terminal strip by noting the locations on the correct wiring diagram.
7. Set thermostat for required cabinet temperature. Refer to Sequence of Operation on page 4 for thermostat adjustment and operation.

16.97 [431] φ 3[2 (11) [1,92] 7.55 [191,8] .55 [14](5) .28 [7,1](2) 1.21 (2) [32,3] 91 [23,21] 6.50 [165,1] 6.50 [165,1] (2) 28.50 [723,91] 10.1 [256,8] 15.31 [388,9] 13.47 [342,1] 10.50 [266,7] 5.30 [136,7] 15.00 [381] 6.13 [155,7] 6.30 [160] 6.87 [174,5] (2) 28100013 14.50 [368,3] 15.26 [387,6] 15.87 [403,1](4) 17.50 [444,5] 0.50 [12.7] φ0.500 [ø12 70] (4) 5.50 [139,7] 5.50 [139,7] 0.35 [8,9] 2.53 [64,3] 6.00 [152,4] 6.00 [152,4] 29.06 [738,1] 6.00 [152,4] 6.00 [152,4] 6.87 [174,5] (2) 29.76 [755,9] 1.88 [47,8] φ0.250 [ø6,35] (18) 1.88 [47,8] 0.36 [8,9] 18.20 [462,3] 89059115

Surface Mount Partial Recess Mount
Figure 1 Cut-out Drawing

REMOTE ACCESS CONTROL (OPTIONAL)

INTRODUCTION

The Remote Access Control is a parametric controller for the complete management of air conditioners. All settings are pre-programmed at the factory. Cooling/heating set-points, cooling/heating differential and high /low temperature alarm set-points can be adjusted by the user. Alarms are outputted through a relay contact and also can be accessed through an Ethernet connection utilizing SNMP, EtherNet/IP and Modbus TCP. A USB connection is also provided and can be used to interface with the controller utilizing Modbus RTU.

The controller is wired and programmed at the factory to be energized when power is supplied to the air conditioner.

CONTROL STATUS INDICATION

The display has numerous symbols that indicate if the controller is heating, cooling, alarming, if the compressor is enabled, and if the ambient fan is enabled. The 3 alpha-numeric characters further describe alarms and show the cabinet temperature by default.

-8.8.8 1 2 3 4 H G F E D C B A Prg mute clear Sel

SYMBOL COLOR	ICON ON ICON FLASHING
1 AMBER Compressor On Start-up Request
2,3,4 AMBER Not Used Not Used
A AMBER Compressor On Not Used
B	AMBER	Evaporator Fan On	Start-up Request
C AMBER Not Used Not Used
D AMBER Not Used Not Used
E	AMBER	Heater Active	Not Used
F	RED	Alarm Active	Not Used
G	AMBER	Controller Active	Not Used
H AMBER Not Used Not Used

DISPLAYING AND CHANGING PROGRAM VARIABLES

Access: To view and/or change parameters, press and hold the Prg and Sel buttons for greater than 5 seconds. Press the up or down arrow buttons until "22" is displayed, then press Sel button. When "S-P" is displayed, press Sel.

Navigation: Press up or down arrows to display sub-menus then press Sel to select the desired sub-menu. In the sub-menu, use up or down arrows to display parameters for viewing or changing and press Sel. Use Prg button to back out of menu levels as desired.

Adjust: Use the up or down arrows to change the parameter value then push Sel to save that setting. If Sel is not pressed, the change to the value will not be saved. Navigate to and change other parameters as desired. When finished, push Prg to back out of the sub-menus to the main menu.

NOTE: The display will revert to normal temperature display mode if no buttons are pressed for 60 seconds.

Parameter Default Value Range Description
r01 80 F 72 F to 120 F Cooling set-point
r02 7 F - Cooling differential
A04 50 F* 32 F to 60 F Heating set-point*
A05 7 F* - Heating differential*

Cooling turns on at r01 + r02, and off at r01
Heating turns on at A04, and off at A04 + A05
*Functional only on units with heater option

ALARM PARAMETERS

Parameter Default Value Description
P16	125 F	High Temperature Alarm
P19	40 F Low Temperature Alarm

DISPLAYING TEMPERATURE SENSOR #2

Sensor number 2, the air outlet or condenser coil sensor, can be viewed at any time by pressing the up or down arrow button on the front panel of the controller display. The display will revert to displaying temperature sensor number 1 (the AC inlet temperature) after 60 seconds. Both sensors can also be read through the Ethernet and USB connections.

COMPRESSOR RESTART TIME DELAY

A factory set 6 minute (360 second) restart delay exists to reduce residual back pressure before allowing the compressor to restart. The compressor will stay off for the entire restart duration after the compressor is disabled. A flashing "1" on the controller display will indicate the unit is in a compressor restart delay while calling for cooling.

ALARM OUTPUT CONTACT

The Remote Access Control has a normally open dry contact alarm output with a resistive load rating of 250 VAC at 3 amps. Two yellow 18 AWG wires located at the back of the air conditioner provide a connection to this output.

ALARM INPUT CONNECTION

The Remote Access Control can accept a dry contact/switch input via the two 18 AWG white wires located at the back of the air conditioner. This input is associated with the controller display alarm mnemonic TP (door open and/or smoke detected). [To use this feature, remove the splice connector connecting the two white wires and connect customer supplied enclosure door switch in its place.]

ALARM CONDITION DISPLAY

There are seven possible non-latching alarm conditions detectable by the controller and are indicated on the controller display. All alarms can also be accessed through the Ethernet and USB connections.

Alarm Mnemonic	Description Cause Result	Alarm Relay
TP General	Alarm	Door open and/or smoke detected	Unit turns off for duration of alarm	Relay Contacts Close
LA	High Pressure Warning	MALF high pressure switch opens	No effect on function N/A
E1	Air Inlet Temperature Sensor Alarm	Sensor Failure	Unit turns off for duration of alarm	Relay Contacts Close
E2	Air Outlet Temperature Sensor Alarm	Sensor Failure	Unit turns off for duration of alarm	Relay Contacts Close
Ht	High Temperature Alarm Default = 125 F	Cabinet over temperature Alarm clears at default setting -2 F	No effect on function R	Relay Contacts Close
Lt	Low Temperature Alarm Default = 40 F	Cabinet under temperature Alarm clears at default setting +27 F	No effect on function N/A
A1 Frost Alarm		Evaporator coil frozen Alarm clears at 59 F	Compressor and Evaporator fan off for duration of alarm	Relay Contacts Close

AIR CONDITIONER UNIT COMMUNICATION FEATURES

Air conditioner units equipped with communication capabilities provide SNMP, EtherNet/IP and Modbus TCP protocols through Ethernet and Modbus RTU protocol via USB. Hoffman® Cooling has a PC Interface Tool available for download that can utilize either mode to communicate with the air conditioner unit.

