B6LCEPSN - Range hood BROAN - Free user manual and instructions

USER MANUAL B6LCEPSN BROAN

Light Commercial Heat Recovery Ventilators and Energy Recovery Ventilators

Installation, Operation and Service Instructions

INSTALLER: READ THESE INSTRUCTIONS AND LEAVE THIS MANUAL TO THE END USER.

Interior view of a mechanical device with visible components and wiring (no text or symbols)

B6LC

Interior view of an industrial machine enclosure with visible internal components and wiring (no text or symbols)

B12LC

Table of Contents

1. Safety Considerations....3

2. Installation 4-5

2.1 Inspection 4
2.2 Mounting Location Requirements 4
2.3 Mounting Options....4
2.4 Ductwork....4-5
2.5 Internal Grilles and diffusers....5
2.6 Exterior Hoods ....5
2.7 Drains ....5
2.8 Electrical connections....5

3. Controls ....6

3.1 General Information ....6
3.2 Sequence of Operation....6
3.3 Defrost 6
3.4 Remote Wall Control (Optional) 6

4. Airflow Measurements and Balancing....7

5. Maintenance 7-8

5.1 Bi-Monthly Maintenance....7
5.2 Annual Maintenance ....8

6. Service 8-9

6.1 Parts Replacement 8-9
6.2 Troubleshooting 9

7. Service Parts....10-11

7.1 B6LC-B12LC Exhaust Defrost....10
7.2 B6LC-B12LC Recirculation Defrost....11

Appendix A - Mounting Diagram .....12

Appendix B - Unit Dimensions 13-16

Appendix C - Balancing Dampers Position....17

Appendix D - Drain Connections .....17

Appendix E - Terminal Control Diagrams 18-19

Appendix F - Control Box Assembly B6LC and B12LC 19

Appendix G - Make-up Heat Requirements .....20

Appendix H - Wiring Diagrams. 21-24

Hazards may exist within this equipment because it contains electrical and powerful moving components.

Only qualified service personnel should install or service this equipment. Untrained personnel can perform basic maintenance such as maintaining fi Iters.

Observe precautions marked in literature and on labels attached to unit. Follow all safety codes.

Please take note that this manual uses the following symbols to emphasize particular information:

WARNING

Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.

CAUTION

Denotes an instruction which, if not followed, may severely damage the unit and/or its components.

NOTE: Indicates supplementary information needed to fully complete an instruction.

LIMITATION

NOT FOR OUTDOOR USE. Installation work and electrical wiring must be done by a qualified person in accordance with all applicable codes and standards, including fi re-rated construction codes and standards.

⚠ WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING:

1. Use this unit only in the manner intended by the manufacturer.
2. Before servicing or cleaning this unit, turn power off at service panel.
3. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.
4. When cutting or drilling into a wall or ceiling, do not damage electrical wiring and other hidden utilities.
5. Do not use this unit with any solid-state speed control device other than those specified in section 3.1.
6. This unit must be grounded.
7. Do not install in a cooking area or connect directly to any appliances.
8. Do not use to exhaust hazardous or explosive materials and vapors.
9. When performing installation, servicing or cleaning this unit, it is recommended to wear safety glasses and gloves.
10. When applicable local regulation comprises more restrictive installation and/or certification requirements, the aforementioned requirements prevail on those of this document and the installer agrees to conform to these at his own expenses.

CAUTION

1. To avoid prematurely clogged filters, turn the unit OFF during construction or renovation. Do not use the unit when sanding drywall. Certain types of dust and vapors may damage the system.
2. Please read specification label on product for further information and requirements.
3. Be sure to duct air outside – Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage. Do not attempt to recover the exhaust air from a dryer or a range hood.
4. Do not run any air ducts directly above or within 2 ft (0.61 m) of a furnace or its supply plenum, boiler, or other heat producing appliance. If a duct has to be connected to the furnace return plenum, it must be connected 10^ (3.1 m) away from plenum's connection to the furnace.
5. The ductwork is intended to be installed in compliance with all applicable local and national codes.
6. When leaving the building for a long period of time (more than two weeks), a responsible person should regularly check if the unit operates adequately.
7. If the ductwork passes through an unconditioned space (e.g.: attic), the unit must operate continuously except when performing maintenance and/or repair. Also, the ambient temperature of the building should never drop below 18^ (65^) .
8. At least once a year, the unit mechanical and electronic parts should be inspected by qualified service personnel.
9. Make sure at all times that the outside intake and exhaust hoods are free from any snow during the winter season. It is important to check the unit during a big snow storm, so it doesn't draw in any snow. If this is the case, please turn the unit OFF for a few hours.

2. Installation

2.1 Inspection

Inspect the exterior of the unit for shipping damage by ensuring that there is no damage to the door, door latches, door hinges, damper, duct collars, cabinet, etc. Inspect the interior of the unit for damage by ensuring that the fan motors and housings, heat or energy recovery cores, insulation, dampers, actuators and drain pans are all intact.

If transportation damage is found, file a claim immediately with the transportation agency. Remove all packaging, tape, etc. from the cabinet.

2.2 Mounting Location Requirements

When determining an installation location, the unit must be mounted in a heated area to prevent condensate drain lines from freezing. The mounting location should be away from occupied areas to provide quiet operation. The area should also be easily accessible for maintenance.

NOTE: These units have minimum clearance requirements when mounting. See Appendix B for specific clearance requirements.

Mounting options must allow 12" (305 mm) clearance in front of control cover for access.

A mounting location close to an exterior partition will minimize the length of insulated duct. The unit should be close to a drain and 120 volt, 60 Hz power supply. The unit should be mounted away from hot chimneys, electrical panels and other hazards.

WARNING

To reduce the risk of injury caused by sharp edges and/or moving parts, it is recommended to wear safety glasses and gloves while performing these instructions.

2.3 Mounting Options

NOTE: Remove and discard the metal plate screwed on the unit to prevent the door from opening during transport.

Left side, standard door Metal plate VD0523 Right side, reversed door Metal plate

There are several options for hanging or floor mounting the unit.

NOTE: In all cases, the unit must be level. Consult local building code for restrictions in your area regarding installation.

Hang the unit with the reinforced rubber straps provided as shown in Appendix A. Check with local building codes regarding the use of rubber straps in commercial buildings. Attach the straps to the unit with two no. 8 screws provided. Then attach the other end of the strap to the ceiling joists, trusses, custom frame, etc.

