Broan B6LC, B12LC, B1600705 User Manual

Light Commercial
Heat Recovery Ventilators and
Energy Recovery Ventilators
Installation, Operation
and Service Instructions
VB0002
VB0003
VB0001
B12LC
22638 rev. 05
Table of Contents
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1. Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
2.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Mounting Location Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.3 Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.4 Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.5 Internal Grilles and diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.6 Exterior Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.7 Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.8 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
3.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.4 Remote Wall Control (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4. Airflow Measurements and Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Maintenance and Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.1 Bi-Monthly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5.2 Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
6. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
6.1 B6LC-B12LC Exhaust Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 6LC-12LC Recirculation Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
6.3 B1600705 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Appendix A - Mounting Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11
Appendix B - Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-16
Appendix C - Balancing Dampers Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Appendix D - Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Appendix E - Terminal Control Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20
Appendix F - Control Box Assembly B6LC and B12LC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Appendix G - Make-up Heat Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22
Appendix H - Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-27
Appendix I - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1. Safety Considerations
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 filters.
Observe precautions marked in literature and on labels attached to unit. Follow all safety codes.
WARNING
Disconnect main power switches to unit before performing service or maintenance. Electric shock can cause personal injury or death.
2
2. Installation
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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” 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
It is recommended to wear safety glasses and gloves while performing these instructions.
2.3 Mounting Options
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” 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” 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). 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, B12LC 14” x 8” (356 mm x 203 mm)
B1600705 20” x 8” (508 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.
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” 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.
All ports on the B1600705 unit have 2” flanges to facilitate the installation of the ductwork. Please note the “Fresh Air From Outdoors” connection is factory set to be the left side upper port. It is possible to reverse the operation of the defrost damper in order to use the port on top of the cabinet for “Fresh Air From Outdoors” connection.
To change the «Fresh Air From Outdoors» from the side to the top use the following directions. For port locations see Appendix B.
Remove the cover of the damper motor with a flat screwdriver. Reverse the ORANGE and RED wires by moving the ORANGE from terminal no. 2 to terminal no. 3 and moving the RED wire from terminal no. 3 to terminal no. 2. The end result in order to have the “Fresh Air From Outdoors” connection to the top port will be: no. 1 ­WHITE, no. 2 - RED, no. 3 - ORANGE.
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. 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. 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 of smooth radius elbows or square elbows with turning vanes to achieve maximum performance.
3
2. Installation (cont’d)
3. Controls
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” 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 140 inches.
2.7 Drains
The drain fittings provided with the unit will accept a 3/4” 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” 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).
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 B1600705 B12LC
VO LTAGE 120 V 120 V 120 V
MCA 9.50 A 6.63 A 14.30 A
MOP 12.00 A 9.13 A 20.00 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.
S
PEED SELECTION (6LC /12LC UNITS ONLY)
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.
The B1600705 unit is two speed. Low speed can be initiated by creating a closure across LOW - COM or high speed can be initiated by creating a closure across HIGH - COM.
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. For B6LC and B12LC units only, if 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. For B6LC and B12LC units only, if 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. For B6LC and B12LC units only, if equipped with recirculation module, the internal defrost damper opens recirculation opening.
• Power connected, FF control contacts close during unit ventilation or defrost cycle.
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3. Controls (cont’d)
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5. Maintenance and Service
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 - B6LC and B12LC units only). In cold temperatures, defrost cycles will remove frost from the recovery cores to maintain good operation.
E
XHAUST 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 to maintain ventilation. This process prevents the build up of ice in the core. Defrost is temperature initiated at 23°F to -22°F and time based.
WARNING
A negative building pressure may develop during the defrost cycle with possible backdrafting fumes from combustion equipment.
RECIRCULATION DEFROST MODULE (OPTIONAL - FACTORY INSTALLED)
The Recirculation Defrost Module is only available with the B6LC and B12LC units. The defrost cycle is electronically controlled in response to the outdoors temperature 23°F to -22°F. 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 two options are available.
SLIDE SWITCH TYPE
Dehumidistat to engage high speed exchange. Slide switch operation supporting continuous low exchange and continuous high exchange.
VT10W (
Ideal for pool dehumidification. Dehumidistat to engage high speed exchange. Push-button operation supporting: intermittent (stand-by) ventilation, continuous low exchange, continuous high exchange, maintenance indicator light and exchange indicator light.
FOR B1600705 UNIT ONLY)
4. Airflow Measurement and Balancing
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.
5.1 Bi-Monthly Maintenance
WARNING
Disconnect power before maintaining unit.
Bi-monthly maintenance should include:
IR FILTERS
A
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.
VL0001
2
B6LC and B12LC units
Washable foam filter
 MEF filter - optional
1 or 2
1
VL0002A
B1600705 unit
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
1
1
5. Maintenance and Service (cont’d)
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WARNING
Disconnect power before maintaining unit.
5.2 Annual Maintenance
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.
HEAT RECOVERY CORE
The heat 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.
Allow the heat recovery core to soak for three hours in warm water and mild soap. Rinse under a heavy stream of water.
CAUTION
Hot water and a strong cleaning agent could damage the polypropylene core. Ensure the core is reinstalled in the unit in the correct orientation. Use the sticker as a guide.
ERV HM C
ORE
CAUTION
Do not soak the ERV HM core in water. This core can easely be damaged especially if it is soaked.
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 column for instructions on removing the blower assembly.
SYSTEM OPERATION CHECK
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.
7000 unit ONLY: Check for 24 volt output between the WHITE/RED and the WHITE/ORANGE wires at the damper motor. If 24 volts can be measured at the damper motor, the problem is either in the connections, the defrost relay or the main circuit board.
6LC/12LC units ONLY: (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.
