GR3 - Air Conditioning Aermec - Free user manual and instructions

USER MANUAL GR3 Aermec

Electronic regulation for chillers and air and water cooled heat pumps

MANUEL D'UTILISATION

1. Characteristics of the regulation 3
2. User interface.. 3
3. Control panel description 4
4. Reading menu.. 5
5. Turning on/off (local mode) 7
6. Season change
7. Working temperature ...setting..8
8. Setting menu 13
9. Control settings for remote panel 15
10. Alarms 16

CHARACTERISTICS OF THE REGULATION1.

The command panel of the unit allows the quick setting of the machine's operating parameters, their visualisation at any time, and the immediate summary of the machine's operating status. The display is made up of 3 figures and 4 LEDs to signal, the type of working, the visualisa

tion of the parameters set or measured, and any alarms that have been activated. The card memorises all the settings saved with each modification and used for re-ignition after a switch-off owing to lack of voltage. With the installation of the remote control panel PR3, it is

possible to control, from a distance, the turning on and off, the setting of working mode [cold-hot], and the visualisation of the alarms summary with a red indicator light [alarms].

USER INTERFACE2.

- PR3

Simplified remote panel, follows the base controls that can be operated remotely from up to 30m.

CONTROL PANEL DESCRIPTION3.

Key Meaning
1 Visualisation of machine probe readings
2	Visualisation of triggered alarm list
3 Visualisation of operational parameters menu
4 Key to change operational parameters
5 and 6 Navigation keys
7	Sets the unit control, which can be local [L], from the panel on board the machine, or remote (R), from remote panel or supervisor. The active setting is indicated by the switching on of the corresponding indicator light.
8 Sets heating * or cooling * mode;
9	Turns the machine on or off by setting it to STAND-BY, [only the electronic card and the electric heater are powered];
10 Cancels machine alarms and restarts it (for further information, see alarm table)
11 Led indicator of current alarms
12 Led indicator of current defrosting mode
13 Led indicator of operating compressor

FIRST TIME THE MACHINE IS SWITCHED ON

The first time the machine is switched on, it carries out a self-configuration operation and a series of checks through which operating parameters and electrical connections of the machine are checked. After the autotest, the company logo and

the machine type are displayed for some seconds. Then, the panel is prepared for displaying the machine probe readings (key activated).

Reading acronym Meaning NRA NRC NRL NBW NLW
TIA	Read temperature at the evaporator inlet	√√	√		√	√
TIAH	Temperature read at the condenser inlet
TAE	Outside air temperature	√	√	√
TUA C1	Temperature read at evaporator outlet for circuit 1 (or the single-evaporator model)	√√	√√
DELTA C1	Temperature between evaporator inlet and outlet for circuit 1 (or the single-evaporator model)	√√	√√
TUAH C1	Temperature read at the condensator outlet for circuit 1 or single-condenser.
DELTA C1	Temperature between condenser inlet and outlet for circuit 1 (or the single-evaporator model)
P.B.C1	Low-pressure reading in circuit 1	√√	√√
P.A.C1	High-pressure reading in circuit 1	√√	√√
TL C1	Liquid temperature in circuit 1
P.IN S1	Calculation of defrosting initial pressure for circuit 1
ATTESA C1	Minimum waiting time to restart compressor 1	√√	√√
ATTE.C1A	Minimum waiting time to restart compressor 1A	√√	√√
ATTE.C1B	Minimum waiting time to restart compressor 1B	CPx6	CPx6	CPx6
P.B.C2	Low pressure reading in circuit 2	√√	√√
TUAH C2	Temperature read at the condenser outlet for circuit 2				Cx2	Cx2
P.A.C2	High-pressure reading in circuit 2	√√	√√
TL C2	Liquid temperature in circuit 2

Reading acronym Meaning NRA NRC NRL NBW NLW
P.IN S2	Calculation of defrosting initial pressure for circuit 2
ATTESA C2	Minimum waiting time to restart compressor 2
ATTE. C2A	Minimum waiting time to restart compressor 2A
ATTE. C2B	Minimum waiting time to restart compressor 2B		CPx6	CPx6CPx6
SBRINA C1	Minimum waiting time before defrosting circuit 1
SBRINA C2	Minimum waiting time before defrosting circuit 2
TEV1	Gas temperature read at evaporator inlet of circuit 1
TEV2	Gas temperature read at evaporator inlet of circuit 2
TAC	Temperature read in storage
TIR	Reading of inlet temperature for heat recovery	ver T ver T		ver T	ver T ver T
TUR1	Temperature read at the outlet for heat recovery of circuit 1	ver T ver T		ver T	ver T ver T
TUR2	Temperature read at the outlet for heat recovery of circuit 2	ver T ver T		ver T	ver T ver T
TFC	Temperature read at the freecooling battery inlet	Free	Free	Free

