Venmar 6LC Manual

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.
VB0002 VB0003
207428 rev. 16
6LC, V6LC 7000
VB0001
12LC, V12LC
REGISTER YOUR PRODUCT ONLINE AT:
www.venmar.ca/register-your-product.html or
www.vanee.ca/en/register-your-product.html
For additional information, visit www.venmar.ca or www.vanee.ca

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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12
7.1 6LC, V6LC-12LC, V12LC Exhaust Defrost. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.2 6LC, V6LC-12LC, V12LC Recirculation Defrost. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.3 7000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Appendix A - Mounting Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Appendix B - Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-18
Appendix C - Balancing Dampers Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Appendix D - Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Appendix E - Terminal Control Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22
Appendix F - Control Box Assembly 6LC, V6LC, 12LC and V12LC . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Appendix G - Make-up Heat Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Appendix H - Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-29
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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Please take note that this manual uses the following symbols to emphasize particular information:
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 fire-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°C (65°F).
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.
WARNING
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.
!

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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.
2.3 Mounting Options
NOTE: On 6LC, V6LC, 12LC and V12LC units, remove and discard the metal plate screwed on the unit to prevent the door from opening
during transport.
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
6LC, V6LC, 7000 14” x 8” (356 mm x 203 mm)
12LC, V12LC 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.
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.
VD0523
Metal plate
Metal plate
Left side, standard door Right side, reversed door

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2. Installation (cont’d)
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 6LC, V6LC, 12LC and V12LC 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.
All ports on the 7000 unit have 2” (51 mm) 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. (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 osmooth 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 (0.09 m).
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)
couplerwhileit isattachedtotheplasticdrainfitting asdeformationmayoccur.Ensureadequateslope ispresenttoallowgood 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:
6LC, V6LC 7000 12LC, V12LC
VOLTAGE 120 V 120 V 120 V
MCA 9.50 A 6.63 A 14.30 A
MOP 15.00 A 15.00 A 20.00 A

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3. Controls
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 (6LC, V6LC /12LC, V12LC 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 7000 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 6LC,
V6LC, 12LC and V12LC 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 6LC, V6LC, 12LC and
V12LC 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 6LC, V6LC, 12LC and V12LC 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.
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 - 6LC, V6LC, 12LC and V12LC units only). 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.
RECIRCULATION DEFROST MODULE (OPTIONAL - FACTORY INSTALLED)
The Recirculation Defrost Module is only available with the 6LC, V6LC, 12LC and V12LC units.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 6LC, V6LC, 12LC and V12LC 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.
POOL ELECTRONIC TYPE (FOR 7000 UNIT ONLY)
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.
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.

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5. Maintenance
5.1 Bi-Monthly Maintenance
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.
6LC, V6LC, 12LC and V12LC units 7000 unit
Washable foam filters Washable foam filters
MEF filter - optional 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.
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.
1
1
2
VL0001
1 or 2
1
VL0002A
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.

8
5. Maintenance (cont’d)
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.
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.
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.
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.
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
easely 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.
6. Service
6.1 Parts Replacement
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, V6LC/12LC, V12LC 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.
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.

9
6. Service (cont’d)
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.
CAPACITOR
LOCKING PLATE
REMOVE THESE
TWO SCREWS
VD0004A
SERVICE CONNECTOR
THUMBSCREW
VD0001A
6LC, V6LC, 12LC and V12LC units 7000 unit
6.2 Troubleshooting
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 ap-
plicable).
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. Imbalance of supply and exhaust air.
Outdoor temperature very cold.
Check filters and cores for blockage.
Check balance of airflows.
Install electric duct heater if necessary.
Unit makes annoying noise. Blower wheel 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 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.
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.