M
OTOR 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 115 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 or energy 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
VD0004A
LOCKING PLATE
CAPACITOR
B6LC and B12LC units
THUMBSCREW
SERVICE CONNECTOR
VD0001A
B1600705 unit
6
6.1 B6LC-B12LC Exhaust Defrost
6. Service parts
B
N
M
L
VL0068
Ref. Part No. Description
B
C
D
E
F
G
H
I
J
K
SV13036 Hinge kit (male-female)
SV1808139 Core Defrost Actuator B6LC-B12LC
SV63341 Core Defrost Actuator B12LC, Powder Coated
SV63327 Core Damper B6LC
SV63328 Core Damper B12LC
SV63329 Core Damper B12LC, Powder Coated
SV201982 Fresh Air Damper B6LC
SV63330 Fresh Air Damper B12LC
SV63331 Fresh Air Damper B12LC, Powder Coated
SV1808138 Fresh Air Damper Actuator B6LC-B12LC
SV63332 Fresh Air Damper Act. B12LC Powder Coated
SV201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
SV1808147 Core Poly B6LC-B12LC (unitary)
SV1604191 Core Aluminum B6LC-B12LC (unitary)
SV1607787 ERV HM Core B6LC-B12LC (unitary)
SV16035 Door Latch-Keeper Kit
SV1607456
SV63342
Drain Fitting B6LC, B12LC, B1600705 (unitary)
Filter Optional MERV 8, B6LC, B12LC (unitary)
C D
E
F
G
JK
H
I
Ref. Part No. Description
SV1808130 PCB Electronic B6LC, B12LC, B1600705
SV202382 Thermistor B6LC, 1B2LC, B1600705
L *
SV500025914
SV500025915
SV1808144 Blower Ass’y B6LC
SV1808148 Blower Ass’y B12LC
SV1808148P Blower Ass’y B12LC Powder Coated Option
SV1808142 Blower Wheel B6LC, B12LC (not shown)
M
SV1808149 Fan Motor B6LC (not shown)
SV1808150 Fan Motor B12LC (not shown)
SV63110 Capacitor 5 F LC, B1600705 (not shown)
SV208507
N
* SV63571 Door Assembly B6LC, B12LC
* SV63572
* SV1808145 Accessories kit B6LC, B12LC
* SV63344
* Not Shown.
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC, B6LC, B12LC
Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC, B6LC, B12LC
Terminal Strip 10-Pin Molex 38721-6710, B6LC, B12LC
Door Assembly (Powder Coated Option)
Hanger Strap 18" Kit B6LC, B12LC, B1600705
B12LC
NOTE: C and D not available for ERV HM Core
NOTE 2: H 2 cores required for B6LC unit
3 cores required for B12LC unit
NOTE 3: G 4 filters for B6LC unit
6 filters for B12LC unit
NOTE 4: K 2 filters for B6LC unit
3 filters for B12LC unit
7
6.2 B6LC-B12LC Recirculation Defrost
H
6. Service parts (cont’d)
B
M
L
K
VL0069
Ref. Part No. Description
B
C
D
E
F
G *
H I
J
* Not Shown.
NOTE 1: C 2 cores required for B6LC unit
3 cores required for B12LC unit
NOTE 2: D 4 filters for B6LC unit
6 filters for B12LC unit
SV13036 Hinge kit (male-female)
SV1808146 Core Poly UL B6LC-B12LC (unitary)
SV1604191 Core Aluminum B6LC-B12LC (unitary)
SV1607787 ERV HM Core B6LC-B12LC (unitary)
SV201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
SV63333 Recirculation Damper B6LC
SV63334 Recirculation Damper B12LC
SV63335 Recirculation Damper B12LC, Powder Coated
SV225855
SV066161 Fuse Holder B6LC, B12LC, B1600705
SV201603
SV63352
SV066176
SV500025914
SV64098 Transformer 120-24V 40VA
SV16035 Door Latch-Keeper Kit
SV1607456 Drain Fitting B6LC, B12LC, B1600705 (unitary)
SV63342
Damper Motor Belimo LMB24-3-T, B1600705, B6LC-B12LC (Recirculation Defrost Option)
Terminal Strip 3-Pin Molex 38721-6703 B6LC, B12LC (Recirculation Defrost)
Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC, B6LC, B12LC (Recirculation Defrost Option)
Fuse 0.25 A, 250 V Time Delay 1.25" MDL B6LC-B12LC (Recirculation Defrost Option)
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC, B6LC, B12LC
Filter Optional MERV 8, B6LC, B12LC (unitary)
C
J
DE F
I
Ref. Part No. Description
SV1808130 PCB Electronic B6LC, B12LC, B1600705
SV202382 Thermistor B6LC, B12LC, B1600705
K *
SV500025914
SV500025915
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)
L
SV1808149 Fan Motor B6LC (not shown)
SV1808150 Fan Motor B12LC (not shown)
SV63110 Capacitor 5 F LC, B1600705 (not shown)
SV208507
M
* SV63571 Door Assembly B6LC, B12LC
* SV63572
* SV1808145 Accessories kit B6LC, B12LC
* SV63344
* SV64228 Backdraft damper B6LC recirculation
* SV64229 Backdraft damper B12LC recirculation
* Not Shown.