KEY
√	Reading available both in cooling only and heat pump models
Coo	Reading available only in G-compressor models
	Reading present in all versions, but available only in heat pump models
Coo	Reading available only in bi-condenser models
	Reading available in models with Total Recovery
Free	Reading available only in FREE COOLING models

Image Procedure to be adopted

TURNING ON:

For unit commissioning, press only ON key. When the led is on, the unit is ready for operation.

TURNING OFF:

Turn it off immediately with the same button.

Only if the PR3 accessory is installed, the unit shall be completely off after seven seconds.

SEASON CHANGE6.

Image Procedure to be adopted

To activate the season change, just press the key indicated next. So that the operation is correctly finished, the machine shall be activated both in remote or in local.

Two symbols are present in the "season change" key:

• The symbol ※ identifies the heat pump operation;
• the symbol * identifies cooling operation.

DISPLAY OF THE FUNCTIONING PARAMETERS

For displaying operation parameters, the key SET is pressed; the indicator light key SET is on and the parameters indicated in chapter "SETTING MENU" are displayed. Parameters can be sequentially displayed by using the arrow keys e The writing "Set Setting" appears on the first line and the set value on the second line.

To change the set parameter, press the key and the key

led will also be on. The setting displayed can be modified by using the arrow keys.

The wording on the first line changes to "Modified Setting". By pressing the key again, the modification is saved and, by using the arrow keys, it is possible to scan set parameters again to find a new parameter to be changed.

COOLING SET POINT SETTING

Image Procedure to be adopted

To access the parameter menu, first press the SET key and browse through by means of the arrow keys up to "Cooling Set".

Then, to set the COOLING SET value, just press the screwdriver key and enter into the modification of the set involved.

At this stage, by increasing or decreasing its value, the parameter can be changed by means of the arrows [+ and -] . Once the desired temperature is decided, just confirm the operation by pressing again the screwdriver key.

HEATING SET POINT SETTING

Image Procedure to be adopted

To access the parameter menu, first press the SET key and browse through by means of the arrow keys up to "Heating Set".

Then, to set the COOLING SET value, just press the screwdriver key and enter into the modification of the set involved.

At this stage, by increasing or decreasing its value, the parameter can be changed by means of the arrows [+ and -] . Once the desired temperature is decided, just confirm the operation by pressing again the screwdriver key.

Cooling set point values

Minimum -10°C

Maximum 20^

Heating set point values

Minimum 30^

Maximum 50^ C

N.B.

There is a second cooling operation set point (parameter: 2nd C. set), and a second heating working set point (parameter: 2nd H. set). Both parameters [2nd C. set - 2nd H. set] can be operated when the digital input [M11 3-4] is closed. For further information, consult the installer or the Technical After Sales Service.

SETTING OF TIME AND DAY OF THE WEEK (available with PGS accessory only)
Image Procedure to be adopted
AERMEG SETTING 00:00 Monday	To access the parameter menu, first press the SET key and browse through by means of the arrow keys up to TIME and DAY visualisation.
AERMEG INSERT CODE 00 00 00	To set the TIME and DAY, just press the screwdriver key. At this stage the writing "ENTER CODE" will be displayed. The code is that by default [00 00 00].
AERMEG SETTING ADJUST 00:00 Monday	Just press the screwdriver key to confirm. Thus, the modification of the set involved is accessed.
AERMEG SETTING ADJUST 15:30 Monday	By means of the arrow keys, first the time is modified (first led on). Once the time is decided, press the key SET to confirm and the third led will be automatically on. Then, modify the day of the week with the arrow keys.
AERMEG SETTING ADJUST 10 00 008	Press the screwdriver key and the display visualisation will shift to DAY, MONTH and YEAR setting. With the arrow keys and the first led on, the day can be modified; with the second led on, the month is modified and with the third, the year.
AERMEG SETTING 15:30 Monday	Once time, day, month and year are set, just press the screwdriver key again to save the set values. The display will return to the initial screen.
TIMER OPERATION MODE (available with PGS accessory only)
Image Procedure to be adopted
AERMEC SETTING Timer NAME	To access the parameter menu, first press the SET key and browse through by means of the arrow keys up to the parameter "Timer".
AERMEC INSERT CODE 00 00 000	Press the screwdriver key. At this stage, the writing "ENTER CODE" will be displayed. The code is the one by default (OO 00 00). Just press the screwdriver key for a second time to confirm.
AERMEC SETTING Timer NONE	By acting on the arrows, move to the programming mode desired. There are three alternatives: (NONE - DAY -WEEK).