10
7. Service parts
7.1 6LC, V6LC-12LC, V12LC Exhaust Defrost
B
C D E
F
G
H
I
JK
M
L
N
VL0068
Ref. Part No. Description
B13036 Hinge kit (male-female)
C
1808139 Core Defrost Actuator 6LC, V6LC-12LC, V12LC
63341 Core Defrost Actuator 12LC, V12LC, Powder
Coated
D
63327 Core Damper 6LC, V6LC
63328 Core Damper 12LC, V12LC
63329 Core Damper 12LC, V12LC, Powder Coated
E
201982 Fresh Air Damper 6LC, V6LC
63330 Fresh Air Damper 12LC, V12LC
63331 Fresh Air Damper 12LC, V12LC Powder
Coated
F
1808138 Fresh Air Damper Act. 6LC, V6LC-12LC, V12LC
63332 Fresh Air Damper Actuator 12LC, V12LC
Powder Coated
G201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
H
1808147 Core Poly CSA 6LC, V6LC-12LC, V12LC (unitary)
1808146 Core Poly UL 6LC, V6LC-12LC, V12LC U.S.
only (unitary)
1604191 CoreAluminum 6LC, V6LC-12LC, V12LC (unitary)
1607787 ERV HM Core 6LC, V6LC-12LC, V12LC (unitary)
I16035 Door Latch-Keeper Kit
J1607456 Drain Fitting 6LC,V6LC, 12LC,V12LC, 7000 (unitary)
K63342 Optional MERV8 Filter for 6LC, V6LC, 12LC,
V12LC (unitary)
Ref. Part No. Description
L *
1808130 PCB Electronic 6LC, V6LC, 12LC, V12LC, 7000
202382 Thermistor 6LC, V6LC, 12LC, V12LC, 7000
500025914 Relay SPDT 120 VAC, 1 HP,
30 A @ 120 VAC, 6LC, V6LC, 12LC, V12LC
500025915 Relay DPST 120 VAC, 1 HP,
30 A @ 120 VAC, 6LC, V6LC, 12LC, V12LC
M
1808144 Blower Ass’y 6LC, V6LC
1808148 Blower Ass’y 12LC, V12LC
1808148P BlowerAss’y 12LC,V12LC Powder Coated Option
1808142 BlowerWheel 6LC,V6LC, 12LC,V12LC (not shown)
1808149 Fan Motor 6LC, V6LC (not shown)
1808150 Fan Motor 12LC, V12LC (not shown)
63110 Capacitor 5 F LC, 7000 (not shown)
N208507 Terminal Strip 10-Pin Molex 38721-6710,
6LC, V6LC, 12LC, V12LC
* 202798 Door Assembly 6LC, V6LC, 12LC, V12LC
* 63343 Door Assembly 12LC , V12LC
(Powder Coated Option)
* 1808145 Accessories kit 6LC, V6LC, 12LC, V12LC
* 63344 Hanger Strap 18" Kit 6LC,V6LC,12LC,V12LC, 7000
* Not Shown.
NOTE 1:C and D not available for ERV HM Core
NOTE 2:H 2 cores required for 6LC and V6LC units
3 cores required for 12LC and V12LC units
NOTE 3:G 4 filters for 6LC and V6LC units
6 filters for 12LC and V12LC units
NOTE 4:K 2 filters for 6LC and V6LC units
3 filters for 12LC and V12LC units