The unit can also be hung with 3/8" (10 mm) threaded rod and U channels or angles (not supplied) as shown in Appendix A.

When installing the unit, keep in mind that access to the control panel may be required. Supply and exhaust ducts to outdoors may have 1" to 2" (25 mm to 51 mm) of insulation on them. Rubber vibration isolation may be required and is recommended for quiet operation.

The unit can also be mounted on a metal or wooden curb (not supplied) bolted to the floor as shown in Appendix A. Space must be left under the unit to allow connection of drain lines. A gradual slope is required for the condensate water to drain by gravity (minimum 1/4"/foot) (6 mm/305 mm). If this is not possible, a pump should be used. If attachment of the unit to the curb is required, ensure that screws, bolts and mounting hardware do not interfere with moving parts or that the integrity of the cabinet insulation is not affected.

2.4 Ductwork

The supply and exhaust duct connections on the unit are as follows:

UNIT DUCT SIZE

B6LC 14" x 8" (356 mm x 203 mm)

B12LC 20" x 8" ($08 mm x 203 mm)

NOTE: Duct sizes are for connection purposes only. Ducts should be sized to keep noise and pressure drop to a minimum.

The supply and exhaust ducts connected to outdoors, as well as any ducts passing through an unconditioned space, must have a minimum insulation value of R5. In addition, a continuous integral vapor barrier over the duct insulation must be used.

2.4 Ductwork (cont'd)

Air balancing dampers are recommended for both supply and exhaust ducts to allow for adjustment of airflow. Also, flexible canvas connectors should be installed close to the unit in the supply duct to the building and the exhaust duct from the building to reduce noise transmission from the unit to the building, see Appendix C.

All ports on the B6LC and B12LC units have 1" (25 mm) flanges to facilitate the installation of the ductwork. Please note that the "Fresh Air from Outdoors" port has a defrost damper incorporated with it.

Ensure that any mechanical fasteners used to connect the duct do not interfere with the operation of the damper. Screws can be installed on the side of the cabinet rather than the flange for this port only. For port locations see Appendix B.

2.5 Internal Grilles and Diffusers

Locate exhaust grilles and supply diffusers to provide effective ventilation and avoid short circuiting of airflows. Adjustable dampers should be provided at every grille and diffuser location to make balancing of the system possible.

A proper selection of style and size of grilles and diffusers is required to minimize pressure drop. The velocity of the airflow should not exceed 400 ft./min. (2 m/sec.) for normal applications.

The duct system should be designed according to the high speed flow rate of the unit. In order to keep the noise and pressure drop to a minimum, a maximum air velocity of 1100 ft./min. (5.6 m/sec.) should be used in calculations in duct design. The duct runs should be kept as short as possible with the minimum amount of elbows and transitions.

The manufacturer recommends the use smooth radius elbows or square elbows with turning vanes to achieve maximum performance.

2.6 Exterior Hoods

It is important that the fresh air intake hood be positioned well away from any source of contamination. The exterior supply and exhaust hoods must be separated enough to prevent cross-contamination and at an elevation that will prevent blockage by snow, dirt and leaves.

NOTE: Consult local building code for restrictions in your area.

A rodent screen with 1/4'' (6 mm) mesh must be installed to prevent the intake of large debris and animals. A backdraft damper may need to be installed in the exhaust duct to prevent cold air entering the building if the unit is to be shut off for a long period of time.

To maintain optimum airflow performance, exterior hood selection must be such that the minimum free area of opening is as follows: 140 inches ^2 (0.09 m ^2 ).

2.7 Drains

The drain fittings provided with the unit will accept a 3/4" (19 mm) NPT coupler (supplied by others). The drain line for the unit must be fabricated on-site and connected to the building main. A loop in the hose or trap in the copper or plastic pipe must be provided to prevent sewer gases from entering the unit when connecting to a drain as illustrated in Appendix D.

NOTE: Consult local building code for plumbing requirements in your area. If copper pipe is to be used, ensure not to solder to the 3/4" (19 mm) coupler while it is attached to the plastic drain fitting as deformation may occur. Ensure adequate slope is present to allow good drainage (minimum 1/4" per foot or 6 mm per 305 mm).

2.8 Electrical Connections

Power

A terminal block and strain relief bushing or a junction box is provided for line voltage to make the necessary power connections.

The electrical requirements are as follows:

	B6LC B12LC
VOLTAGE 120	V 120 V
MCA 9.50 A 14	.30 A
MOP 15.00 A 20	0.00 A

3.1 General Information

FAN INTERLOCK RELAY OUTPUT (FF)

External fan control can be achieved by connecting an external 24 volts fan control through dry contacts (FF). These contacts are closed on a call for ventilation or defrost. See wiring diagram shown in Appendix E.

SPEED SELECTION

There are three speed settings available with the controls, only two of which can be functional at any one time. The units are factory set to use the low and high speed taps on the blower motors. If necessary, the medium speed tap can be used instead of the low speed tap. See wiring diagrams for instructions on how to make this change. Units without the remote wall control option can be shut off by opening the contact between LOW - COM or HIGH - COM as shown in Appendix E-2.

3.2 Sequence of Operation

Before start-up, check the unit for obstructive packaging, objects near or in blowers, dampers, heat exchangers, etc. Once installation is complete, check all modes of operation to ensure that the unit is working properly. Close the doors and check for operation on LOW, COM and HIGH. Use a wall control or the dry contact switching to run fan speeds as shown in Appendix E-2.

UNIT CHECK POINTS (ALL UNITS):

• Power connected, no ventilation call - Both fans are off, defrost damper (if equipped) closes off fresh air from outdoors.
- Power connected, low speed call - Both fans on low speed internal defrost damper (if equipped) opens fresh air from outdoors. If the unit is equipped with recirculation module, the internal defrost damper closes recirculation opening.
- Power connected, high speed call - Both fans on high speed, defrost damper opens fresh air from outside. If the unit is equipped with recirculation module, the internal defrost damper closes recirculation opening.
- Power connected, occupied timer/sensor connection open (unoccupied mode) - Both fans are off, defrost damper closes fresh air from outdoors. If the unit is equipped with recirculation module, the internal defrost damper opens recirculation opening.
- Power connected, FF control contacts close during unit ventilation or defrost cycle.