SET IMPOSTATO Timer NOHERE	NONE mode: The programming timer is disabled.
SET IMPOSTATO Timer DAY	DAY mode: It is possible to set, along the day, two operation time bands. - The Daily setting is visualised - Monday to Sunday settings are not visualised.
SET IMPOSTATO Timer WEEK	WEEK mode: It is possible, for each day of the week, two operation time bands. - Monday to Sunday settings are visualised. - The Daily setting is not visualised

Once the desired option is selected, confirm by pressing the screwdriver key.

N.B. ON/OFF TIMER: To program the timer, it is necessary to have access either to the remote or the local panel.

TIME BAND SETTING
Day mode
Image Procedure to be adopted
AHRMEC SETTING Day	Press the SET key, act on the arrow keys until the "Daily" setting is visualised.
AHRMEC INSERT CODE 00 00 0000	Press the screwdriver key. At this stage, the writing "ENTER CODE" will be displayed. The code is that by default (00 00 00).
AHRMEC START 1 00:00K STOP 1 00:00K	Just press the screwdriver key a second time to confirm. At this stage, the menu to modify time bands is entered.
AHRMEC START 1 00:20K STOP 1 00:50K	Then, act on arrow keys to change START 1 values [at the same time, STOP 1 values will be also in progress]. Confirm with the screwdriver key to modify only the STOP 1.
AHRMEC START 1 00:20 STOP 1 00:50K	With the arrow keys, modify STOP 1 values and provide final confirmation by pressing the screwdriver key.
AHRMEC START 2 06:00K STOP 2 06:00K	The second time band is now visualised. Act on arrow keys to change START 2 values (at the same time, STOP 2 values will be also in progress). Confirm with the screwdriver key to modify only the STOP 2.
AHRMEC START 2 06:00 STOP 2 06:30K	With the arrow keys, modify STOP 2 values and provide final confirmation by pressing the screwdriver key.
Week mode
Image Procedure to be adopted
AERMEC SETTING Monday	Press the SET key, act on the arrow keys until the "Monday" setting is visualised. With the arrow keys, the days from "Monday" to "Sunday" will sequentially appear.
AERMEC START 1 00:00< STOP 1 00:00>	Press the screwdriver key to select the day. Thus, the menu for that day is entered.
AERMEC START 1 00:28< STOP 1 00:28>	Then, act on arrow keys to change START 1 values (at the same time, STOP 1 values will be also in progress). Confirm with the screwdriver key to modify only the STOP 1.
AERMEC START 1 00:28< STOP 1 00:58>	With the arrow keys, modify STOP 1 values and provide final confirmation by pressing the screwdriver key.
AERMEC START 2 06:00< STOP 2 06:00>	The second time band is now visualised. Act on arrow keys to change START 2 values (at the same time, STOP 2 values will be also in progress). Confirm with the screwdriver key to modify only the STOP 2.
AERMEC START 2 06:00< STOP 2 06:38>	With the arrow keys, modify STOP 2 values and provide final confirmation by pressing the screwdriver key.
AERMEC SETTING Monday	The display visualisation will return to the initial "SET SETTING - Monday". At this stage, it is possible to move the rest of the days one by one and program the timer with the procedure previously shown.

Remember that the range within which these parameters are set is provided by the machine operating limits. The minimum and

maximum values to be set only represent one characteristic of regulation.

USER SETTING Description Min. Default Max. Water/Air					Water/Water
Cold Setting	Water inlet temperature in Cold mode operation.	-10°C 7.0°C 20°C
Heating Setting	Water inlet temperature in Cold mode operation.	30°C 50°C	50°C
2nd C. Set	Second Cooling set.	-10°C	11°C	20°C
2nd H. Set	SECOND HEATING SET.	30°C 45°C	50°C

WARNING

The settings listed in the following table can be visualised by the user, but they can be only modified by the technical After Sales Service. If these settings are modified by non-authorised personnel, the warranty shall be considered void.