NOTE 3: J 2 filters for B6LC unit
3 filters for B12LC unit
D
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC, B6LC, B12LC
Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC, B6LC, B12LC
Terminal Strip 10-Pin Molex 38721-6710, B6LC, B12LC
Door Assembly (Powder Coated Option)
Hanger Strap 18" Kit B6LC, B12LC, B1600705
G
B12LC
8
6.3 B1600705
E
F G
H
6. Service parts (cont’d)
B
DC
L
K
VL0070
Ref. Part No. Description
SV16035 Door Latch-Keeper kit
B
Damper Motor Belimo LMB24-3-T,
SV225855
C
SV1604178 Fresh Air Damper
D
SV1604168 Blower Ass’y B1600705
SV1604177 Blower Wheel (not shown)
E
SV1604169 Fan Motor B1600705 (not shown)
SV63110 Capacitor 5 F LC, B1600705 (not shown)
SV202790
F
SV1808130 PCB Electronic B6LC, B12LC, B1600705
SV202382 Thermistor B6LC, B12LC, B1600705
SV63117 Transformer B1600705
G *
SV63345
SV066161 Fuse Holder B6LC, B12LC, B1600705
SV066169
B1600705, B6LC-B12LC (Recirculation Defrost Option)
Terminal Strip 7-Pin Molex 38721-6707, B1600705
Relay DPDT 120 VAC, 1/2 HP, 15 A @ 120 VAC, B1600705, B6LC, B12LC
Fuse 0.5 A, 250 V Time Delay 1.25" MDL B1600705
J
I
Ref. Part No. Description
SV13036 Hinge Kit (male-female)
H
SV1604156 Core Poly B1600705
I
SV1607456
J
SV134147
K
SV134145
L
* SV1608701
* SV63573
* SV027123 Anti-vibration Bushing B1600705 (unitary)
* SV63344
* Not Shown.
Drain Fitting B6LC, B12LC, B1600705 (unitary)
Filter SWF 18.6" x 15.6" x 1" B1600705 Exhaust (unitary)
Filter SWF 19" x 22.75" x 1" B1600705 Supply (unitary)
Optional MERV 7, Filter B1600705 Supply (unitary)
Door Ass’y B1600705 (Powder Coated Option)
Hanger Strap 18" Kit B6LC, B12LC, B1600705
9
Reinforced Rubber Strap
MOUNTING DIAGRAMS
B6LC AND B12LC UNITS
Recirculation Module
(Factory Installed)
U Channel
(Supplied by others)
Appendix A
Diagrams show standard unit configuration.
NOTE:
For units with the reversed door option, the door will be located here.
Recirculation Module
(Factory Installed)
3/8" (10mm) Threaded Rod (Supplied by others)
Recirculation Module
(Factory Installed)
Bolt to Floor
Space must be left to allow connection of drain lines with adequate slope for drainage
VD0002A
Rubber Vibration Isolator
(Supplied by others)
Wooden Curb (Supplied by others)
10
VD0003A
Dry Contacts
MOUNTING DIAGRAMS
3/8" (10mm) Threaded Rod (Supplied by others)
Cabinet Mounted U Channel
Rubber Vibration Isolater
Appendix A
B1600705 UNIT
Dry Contacts
Bolt to Floor
Wooden Curb (Supplied by others)
Space must be left to allow connection of drain lines with adequate slope for drainage
11
Appendix B
UNIT DIMENSIONS
B-1: B6LC (WITHOUT RECIRCULATION MODULE)
NOTES:
Center of gravity
Direction of airflow
B
Kg
LB.
B6LC ERV HM CORE
PTS
Kg
LB.
PTS
Kg
LB.
B6LC POLY CORE B6LC ALUMINUM CORE
PTS
18.88
40.80
A
20.00
44.21
A
17.45
38.49
A
12.27
26.52
B
13.00
28.67
B
11. 32
24.96
B
25.12
54.30
C
26.72
58.92
C
23.26
51.29
C
16.33
35.31
D
17.30
38.21
D
15.08
33.26
D
72.60
156.96
TOTAL
77.11
170.00
TOTAL
67.13
148.00
TOTAL
3/4" NPT
CONNECTION SIZES
CONNECTION TABLE
14 Gauge wire nut
Condensate drain fitting (2 x)
A
B
D
6.500"
14.000"
23.500"
2.750"
LOCATION
STRAP MOUNTING
8.000"
OPENING
OUTDOOR AIR
24.500"
OUTDOOR AIR
8.000"
OPENING
RETURN AIR
4.000"
RETURN AIR
14.103"
RIGHT SIDE
7.705"
DRAIN LINE FITTING
5.125"
A
12.005"
REVERSED DOOR OPTION
TOP
13.375"
C
34.000"
A
5.859"
28.005"
LINE POWER
14.000"
EXHAUST AIR
EXHAUST AIR
4.028"
OPENING
SUPPLY AIR
LOW VOLTAGE
TERMINAL STRIPS
OPENING
SUPPLY AIR
CONTROL BOX
19.207"
NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION,
INTERIOR COMPONENTS WILL APPEAR AS A MIRROR
IMAGE OF THE ABOVE DIAGRAM.
ACCESS
10.005"
B
FRONT
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.
ACCESS DOOR
LEFT SIDE
A MINIMUM OF 12.000" CLEARANCE FROM ANY OBSTRUCTION
IS REQUIRED FOR REMOVAL OF CONTROL BOX.
8.000"
4.000"
8.000"
3.535"
REVERSE DOOR
OPTION
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.
CONTROL PLATE
4.000"
15.000"
CORE
12.000"
VK0108A
12
Appendix B (cont’d)
UNIT DIMENSIONS
B-2: B6LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)
Kg
LB.
206 95
B6LC ERV HM CORE
PTS
with recirculation module
TOTAL
Kg
LB.
231 105
14.00" 7.10"
B6LC ALUMINUM CORE
with recirculation module
PTS
TOTAL
Kg
90
LB.
197
B6LC POLY CORE
PTS
with recirculation module
TOTAL
Location
Strap Mounting
49.550"
8.00"
Fresh Air
From Outside
4.00"
8.00"
Exhaust Air
From Building
1.75"
14.10"
Access Door
5.125"
Drain Fitting
Reversed Door Option
15.00"
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.
Core
28.12"
14.00"
4.00"
2.75"
1.75"
Access Door
19.207"
NOTE:
For units with the reversed door option, interior components will appear
as a mirror image of the above diagram.