USB COMMUNICATION

This communication mode allows direct connection of a PC to the air conditioner unit. The protocol supported is Modbus RTU. Use the PC Interface Tool to communicate with the air conditioner unit. A MINI-b USB connection is provided.

ETHERNET COMMUNICATION

This communication mode allows remote connection to the air conditioner unit using SNMP, EtherNet/IP and Modbus TCP protocols. Customers using their own software can download a MIB file for SNMP, EDS file or EtherNet_IP Object file for EtherNet/IP and Coil_Register file for Modbus TCP.

Note: ACU has a default IP Address of 192.168.1.2

Both Ethernet and USB communication modes allow the ability to:

• Read ACU inlet and outlet air temperatures
• Read and change Cooling Set-point and Cooling Differential
• Read and change Heating Set-point, Heating Differential
• Read and change High and Low Temperature Alarm Settings
• Read and change Gateway IP Address, Device IP Address, Subnet Mask, Trap IP Address and Community
• Read and change Unit Identification
• Read and change the state of IP addressing (static or dynamic)
• Read current Alarm Status

SOFTWARE AND CONFIGURATION FILE DOWNLOADS

The PC Interface Tool, MIB file, EDS file, EtherNet_IP Object file and Coil_Register file can be downloaded from www.hoffmanonline.com.

USING THE PC INTERFACE TOOL

The PC Interface Tool gives the user the ability to communicate with the air conditioner unit to read/write parameters using either Ethernet or USB connections.

USB COMMUNICATION MODE

NOTE: Before connecting unit to the PC, make note of the comm ports present. After the unit is connected to the PC, a new comm port will be added to the list. Use this new comm port.

• From Tools menu select Use Ethernet
- When Use Ethernet is unchecked, then Comm Port menu is enabled, Device IP and Community boxes are not shown, and USB communication can be used
• To set the comm port, choose Comm Port from the Tools menu and then select the comm port from the combo box

VIEWING AIR CONDITIONER UNIT VALUES

To view Air Conditioner Unit values

• Select the ACU Values tab
- Select the Enable Comm button (the PC Interface will now be communicating with unit)
• To stop communication select the Disable Comm button

CHANGING AIR CONDITIONER UNIT VALUES

To change ACU Values

• Select the Settings tab
- Select the value to change
• Make the change to the value
- Select the Change Setting button
• Change can be verified in ACU Values tab

VIEWING AND CHANGING ETHERNET INFORMATION

To view and change Ethernet Information

• Select Ethernet Info tab

To view Ethernet Information

- Click Read Ethernet Info button

To change to dynamically assigning IP Address Mode

• Check Use DHCP Server checkbox

• Enter Trap IP Address and Community

- Click Load Ethernet Info button

To change to statically assigning IP Address Mode

• Uncheck Use DHCP Server checkbox
• Enter Device IP Address, Subnet Mask, Gateway IP Address, Trap IP Address and Community
- Click Load Ethernet Info button

ETHERNET COMMUNICATION MODE

• From Tools menu select Use Ethernet
- When Use Ethernet is checked, Comm Port selection is disabled, Device IP and Community boxes are shown and Ethernet communication can be used.
- Enter unit's IP Address and Community string in Device IP and Community boxes at the bottom of the PC Interface Tool.

Each unit has two community strings. One is a Read/Write community string (defaulted to 'private') that can be changed by the customer (must be 4 to 8 characters long). The other is a Read-Only community string ('public') and cannot be changed.

VIEWING AIR CONDITIONER UNIT VALUES

To view Air Conditioner Unit values

• Select the ACU Values tab
- Select the Enable Comm button (the PC Interface will now be communicating with unit)
• To stop communication select the Disable Comm button

CHANGING AIR CONDITIONER UNIT VALUES

To change ACU Values

• Select the Settings tab
- Select the value to change
• Make the change to the value
• Select the Change Setting button
• Change can be verified in ACU Values tab

VIEWING AND CHANGING ETHERNET INFORMATION

To view and change Ethernet Information

• Select Ethernet Info tab
To view Ethernet Information
- Click Read Ethernet Info button

To change to dynamically assigning IP Address Mode

• Check Use DHCP Server checkbox
• Enter Trap IP Address and Community
- Click Load Ethernet Info button

To change to statically assigning IP Address Mode

• Uncheck Use DHCP Server checkbox
• Enter Device IP Address, Subnet Mask, Gateway IP Address, Trap IP Address and Community
- Click Load Ethernet Info button

ALARM LOG ACCESSIBLE WITH SNMP

• Using custom software with the provided MIB file gives the ability to view a log of the last 25 alarms

REMOTE ACCESS CONTROL PIN-OUT

	FUNCTION NAME PIN # WIRE #
U1 OUTPUTS	COOL No1 1 ORG78
		C1/2 2 BLK
	HEAT No2 7 BRN76
		C1/2 3 BLK
	ENCL MI No3 8 BLK77
		C3/4 4 BLK
	NA No4 (na) 9 BLK
		C3/4 10 BLK
	ALARM RELAY OUTPUT	No5	12	YEL39
		C5	6	YEL38
	NA	x	5	NA
	NA	x 11	NA
U2 INPUTS	ALARM INPUT CONNECTION	ID1	8 WHT63
	MALFUNCTION NC SWITCH	ID2	1	BLU88
	NA	ID3 (na)	9	BLU
	NA	ID4 (na)	2	BLU
	NA	ID5 (na)	10	BLU
	DIGITAL INPUT GROUND	ID GND	3	BLU
	NA	Y (na) 4	NA
	NA	GND (na)	5	NA
	T1, EVAP IN THERMISTOR	B1	13 RED
	T2, EVAP OUT THERMISTOR	B2	12 RED
	T1, T2 GND	GND	6	WHT
	NA	B3	11 NA
	CONTROLLER POWER	G	7	BLK40
	CONTROLLER POWER	G0	14	WHT41
U3 DATA	POWER		1 RED
	GROUND		2 BLACK
	DIRECTION		3	GREEN
	DATA		4	WHITE