INSTALLATOR SET	Description Default value
Tot. diff.	Proportional temperature band within which the compressors are activated and deactivated	5°C
Set AG	Antifreeze Alarm temperature, EV side [water outlet temperature].	3°C
Esc.B.P.	Low Pressure Alarm bypass time, after the compressor start-up.	3'
AG Evap	Antifreeze setting for evaporator input gas temperature. Can be overridden.	-8°C
B.AG Evap	Evaporator antifreeze alarm bypass from On CP, end defrosting.	20 sec.
CP1 Power	% power of compressor 1 compared with the machine 100% value.	25%
CP2 Power	% power of compressor 2 compared with the machine 100% value.	25%
CP1A Power	% power of compressor 1A compared with the machine 100% value.	25%
CP2A Power	% power of compressor 2A compared with the machine 100% value.	25%
CP1B Power	% power of compressor 1B compared with the machine 100% value.	0
CP2B Power	% power of compressor 2B compared with the machine 100% value.	0
CP 1 Time	Compressor 1 operating hours. This value can only be reset.	0
CP 2 Time	Compressor 2 operating hours. This value can only be reset.	0
OreCP1A	Number of worked hours for the 1A compressor. This value can only be reset.	0
OreCP2A	Number of worked hours for the 2A compressor. This value can only be reset.	0
OreCP1B	Compressor 1B operating hours. This value can only be reset.	0
OreCP2B	Compressor 2B operating hours. This value can only be reset.	0
Cond.low	Condensation regulation setting corresponding to the external temperature T.C.low	17 bar
Diff.low	Condensation regulation differential setting corresponding to the external temperature T.C.low	20 bar
Cond.hig	Condensation regulation setting corresponding to the external temperature T.C.high	17 bar
Diff.hig	Condensation regulation differential setting corresponding to the external temperature T.C.high	12 bar
Cond. PC	Corresponding condensation regulation setting in the heat pump	45 bar
Diff. PC	Condensation regulation differential corresponding to the heat pump	5 bar
T.C.low	Low outside temperature limit for the selection of the setting and selection differential	-5 °C
T.C.high	High outside temperature limit for the selection of the setting and selection differential	40°C
Volt Min	Minimum DCP output voltage when cold	1V
DcpR Off	High pressure value below which DCP output is 0 volts during low temperature pre-ventilation.	22 bar
DcpR On	High pressure value above which DCP output is 10 volts during low temperature pre-ventilation	23 bar
S. R Heating	Thermostat setting to manage the water inlet recovery.	50°C
D.Tot.R	Setting to determine the distance between one step and the following one, in the recovery operation setting.	5°C
T. OutS.	Temperature [read by the probe on the fluid] above which the DEFROSTING action can END	20°C
Number of resistors	Number of supplementary heaters [number of steps].	0
Set Res	External air setting under which electrical elements are enabled	5°C
Power Res	% power of each supplementary heater step compared with the machine 100 % value	0
Set Ta CP	Setting in comparison with the external air. Below this value, compressors will be disabled if P.C. supplementary heaters are present.	-5 °C
Numb. of pumps	Total number of evaporator pumps	0
Numb. of pumps ON	No. of pumps switched on at the same time.	0
In/Out H2O	Temperature regulation selection on the water inlet/outlet	IN
Time Int	Integration time (integral error calculation) for regulation in water outlet.	600
CP1-CP2B	Compressor override mask if the power limit control is active: CP1-CP2-CP1A-CP2A-CP1B-CP2B	111111
V.max FC	Maximum DCP voltage in freecooling	10V
AG pump	Enabling of the pump powering up as antifreeze protection together with the evaporator electrical elements.	OFF
MultiTRIO	Enabling at the multichiller control (network control of more than one chiller with master and slaves)	OFF
Language	Language selections used: Italian, English, German, and French	---
Code	New access code to modify protected Settings. Initially the code is 00-00-00.	000000
Time *	Time, day of the week, month, year	---
Timer Setting *	Timer operation mode: disabled, daily, weekly	none
Daily *	Timer setting: daily Visualised if Timer Setting = Day.	---
Monday *	Weekly timer setting Visualised if Timer Setting = Week.	---
Tuesday *	Weekly timer setting Visualised if Timer Setting = Week.	---
Wednesday *	Weekly timer setting Visualised if Timer Setting = Week.	---
Thursday *	Weekly timer setting Visualised if Timer Setting = Week.	---
Friday *	Weekly timer setting Displayed if Timer Setting = Week.	---
Saturday *	Weekly timer setting Visualised if Timer Setting = Week.	---
Sunday *	Weekly timer setting Visualised if Timer Setting = Week.	---

• Available with PGS accessory

CONTROL SETTINGS FOR REMOTE PANEL9.