Exhaust Air
to Outdoors
8.00"
Dry Contacts
4.00"
24.50"
Fresh Air
8.00"
to Building
3.53"
Control Box
Reverse Door Option
A minimum of 12.00" clearance from any obstruction
is required for removal of control box.
12.00"
Control Plate
VK0109A
Line Power
13
Kg
26.84
19.35
26.88
19.34
Appendix B (cont’d)
UNIT DIMENSIONS
B-3: 12LC (WITHOUT RECIRCULATION MODULE)
92.41
NOTES:
Center of gravity
LB.
57.84
A
B12LC ERV HM CORE
PTS
Kg
27.40
LB.
60.41
A
PTS
B12LC ALUMINUM CORE
Kg
24.50
LB.
54.02
Direction of airflow
B12LC POLY CORE
A
PTS
B
41.68
B
19.77
43.59
B
17.68
38.98
B
57.92
C
27.40
60.41
C
24.50
54.02
C
41.68
D
19.77
43.59
D
17.68
38.98
D
199.00
TOTAL
94.34
208.00
TOTAL
84.36
186.00
TOTAL
3/4" NPT
CONNECTION SIZES
CONNECTION TABLE
14 GAUGE WIRE NUT
CONDENSATE DRAIN FITTING (2X)
A
B
24.500"
EXHAUST AIR
FROM OUTDOORS
4.000"
8.000"
20.000"
RIGHT SIDE
FROM BUILDING
DRAIN FITTING
REVERSED DOOR OPTION
ACCESS DOOR
15.000"
RETURN AIR
9.878"
20.000"
11.000"
STRAP MOUNT
LOCATION
8.000"
FRESH AIR
2.750"
OUTDOOR AIR
D
5.125"
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
A MINIMUM OF 12.000" CLEARANCE FROM ANY OBSTRUCTION
IS REQUIRED FOR REMOVAL OF CONTROL BOX.
ACCESS DOOR
12.000"
CONTROL COVER
34.000"
TOP
CONTROL BOX
TERMINAL STRIPS
FRESH AIR
TO BUILDING
19.207"
ACCESS
11.325"
14.250"
A
20.620"
C
4.028"
EXHAUST AIR
TO OUTDOORS
SUPPLY AIR
LOW VOLTAGE
41.206"
5.715"
40.326"
EXHAUST AIR
LINE POWER
A
20.000"
FRONT VIEW
NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION,
INTERIOR COMPONENTS WILL APPEAR AS A MIRROR
IMAGE OF THE ABOVE DIAGRAM.
B
LEFT SIDE
10.000"
8.000"
4.000"
OPTION
REVERSE DOOR
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.
VK0110A
14
Appendix B (cont’d)
UNIT DIMENSIONS
B-4: B12LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)
Kg
LB.
269 122
B12LC ERV HM CORE
PTS
with recirculation module
TOTAL
Kg
LB.
269 122
B12LC ALUMINUM CORE
with recirculation module
PTS
TOTAL
Kg
112
LB.
247
B12LC POLY CORE
PTS
with recirculation module
TOTAL
10.000"
20.000"
Strap Mounting
Location
8.00"
Fresh Air
From Outdoor
4.00"
8.00"
Exhaust Air
From Building
1.75"
20.000"
Drain Fitting
Access Door
Reversed Door Option
41.24"
49.550"
2.75"
Line Power
Dry Contacts
To Outside
Exhaust Air
Fresh Air
To Building
5.125"
19.207"
Control Box
NOTE:
For units with the reversed door option, interior components
will appear as a mirror image of the above diagram.
A minimum of 15.00" clearance from any obstruction is required for removal
A minimum of 12.00" clearance from any obstruction
of heat recovery cores, fans, etc.
is required for removal of control box.
15.00"
The access door can be removed from cabinet with only 2.00" of clearance.
Core
Access Door
12.00"
10.00" 20.00"
1.75"
8.00"
4.00"
4.50"
8.00"
3.53"
Reversed Door Option
15
Control Cover
K0 111A
3/4" NPT
CONNECTION SIZES
Appendix B (cont’d)
UNIT DIMENSIONS
B-5: B1600705
1.875"
8.000"
10.750"
8.000"
7.500"
OPENING
EXHAUST AIR
A
2.157"
Line Voltage In
37.000"
EXHAUST
AIR
SUPPLY
Condensate drain fitting (2x)
B
47.000"
20.750"
DEFROST AIR
8.000"
2.000"
OPENING
CONNECTION TABLE
LB. Kg
32.74 14.85
68.46 31.05
35.20 15.97
NOTES:
Center of gravity
B1600705
Direction of airflow
PTS
A
B
10.000"
73.60 33.38
210.00
C
D
TOTAL 95.25
22.500"
14 gauge wire nut
A
TOP
AB
CD
OPENING
SUPPLY AIR
AIR
12.104"
10.605"
Low Voltage
Terminal Strips
24.736"
A minimum of 12.00" clearance from any
obstruction is required for power hook-up, low
31.080"
voltage remote connection, and control panel access.
51.000"
RIGHT SIDEFRONT
A minimum of 21.00" clearance from any obstruction
is required for removal of heat recovery cores, fans, etc.
21.000"
The access door can be removed from cabinet with only 2.00" of clearance.