SCHEMATICS AND WIRING DIAGRAMS FOR REMOTE ACCESS CONTROL

4000 BTU 1-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

L1 BRN L2 BLU SUPPRESSOR (OPT.) CONTROLLER POWER TRANSFORMER FUSE RECTIFIER COMPR HEATER OR COND. EVAP. (OPT.) ENCLOSURE FAN SUPPRESSOR (3) LIMIT SWITCHES AND HEATER CONTACTOR VARISTOR (3) HEATER LOCKOUT CUST ALARM R2 R1 R2 AMBIENT IMPELLER W/OPTIONAL HPC START CAPACITOR COMPRESSOR & OVERLOAD 24VAC POWER OUTPUTS NO4 C34 NO3 C34 C12 NO1 C12 NO2 NO5 C5 INPUTS B1 ENC TEMP B GND COM B2 EVAP TEMP ID2 MALF ID1 CUST SW ID3 ID4 ID5 ID GND KEY/SPV 24VAC PWR ETHERNET USB COMMUNICATION BOARD ELECTRICAL SCHEMAIC

89084976

6000 BTU 1-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

24VAC POWER OUTPUTS NO4 C34 NO3 C34 C12 NO1 C12 NO2 NO5 C5 INPUTS B1 B GND B2 ID2 ID1 ID3 ID4 ID5 ID GND KEY/SPV L1 BRN L2 BLU SUPPRESSOR (OPT.) CONTROLLER POWER TRANSFORMER FUSE RECTIFIER COMPR HEATER OR COND. EVAP. (OPT.) ENCLOSURE IMPELLER SUPPRESSOR (3) LIMIT SWITCHES AND HEATER CONTACTOR VARISTOR (3) HEATER LOCKOUT AMBIENT IMPELLER W/OPTIONAL HPC START RELAY RUN CAPACITOR START CAPACITOR COMPRESSOR & OVERLOAD 24VAC PWR ETHERNET KEY/SPV COMMUNICATION BOARD USB ELECTRICAL SCHEMAIC

89084977

G28 GENERIC 3-PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

GRND L1 L2 L3 R0 S0 T0 VARISTOR AUTOTRANSFORMER RECTIFIER 230V 460V FUSE 24VAC POWER OUTPUTS NO4 C3/4 C3/4 C1/2 C1/2 NO1 PHASE MONITOR CONTACTOR SUPPRESSOR (3) HPC VARISTOR PHASE MONITOR RELAY MTR EVAPORATOR IMPELLER CAP MTR CONDENSER IMPELLER 1 CAP CIRCUIT BREAKER COMPRESSOR MTR ELECTRICAL SCHEMAIC ETHERNET 24VAC PWR USB KEY/SPV COMMUNICATION BOARD KEY/SPV 89080128

4000 BTU 1-PHASE WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY)

CONTROLLER BOX YEL 38 YEL 39 UC2SE CONTROLLER BLU88 WHT WHT WHT63 U1 1 2 3 4 5 6 7 8 9 10 11 12 U3 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 ORG78 BLK BLK BLK BLK BLK75 BLU BLU BLU BLU BLU WRIT64 RED62 BLU BLU BLU BLU WHT64 RED RED FUSE RECTIFIER WH741 RLK40 RGRY96 T'FORMER RLK60 RGRY78 WHT58 WHT59 WHT61 WHT72 WHT37 VARISTOR CONTACTOR BRN87 VARISTOR WHT69 SUPPRESSOR BLK BRN68 WRH70 BLK27 AUTO BRN28 BLK28 MANO LIMIT SWITCHES BLU28 HEATER ENCLOSURE FAN BLK77 WHT15 BLU24 BLU19 4 1 BLK CAPACITOR #1 2 BLK20 OR HPC BLK20 OR HPC HPC (OPTIONAL) COMP HTR OR C/E (OPTIONAL) BLK15V \ WHT 230V BLK-1.5V \ WHT 230V BLK-1.5V \ WHT 230V START CAPACITOR BLK60 BLK89 RED13 L1 BLK60 BLK89 RED13 L2 WRHT61 BLU19 L2 POWER BLOCK RED WHT UPPER THERMISTOR T1 RED WHT LOWER THERMISTOR T2 AMB. ENC. ENCLOSURE DOOR SWITCH WHT83 WHT84 . AMBIENT IMPELLER #2 BLK BLU BRN BRN/YEL * BLK 115V \ WHT 230V

6000 BTU 1-PHASE WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY)

CONTROLLER BOX YEL38 YEL39 UC2SE CONTROLLER BLUBB WHT WHT WHT63 U1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ORG78 BLK BLK BLK BLK BLK75 U3 1 2 3 4 U2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 RED RED FUSE REOTIFIER BLK40 WR741 BRN76 BRN87 USB AND RJ45 COMMUNICATIONS CONNECTION U4 U5 U6 U7 U8 U9 U10 U11 U12 U13 U14 U15 U16 U17 U18 U19 U20 U21 U22 U23 U24 T'FORMER BLK60 WHT58 WHT59 WHIT61 WHIT72 *R\W VARISTOR *R\W WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR769 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR768 WR765 YEL65 RELAY VARISTOR *B\W *B\W WHT69 BLK BLK BRN87 SUPPRESSORI BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLk BLlklBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBL KLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBLKLBlkLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLlLRLsLrLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrlsLrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls Lrls LmlnAmpBENT IMPELLER #2 BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI BIKI C S R HPC (OPTIONAL) COMP HTR OR C/E (OPTIONAL) COMPRESSOR 89085046

G28 GENERIC 3-PHASE WIRE DIAGRAM FOR REMOTE ACCESS CONTROL (ACTUAL UNIT OPTIONS MAY VARY)