3.3 Defrost

The unit functions are controlled by integrated controls in the unit which may include Exhaust Only Defrost or Recirculation Defrost (via the recirculation module). In cold temperatures, defrost cycles will remove frost from the heat recovery core to maintain good operation.

EXHAUST ONLY DEFROST (OPTIONAL)

Frost removal occurs when the supply blower de-energizes, the supply air damper and the core damper close and the exhaust fan continues to circulate only warm inside air through the heat recovery core or energy recovery core to maintain ventilation. This process prevents the build up of ice in the core. Defrost is temperature initiated at 23^ F to -22^ F ( -5^ C to -30^ C) and time based.

WARNING

A negative building pressure may develop during the defrost cycle with possible back drafting fumes from combustion equipment, which may have severe health consequences.

RECIRCULATION DEFROST MODULE (OPTIONAL - FACTORY INSTALLED)

The defrost cycle is electronically controlled in response to the outdoors temperature 23^ F to -22^ F ( -5^ C to -30^ C). On a call for defrost, the supply air damper in the recirculation module closes, exhaust fan is de-energized and the supply fan continues to recirculate warm air through the heat recovery core or energy recovery core. It is possible to extend the defrost times during very cold weather by removing the jumper JU1-F on the circuit board as shown in Appendix F. For dimension and weight changes to the B6LC and B12LC models with recirculation defrost, see Appendix B-2 and B-4.

3.4 Remote Wall Control (Optional)

Remote mounted wall control options can be used to control the ventilators from a location remote to the installed unit location. The connection from the ventilator to the control is low voltage and requires a 4 conductor (24 ga. minimum) LVT cable. Models are available with a dehumidistat control. The following option is available.

SLIDE SWITCH TYPE

Dehumidistat to engage high speed exchange. Slide switch operation supporting continuous low exchange and continuous high exchange.

Once installation is complete, the supply and exhaust airflows should be balanced. This will ensure proper operation and a good quality installation.

A well designed duct system with properly sized duct runs and equal static pressure losses of both the supply and exhaust will aid in balancing the unit. However, it will be necessary to take flow measurements with the proper equipment to ensure a balanced system.

Before proceeding with balancing, all windows, overhead doors and walk-in doors should be closed and exhaust systems should be turned off.

5. Maintenance

5.1 Bi-Monthly Maintenance

WARNING

Risk of electric shocks. Before performing maintenance, always stop the unit, then turn power off at service panel. The wearing of safety glasses and gloves is recommended when handling unit components to prevent injuries caused by sharp edges.

Bi-monthly maintenance should include:

AIR FILTERS

The standard foam filters are washable. Under normal conditions it is recommended that they be cleaned every two months. More frequent cleaning may be required under extremely dirty operating conditions. Use a vacuum cleaner to remove the heaviest portion of accumulated dirt, then wash with warm water.

A medium efficiency filter for the supply air stream is available from your supplier. This filter is disposable and should be replaced when it becomes dirty.

① ① ② VL0001

B6LC and B12LC units
① Washable foam filters
② MEF filter - optional

DRAIN PANS AND INTERIOR OF UNIT

With the filters removed from the unit, the foil faced insulation surfaces and the drain pans should be wiped clean with a soft cloth and mild cleaning solution. Also ensure that the drain fittings are free from dirt and are draining freely.

5.2 Annual Maintenance

WARNING

Risk of electric shocks. Before performing maintenance or repairs, always stop the unit, then turn power off at service panel. The wearing of safety glasses and gloves is recommended when handling unit components to prevent injuries caused by sharp edges.

Annual maintenance should include:

AIR FILTERS

Vacuum and wash standard foam filters. Replace medium efficiency filter if present.

DRAIN PANS AND INTERIOR OF UNIT

Wash the foil faced insulation surfaces and wipe the drain pans with a soft cloth and mild cleaning solution. Check the drain fittings to ensure they are draining freely.

RECOVERY CORE

The recovery core must be handled with care. It is recommended that it be washed once a year following the season of most intense use, in order to ensure maximum efficiency of the partitions.

HEAT RECOVERY CORE	ERV HM CORE
CAUTION CAUTION
Hot water and a strong cleaning agent could damage the polypropylene core. Ensure the core is returned to the unit in the correct orientation. Use the sticker as a guide.	Do not soak the ERV HM core in water. This core can easily be damaged especially if it is soaked.
Allow the heat recovery core to soak for three hours in warm water and mild soap. Rinse under a heavy stream of water.	For ERV HM core, use a vacuum cleaner or low pressure air jet. It is not recommended to use solvents or detergents as these may damage the media or structure of the core.

FANS

Blower wheels and fan housing should be checked for dirt build-up. If they appear dirty, it may be necessary to remove the blower assembly and then vacuum the dust out through the fan mouth. See next page for instructions on removing the blower assembly.

6. Service

6.1 Parts Replacement

WARNING

High voltage, risk of electric shocks. Only qualified service personnel should service this equipment. The wearing of safety glasses and gloves is recommended since a few diagnosis procedures may require the unit to be in operation while proceeding. Be careful with moving and live parts to prevent injuries.

Verification of all control modes should be checked to ensure proper operation. Refer to 3.2 Sequence of Operation section.

TESTING AND REPLACEMENT OF THE DAMPER ACTUATOR

Check damper operation by switching between LOW - COM or HIGH - COM on the dry contact terminal or by switching through the modes on the optional remote wall control. If the damper does not respond in one or both directions, check all connections.

CAUTION: 120 VAC. Check for 120 volt output across the WHITE/BLACK wires. If 120 volts can be measured at the motor, replace the motor. If 120 volts cannot be measured at the motor, check pins J1-9 at the printed circuit board.

MAIN CIRCUIT BOARD REPLACEMENT

The main circuit board must be replaced if an electronic problem arises. For example, the unit suddenly stops, the unit stays in defrost all of the time or if control functions are not working properly. Ensure that power is reaching the board. Test the blower motors and damper actuators for operation when directly connected to the appropriate power voltage. If the motor and damper actuators function normally, replace the main circuit board.