HEAT RECOVERY CORE
ACCESS DOOR
14.000"
3.625"
2.000"
1.875"
3.750"
OUTDOOR AIR
AIR
OPENING
OUTDOOR
8.000"
2.000"
12.250"
16
40.500"
RETURN AIR
OPENING
RETURN AIR
8.000"
B
15.250"
CONDENSATE DRAIN
LEFT SIDE
VK0100A
Gravity Backdraft Damper (for recirculation defrost option only)
Exhaust Air to Outdoors
Fresh Air to Building
Balancing Damper
Appendix C
BALANCING DAMPERS POSITION
B6LC AND B12LC
Min.12" (305 mm)
Reverse Door Option
Min. 8" (203 mm)
(Optional) Canvas Vibration Isolator
Fresh Air From Outdoors
VJ0123A
B1600705
Balancing Damper (not supplied)
Canvas Vibration Isolator
Dry Contacts
17
Appendix D
DRAIN CONNECTIONS
B6LC AND B12LC
Plastic drain fitting
Min. 3”
[76 mm]
Min. 1”
[25 mm]
NOTES:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum 1/4” per foot.
VO0002A
To drain
3/4” NPT
coupler
Min. 4”
[102 mm]
Water trap
Plastic hose
B1600705
Min. 3”
[76 mm]
Min. 1”
[25 mm]
Min. 4”
[102 mm]
Copper or plastic pipe
To drain
Min. 3”
[76 mm]
Min. 1”
[25 mm]
To drain
NOTES:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum 1/4” per foot.
VO0001A
3/4” NPT
coupler
Min. 4”
[102 mm]
Water trap
Plastic hose
Plastic drain fitting
Min. 3”
[76 mm]
Min. 1”
[25 mm]
18
Min. 4”
[102 mm]
Copper or plastic pipe
To drain
Appendix E
TERMINAL CONTROL DIAGRAMS
E-1: TERMINAL LABEL
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 field 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 VO LTAGE 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.
E-2: WALL CONTROL CONNECTION
Two types of remote wall controls are available:
1. Slide Switch Wall Control with fan switch and dehumidistat control (for B6LC and 1B2LC units)
2. VT10W Wall Control with fan mode selection, dehumidistat control and high speed recirculation mode (for B1600705 unit).
The remote wall controls work with the microprocessor electronic control within the unit to control ventilation sequences. Each wall control has different features and require 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.
VE0002A
WALL CONTROL
Black
Red
OCCUPIED TIMER/ SENSOR
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts except wall control and 24VAC power supply.
Use of 24VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs.
Green
Yellow
LOW
COMMON
HIGH
19
JUMPER
VE0006A
WALL CONTROL
Black
Red
OCCUPIED TIMER/ SENSOR
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts except wall control and 24VAC power supply.
Use of 24VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs.
Green
Yellow
LOW
COMMON
HIGH
Wall
Control
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).
JUMPER
(factory installed)
WALL CONTROL
Black
Red
OCCUPIED TIMER/
JUMPER
SENSOR
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts except wall control and 24VAC power supply.
Use of 24VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs.
VE0314A
Green
Yellow
LOW
COMMON
HIGH
NSB Timer
1M2345
24 (-) VAC
24 (+) VAC
OCC. CONTROL
(field installed)
WALL CONTROL
Black
Red
OCCUPIED TIMER/ SENSOR
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts except wall control and 24VAC power supply.
Use of 24VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs.
Green
Yellow
LOW
COMMON
HIGH
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
sensor, light sensor, timer, building management system, etc.,
2
supplied by others.
The illustration below represents a switch connected to the unit.
JUMPER
VE0005A
WALL CONTROL
Black
Red
OCCUPIED TIMER/ SENSOR
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts except wall control and 24VAC power supply.
Use of 24VAC circuit requires isolating contacts (ex. thermostat) to prevent interconnection of Class 2 outputs.
LOW
COMMON
HIGH
Green
Yellow
FAN
REMOTE
SWITCH
LOW HIGH
Appendix F
CONTROL BOX ASSEMBLY B6LC AND B12LC
Remote control access plate
Remote wiring terminal block Control box
Unit cabinet
Control cover plate
VE0001A
20
Appendix G
MAKE-UP HEAT REQUIREMENTS
B6LC AND B1600705
Although the B6LC, B1600705 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.
Outdoor Air -40°F Outdoor Air -22°F Outdoor Air -4°F Outdoor Air 14°F Outdoor Air 32°F
kW kW kW kW kW kW kW kW kW kW kW kW kW kW kW
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
Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air Temperature
Air
(L/s)
Supply
UNITS
B1600705
B6LC and
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
Air
700 330 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
650 307 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
600 283 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
550 259 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
500 236 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
450 212 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
(CFM)
Supply
400 189 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
21
Appendix G
MAKE-UP HEAT REQUIREMENTS
B12LC
Although the B6LC, B1600705 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.
Outdoor Air -40°F Outdoor Air -22°F Outdoor Air -4°F Outdoor Air 14°F Outdoor Air 32°F
kW kW kW kW kW kW kW kW kW kW kW kW kW kW kW
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
Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air Temperature Desired Air Temperature
Air
(L/s)
Supply
B12LC UNIT
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
Air
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
(CFM)
Supply
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
1150 542 12.6 17.4 19.3 9.6 14.5 16.4 6.6 11.5 13.4 3.6 8.5 10.4 0.7 5.5 7.4
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
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
22
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
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
VE0362A
EXT.
BK
1 1
W
2 2
GL1004
G
from 1030 CORE DAMPER
from 1022 EXHAUST
from 1012 120 VAC
from 1002 INTAKE
B6LC & B12LC - Exhaust Defrost - Normal Low Speed
MAIN POWER PJ1001
BK
from 1013
NEUT
BK
BK
from 1022 EXHAUST
BK
BK
W
CR1026
4 2
HIGH SPEED
CR1029
COM NC DEFROST
CR1024
4 2
LOW SPEED
NOTE A
CR1026
8 6
HIGH
SPEED
CR1024
8 6
LOW
SPEED
NOTE A
to 1020, 2016 120 VAC
to 1002, 1021 NEUT
NOTE A: THE MEDIUM SPEED WIRES MAY OPTIONNALLY REPLACE THE LOW SPEED (RED) WIRES RUNNING FROM RELAY LOW SPEED.