11
7. Service parts (cont’d)
7.2 6LC, V6LC-12LC, V12LC Recirculation Defrost
B
C
D
DE F
G
I
J
H
K
L
M
VL0069
Ref. Part No. Description
B13036 Hinge kit (male-female)
C
1808147 Core Poly CSA 6LC, V6LC-12LC, V12LC (unitary)
1808146 Core Poly UL 6LC, V6LC-12LC, V12LC U.S.
only (unitary)
1604191 CoreAluminum 6LC, V6LC-12LC, V12LC (unitary)
1607787 ERV HM Core 6LC, V6LC-12LC, V12LC (unitary)
D201805 Filter SWF 13.125" x 11.25" x 1" (unitary)
E
63333 Recirculation Damper 6LC, V6LC
63334 Recirculation Damper 12LC, V12LC
63335 Recirculation Damper 12LC, V12LC Powder
Coated
F225855 Damper Motor Belimo LMB24-3-T, 7000,
6LC, V6LC-12LC, V12LC (Recirc. Defrost Option)
G *
201603 Terminal Strip 3-Pin Molex 38721-6703 6LC,
V6LC, 12LC, V12LC (Recirculation Defrost)
63352 Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC,
6LC, V6LC, 12LC,V12LC (Recir. Defrost Option)
500025914 Relay SPDT 120 VAC, 1 HP,
30 A @ 120 VAC, 6LC, V6LC, 12LC, V12LC
64098 Transformer 120-24V 40VA
H16035 Door Latch-Keeper Kit
I1607456 Drain Fitting 6LC, V6LC, 12LC, V12LC, 7000
(unitary)
J63342 Optional MERV8 Filter for 6LC, V6LC, 12LC,
V12LC (unitary)
Ref. Part No. Description
K *
1808130 PCB Electronic 6LC, V6LC, 12LC, V12LC, 7000
202382 Thermistor 6LC, V6LC, 12LC, V12LC, 7000
500025914 Relay SPDT 120 VAC, 1 HP,
30 A @ 120 VAC, 6LC, V6LC, 12LC, V12LC
500025915 Relay DPST 120 VAC, 1 HP,
30 A @ 120 VAC, 6LC, V6LC, 12LC, V12LC
L
1808144 Blower Ass’y 6LC, V6LC
1808148 Blower Ass’y 12LC, V12LC
1808148P Blower Ass’y 12LC, V12LC Powder Coated
Option
1808142 Blower Wheel 6LC, V6LC, 12LC, V12LC (not
shown)
1808149 Fan Motor 6LC, V6LC (not shown)
1808150 Fan Motor 12LC, V12LC (not shown)
63110 Capacitor 5 μF LC, 7000 (not shown)
M208507 Terminal Strip 10-Pin Molex 38721-6710,
6LC, V6LC, 12LC, V12LC
* 202798 Door Assembly 6LC, V6LC, 12LC, V12LC
* 63343 Door Assembly 12LC, V12LC
(Powder Coated Option)
* 1808145 Accessories kit 6LC, V6LC, 12LC, V12LC
* 63344 Hanger Strap 18" Kit 6LC,V6LC, 12LC,V12LC, 7000
* 64228 Backdraft damper 6LC, V6LC recirculation
* 64229 Backdraft damper 12LC, V12LC recirculation
* Not Shown.
NOTE 1:C 2 cores required for 6LC and V6LC units
3 cores required for 12LC and V12LC units
NOTE 2:D 4 filters for 6LC and V6LC units
6 filters for 12LC and V12LC units
NOTE 3:J 2 filters for 6LC and V6LC units
3 filters for 12LC and V12LC units
* Not Shown.

12
7. Service parts (cont’d)
7.3 7000
B
DC
E
F
G
H
JI
K
VL0070
L
Ref. Part No. Description
B16035 Door Latch-Keeper kit
C225855
Damper Motor Belimo LMB24-3-T, 7000,
6LC, V6LC-12LC, V12LC (Recirculation
Defrost Option)
D1604178 Fresh Air Damper
E
1604168 Blower Ass’y 7000
1604177 Blower Wheel (not shown)
1604169 Fan Motor 7000 (not shown)
63110 Capacitor 5 μF LC, 7000 (not shown)
F202790 Terminal Strip 7-Pin Molex 38721-6707,
7000
G *
1808130 PCB Electronic 6LC, V6LC, 12LC, V12LC, 7000
202382 Thermistor 6LC, V6LC, 12LC, V12LC, 7000
63117 Transformer 7000
63345 RelayDPDT120VAC,1/2HP,15A@120VAC,
7000, 6LC, V6LC, 12LC, V12LC
SV63117B Relay DPST 120 VAC, 1 HP,
30 A @120VAC, 7000
* Not Shown.
Ref. Part No. Description
H13036 Hinge Kit (male-female)
I1604156 Core Poly CSA 7000
1604190 Core Poly UL 7000 U.S. only
J1607456 Drain Fitting 6LC, V6LC, 12LC, V12LC,
7000 (unitary)
K134147 Filter SWF 18.6" x 15.6" x 1" 7000 Exhaust
(unitary)
L134145 Filter SWF 19" x 22.75" x 1" 7000 Supply
(unitary)
* 1608701 Optional MERV 7 Filter, 7000 Supply
(unitary)
* 1804103P Door Ass’y 7000 (Powder Coated option)
* 027123 Anti-vibration Bushing 7000 (unitary)
* 63344 Hanger Strap 18" Kit 6LC, V6LC, 12LC,
V12LC, 7000