CONTROLLER BOX YEL38 U1 UC2SE CONTROLLER BLUBB WHT WHT WHT6.3 U2 BLK75 ORG78 BLK40 RUSE RECTIFIER BLK60 GRY96 WHT61 T'FORMER GRY96 WHT58 WHT59 BLK43 BRN76 HEAT OPTION OUTPUT USB AND RJ45 COMMUNICATIONS CONNECTION C2-2 U6 U4 U3 U2 USB AND RJ45 COMMUNICATIONS BOARD BLK77 AMB. ENCLOSURE DOOR SWITCH RED WHT UPPER THERMISTOR T1 RED WHT LOWER THERMISTOR T2 BLK25 OR HPC HPC (OPTIONAL) BLK35 L3 14(NO) BLK14 BRN34 L2 11(C) ORG78 RED33 L1 12(NC) TIME DELAY / PHASE MONITOR BRN20 L2 BLK21 L3 RED19 L1 BRN40 BRN82 BLK81 VARISTORS L1 L2 L3 CIRCUIT BREAKER L1 R (S) T1 POWER BLOCK POWER BLOCK BLK15 BLK14 COMPRESSOR 89081496 BLK42 CON 230 460 TRANSFORMER WRHT WHTL WHT COMP HTR OR O/E (OPTIONAL) BRN V RED U AMB. AMBIENT IMPELLER #2 BRN/EXI

DIMENSIONAL DRAWINGS

4000 BTU 115V WITH REMOTE ACCESS CONTROL

15.05 [382.2] 98 [25] 45 (2) [16.6] 11.18 [284.1] 17.01 [432.1] WARM AIR OUT ENCLOSURE AIR IN 11.38 [288.9] (2) 91 [23.2] 1.26 (2) [32.1] 15.87 (4) [403.1] 14.20 [360.6] 7.55 [191.8] 4.75 [20.7] ELECTRONIC CONTROLLER 28.59 [726.2] AMBIENT AIR IN REMOVABLE HANGING TABS COOL AIR OUT 89083017 CLEANABLE, REUSABLE ALUMINUM INLET FILTER 5.13 [130.2] 10.83 [275] POWER INLET 19.28 [489.8] 6.30 [160] 6.50 (2) [165.1] 6.50 (2) [165.1] 6.13 [155.7] 6.87 (2) [174.5] 5.55 [141] 2.34 [59.5] 11.83 [300.5] 15.26 [387.6] 1/4-20 UNC (11) MOUNTING HOLES NOTE: 1. APPROVE TO TYPE 12. 2. MOUNTING GASKET SUPPLIED (NOT SHOWN). ACCESS HOLE TO .375 [9.5] C.D. DRAIN STUB

4000 AND 6000 BTU 230V WITH REMOTE ACCESS CONTROL

15.05 [382.2] 98 [25] 65 (2) [16.6] 10.18 [258.7] 17.01 [432.1] WARM AIR OUT 28.59 [726.2] AMBIENT AIR IN ECNLOSURE AIR IN 11.38 [288.9] (2) REMOVABLE HANGING TABS COOL AIR OUT ELECTRONIC CONTROLLER 89083018 CLEANABLE, REUSABLE ALUMINUM INLET FILTER 57 (5) [14.5] 15.87 (4) [403.1] 14.20 [360.6] 1.26 (2) [32.1] 7.55 [191.8] 4.64 [117.7] 6.50 (2) [165.1] 6.50 (2) [165.1] 6.13 [155.7] 6.30 [140] POWER INLET 5.13 [130.2] 10.83 [275] 5.52 [140.2] 1/4-20 UNC (11) MOUNTING HOLES 1.26 [31.9] 14.00 [355.6] 15.26 [387.6] NOTE: 1. APPROVE TO TYPE 12. 2. MOUNTING GASKET SUPPLIED (NOT SHOWN). ACCESS HOLE TO .375 [9.5] O.D. DRAIN STUB

INSTALLATION INSTRUCTIONS WITH REMOTE ACCESS CONTROL

1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See HANDLING AND TESTING THE AIR CONDITIONER on page 3.
2. Using the mounting gasket kit provided with the unit, install gaskets to the air conditioner, see Figure 2.
3. Mount air conditioner on enclosure taking care not to damage the mounting gasket. The mounting gasket is the seal between the air conditioner and the enclosure. Avoid dragging the air conditioner on the enclosure with the mounting gasket attached as this could cause rips or tears in the gasket and risk losing the water tight seal.
4. Allow unit to remain upright for a minimum of five (5) minutes before starting. CAUTION! Air conditioner must be in upright position during operation.
5. Refer to the nameplate for electrical requirements. Wire the unit to a properly grounded power supply. For 3 phase units, once power is applied, verify that phase monitor light is illuminated which indicates correct electrical phasing. Electrical circuit should be fused with slow blow or HACR circuit breaker.
6. Set controller setpoints for required cabinet temperature. Refer to DISPLAYING AND CHANGING PROGRAM VARIABLES on page 14 for setpoint adjustment and operation.

16.97 [431] Ø 312 (11) [7,92] 7.55 [191,8] .55 [14](5) .28 [7,1](2) 1.27 (2) [32,3] 10.75 [273,1] 10.11 [256,8] 15.31 [388,9] 91 [23,2] 6.50 [165,1] (2) 6.50 [165,1] (2) 28.50 [723,9] 13.47 [342,1] 10.50 [266,7] 5.38 [136,7] 15.00 [381] 6.13 [155,7] 6.30 [160] 6.87 [174,5] (2) 28100013 14.50 [368,3] 15.26 [387,6] 15.87 [403,1](4)

Figure 2 Cut-out Drawing

MAINTENANCE

COMPRESSOR

The compressor requires no maintenance. It is hermetically sealed, properly lubricated at the factory and should provide years of satisfactory operating service.

Under no circumstances should the access fitting covers be loosened, removed or tampered with.

Breaking of seals on compressor access fittings during warranty period will void warranty on hermetic system.

Recharging ports are provided for the ease and convenience of reputable refrigeration repair service personnel for recharging the air conditioner.

INLET AIR FILTER

This air conditioner was designed with a dust resistant condenser coil. This allows it to be run filterless in most applications. The air conditioner is shipped with a filter in place for your convenience. For filterless operation, simply remove the filter. Should you decide the filter is necessary in your application, regular maintenance to clean this filter will assure normal operation of the air conditioner. The easily removable inlet air filter is located behind the front cover. If necessary filter maintenance is delayed or ignored, the maximum ambient temperatures under which the unit is designed to operate will be decreased.