FIELD WIRING (USE COPPER CONDUCTORS ONLY) UNIT ASSEMBLY (NOT ON CONTROL PANEL)
TB2002
BK
BLACK
PJ2003 PJ2003
R
2 2
GN
GN
BL
BL
4 4
6 6
5 5
BK/R
W/R
BK
W
PJ2003
PJ2003
PJ2003
to 1027 TRANSMIT
to 1028 RECEIVE
to 1022 REMOTE FAN
to 1021 INTERLOCK
2 2 2 2
1 1 1 1
PJ2016 PJ2016A
2 2 2 2
1 1 1 1
RED
OCC.
UNOCC.
REM FAN
INTERLOC
PJ1001A
BK/Y
BK/Y
4 4 4 4
W
R
BL
BK/Y
W/R
R
BL
PJ2013 PJ2013A
W
1 1 1 1
to 2017 INTAKE
R
2 2 2 2
BL BL
3 3 3 3
PJ1007
BK/Y
4 4 4 4
W/R
1 1 1 1
R
2 2 2 2
BL BL
3 3 3 3
3 3
to 1026 12 VDC
PJ2003
1 1
to 1029 LOGIC GND
Appendix H
WIRING DIAGRAMS
BK
CAP1001 5 µF
BK
BK
BN
BN
HIGH
MOT1002
COM
SUPPLY
GND
LOW
BLOWER
MED
GN
BK
CAP1007 5 µF
BK
BK
BN
BN
HIGH
MOT1008
COM
EXHAUST
GND
LOW
BLOWER
MED
GN
ACT2013 CORE ACTUATOR
ACT2016 INTAKE ACTUATOR
JUMPER SETTINGS
FOR CONTROL BOARD
JU1 JU1 JU1 JU1 JU1 JU1 JU1
A B C D E F G
R2004
3.9 K
PJ1001B
W
R
PJ1007A
W
R
TB2002A
GN
Y
BK
GREEN
YELLOW
LOW
COM
HIGH
2
1
2
1
23
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
from 2008
INTERLOCK
from 2007
REMOTE FAN
from 2003
12 VDC
from 2003
TRANSMIT
from 2005
RECEIVE
from 2007
LOGIC GND
THERMISTOR
BK BK/R BK/Y BL BN GN O
TAG S CR1029 CR1024 CR1026 UCB1021
OFF OFF OFF ON ON ON ON
DEFROST
10K OHMS
BL
BL
Y
R
GN
BK
SN1030
BL
BK
1
BL
BK
2
COLOR CODE
BLACK BLACK/RED BLACK/YELLOW BLUE BROWN GREEN ORANGE
CONTROL BOX BOM
QTY.
DESCRIPTION
ELAY SPDT 120 VAC 1 HP 30 A @ 120 VAC
1
R
R
2
ELAY DPST 120 VAC 1 HP 30 A @ 120 VAC
1
PC BOARD
CONTROL
BOARD
UCB1021
F
F
I
OC
J3
OL
Y
R
G
B
1
J4
2
COM
J1
N/O
J2
N/C
1
2
3
4
5
6
7
8
9
R W W/BL W/R W/Y Y
from 1012 120 VAC
BK
W
W/R
CR1024
R
0 1
W/Y
CR1026
O
0 1
W/BL
CR1029
BK/R
to 2013 CORE DAMPER
RED WHITE WHITE/BLUE WHITE/RED WHITE/YELLOW YELLOW
from 1013 NEUT
to 1008, 2014 EXHAUST
LOW SPEED NO 1003, 1009 NC
HIGH SPEED NO 1001, 1007 NC
DEFROST NO NC 1002
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
VE0364A
EXT.
BK
W
GL1004
G
1 1
2 2
B6LC & B12LC - Recirculation Defrost - Normal Low Speed
PJ1027
CR1026
4 2
HIGH SPEED
NEUT
CR1024
4 2
LOW SPEED
CR1026
8 6
HIGH SPEED
CR1029
COM NC
DEFROST
CR1024
8 6
LOW
SPEED
to 1027 TRANSMIT
to 1028 RECEIVE
to 1022 REMOTE FAN
to 1021 INTERLOCK
BL
NOTE A
BL
NOTE A
PJ1027
5 5
to 1020 120 VAC
to 1002, 1021 NEUT
BK/Y
2 2
PJ1001A
BK/Y
4 4 4 4
W
1 1 1 1
R
2 2 2 2
3 3 3 3
BK/Y
4 4 4 4
W/R
1 1 1 1
R
2 2 2 2
3 3 3 3
BK
to 1026 12 VDC
to 2029 SUPPLY ON
PJ1001B
BK/Y
WW
BL
PJ1007
BK/Y
PJ1007A
W/R
R
BL BL
to 2026 ADDER 120 VAC
3 3
R2004
3.9 K
PJ2003
1 1
to 1029 LOGIC GND
MAIN POWER PJ1001
BK
BK
from 1013
BK R R
BK
from 1022 EXHAUST
BK
BK
BK
W
NOTE A: THE MEDIUM SPEED WIRES MAY OPTIONNALLY REPLACE THE LOW SPEED (RED) WIRES RUNNING FROM RELAY LOW SPEED.
FIELD WIRING (USE COPPER CONDUCTORS ONLY) UNIT ASSEMBLY (NOT ON CONTROL PANEL)
TB2002
BK
BLACK
PJ2003 PJ2003
R
2 2
RED
GN
OCC.
PJ2003
GN
4 4
UNOCC.