13
Appendix A
MOUNTING DIAGRAMS
6LC, V6LC, 12LC AND V12LC UNITS
Space must be left to allow connection
of drain lines with adequate slope for drainage
Wooden Curb (Supplied by others)
Bolt to Floor
Rubber Vibration Isolator
(Supplied by others)
U Channel
(Supplied by others)
3/8" (10mm)
Threaded Rod
(Supplied by others)
NOTE: Diagrams show standard unit configuration.
For units with the reversed door option, the
door will be located here.
Reinforced
Rubber Strap
VD0002A
Recirculation Module
(Factory Installed)
Recirculation Module
(Factory Installed)
Recirculation Module
(Factory Installed)
3/8" (10mm)
Threaded Rod
(Supplied by others)
Rubber Vibration
Isolater
Cabinet Mounted
U Channel
Wooden Curb
(Supplied by others)
Bolt to Floor
Space must be left to allow
connection of drain lines with
adequate slope for drainage
Dry
Contacts
Dry
Contacts
VD0003A
7000 UNIT

14
Appendix B
UNIT DIMENSIONS
B-1: 6LC AND V6LC (WITHOUT RECIRCULATION MODULE)
8.000"
[203]
4.000"
[102]
8.000"
[203]
3.535"
[90]
4.000"
[102]
28.005"
[711]
14.000"
[356]
5.859"
[149]
13.375"
[340]
23.500"
[597]
2.750"
[70]
14.000"
[356] 6.500"
[165]
8.000"
[203]
8.000"
[203]
14.103"
[358]
7.705"
[196]
4.000"
[102]
24.500"
[622]
12.005"
[305]
4.028"
[102]
34.000"
[864]
19.207"
[488]
5.125"
[130]
10.005"
[254]
12.000"
[305]
15.000"
[381]
EXHAUST AIR
OPENING
SUPPLY AIR
OPENING
LINE POWER
EXHAUST AIR OUTDOOR AIR
RETURN AIR
SUPPLY AIR
A
B
LOW VOLTAGE TERMINAL STRIPS
CONTROL BOX ACCESS
REVERSE DOOR
OPTION
LEFT SIDE
CD
B
A
TOP
NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION, INTERIOR COMPONENTS WILL APPEAR AS A MIRROR IMAGE OF THE ABOVE DIAGRAM.
FRONT
STRAP MOUNTING
LOCATION
OUTDOOR AIR
OPENING
RETURN AIR
OPENING
DRAIN LINE FITTING
RIGHT SIDE
A MINIMUM OF 12.000" [305] CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR REMOVAL OF CONTROL BOX. A MINIMUM OF 15.000" [381] 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" [51] OF CLEARANCE.
CONTROL PLATE
ACCESS DOOR
CORE
REVERSED DOOR OPTION
Dimensions in [ ] are in millimeters
Center of gravity
Direction of airflow
NOTES:
14 Gauge wire nut Condensate drain fitting (2x)
A B3/4" NPT
CONNECTION TABLE
CONNECTION SIZES
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.
VK0104A
PTS
6 LC POLY CORE 6 LC ALUMINUM CORE
LB.
38.49 24.96 51.29 33.26
148.00
Kg
17.45
11.32
23.26 15.08 67.13
PTS
A B
C
D
TOTAL
LB.
44.21 28.67 58.92 38.21
170.00
20.00 13.00 26.72
17.30
77.11
Kg
A B
C
TOTAL
D
6 LC ERV HM CORE
PTS LB. Kg
A
B
C
D
TOTAL
40.80 26.52 54.30 35.31
156.96
18.88 12.27 25.12 16.33 72.60