If the compressor's operating temperature increases above designed conditions due to a dirty or clogged filter (or plugged condenser coil), the air conditioner's compressor will stop operating due to actuation of the thermal overload cut-out switch located on the compressor housing. As soon as the compressor temperature has dropped to within the switch's cut-in setting, the compressor will restart automatically. However the above condition will continue to take place until the filter or coil has been cleaned. It is recommended that power to the air conditioner be interrupted intentionally when abnormally high compressor operating temperature causes automatic shutdown of the unit. The above described shut-down is symptomatic of a clogged or dirty filter, thus causing a reduction in cooling air flow across the surface of the compressor and condenser coil.

HOW TO REMOVE, CLEAN OR INSTALL A NEW INLET AIR FILTER

RP aluminum washable air filters are designed to provide excellent filtering efficiency with a high dust holding capacity and a minimum amount of resistance to air flow. Because they are constructed entirely of aluminum they are lightweight and easy to service. To achieve maximum performance from your air handling equipment, air filters should be cleaned on a regular basis.

The inlet air filter is located behind the front access cover. To remove filter, push or pull to slide filter out from either side of the unit. The filter may now be cleaned or a new filter installed.

Cleaning Instructions:

1. Flush the filter with warm water from the exhaust side to the intake side. DO NOT USE CAUSTICS.
2. After flushing, allow filter to drain. Placing it with a corner down will assure complete drainage.

CONDENSER AND EVAPORATOR AIR MOVERS

Impeller motors require no maintenance. All bearings, shafts, etc. are lubricated during manufacturing for the life of the motor.

If one of the condenser impeller motors (ambient impellers) should fail, it is not necessary to remove the air conditioner from the cabinet or enclosure to replace the blower. The condenser blower is mounted on its own bulkhead and is easily accessible by removing the front cover.

CAUTION

Operation of the air conditioner in areas containing airborne caustics or chemicals can rapidly deteriorate filters, condenser coils, blowers and motors, etc. Contact Pentair Equipment Protection for special recommendations.

REFRIGERANT LOSS

Each air conditioner is thoroughly tested prior to leaving the factory to insure against refrigeration leaks. Shipping damage or microscopic leaks not found with sensitive electronic refrigerant leak detection equipment during manufacture may require repair or recharging of the system. This work should only be performed by qualified professionals, generally available through a local, reputable air conditioning repair or service company.

Should the refrigerant charge be lost, access ports on the suction and discharge sides of the compressor are provided for recharging and/or checking suction and discharge pressures.

Refer to the data on the nameplate which specifies the type of refrigerant and the charge size in ounces.

Before recharging, make sure there are no leaks and that the system has been properly evacuated into a deep vacuum.

REFRIGERANT PROPERTIES CHART (R 407C)

°F °C		Bubble Point (PSIG)	Dew Point (PSIG)		°F °C		Bubble Point (PSIG)	Dew Point (PSIG)
-40 -40 2	9 4.5 60 15.6 1	7.7 96.8
-35 -37.2	5.2 .7 65 18.3 1	28.7 106.7
-30 -34.4	7.9 1.7 70 21.1	140.2 117.2
-25 -31.7	10.7 4 75 23.9	52.5 128.4
-20 -28.9	13.9 6.5 80 26.7	165.5 140.4
-15 -26.1	17.3 9.3 85 29.4	179.2 153.1
-10 -23.3	21.1 12.4 90 32	2 193.6 166.5
-5	-20.6	25.2	15.8		95	35	208.8	180.8
0	-17.8	29.6	19.5		100	37.8	224.9	195.8
5	-15	34.4	23.6		105	40.6	241.8	211.8
10	-12.2	39.6	28		110	43.3	259.6	228.7
15 -9.4 45.2	32.7 115		46.1 278.2 246.5
20 -6.7 51.3	37.9 120		48.9 297.8 265.3
25 -3.9 57.8	43.6 125		51.7 318.3 285.2
30 -1.1 64.7	49.6 130		54.4 339.9 306.1
35 1.7	72.2	56.2 135	57.2 362.4 328.2
40	4.4	80.2	63.2		140	60	386	351.4
45 7.2	88.7	70.7 145	62.8 410.7 375.9
50 10 97.8	78.8 150		65.6 436.5 401.7
55	12.8	107.5	87.5

REFRIGERANT PROPERTIES CHART (R 134A)

°F °C		Pressure (PSIG)		°F °C		Pressure (PSIG)
-40 -40 -14.7		60 15.6 58
-35 -37.2	-12.3	65	18.3 64
-30 -34.4	-9.7	70	21.1 71.5
-25 -31.7	-6.8	75	23.9 78
-20 -28.9	-1	80 26.7 86.7
-15 -26.1	0 85 29.4 95
-10 -23.3	2 90 32.2	105
-5 -20.6	4 95	35	113.3
0 -17.8	7.5 100	37.8		125
5	-15	9		105	40.6	135
10	-12.2	12		110	43.3	146.7
15 -9.4	15	115	46.1	157.5
20 -6.7	18.5 120	48.9		170
25 -3.9	22	125	51.7	185
30 -1.1	26
35 1.7	30
40 4.4	35
45 7.2	40
50 10 45.5
55	12.8	51.5

FUNCTIONAL DATA

Unit	Evaporator. Air In(°F)	Amps(A)	Condenser Delta(°F)	Evaporator Delta(°F)
G280416GXXX	65-80 6.1-8.9 16-24 11-23
	80-100 6.4-9.4 18-31 11-29
G280426GXXX	65-80 2.5-3.9 25-33 19-29
	80-100 2.9-4.6 27-38 23-33
G280616GXXX	65-80 5.6-7.4 24-33 24-33
	80-100 6.4-9.1 27-38 27-37
G280626GXXX	65-80 2.5-3.9 25-33 19-29
	80-100 2.9-4.6 27-38 23-33

Unit	Evaporator. Air In(°F)	Amps(A)	Evap Pressure (PSIG)	Cond Pressure (PSIG)	Condenser Delta(°F)	Evaporator Delta(°F)
G280(4/6)46GXXX	65-80 0.8 - 1	.5 23 - 43 91 -	161 19 - 29 17 -	27
	80-100 1.1 - 1	.7 33 - 60 131	- 227 23 - 33 21	- 31