PJ2003
BL
6 6
REM FAN
INTERLOC
PJ2003
BL
5 5
Appendix H (cont’d)
WIRING DIAGRAMS
BK
BL
R
TB2002A
GN
Y
BK
W
YELLOW
GREEN
COM
HIGH
CAP1001 5 µF
BK
BK
BN
BN
HIGH
COM
GND
LOW
MED
GN/Y
BK
CAP1007 5 µF
BK
BK
BN
BN
HIGH
COM
GND
LOW
MED
GN/Y
LOW
MOT1002 SUPPLY BLOWER
GN
MOT1008 EXHAUST BLOWER
GN
1020
1021
from 2008
INTERLOCK
1022
from 2007
REMOTE FAN
1023
1024
1025
1026
from 2003
1027
from 2003
TRANSMIT
1028
from 2005
RECEIVE
1029
from 2007
LOGIC GND
1030
1031
1032
1033
BK BK/R BK/Y BL BN GN GN/Y
2020
2021
2022
from 1030
DEFROST SIGNAL
2023
2024
2025
from 1027
ADDER COMMON
2026
from 1011
ADDER 120 VAC
2027
2028
2029
from 1000
SUPPLY ON
2030
2031
from 1024
LOW LOCKOUT
2032
LOW LOCKOUT
2033
12 VDC
DEFROST
THERMISTOR
10K OHMS
BK/R
3 3
1 1
W/BL
4 4
5 5
6 6
BK/Y
2 2
1 1
2 2
to 1023
BL
BL
Y
R
GN
BK
SN1030
1
2
BLACK BLACK/RED BLACK/YELLOW BLUE BROWN GREEN GREEN/YELLOW
PJ2026
PJ2031
BK
BL
BL
BK
BK/R
W/BL
W/BL
FU2026
BK
BK
CR2028
5 3
UNOCCUPIED
HIGH
BK/Y
CR2028
R
6 2
UNOCCUPIED
HIGH
R
CONTROL
BOARD
UCB1021
F
F
I
OC
J3
OL
Y
R
G
B
1
J4
2
COLOR CODE
CR2022
W/BL
BK
XF2025
40 VA
H2
BK
H1
0.25 CONTROLS
TRANSFORMER
from 1012 120 VAC
BK
PJ1024
R
2 2
from 2031
LOW LOCKOUT
J1
N/O
J2
COM
1
2
3
4
5
6
7
8
9
N/C
O R W W/BL W/R W/Y Y
RECIRC DAMPER BOX
DEFROST 2 NO 2033 NC 2032
W/BL
R
X2X1
W
CR2022
R
COM NC DEFROST 2
CR2022
R
COM NO
DEFROST 2
W
W/R
R
CR1024
PJ1024
R
1 1
R
0 1
W/Y
CR1026
O
0 1
W/BL
4 4
PJ1027
W/BL
CR1029
BK/R
BK/R
3 3
PJ1027
ORANGE RED WHITE WHITE/BLUE WHITE/RED WHITE/YELLOW YELLOW
TB2023
W
C
R
R
BL
G
CR2028
BL
7 8
W
ACT2031
1
R
NOTE: REVERSE DOOR
2
ACCESS, SWAP WIRES ON TERMINALS 2
O
3
AND 3.
from 1013 NEUT
to 1008 EXHAUST
to 2032 LOW LOCKOUT
LOW SPEED NO 1003, 1009 NC
HIGH SPEED NO 1001, 1007 NC
W/Y
to 2025 ADDER COMMON
DEFROST NO NC 1008
to 2022 DEFROST SIGNAL
W
UNOCCUPIED HIGH NO 2028 NC 2031
24
Appendix H (cont’d)
WIRING DIAGRAMS
B6LC & B12LC - Recirculation Defrost - Normal Low Speed (cont’d)
UNIT CONTROL BOX ADDER CONTROL BOX
VE0365A
JUMPER SETTINGS
FOR CONTROL BOARD
JU1 JU1 JU1 JU1 JU1 JU1 JU1
A B C D E F G
OFF OFF OFF ON ON ON ON
NOTE: Written numbers on CR2028 relay may differ from the ones shown, but the relay orientation must be the same as illustrated.
TA GS CR1029 CR2022 CR1024 CR1026 CR2028 FU2026 UCB1021 XF2025
CONTROL BOX BOM
QTY.
DESCRIPTION
ELAY SPDT 120 VAC 1 HP 30 A @ 120 VAC
2
R
RELAY DPST 120 VAC 1 HP 30 A @ 120 VAC
2
R
1
ELAY DPDT 24 VAC 1/2 HP 15 A @ 120 VAC
USE 0.25 A AND FUSE HOLDER MINI
1
F
1
PC BOARD TRANSFORMER
1
25
Appendix H (cont’d)
WIRING DIAGRAMS
B1600705 - Recirculation Defrost
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
USE COPPER CONDUCTORS ONLY
SPLITTER BLOCK
TB1001
L1
L1
LINE SIDE
N
LOAD SIDE
GDNGD
BK
BK
to 1020, 2023 120 VAC
W
to 1022, 2024 NEUT
GN
from 1024
LOW SPEED
from 1021
EXHAUST COM
from 1026
HIGH SPEED
LOW SPEED
SUPPLY LOW
HIGH SPEED
R
W/BL
BK/Y
from 1024
from 1025
from 1026
PJ1007
CR1029
9 1
DEFROST 1
CR1029
12 4
DEFROST 1
GN
W/Y
BK/Y
1 1
2 2
3 3
4 4
R
GN
R
W/BL
BK/Y
GN
PJ1001
1 1
2 2
3 3
4 4
PJ1007A
1 1
2 2
3 3
4 4
W
BK
GN/Y
R
W/BL
BK/Y
GN/Y
BN/W
LOW
COM
HIGH
BK
R
BN/W
LOW
COM
HIGH
FIELD WIRING UNIT ASSEMBLY (NOT ON CONTROL PANEL)
GND
GND
CAP1001 5 µF
BK
BN
MOT1002 SUPPLY BLOWER
CAP1007 5 µF
BK
BN
MOT1008 EXHAUST BLOWER
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
from 2008
INTERLOCK
from 2007
REMOTE FAN
from 2003
12 VDC
from 2003
TRANSMIT
from 2005
RECEIVE
from 2007
LOGIC GND
THERMISTOR
DEFROST
10K OHMS
BK BK/R BK/Y BL BN/W GN GN/Y
BL
BL
Y
R
GN
BK
SN1030
BK
BL
1
BL
BK
2
BLACK BLACK/RED BLACK/YELLOW BLUE BROWN/WHITE GREEN GREEN/YELLOW
CONTROL
BOARD
UCB1021
1
F
2
F
3
I
OC
4
J3
5
OL
J1
Y
6
7
R
8
G
9
B
1
N/O
J4
2
N/C
J2
COM
COLOR CODE
O R W W/BL W/R W/Y Y
from 1001 120 VAC
BK
W
R
W/Y
BK/Y
W/R
BK/R
W/BL
to 1008 EXHAUST COM
from 1002 NEUT
to 1001, 1007 LOW SPEED
to 1002 SUPPLY COM
to 1003, 1009 HIGH SPEED
CR1029
13 14
DEFROST 1 NO
CR1030
NC 1008, 1009
13 14
DEFROST 2 NO 2023 NC 2024
ORANGE RED WHITE WHITE/BLUE WHITE/RED WHITE/YELLOW YELLOW
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
VE0368A
TB2002
BLACK
RED
OCC.