6.1 Parts Replacement (cont'd)

MOTOR AND BLOWER REMOVAL AND INSTALLATION

Disconnect power from the unit. To determine if the fan motor is burned out, disconnect the four-wire service connector between the motor and cabinet. Connect the motor directly to a 120 volts power source with an electrical cable, as follows:

RED + WHITE Low speed
BLUE + WHITE Medium speed
BLACK + WHITE High speed

If the motor functions normally, there is a problem with the wiring connections or the main circuit board. Check all wiring and replace main circuit board if necessary.

If the blower does not run, it must be replaced. To replace the motor, remove the recovery core from the unit. Disconnect the four-wire service connector from the unit. Remove the fasteners holding the motor assembly in place. Lift the assembly up and out, using one hand under the motor and one hand to steady it. Remove the assembly carefully from the unit to avoid damage to the insulation, shelf, etc. Install the repaired motor assembly by following these instructions in reverse.

REMOVE THESE TWO SCREWS LOCKING PLATE CAPACITOR VD0004A

B6LC and B12LC units

6.2 Troubleshooting

⚠ WARNING

The wearing of safety glasses and gloves is recommended since a few diagnosis procedures may require the unit to be in operation while proceeding. Be careful with moving and live parts to prevent injuries.

SYMPTOMS POSSIBLE CAUSES	SOLUTIONS
Inside air is too dry. Over ventilation -	speed setting too high. Dehumidistat setting is too low.	Adjust speed setting. Set dehumidistat control in a higher position (if applicable).
Persistent condensation on windows, walls, ceilings, etc.	Improper adjustment of dehumidistat control. Improper ventilation rate. Window frame is too cold or leaky.	Adjust dehumidistat control knob to a lower setting. Install a dehumidistat (option). Repair window frame.
Unit stops functioning. Electrical supply	interrupted. Check the unit circuit breaker.
Air from supply diffusers too cold. Imb	balance of supply and exhaust air. Outdoor temperature very cold.	Check fi Iters and cores for blockage. Check balance of airfl ows. Install electric duct heater if necessary.
Unit makes annoying noise. Blower wh	eel out of alignment. Remove the motor/blower assembly and adjust blower wheel.
Core freezing up.	Imbalance of supply and exhaust air. Defrost damper not functioning.	Check fi Iters and cores for blockage. Check balance of airfl ows. Check for operation of both defrost damper actuators.

7.1 B6LC-B12LC Exhaust Defrost

VL0068

Ref.	Part No. Description
1	13036 Hinge kit (male-female)
2	SV1808139 Core Defrost Actuator B6LC-B12LC
	SV63341	Core Defrost Actuator B12LC, Powder Coated
3	SV63327 Core Damper B6LC
	SV63328 Core Damper B12LC
	SV63329 Core Damper B12LC, Powder Coated
4	SV201982 Fresh Air Damper B6LC
	SV63330 Fresh Air Damper B12LC
	SV63331 Fresh Air Damper B12LC Powder Coated
5	SV1808138 Fresh Air Damper Act. B6LC-B12LC
	SV63332	Fresh Air Damper Actuator B12LC Powder Coated
6	SV201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
7	SV1604191 Core Aluminum B6LC-B12LC (unitary)
	SV1604191 Core Aluminum B6LC-B12LC (unitary)
	SV1607787 ERV HM Core B6LC-B12LC (unitary)
8	SV16035 Door Latch-Keeper Kit
9	SV1607456 Drain Fitting B6LC, B12LC (unitary)
10	SV63342	Optional MERV8 Filter for B6LC, B2LC (unitary)

NOTE 1: ② and ③ not available for ERV HM Core

NOTE 2: ⑦ 2 cores required for B6LC units
3 cores required for B12LC units

Ref.	Part No. Description
11*	SV1808130 P	CB Electronic B6LC, B12LC
	SV202382 Th	ermistor B6LC, B12LC
	SV500025914	Relay SPDT 120 VAC, 1 HP,30 A @ 120 VAC, B6LC, B12LC
	SV500025915	Relay DPST 120 VAC, 1 HP,30 A @ 120 VAC, B6LC, B12LC
12	SV1808144 B	ower Ass'y B6LC
	SV1808148 B	ower Ass'y B12LC
	SV1808148P	blower Ass'y B12LC, Powder Coated Option
	SV1808142 B	ower Wheel B6LC, B12LC (not shown)
	SV1808149 Fan	Motor B6LC (not shown)
	SV1808150 Fan	Motor B12LC (not shown)
	SV63110 Capacitor 5 μF LC, B1600705 (not shown)
13	SV208507	Terminal Strip 10-Pin Molex 38721-6710,B6LC, B12LC
* SV63571 Door Assembly B6LC, B12LC
* SV63572		Door Assembly B12LC(Powder Coated Option)
* SV1808145 Accessories kit B6LC, B12LC
* SV63344 Hanger Strap 18" Kit B6LC, B12LC

* Not Shown.

NOTE 3: ⑥ 4 filters for B6LC units
6 filters for B12LC units

NOTE 4: ⑩ 2 filters for B6LC units 3 filters for B12LC units

7.2 B6LC-B12LC Recirculation Defrost

Technical schematic diagram of a mechanical device with numbered components for identification and assembly reference.

Ref.	Part No. Description
1	SV13036 Hinge kit (male-female)
2	SV1604191 Core Aluminum B6LC-B12LC (unitary)
	SV1607787 ERV HM Core B6LC-B12LC (unitary)
3	SV201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
4	SV63333 Recirculation Damper B6LC
	SV63334 Recirculation Damper B12LC
	SV63335 Recirculation Damper B12LC, Powder Coated
5	SV225855	Damper Motor Belimo LMB24-3-T,B1600705, B6LC-B12LC(Recirculation Defrost Option)
6*	SV201603	Terminal Strip 3-Pin Molex 38721-6703B6LC, B12LC (Recirculation Defrost)
	SV63352	Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC,B6LC, B12LC (Recirculation Defrost Option)
	SV500025914	Relay SPDT 120 VAC, 1 HP,30 A @ 120 VAC, B6LC, B12LC
	SV64098 Transformer 120-24V 40VA
7	SV16035 Door Latch-Keeper Kit
8	SV1607456 Drain Fitting B6LC, B12LC (unitary)
9	SV63342 Filter Optional MERV 8, B6LC, B12LC (unitary)