15
Appendix B (cont’d)
UNIT DIMENSIONS
B-2: 6LC AND V6LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)
28.12" [714]
14.00" [356]
4.00" [102]
1.75" [44]
8.00"
[203]
2.75" [70]
19.207" [488]
5.125" [130] Access Door
Strap Mounting
Location
Drain Fitting
NOTE: For units with the reversed door option, interior components will appear as a mirror image of the above diagram.
49.550" [1259]
Line Power
Control Box
Dry Contacts
Reverse Door Option
Fresh Air
To Building
Exhaust Air
To Outside
8.00"
[203]
4.00"
[102]
24.50"
[622]
3.53"
[90]
12.00"
[305] 15.00"
[381]
Access Door
Core
Reversed Door Option
Control Plate
A minimum of 12.00" [305] clearance from any obstruction is required for removal of control box.
A minimum of 15.00" [381] 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" [51] of clearance.
8.00"
[203]
8.00"
[203]
14.10"
[358]
14.00"
[356]
7.10"
[180]
Fresh Air
From Outside
Exhaust Air
From Building
4.00"
[102]
1.75"
[44]
VK0090A
NOTE: Dimensions in [ ] are millimetres.
6 LC POLY CORE
with recirculation module
6 LC ALUMINUM CORE
with recirculation module
LB.
197
Kg
90
PTS
TOTAL
LB.
231 105
Kg
TOTAL
PTS PTS LB. Kg
6 LC ERV HM CORE
with recirculation module
TOTAL 206 95

16
Appendix B (cont’d)
UNIT DIMENSIONS
B-3: 12LC AND V12LC (WITHOUT RECIRCULATION MODULE)
41.206"
[1047]
40.326"
[1024]
20.000"
[508]
5.715"
[145]
20.620"
[524]
14.250"
[362]
34.000"
[864]
5.125"
[130]
19.207"
[488]
4.028"
[102]
11.325"
[288]
12.000"
[305] 15.000"
[381]
20.000"
[508]
4.000"
[102]
2.750"
[70]
11.000"
[279] 20.000"
[508] 9.878"
[251]
24.500"
[622]
8.000"
[203]
8.000"
[203]
4.000"
[102]
8.000"
[203]
10.000"
[254]
B
A
FRESH AIR
TO BUILDING
EXHAUST AIR
TO OUTSIDE
LINE POWER
LOW VOLTAGE TERMINAL STRIPS
CONTROL BOX ACCESS
CONTROL COVER
ACCESS DOOR
CORE
REVERSED DOOR OPTION
ACCESS DOOR DRAIN FITTING
EXHAUST AIR
FROM BUILDING
FRESH AIR
FROM OUTSIDE
STRAP MOUNT LOCATION
REVERSE DOOR
OPTION
CD
B
A
TOP
OUTDOOR AIR
RETURN AIR
NOTE: FOR UNITS WITH THE REVERSED DOOR OPTION, INTERIOR COMPONENTS WILL APPEAR AS A MIRROR IMAGE OF THE ABOVE DIAGRAM.
A MINIMUM OF 12.000" [305] CLEARANCE FROM ANY OBSTRUCTION IS REQUIRED FOR REMOVAL OF CONTROL BOX.
A MINIMUM OF 15.000" [381] 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" [51] OF CLEARANCE.
EXHAUST AIR
SUPPLY AIR
FRONT VIEW
RIGHT SIDE
LEFT SIDE
Dimensions in [ ] are in millimeters
Center of gravity
Direction of airflow
NOTES:
PTS
12 LC POLY CORE 12 LC ALUMINUM CORE
LB.
54.02 38.98 54.02 38.98
186.00
Kg
24.50 17.68 24.50 17.68 84.36
PTS
A B
C D
TOTAL
LB.
60.41 43.59 60.41 43.59
208.00
27.40 19.77 27.40
19.77 94.34
Kg
A B
C
TOTAL
D
14 GAUGE WIRE NUT CONDENSATE DRAIN FITTING (2X)
A B3/4" mpt
CONNECTION TABLE
CONNECTION SIZES
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.
VK0106A
12 LC ERV HM CORE
PTS LB. Kg
A B
C D
TOTAL
57.84 41.68 57.92 41.68
199.12
26.84 19.35 26.88
19.34 92.41