UNOCC.
REM FAN
INTERLOC
BK
R
GN
GN
BL
BL
to 1027 TRANSMIT
to 1028 RECEIVE
to 1022 REMOTE FAN
to 1021 INTERLOCK
to 1026 12 VDC
R2004
3.9 K
to 1029 LOGIC GND
TB2002A
GN
Y
BK
GN
BK
GREEN
YELLOW
LOW
COM
HIGH
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
from 1001
120 VAC
from 1002
NEUT
FU2023
BK BK
0.5
WBK
TRANSFORMER
XF2024
40 VA
H2
H1
CONTROLS
CR1030
BL
BL
BL
9 5
DEFROST 2
CR1030
9 1
DEFROST 2
X2X1
O
BK/R
W/R
3 3
2 2
1 1
PJ2023A
O
BK/R
W/R
3
ACT2023 SUPPLY DAMPER
2
1
26
Appendix H (cont’d)
WIRING DIAGRAMS
B1600705 - Recirculation Defrost (cont’d)
CONTROL BOX BOM
1
4
1
5
8
9
12
13
14
4
5
8
9
12
13
14
TAG S CR1029 CR1030
FU2023
UCB1021 XF2024 R2004 SN1030 TB1001
NOTE: Written numbers on CR1029 and CR1030 relays may differ from the ones shown, but the orientation of the relays must be the same as illustrated.
QTY.
DESCRIPTION RELAY DPDT 120 VAC 1/2 HP
2
15 A @ 120 VAC
USE 0.5 A AND FUSE HOLDER
F
1
FLUSH
PC BOARD
1 1
TRANSFORMER
1
RESISTOR 3.9K
HERMISTOR 10K OHMS
1
T SPLITTER BLOCK
1
JUMPER SETTINGS
FOR CONTROL BOARD
JU1 JU1 JU1 JU1 JU1 JU1 JU1
A B C D E F
G
MOUNT
ON OFF OFF ON ON ON ON
VE0369A
Appendix I
TROUBLESHOOTING
SYMPTOMS POSSIBLE CAUSES SOLUTIONS
Inside air is too dry Over ventilation - speed setting too high
Dehumidistat setting is too low
Persistent condensation on windows, walls, ceilings, etc.
Improper adjustment of dehumidistat control Improper ventilation rate Window frame is too cold or leaky
Unit stops functioning Electrical supply interrupted Check the unit circuit breaker
Air from supply diffusers too cold Imbalance of supply and exhaust air
Outdoor temperature very cold
Unit makes annoying noise Blower wheel out of alignment Remove the motor/blower assembly
Core freezing up Imbalance of supply and exhaust air
Defrost damper not functioning
Adjust speed setting Set dehumidistat control in a higher position (if applicable)
Adjust dehumidistat control knob to a lower setting Install a dehumidistat (option) Repair window frame
Check filters and cores for blockage Check balance of airflows Install electric duct heater if necessary
and adjust blower wheel
Check filters and cores for blockage Check balance of airflows Check for operation of both defrost damper actuators
For technical assistance and warranty information,
please call your local supplier.
27
Appendix I
TROUBLESHOOTING
SYMPTOMS POSSIBLE CAUSES SOLUTIONS
Inside air is too dry Over ventilation - speed setting too high
Dehumidistat setting is too low
Persistent condensation on windows, walls, ceilings, etc.
Unit stops functioning Electrical supply interrupted Check the unit circuit breaker
Air from supply diffusers too cold Imbalance of supply and exhaust air
Unit makes annoying noise Blower wheel out of alignment Remove the motor/blower assembly
Core freezing up Imbalance of supply and exhaust air
Improper adjustment of dehumidistat control Improper ventilation rate Window frame is too cold or leaky
Outdoor temperature very cold
Defrost damper not functioning
For technical assistance and warranty information,
please call your local supplier.
Adjust speed setting Set dehumidistat control in a higher position (if applicable)
Adjust dehumidistat control knob to a lower setting Install a dehumidistat (option) Repair window frame
Check filters and cores for blockage Check balance of airflows Install electric duct heater if necessary
and adjust blower wheel
Check filters and cores for blockage Check balance of airflows Check for operation of both defrost damper actuators
28
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