4000/6000 BTU UNIT CHARACTERISTICS

	Part Number
	G280416GXXX G280426GXXX G280616GXXX G280626GXXX				G280446GXXX G280646GXXX
Dimensional Data
Height 28.55/725.2mm	28.55/725.1 mm 28.55/725.2mm
Width 16.97/431.1mm	16.97/431.1mm 16.97/431.1mm
Depth 11.10/281.9mm	10.10/256.6mm 10.10/256.6mm 10.10/256.6mm
Unit Weight 82 lbs/37 kg	84 lbs/38 kg 84 lbs/38 kg 84 lbs/38 kg
Unit Protection Rating	Type 12/4/4X/3R Type 12/4/4X/3R Type 12/4/4X/3R
Cooling Data
Refrigerant R134a	R407C	R407C		R134A
Refrigerant Charge	12 oz.	20 oz.	20 oz.		16 oz.
Cooling Capacity at 95 F Enclosure 95 F Ambient (BTU/Hr./W)	3300/3410	4300/4600	5600/6000		4324/4655	5054/5685
Cooling Capacity at Max Conditions (BTU/ Hr./W)	3700	4600/4900	6000/6400		4600/4900	5400/6000
Maximum Ambient Temp	131 F / 55 C		131 F/55 C		131 F/55 C
Minimum Ambient Temp	-40 F / -40 C		-40 F/-40 C		-40 F/-40 C
Enclosure Airflow	151/183 CFM	189/221 CFM	189/221 CFM		189/221 CFM	189/221 cfm
External Airflow	284/290 CFM	291/300 CFM	291/300 CFM		291/300 CFM	291/300 cfm
Condensate Management
Heating Data
Capacity	2000 W	2000 W	2000W		N/A
Electrical Data
Rated Voltage (50/60 Hz)	115V	230V	115V	230V	400/460V 3 phase
Rated Frequency	50 / 60 Hz		50/60 Hz		50/60 Hz
Voltage Range	+/- 10% of rated		+/- 10% of rated		+/- 10% of rated
Cooling Amps at Max Conditions	10.4/10.1	4.6/5.8	9.9/11.4	4.6/5.8	1.7/1.9	1.7/1.9
Heating Amps	16.3	9.2	18.2	9.2	N/A
Compressor RLA / LRA	7.75 / 42	2.6/17.7	5.4/36.2	2.6/17.7	1.7/7.7
Evaporator Fan RLA*	.31	.48	.82	.48	.48
Condenser Fan RLA*	.93	.53	.93	.53	.53

SERVICE DATA

COMPONENTS LIST

Part Description	Part Number
	G280446GXXX	G280646GXXX G2	30416GXXX G280	426GXXX G2806	6GXXX G280626	6XXX
315 mA Fuse 89085115
Bridge Rectifier 89087424
Capacitor, Compressor, Run N/A	N/A N/A S-6173	52-6032-06 S-61	73
Capacitor, Compressor, Start N/A	N/A 89112001	10-1032-08 10-10	32-08 10-1032-08
Capacitor, Condenser Impeller	52-6032-14 52	-6032-14 52-6032	-13 52-6032-14 52	-6032-13 52-6032-14
Capacitor, Evaporator Impeller	52-6032-14 52	-6032-14 N/A 52	-6032-14 52-6032	-15 52-6032-14
Coil, Condenser	89051206	89051206	89075089	89051206	89051206	89051206
Coil, Evaporator	28-6010-00	28-6010-00	89075090	28-6010-00	28-6010-00	28-6010-00
Communication Board	89082033
Communication Cable	89080313
Compressor	10-1026-95	10-1026-95	89111751	10-1026-123	10-1016-91	10-1026-123
Contactor Compressor	89098321	89098321	N/A	N/A	N/A	N/A
Controller Wires with pins (24)	89083091
Controller, Basic	89075653
Filter Air, Reusable	89096883	89096883	89096883	89096883	89096883	89096883
Filter/Dryer	52-6028-00 52	-6028-00 52-6028	-00 52-6028-00 52	-6028-00 52-6028-00
Head Pressure Control Switch	89083016	89083016	89083016	89083015	89083015	89083015
Heater, 2000 Watt	N/A	N/A	10-1038-55	10-1038-54	10-1038-55	10-1038-54
Impeller Condenser	10-1091-124	10-1091-124	10-1091-123	10-1091-124	10-1091-123	10-1091-124
Impeller Evaporator	10-1091-122	10-1091-122	12-1012-01	10-1091-122	10-1091-121	10-1091-122
Limit Switch (automatic)	N/A	N/A	10-1033-01	10-1033-01	10-1033-01	10-1033-01
Limit Switch (manual)	N/A	N/A	10-1033-07	10-1033-07	10-1033-07	10-1033-07
Overload, Compressor	89098323	89098323	N/A	N/A	N/A	N/A
Relay Phase Monitor	89097986	89097986	N/A	N/A	N/A	N/A
Relay, Compressor Start N/A N/A	89115078 10-1042-13	10-1042-13	10-1042-13
Thermal Expansion Valve	10-1040-42	10-1040-42	N/A	89057143	89057143	89057143
Thermal Overload, Compressor	10-1007-77	10-1007-77	89114723	MRA5742-114	10-1007-18	MRA5742-114
Thermostat SPDT, 55-100F	10-1061-16	10-1061-16	10-1061-16	10-1061-16	10-1061-16	10-1061-16
Transformer 460/230V 800VA	10-1006-128	10-1006-128	N/A	N/A	N/A	N/A

TROUBLE SHOOTING

BASIC AIR CONDITIONING TROUBLE SHOOTING CHECK LIST - THERMOSTAT VERSION

1. Check manufacturer's nameplate located on the unit for correct power supply.
2. Turn on power to the unit. The evaporator (Enclosure or "COLD" air) impeller should come on. Is there airflow?

YES, proceed to step 3.

NO, possible problem:

» Open motor winding
» Stuck impeller motor
» Obstructed wheel

Repair or Replace defective part

1. Check phase monitor indicator light, is it Illuminated?

YES, proceed to step 4.

NO, possible problem:

» Incorrect electrical phasing

De-energize unit and swap any two power leads to unit. If problem still persists, replace phase monitor. Refer to phase monitor section of this manual for additional information.

1. Check thermostat setting and adjust thermostat to the lowest setting. This should turn the condenser impellers and the compressor on. Did condenser impellers and compressor come on when the thermostat was turned on?

YES, proceed to step 5.