17
Appendix B (cont’d)
UNIT DIMENSIONS
B-4: 12LC AND V12LC WITH RECIRCULATION MODULE (FACTORY INSTALLED)
8.00"
[203]
1.75"
[44]
10.00"
[254]
20.00"
[508] 2.75" [70]
Line Power
Dry Contacts
49.550" [1259] Strap Mounting
Location
Fresh Air
From Outside
Exhaust Air
From Building
5.125" [130]
Heat Recovery Core
Reversed Door Option
Access Door
15.00"
[381]
Drain Fitting
Access Door
20.000"
[508]
20.000"
[508]
10.000"
[254]
19.207"
[488]
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 12.00" [305] clearance from any obstruction is required for removal of control box.
A minimum of 15.00" [381] 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" [51] of clearance.
Reversed Door Option
Exhaust Air
To Outside
Fresh Air
To Building
41.24" [1047]
24.50"
[622]
8.00"
[203]
4.00"
[102]
3.53"
[90]
8.00"
[203]
8.00"
[203]
4.00"
[102]
1.75"
[44]
NOTE: Dimensions in [ ] are millimetres.
VK0107A
12.00"
[305]
Control Cover
PTS
12 LC POLY CORE
with recirculation module
12 LC ALUMINUM CORE
with recirculation module
LB.
247 Kg
112 PTS
TOTAL LB.
269 122
Kg
TOTAL
12 LC ERV HM CORE with recirculation module
PTS
TOTAL LB.
260
Kg
120

18
Appendix B (cont’d)
UNIT DIMENSIONS
B-5: 7000
10.000"
[254]
Dimensions in [ ] are in millimeters
Center of gravity Direction of airflow
7000
LB. Kg
32.74 14.85 68.46 31.05 35.20 15.97 73.60 33.38
210.00
1.875"
[48]
EXHAUST AIR
OPENING
SUPPLY AIR
OPENING
20.750"
[527]
8.000"
[203]
10.750"
[273]
7.500"
[191]
10.605"
[269]
12.104"
[307]
2.157"
[55]
2.000"
[51]
37.000"
[940]
24.736"
[628]
31.080"
[789]
51.000"
[1295]
21.000"
[533]
HEAT RECOVERY CORE
ACCESS DOOR
47.000"
[1194]
8.000"
[203] DEFROST AIR
OPENING
EXHAUST AIR
OUTDOOR AIR
OUTDOOR
AIR
OPENING
RETURN AIR
OPENING RETURN AIR
CONDENSATE DRAIN
SUPPLY AIR
3.625"
[92]
2.000"
[51]
14.000"
[356]
1.875"
[48]
3.750"
[95]
40.500"
[1029]
8.000"
[203]
12.250"
[311]
8.000"
[203]
15.250"
[387]
B
A
2.000"
[51]
Line Voltage In
A minimum of 12.00" [305] clearance from any obstruction is required for power hook-up, low voltage remote connection, and control panel access.
A minimum of 21.00" [533] 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" [51] of clearance.
Low Voltage
Terminal Strips
8.000" [203]
A B
C D
TOTAL 95.25
22.500"
[572]
AB
CD
TOP
RIGHT SIDEFRONT
NOTES:
LEFT SIDE
PTS
14 gauge wire nut Condensate drain fitting (2x)
A B3/4" NPT
CONNECTION TABLE
CONNECTION SIZES
VK0093A

19
Appendix C
BALANCING DAMPERS POSITION
6LC, V6LC, 12LC AND V12LC
Balancing
Damper
VJ0135A Canvas Vibration Isolator
Reverse Door Option
Exhaust Air
From Building
Fresh Air
From Outdoors
Min. 8" (203 mm)
(Optional) Canvas Vibration Isolator
Gravity Backdraft Damper
(for recirculation
defrost option only)
Min.12" (305 mm)
Exhaust Air
to Outdoors
Fresh Air
to Building
7000
Balancing Damper
(not supplied)
Canvas Vibration Isolator
Dry Contacts
VJ0123A

20
Appendix D
DRAIN CONNECTIONS
6LC, V6LC, 12LC AND V12LC
Min. 3”
[76 mm]
Min. 1”
[25 mm]
3/4” NPT
coupler
Water trap
Min. 4”
[102 mm]
Min. 4”
[102 mm]
Plastic hose
To drain
NOTES:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum 1/4” per foot.
Min. 1”
[25 mm]
Min. 3”
[76 mm]
Plastic drain fitting
To drain
Copper or
plastic pipe
VO0002A
7000
Min. 3”
[76 mm]
Min. 1”
[25 mm]
3/4” NPT
coupler
Water trap
Min. 4”
[102 mm]
Min. 4”
[102 mm]
Plastic hose
To drain
NOTES:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum 1/4” per foot.
Min. 1”
[25 mm]
Min. 3”
[76 mm]
Plastic drain fitting
To drain
Copper or
plastic pipe
VO0001A