* Not Shown.
NOTE 1: ② 2 cores required for B6LC unit 3 cores required for B12LC unit
NOTE 2: ③ 4 filters for B6LC unit 6 filters for B12LC unit
NOTE 3: ⑨ 2 filters for B6LC unit 3 filters for B12LC unit

Ref.	Part No. Description
10*	SV1808130 PCB Electronic B6LC, B12LC
	SV202382 Thermistor B6LC, B12LC
	SV500025914	Relay SPDT 120 VAC, 1 HP,30 A @ 120 VAC, B6LC, B12LC
	SV500025915	Relay DPST 120 VAC, 1 HP,30 A @ 120 VAC, B6LC, B12LC
11	SV1808144 Blower Ass'y B6LC
	SV1808148 Blower Ass'y B12LC
	SV1808148P Blower Ass'y B12LC Powder Coated Opt.
	SV1808142 Blower Wheel B6LC, B12LC (not shown)
	SV1808149 Fan Motor B6LC (not shown)
	SV1808150 Fan Motor B12LC (not shown)
	SV63110	Capacitor 5 μF LC, B1600705 (not shown)
12	SV208507	Terminal Strip 10-Pin Molex 38721-6710, B6LC, B12LC
*	SV63571	Door Assembly B6LC, B12LC
*	SV63572	Door Assembly B12LC(Powder Coated Option)
*	SV1808145 Accessories kit B6LC, B12LC
*	SV63344	Hanger Strap 18" Kit B6LC, B12LC,B1600705
*	SV64228	Backdraft damper B6LC recirculation
*	SV64229	Backdraft damper B12LC recirculation

* Not Shown.

Appendix A

MOUNTING DIAGRAM

B6LC AND B12LC UNITS

Reinforced Rubber Strap Recirculation Module (Factory Installed) U Channel (Supplied by others) Recirculation Module (Factory Installed) Rubber Vibration Isolator (Supplied by others) Wooden Curb (Supplied by others) Bolt to Floor Space must be left to allow connection of drain lines with adequate slope for drainage NOTE: Diagrams show standard unit configuration. For units with the reversed door option, the door will be located here. 3/8" (10mm) Threaded Rod (Supplied by others)

UNIT DIMENSIONS

B-1: B6LC (WITHOUT RECIRCULATION MODULE)

NOTES:
Center of gravity
→ Direction of airflow

B6LC POLY CORE B6LC ALUMINUM CORE						B6LC ERV HM CORE
PTS	LB.	Kg	PTS	LB.	Kg	PTS	LB.	Kg
A	38.49	17.45	A	44.21	20.00	A	40.80	18.88
B	24.96	11.32	B	28.67	13.00	B	26.52	12.27
C	51.29	23.26	C	58.92	26.72	C	54.30	25.12
D	33.26	15.08	D	38.21	17.30	D	35.31	16.33
TOTAL	148.00	67.13	TOTAL	170.00	77.11	TOTAL	158.96	72.60

CONNECTION TABLE
CONNECTION SIZES
A	14 Gauge wire nut
B	Condensate drain fitting (2 x) 3/4" NPT

STRAP MOUNTING LOCATION 2.750" 23.500" 14.000" 6.500" OUTDOOR AIR OPENING 8.000" 24.500" 4.000" RETURN AIR OPENING 8.000" 7.705" -14.103" DRAIN LINE FITTING

RIGHT SIDE
A MINIMUM OF 15.000" CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR
REMOVAL OF HEAT RECOVERY CORES, FANS, ETC. THE ACCESS DOOR CAN BE REMOVED FROM CABINET WITH ONLY 2.000* OF CLEARANCE.

CORE 15.000" REVERSED DOOR OPTION

12.005' A B C 13.375' D TOP

34.000" EXHAUST AIR SUPPLY AIR 19.207" 5.125" OUTDOOR AIR RETURN AIR NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION, INTERIOR COMPONENTS WILL APPEAR AS A MIRROR IMAGE OF THE ABOVE DIAGRAM.

FRONT

4.000° 28.005° 14.000° 5.859° A LINE POWER EXHAUST AIR OPENING 4.028° LOW VOLTAGE TERMINAL STRIPS SUPPLY AIR OPENING CONTROL BOX ACCESS 3.535° 10.005° B REVERSE DOOR OPTION

LEFT SIDE
A MINIMUM OF 12.000* CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR REMOVAL OF CONTROL BOX.

CONTROL PLATE 12.000"

VK010BA

UNIT DIMENSIONS

B-2: B6LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)

B6LC POLY COREwith recirculation module			B6LC ALUMINUM COREwith recirculation module			B6LC ERV HM COREwith recirculation module
PTS	LB.	Kg	PTS	LB.	Kg	PTS	LB.	Kg
TOTAL	197	90	TOTAL	231 105		TOTAL	206 95

Strap Mounting Location 14.00" 7.10" : Fresh Air From Outside 8.00" 4.00" Exhaust Air From Building 8.00" 1.75" Access Door Drain Fitting 14.10"

49.550" 19.207" -5.125"

NOTE: For units with the reversed door option, interior components will appear as a mirror image of the above diagram.

4.00' 1.75' 28.12' 14.00' 2.75' Line Power Exhaust Air to Outdoors Dry Contacts 24.50' 8.00' 4.00' 8.00' 3.53' Fresh Air to Building Reverse Door Option Control Box

A minimum of 15.00" clearance from any obstruction is required for removal of heat recovery cores, fans, etc. The access door can be removed from cabinet with only 2.00" of clearance.
A minimum of 12.00° clearance from any obstruction is required for removal of control box.
VK0109A

UNIT DIMENSIONS

B-3: B12LC (WITHOUT RECIRCULATION MODULE)

NOTES:
Center of gravity

A 20.620° C 14.250° B D

TOP

41.200" 40.326" 10.000" 20.000" 8.000" EXHAUST AIR TO OUTDOORS FRESH AIR TO BUILDING 5.716" A LINE POWER 4.028" LOW VOLTAGE TERMINAL STRIPS CONTROL BOX ACCESS 11.325" B REVERSE DOOR OPTION

	As of December 31,
	2017	2016
Net earnings (loss) on the basis of continuing operations	1,458	1,394
Earnings per share (Basic) on the basis of continuing operations	0.43	0.42

STRAP MOUNT LOCATION 2.750° 4.000° ACCESS DOOR FRESH AIR FROM OUTDOORS EXHAUST AIR FROM BUILDING 20.000° 20.000° 9.878° 8.000° 24.500° 8.000° 20.000°

RIGHT SIDE

34.000" EXHAUST AIR OUTDOOR AIR SUPPLY AIR RETURN AIR 19.20" 5.125" NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION, INTERIOR COMPONENTS WILL APPEAR AS A MIRROR IMAGE OF THE ABOVE DIAGRAM.