CONTROL BOARD SETTING

The command "remote" must be set on the machine control board. The timer operates either in local or remote mode. In both cases, the timer is ignored if the machine is in OFF. Moreover, the remote panel must be set to "ON"; otherwise, the machine remains off (OFF) in spite of the timer approval. The remote panel is used to manage ON/OFF and Cooling/Heating commands from a distance.

Component Description

1 simplified remote control panel PR3
2 On/Off switch
3	Yellow ON/OFF indicator light when the yellow led is on = ON
4	Shift to COOLING/HEATING operation mode * = cooling operation * = heat pump operation
5	Operation mode [bicColour indicator light] Blue indicator light = it is operating in cold mode Red indicator light = it is operating in heat pump mode
6 Red indicator light: when on, it indicates alarm status

ALARMS10.

HISTORY OF SAFETIES

The safety management records the last Pre-alarms or Alarms occurred. This list is always active. Once the parameter is set, press the key to visualise the list and, for scrolling, press the arrow keys and . The following visualisations will appear on the display depending on whether the electronic card has or not the PGS accessory.

With PGS

In the first line, the first letter shows the intervention type (A for Alarm or W for Pre-alarm). Then, and only with PGS, the date [dd / mm / yy] and the time, on the right end, are indicated. If the PGS is not present, the compressor operation time shall be shown on the right end.

In the second line, the pair of figures shows the page number [from 01 to 999]

and occurred alarms and pre-alarms are listed at the centre of the line.

N.B. = although page enumeration is up to 999, all these pages cannot be saved. The number of saving operations [minimum 25] may change according to the type of memory with which the electronic card has been provided.

A10.1. larm history page format with PGS accessory

A10.2. larm history page format without PGS accessory

VISUALISATION OF OCCURRED ALARMS
Alarm Water/air Water/water Description
Flow switch	✓	✓	Intervention of water differential pressure switch and/or flow switch
Cond. Pump/FL		✓	Intervention of condenser pump thermal protection/flow switch
MT CP 1	✓	✓	Intervention of compressor magneto-thermal 1
MT CP 2	✓	✓	Intervention of compressor magneto-thermal 2
MT CP 1A	✓	✓	Intervention of compressor magneto-thermal 1A
MT CP 2A	✓	✓	Intervention of compressor magneto-thermal 2A
MT CP 1B	✓	✓	Intervention of compressor magneto-thermal 1B
MT CP 2B	✓	✓	Intervention of compressor magneto-thermal 2B
Low Pres. 1	✓	✓	Intervention of pressure switch/low-pres. transducer circuit 1
Low Pres. 2	✓	✓	Intervention of pressure switch/low-pres. transducer circuit 2
High Pres. 1	✓	✓	Intervention of pressure switch/high-pres. transducer circuit 1
High Pres. 2	✓	✓	Intervention of pressure switch/high-pres. transducer circuit 2
Antifreeze 1	✓	✓	Intervention of antifreeze circuit 1
Antifreeze 2	✓	✓	Intervention of antifreeze circuit 2
MT MV 1	✓		Intervention of fan magneto-thermal circuit 1
MT MV 2	✓		Intervention of fan magneto-thermal circuit 2
Probe 1	✓	✓	Probe alarm circuit 1
Probe 2	✓	✓	Probe alarm circuit 2
Monitor	✓	✓	Intervention of power supply control
Pumpdown 1	✓	✓	Failure when unloading compressor cylinders of circuit 1
Pumpdown 2	✓	✓	Failure when unloading compressor cylinders of circuit 2
Eprom	✓	✓	Abnormal operation of the electronic board
Ram	✓	✓	Abnormal operation of the electronic board
Flow Recovery	✓	✓	Flow switch of heat recovery circuit (only D and T versions)
MT MPOE 1	✓	✓	Intervention of the evaporator pump magneto-thermal 1
MT MPOE 2	✓		Intervention of the evaporator pump magneto-thermal 2
MP MPOE 3	✓		Intervention of the evaporator pump magneto-thermal 3
B.AG Evap1	✓	✓	Evaporator outlet gas anti-freeze alarm 1
B.AG Evap 2	✓	✓	Evaporator outlet gas anti-freeze alarm 2

WARNING

Repeated and consecutive manual resets may seriously damage the unit.

M10.3. anual reset on board the machine

M10.4. anual reset from remote panel

Sommaire

Image Procedure a adopter

ALLUMAGE :

Image Procedure a adopter

Composant Description