NO, possible problem:

» Tripped customer door switch
» Defective thermostat

Replace part

1. Are all impellers and the compressor running? If not the unit will not cool properly.
2. Check condenser (Ambient or "HOT" air) impellers for airflow. Is there airflow?

YES, proceed to step 7.

NO, possible problem:

» Defective thermostat
» Open motor winding
» Stuck impeller motor
» Obstructed wheel

Repair or Replace defective part

1. Carefully check the compressor for operation - motor should cause slight vibration, and the outer case of the compressor should be warm. Is the compressor showing signs of this?

YES, wait 5 minutes, then proceed to step 8.

NO, possible problem:

» Defective thermostat
» Defective overload
» Defective relay

Repair or Replace defective part

1. Make sure the coils are clean. Then check evaporator "air in" and "air out" temperatures. If the temperatures are the same:

» Possible loss of refrigerant
» Possible bad valves in the compressor

Repair or Replace defective part

1. To check for a bad thermostat, turn power to the unit off. Remove the upper access panel and place both thermostat wires onto one terminal (replace upper access panel for safety). This will activate the switch in the thermostat. Turn the power on and if all impellers and the compressor come on, the thermostat needs to be replaced.

SYMPTOMS AND POSSIBLE CAUSES - THERMOSTAT VERSION

SYMPTOM POSSIBLE CAUSE
Unit won't cool	Clogged fins on coil(s)
	Dirty filter
	Impellers not running
	Compressor not running
	Compressor runs, but has bad valves
	Loss of refrigerant
Compressor tries to start but won't run	Low line voltage at start. Should be +/-10% rated voltage.
	Compressor motor stuck
	Bad contactor
	Bad overload switch
	Bad run/start capacitor
Unit blows breakers	Undersized breaker/fuse or not time delayed
	Short in system
Getting water in enclosure	Drain plugged
	Drain tube kinked
	Enclosure not sealed (allowing humidity in)
	Mounting gasket damaged

For additional technical support, contact Pentair Equipment Protection at 800-896-2665.

BASIC AIR CONDITIONING TROUBLE SHOOTING CHECK LIST - REMOTE ACCESS CONTROL VERSION

1. Check manufacturer's nameplate located on the unit for correct power supply.
2. Turn on power to the unit. The controller will display a start up sequence then revert to the normal temperature display mode. Is the correct enclosure temperature displayed?

Note: The temperature may be alternating with an alarm code.

YES, proceed to step 3.

NO, possible problem:

» Open controller fuse
» Controller in alarm condition. See ALARM CONDITION DISPLAY on page 15.
» Defective controller
» Defective thermistor - check by blowing warm air across the thermistor. If display temperature rises, thermistor is operable.

Replace part

1. The cooling status indication (symbol G) should be on. Is the symbol on? If not, press and hold the lower right "snowflake" button for greater than five seconds. Is the cooling mode symbol now on?

YES, proceed to step 4.

NO, possible problem:

» Defective controller

Replace part

1. The evaporator (Enclosure or "COLD" air) fan/impeller should turn on. Is there airflow?

YES, proceed to step 5.

NO, possible problem:

» Controller in alarm condition. See ALARM CONDITION DISPLAY on page 15.
» Open motor winding
» Stuck fan/impeller
» Obstructed blades/wheel
» Defective motor capacitor

Repair or Replace defective part

1. Check phase monitor indicator light, is it Illuminated?

YES, proceed to step 6.

NO, possible problem:

» Incorrect electrical phasing

De-energize unit and swap any two power leads to unit. If problem still persists, replace phase monitor. Refer to phase monitor section of this manual for additional information.

1. Start the cooling cycle by changing the cooling setpoint parameter (r01) to the low limit of 72 F (22 C). Symbol 1 should be displayed indicating a call for cooling. If symbol 1 is flashing, the unit is in Restart Time Delay mode. Within 6 minutes, symbol 1 should display without flashing. Is symbol 1 displayed without flashing?

YES, proceed to step 7.

NO, possible problem:

» Unit still in Recycle Time Delay mode
» Enclosure temperature below cooling setpoint temperature

Wait and/or heat enclosure thermistor T1

1. The compressor and the condenser (Ambient or "HOT" air) impeller(s) should turn on. Is there adequate airflow?

YES, proceed to step 8.

NO, possible problem:

» Open motor winding(s)
» Stuck impeller(s)
» Obstructed wheel(s)
» Defective motor capacitor(s)

Repair or Replace defective part

1. Carefully check the compressor for proper operation - motor should cause slight vibration and the outer case of the compressor should be warm. Is the compressor showing signs of this?

YES, wait 5 minutes, proceed to step 9.

NO, possible problem:

» Defective start or run capacitor
» Defective overload
» Defective start relay
» Defective contactor
» Defective compressor

Repair or Replace defective part

1. Make sure the coils are clean then check the evaporator "air in" and "air out" temperatures. If the temperatures are the same:

» Possible loss of refrigerant
» Possible bad valves in compressor

Repair or Replace defective part

SYMPTOMS AND POSSIBLE CAUSES - REMOTE ACCESS CONTROL VERSION

SYMPTOM POSSIBLE CAUSE
Unit won't cool	Clogged fins on coil(s)
	Dirty filter
	Impellers not running
	Compressor not running
	Compressor runs, but has bad valves
	Loss of refrigerant
Compressor tries to start but won't run	Low line voltage at start. Should be +/-10% rated voltage.
	Compressor motor stuck
	Bad contactor
	Bad overload switch
	Bad run/start capacitor
Unit blows breakers	Undersized breaker/fuse or not time delayed
	Short in system
Getting water in enclosure	Drain plugged
	Drain tube kinked
	Enclosure not sealed (allowing humidity in)
	Mounting gasket damaged

For additional technical support, contact Pentair Equipment Protection at 800-896-2665.