FRONT VIEW
NOTE: THIS MODEL HAS A DAMPER LOCATED ON THE OUTDOOR INTAKE CONNECTION. THIS DAMPER WILL CLOSE DURING A DEFROST CYCLE OR WHEN THE UNIT IS PLACED IN THE 'OFF' POSITION WITH POWER MAINTAINED TO THE UNIT. THIS DAMPER IS NOT DESIGNED AS A BACKDRAFT DAMPER AND WILL REMAIN OPEN IF POWER IS DISCONNECTED FROM THE UNIT FOR ANY REASON.
A MINIMUM OF 15.000" CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR REMOVAL OF HEAT RECOVERY CORES, FANS, ETC. THE ACCESS DOOR CAN BE REMOVED FROM CABINET WITH ONLY 2.000" OF CLEARANCE.
A MINIMUM OF 12.000' CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR REMOVAL OF CONTROL BOX.

ACCESS DOOR CORE 15.000° REVERSED DOOR OPTION

CONTROL COVER 12.000°

VK0110A

UNIT DIMENSIONS

B-4: B12LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)

Strap Mounting Location Access Door Drain Fitting 20.000" 10.000" Fresh Air From Outdoor 4.00" Exhaust Air From Building 8.00" 1.75" 20.000"

49.550° 19.207° 5.125°

NOTE: For units with the reversed door option, interior components will appear as a mirror image of the above diagram.

41.24" 10.00" 20.00" 1.75" 2.75" Line Power Exhaust Air To Outside Dry Contacts 8.00" 4.00" 24.50" 8.00" 3.53" Fresh Air To Building Reversed Door Option Control Box

A minimum of 12.00" clearance from any obstruction is required for removal of control box.

Control Cover 12.00°

VK0111A
A minimum of 15.00" clearance from any obstruction is required for removal of heat recovery cores, fans, etc. The access door can be removed from cabinet with only 2.00" of clearance.

Access Door Core 15.00" Reversed Door Option

Appendix C

BALANCING DAMPERS POSITION

Gravity Backdraft Damper (for recirculation defrost option only) Exhaust Air to Outdoors Balancing Damper Min.12" (305 mm) Reverse Door Option Min. 8" (203 mm) (Optional) Canvas Vibration Isolator Fresh Air From Outdoors VJ0135A Canvas Vibration Isolator Exhaust Air From Building

Appendix D

DRAIN CONNECTIONS

Plastic drain fitting Min. 3" [76 mm] 3/4" NPT coupler Min. 1" [25 mm] Min. 4" [102 mm] Min. 1" [25 mm] To drain Water trap Plastic hose Copper or plastic pipe Min. 3" [76 mm] Min. 4" [102 mm] To drain NOTES:

NOTES:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum 1/4" per foot.
V00002A

TERMINAL CONTROL DIAGRAMS

E-1: TERMINAL LABEL E-2: WALL CONTROL CONNECTION

A low voltage remote control wiring interface is provided on the unit. The connections for the low voltage remote wiring are located on two terminals adjacent to the exhaust fan outlet (or adjacent to the supply fan outlet on the B1600705 unit). All fi eld installed wiring must be low voltage class II.

REMOTE WALL CONTROL

Optional wall control requires a 4 wire LVT-24 gauge (or equivalent). This remote wall control runs on 12 VDC.

LOW VOLTAGE CONTROLS

All other terminals are dry contacts.

Low Voltage terminal control consists of the following:

WALL CONTROL

4 wire LVT 24 gauge minimum

OCCUPIED (NIGHT SET BACK) TIMER/SENSOR

24 VAC, needs dry contact

LOW - COM - HIGH

Remote fan switching requires a single pole, double throw switch (SPDT)

FAN INTERLOCK RELAY OUTPUT (FF)

Dry contact closes on ventilation or defrost. Used to control external fan.

One type of remote wall control is available: the Slide Switch Wall Control with fan switch and dehumidistat control.

The remote wall controls work with the microprocessor electronic control within the unit to control ventilation sequences. This wall control requires a 4-wire connection to the unit as shown below.

Without the wall control, fans can be operated with a remote fan switch as shown in Appendix E-4.

NOTE:

When using a wall control, never use the the LOW, COMMON and HIGH terminals.

WALL CONTROL COMMANDE MURALE Black/Noir Green/Vert Red/Rouge Yellow/Jaune ON-OFF/ MARCHE- ARRÊT LOW BASSE COMMON COMMUN HIGH HAUTE CLASS 2 LOW VOLTAGE / CLASSE 2 BASSE TENSION NOTE: Use of 24 VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs. L'utilisation d'un circuit 24 VCA nécessite des contacts isolés (ex. thermostat) pour éviter l'interconnexion des sorties de Classe 2.

VE0466A

WALL CONTROL COMMANDE MURALE Black/Noir Green/Vert Red/Rouge Yellow/Jaune ON-OFF/MARCHE-ARRÊT LOW BASSE COMMON COMMUN HIGH HAUTE CLASS 2 LOW VOLTAGE / CLASSE 2 BASSE TENSION NOTE: Use of 24 VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs. L'utilisation d'un circuit 24 VCA nécessite des contacts isolés (ex. thermostat) pour éviter l'interconnexion des sorties de Classe 2.

Appendix E (cont'd)

TERMINAL CONTROL DIAGRAMS

E-3: OCCUPIED TIMER/SENSOR CONNECTION (NOT SOLD BY BROAN)

Occupancy control is achieved by connection to the terminal interface shown below. These terminals require a dry contact which could be provided by a number of types of controls such as a timer, light sensor, occupancy sensor, building management system, or other. The unit will not operate unless these contacts are closed!!

The illustration below shows a factory installed jumper and programmable timer option (supplied by others).

E-4: REMOTE FAN CONTROL

Remote fan control can be achieved by connecting dry contact controls to the terminal interface at terminals labeled: LOW - COM - HIGH.

These controls could be the following: SPDT switch, dehumidistat, CO_2 sensor, light sensor, timer, building management system, etc., supplied by others.

The illustration below represents a switch connected to the unit.

JUMPER (factory installed) WALL CONTROL COMMANDE MURALE Black/Noir Green/Vert Red/Rouge Yellow/Jaune ON/OFF/MARCILE-ARRÊT LOW/BASE COMMON COMMON HIGH HAUTE CLASS 2 LOW VOLTAGE / CLASSE 2 BASSE TENSION NOTE: Use of 24 VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs. L'utilisation d'un circuit 24 VCA nécessite des contacts solés (ex. thermostat) pour évier l'interconnexion des sorties de Classe 2. NSB Timer 24 (-) VAC 24 (+) VAC OCC. CONTROL (INPUT installed) WALL CONTROL COMMANDE MURALE Black/Noir Green/Vert Red/Rouge Yellow/Jaune ON/OFF/MARCILE-ARRÊT LOW/BASE COMMON COMMON HIGH HAUTE CLASS 2 LOW VOLTAGE / CLASSE 2 BASSE TENSION NOTE: Use of 24 VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Clas 2 outputs. L'utilisation d'un circuit 24 VCA nécessite des contacts isolés (ex. thermostat) pour évier l'interconnexion des sorties de Classe 2. VE0467A

WALL CONTROL COMMANDE MURALE Black/Noir Green/Vert Red/Rouge Yellow/Jaune ON-OFF/ MARCHE- ARRET COMMON COMMUN HIGH HAUTE CLASS 2 LOW VOLTAGE / CLASSE 2 BASSE TENSION NOTE: Use of 24 VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs. L'utilisation d'un circuit 24 VCA nécessite des contacts isolés (ex. thermostat) pour éviter l'interconnexion des sorties de Classe 2. REMOTE FAN SWITCH LOW HIGH

Appendix F

CONTROL BOX ASSEMBLY B6LC AND B12LC

VE0001A Unit cabinet Control cover plate Remote control access plate Remote wiring terminal block Control box

MAKE-UP HEAT REQUIREMENTS

Although the B6LC and B12LC models have good efficiencies, the supply air could be colder than the ambient room air. It is possible to eliminate the discomfort associated with this temperature difference by installing an electric duct heater. This will temper the air before it is distributed throughout the building. The tables below gives the heating requirements at different temperatures and airflows. NOTE:
The data does not reflect a reduction in effectiveness due to frosting.
Based on the standard air at: 1.2 Kg/m3 and Cp = 1.0 KJ/Kg°C
13.35 lb/ft3 and Cp = .24 Btu/lbm°F

B6LC UNITS		Outdoor Air -40°F Outdoor Air -22°F Outdoor Air -4°F Outdoor Air 14°F Outdoor Air 32°F
		Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air TemperatureDesired Air TemperatureDesired Air Temperature
Supply Air (CFM)	Supply Air (L/s)	55°F 68°F 73°F			55°F 68°F 73°F			55°F 68°F 73°F			55°F 68°F 73°F			55°F 68°F 73°F
		kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW
700 33	0 7.4 10.4	11.5 5.6	8.6 9.7 3	9 6.8 8.0	2.1 5.1 6	2 0.3 3.3	4.4
650 30	7 6.6 9.4	10.5 5.0 7	8.8 9.3 4	6.2 7.3 1	8 4.6 5.6	0.2 3.0 4	0
600 28	3 5.9 8.5	9.4 4.5 7	0 8.0 3.0	5.6 6.5 1.6	4.1 5.1	0.1 2.7 3.7
550 25	9 5.2 7.6	8.5 3.9 6	3 7.2 2.6	5.0 5.9 1.3	3.7 4.6	0.1 2.4 3.3
500 23	6 4.0 6.1	7.0 3.0 5	1 5.9 1.9	4.0 4.9 0.9	3.0 3.8	1.9 2.7
450 21	2 3.0 4.9	5.6 2.1 4	0 4.8 1.3	3.2 3.9 0.4	2.3 3.1	1.5 2.2
400 18	9 2.2 3.9	4.6 1.5 3	2 3.9 0.9	2.5 3.2 0.2	1.9 2.5	1.2 1.8

B12LC UNIT		Outdoor Air -40°F				Outdoor Air -22°F			Outdoor Air -4°F			Outdoor Air 14°F			Outdoor Air 32°F
		Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air Temperature
Supply Air (CFM)	Supply Air (L/s)	55°F	68°F	73°F	55°F	68°F	73°F	55°F	68°F	73°F	55°F	68°F	73°F	55°F	68°F	73°F
		kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW	kW kW
1250 590	14.6	19.9	21.9	11.2	16.5	18.5	7.8	13.1	15.2	4.4	9.7	11.8	1.0	6.3	8.4
1200 566	13.5	18.6	20.6	10.4	15.5	17.4	7.2	12.3	14.3	4.0	9.1	11.1	0.8	5.9	7.9
1150 542	12.6	17.4	19.3	9.6	14.5	16.4	6	11.5	13.4	3.6	8.5	10.4	0.7	5.5	7.4
1100 519	11.2	15.9	17.7	8.5	13.2	15.0	5	8	10.5	12.3	3.1	7.7	9.6	0.4	5	0.6	8
1050 495	10.7	15.2	16.9	8.1	12.6	14.3	5	5	10.0	11.7	2.9	7.4	9.1	0.4	4	8	6.5
1000 472	9.9	14.1	15.7	7.4	11.7	13.3	5.0	9.3	10.9	2.6	6.9	8.5	0.2	4.4	6.1
900 425	8.5	12.4	13.8	6.4	10.2	11.7	4.3	8.1	9.6	2.2	6.0	7.5	0.1	3.9	5.4
800 377	7.0	10.4	11.7	5.2	8.6	9.9	3	4	6.8	8.2	1.7	5.0	6.4	-	3.3	4.6
700 330	5.1	8.1	9.3	3.7	6.7	7.9	2.3	5.3	6.5	0.9	3.9	5.1	-	2.5	3.7

Appendix H

WIRING DIAGRAMS

WARNING

• Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation. If the fuse blows, disconnect the unit from its power source. Discontinue using the unit and contact technical support.