NOTES

WARRANTY

Pentair Equipment Protection warrants that the Goods manufactured by Pentair Equipment Protection will be free from defects in material and workmanship for a period of one (1) year from the date of shipment by Pentair Equipment Protection, subject to the following conditions and exclusions:

A. Conditions. All Goods must be installed and operated according to the following specifications:

1. Maximum voltage variation no greater than plus or minus 10% of nameplate nominal rating;
2. Maximum frequency variation no greater than plus or minus 3 Hz of nameplate nominal rating;
3. Must not exceed minimum and maximum stated temperatures on the nameplate;

4. Must not exceed (BTU/Hr) rating, including any heat sink as indicated on the nameplate;

5. Refrigerant bearing Goods must not be restarted for a period of one (1) minute after intentional or accidental shut-off;

6. The filters (if applicable) must be cleaned regularly;

7. The Goods and any parts thereof must not be modified, unless prior written authorization is received from Pentair Equipment Protection; and

8. All Goods must be installed and grounded in accordance with all relevant electrical and safety codes, as well as the National Electric Code and OSHA rules and regulations.

9. All Goods must be installed in a stationery application, free of vibration.

A violation of any one of these conditions shall render the warranty hereunder void and of no effect.

B. Exclusions. This warranty shall be void if product is misapplied in any way or:

1. Buyer specified product is inappropriate for system or environment in which it is operating.
2. Goods are not installed in accordance with Pentair Equipment Protection specifications.
3. Removal or modification of Pentair Equipment Protection label affixed to product without written Pentair Equipment Protection approval.

Pentair Equipment Protection must be notified of a claim in writing not later than fourteen (14) days from the date when Buyer has become aware of such occurrence, or where the defect is such that it may cause damage, immediately, such notice containing a description of how the defect manifests itself. Failure to provide such prompt notice to Pentair Equipment Protection shall result in forfeiture of Buyer's rights under this warranty.

In the event of a warranty claim, Buyer is to return defective goods to Pentair Equipment Protection in accordance with Pentair Equipment Protection Return Policy. Warranty period for repaired goods remains at 1 year from shipment of original goods. Pentair Equipment Protection sole obligation to Buyer under this warranty will be, at Pentair Equipment Protection option:

A. Repair or replace Pentair Equipment Protection products or parts found to be defective in material or workmanship.
B. Issue credit for the purchase price paid by Buyer relating to such defective Goods or part.

THIS WARRANTY CONSTITUTES THE ENTIRE WARRANTY WITH RESPECT TO THE GOODS AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY AND IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

RETURN AND REPAIR POLICY

Pentair Equipment Protection products that: (i) are made to order, (ii) have been modified by Buyer, (iii) have special finishes, or (iv) are determined by Pentair Equipment Protection to constitute “custom” products that cannot be returned to stock or resold to other Buyers, will not be accepted for return by Pentair Equipment Protection.

All returns require a Return Material Authorization number (RMA #), regardless of reason for return, whether it be for warranty or out of warranty repair. Returns without an RMA # will be refused by our Receiving Department. An RMA # is valid for 30 days.

A. An RMA # will be issued by our Product Return Department in Anoka, MN at 763-422-2211. Buyer should have following information available at time of RMA request:

1. Complete Model Number, Serial Number and description of damaged unit being returned.
2. Original Buyer Purchase Order number and date product was received by Buyer.
3. Quantity to be returned and a brief description of failure for each unit, if different.
4. Contact information of Buyer that must include: name of company, billing and shipping address, phone, number, fax number, freight carrier and the name and phone number of a Buyer contact who can elaborate on the claimed defect in detail.
5. Buyer must provide a Repair Purchase Order number for both warranty and out of warranty repairs. The PO will not exceed 50% of a new unit. Buyer will be notified of repair charges that exceed approved PO amount.

B. All returns to Pentair Equipment Protection must be securely packed, using original cartons if possible. All returns must have the RMA number visible on the outside of the carton. Pentair Equipment Protection is not responsible for material damaged in transit. Any refrigerant-bearing Goods must be shipped upright for return.

C. Shipping cost for all non-warranty repairs is the responsibility of the sender and must be shipped prepaid. Shipping costs for all warranty related repairs will be covered by Pentair Equipment Protection provided the goods are returned using a Pentair Equipment Protection approved carrier. If after diagnoses the product is determined by Pentair Equipment Protection not be covered under warranty, Buyer will be responsible for all shipping charges and will be billed accordingly.

D. Non-warranty repairs are subject to a \$105 minimum analysis fee. If approval is not received within 30 days, material will be scrapped and all shipping expenses and corresponding analysis fees will be billed to Buyer.

E. At Buyer's request, Failure Analysis can be provided by Pentair Equipment Protection for warrantable goods at no charge. Failure analysis for non-warranty repairs are subject to a \$150 per hour Engineering charge plus any other incurred testing costs.

F. All returned merchandise must be sent to the following address: Pentair Equipment Protection, 2100 Hoffman Way, Anoka, MN 55303-1745.

G. Credit for accepted returns shall be at the original selling price or the current selling price, whichever is lower, less the restocking charge indicated as follows:

1. Within 60 days of invoice date - 20% of applicable selling price.
2. Within 61-120 days of invoice date - 30% of applicable selling price.
3. Within 121-180 days of invoice date - 40% of applicable selling price.
4. Beyond 180 days - subject to individual review by Pentair Equipment Protection.

If product being returned for credit requires repair or modification, the cost of any labor or material necessary to bring product into saleable condition will be deducted from credit. Buyer may not take credit against returns without prior written Pentair Equipment Protection approval.

LIMITATION OF LIABILITY

PENTAIR EQUIPMENT PROTECTION WILL NOT BE LIABLE UNDER ANY CIRCUMSTANCES FOR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES, INCLUDING WITHOUT LIMITATION ANY LOST PROFITS OR LABOR COSTS, ARISING FROM THE SALE, USE OR INSTALLATION OF THE GOODS, FROM THE GOODS BEING INCORPORATED INTO OR BECOMING A COMPONENT OF ANOTHER PRODUCT, FROM ANY BREACH OF THIS AGREEMENT OR FROM ANY OTHER CAUSE WHATSOEVER, WHETHER BASED ON WARRANTY (EXPRESSED OR IMPLIED) OR OTHERWISE BASED ON CONTRACT, OR ON TORT OR OTHER THEORY OF LIABILITY, AND REGARDLESS OF ANY ADVICE OR REPRESENTATIONS THAT MAY HAVE BEEN RENDERED BY PENTAIR EQUIPMENT PROTECTION CONCERNING THE SALE, USE OR INSTALLATION OF THE GOODS.

Pentair Equipment Protection

2100 Hoffman Way

Minneapolis, MN 55303 USA

+1.763.422.2211

+1.763.576.3200

PentairProtect.com