B6LC, B12LC - Exhaust Defrost - Normal Low Speed

SYSTEM DIAGRAM

graph TD
    A["Ventilation Fan Motors"] --> B["(Exhaust)"]
    A --> C["(Supply)"]
    B --> D["M1"]
    C --> E["M2"]
    D --> F["Low Speed Relay"]
    D --> G["High Speed Relay"]
    D --> H["Defrost Relay"]
    E --> I["Main Electrical Enclosure"]
    F --> J["K1"]
    G --> K["K2"]
    H --> L["K3"]
    J --> M["J1"]
    K --> N["J2"]
    L --> O["J3"]
    M --> P["J4"]
    N --> Q["J3-9"]
    O --> R["J3-8"]
    P --> S["J3-7"]
    Q --> T["J3-6"]
    R --> U["J3-5"]
    S --> V["J3-4"]
    T --> W["J3-3"]
    U --> X["J3-2"]
    V --> Y["J3-1"]
    W --> Z["J3-0"]
    X --> AA["From/To"]
    Y --> AB["From/To"]
    Z --> AC["From/To"]
    AA --> AD["From/To"]

ITEM	POSITION	SETTING
JU1	A OFF
	B OFF
	C	OFF
	D	ON
	E	ON
	F	ON
	G	ON

ITEM	DESCRIPTION
K1	Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC
K2
K3	Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
F1	Fuse 5 A fast acting and fuse holder
UCB1	Electronic Controller

VE0468A

Appendix H (cont'd)

WIRING DIAGRAMS

WARNING

• Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation. If the fuse blows, disconnect the unit from its power source. Discontinue using the unit and contact technical support.

B6LC, B12LC - Exhaust Defrost - Normal Low Speed (cont'd)

LOGIC DIAGRAM

WIRING COLOR CODE BK BLACK O ORANGE BK/R BLACK/RED R RED BK/Y BLACK/YELLOW WH WHITE BL BLUE WH/BL WHITE/BLUE BN BROWN WH/R WHITE/RED G GREEN WH/Y WHITE/YELLOW G/Y GREEN/YELLOW Y YELLOW 120 VAC FIELD NEUTRAL LINE WIRING GND G BK ① ② WH CN1 14 AWG KH K3 CN5.1 BW K1-1 BW K2-1 KH TP COM M2 (Supply) BN BN G/Y CN2 ① WH TPO R LOW ③ BL MED ④ BK/Y HIGH M1 (Exhaust) BN BN G/Y J1.1 WH J1.3 BK F1 BK BW K1-2 BW K2-2 KN3 ① WH TP COM R LOW ③ BL MED ④ BK/Y HIGH M1 (Supply) BN BN G/Y CN5.2 J1.2 WH/R J1.4 BL K1 J1.5 WH/Y J1.6 o K2 J1.8 WH/BL J1.9 BK/R K3 CN4 ① ② Main Electrical Enclosure Ref: 1107006_REV-A

VE0469A

Appendix H (cont'd)

WIRING DIAGRAMS

▲WARNING

• Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation. If the fuse blows, disconnect the unit from its power source. Discontinue using the unit and contact technical support.

B6LC, B12LC - Recirculation Defrost - Normal Low Speed

SYSTEM DIAGRAM

Remote Electrical Enclosure

graph TD
    subgraph Main Electrical Enclosure
        A["Recirculation Relay"] -->|K3| B["Low Speed Relay"]
        C["High Speed Relay"] -->|K1 K2| D["Main Electrical Enclosure"]
        E["ICU B1"] -->|J1| F["10K Defrost Thermistor"]
        G["J4"] -->|J2| H["Main Electrical Enclosure"]
    end

    subgraph Electrical Control
        I["From/To"] --> J["From/To"]
    end

    subgraph Ventilation Fan Motors
        K["M1"] --> L["Exhaust"]
        M["M2"] --> N(Supply)
    end

    subgraph External Control
        O["ITEM"] --> P["POSITION"]
        P --> Q["SETTING"]
        Q --> R["ITEM"]
    end

    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style I fill:#ccf,stroke:#333
    style O fill:#ccf,stroke:#333

ITEM	POSITION	SETTING
JU1	A OFF
	B OFF
	C	OFF
	D	ON
	E	ON
	F	ON
	G	ON

ITEM	DESCRIPTION
K1	Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC
K2
K3	Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
K4	Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC
K5	Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
F1	Fuse 5 A fast acting and fuse holder
F2	Fuse 0.25 A fast acting and fuse holder
X1	24 VAC Transformer 40 VA
UCB1	Electronic Controller

Ref: 1107007_REV-A

Appendix H (cont'd)

WIRING DIAGRAMS

WARNING

• Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation. If the fuse blows, disconnect the unit from its power source. Discontinue using the unit and contact technical support.

B6LC, B12LC - Recirculation Defrost - Normal Low Speed (cont'd)

LOGIC DIAGRAM

WIRING COLOR CODE BK BLACK O ORANGE BK/R BLACK/RED R RED BK/Y BLACK/YELLOW WH WHITE BL BLUE WH/BL WHITE/BLUE BN BROWN WH/R WHITE/RED G GREEN WH/Y WHITE/YELLOW G/Y GREEN/YELLOW Y YELLOW 120 VAC FIELD NEUTRAL LINE GND G BK ① ② WH CN1 14 AWG WH BK K1-1 BK K2-1 BK/Y CN5.2 K3 WH TP COM LOW M2 (Supply) Ref: 1107007_REV-A CN3 ① WH TP COM ② R LOW ③ BL MED ④ BK/Y HIGH M1 (Exhaust) GNY K3 J1.2 WH BK K1-2 BK K2-2 BK Y M1 (Exhaust) GNY J1.3 BK F1 BK BK CN5.5 ③ ② ① J1.4 R ⑥ ⑤ ④ J1.5 WH/Y ⑨ ⑧ ⑦ J1.6 o K2 J1.8 WH/BL WH/R CN5.4 CN5.3 BK/R CN5.4 ④ ⑤ ⑥ B/K B/K/R BK/R K3 K4 CN4 ② R K4 ① R CN5 ④ ⑤ ⑥ B/K B/K/Y K5 K5 R O X1 K4 BL K5 X1 K5 ① ② ③ ④ ⑤ ⑥ C N6

Main Electrical Enclosure Remote Electrical Enclosure (Recirc.)

VE0471A