Greentek LCH-4E User manual

Installation, Operation, and Maintenance Manual
Manuel d’installation, de fonctionnement et de maintenance
Light commercial models
Energy Recovery Ventilators
Literature Item #: 464081
Rev Date: 2024-01-03
Numéro d'article de la littérature: 464081
Date de revision: 2024-01-03
LCH-4E • LCH-7E • LCH-12E
Your ventilation system should be installed in conformance with the appropriate provincial requirements or, in the absence of
such requirements, with the current edition of the National Building Code, and / or ASHRAE’s “Good Engineering Practices”.
Greentek reserves the right to modify, at any time and without notice, any or all of its products’ features,
designs, components and specifications to maintain their technological leadership position.
Please visit our website www.greentek.ca for more detailed technical information.
Votre système de ventilation doit être installé conformément aux exigences de la province où vous habitez ou, à défaut de
telles exigences, conformément à l’édition actuelle du Code national du bâtiment du Canada ou aux « méthodes d’ingénierie
appropriées » de l’ASHRAE.
Greentek se réserve le droit de modifier partiellement ou entièrement, en tout moment et sans préavis, les car-
actéristiques, la conception, les composants et les spécifications de ses produits, afin de conserver sa position
de leader de technologie.
S'il vous plaît visitez notre site siteweb www.greentek.ca pour des informations techniques plus détaillées.
Canada
50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
Tel.: [phone] • email: [email protected]

32
Greentek Product Numbers Explained
LCH-4E
L = Lighting
C = Commercial
H = Horizontal Configuration
4 = 450 CFM
E = Energy Recovery (ERV)
Note Warning/
Important
note
Information Technical
information Practical tip
PLEASE READ AND SAVE THESE INSTRUCTIONS
Before installation, careful consideration must be given to how this system will operate if connected to any other
piece of mechanical equipment, i.e. a forced air furnace or air handler, operating at a higher static. After installation,
the compatibility of the two pieces of equipment must be confirmed by measuring the airflow’s of the Energy
Recovery Ventilators. It is always important to assess how the operation of any ERV may interact with vented com-
bustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.).
Never install a ventilator in a situation where its normal operation, lack of operation or partial failure may result
in the backdrafting or improper functioning of vented combustion equipment!!!
Products are designed and manufactured to provide reliable performance, but they are not guaranteed to be 100%
free of defects. Even reliable products will experience occasional failures, and this possibility should be recognized
by the user. If these products are used in a life support ventilation system where failure could result in loss or injury,
the user should provide adequate back-up ventilation, supplementary natural ventilation or failure alarm system, or
acknowledge willingness to accept the risk of such loss or injury.
Your ventilation system should be installed in accordance with the local building code that is in effect. In absence
of such requirements, it is recommenced to check with local authorities having jurisdiction in your area prior to
installing this product.
Table of content
INSTALLATION
Location ...........................................................................4
Port Configuration .....................................................................4
Installing Duct Connections...............................................................5
AIRFLOW BALANCING.........................................................................6
INSTALLATION EXAMPLES
Fully Dedicated Systems.................................................................7
Partially Dedicated Systems (direct connections) ...............................................7
Partially Dedicated Systems (indirect connections) ..............................................8
Simplified Installation ...................................................................8
MODES OF OPERATION ........................................................................9
Speed Setting ........................................................................9
LOW VOLTAGE CONTROL SYSTEM ................................................................9
WALL CONTROLS ...........................................................................10
MAINTENANCE .............................................................................12
WIRING DIAGRAM ..........................................................................13
INSTALLATION VERIFICATION TEST...............................................................18
PARTS LIST ...............................................................................37
Greentek Product Numbers Explained
LCH-7E
L = Lighting
C = Commercial
H = Horizontal Configuration
7 = 750 CFM
E = Energy Recovery (ERV)
Greentek Product Numbers Explained
LCH-12E
L = Lighting
C = Commercial
H = Horizontal Configuration
12 = 1200 CFM
E = Energy Recovery (ERV)

54
Installation
The ERV must be located in a conditioned space where it will be possible to conveniently service the unit. Typically the ERV would be located in the
mechanical room, above a drop ceiling or an area close to the outside wall where the weatherhoods will be mounted. Attic installations are not normally
recommended due to extreme temperatures, and difficulty in performing required service & maintenance. If an attic is selected, special care should be
taken in ensuring the unit will perform as intended. Unit may need to be protected with an insulated shelter built on site.
Connecting appliances to the ERV It is not recommended, including:
• clothes dryer
• kitchen exhaust hoods
• combustion venting
• central vacuum system
These appliances may cause lint, dust or grease to collect in the ERV , damaging the unit.
Connecting any of these type of appliances to the ERV will invalidate your warranty
A
B
C
DE
F
G
Model A B C D E F G
Kg lbs Kg lbs in. mm. Kg lbs Kg lbs Kg lbs in. mm.
LCH-4E 16.6 36.6 15.6 34.4 12.6 320 58 127.9 13.6 30 12.7 28 17.6 448
LCH-7E 21.7 47.8 20.4 44.9 15.4 390 76 168 17.8 39.3 16.6 36.6 17.6 448
LCH-12E 27.4 60.5 24.3 53.5 21.4 544 97.5 215 24.7 54.5 21.3 47 18 455
Port configuration
The unit has access doors on the front and back. Also, the main control panel may be moved from front to back allowing for ducting layout.
COLD SIDE
COLD SIDE
WARM SIDE
WARM SIDE
Factory Setting. Unit may be easily reversed
in eld.
Installing ducts going to / from outside
Installing the ducting to the weatherhoods
Outside weatherhoods
The weatherhoods must have built-in "bird" screens with 1/4 inch (6.35 mm) minimum mesh to prevent birds and rodents from entering into the
ductwork. Do not use smaller mesh as it will be very susceptible to plugging up. The preferred location of the weatherhoods is:
• No less than 10 ft. (3 m) apart from each other.
• At least 18 inches (457.2 mm) above snow line or ground level.
• Supply hood must be kept away from sources of contaminants, such as automobile exhaust fumes, gas meters, garbage cans, containers,
cooling towers, tar roofs, etc.
• Avoid prevailing winds, whenever reasonably possible.
The outside perimeter of the weatherhood must be sealed to prevent leakage into the building.
Careful consideration should be given to selecting an outside hood with a face velocity low enough so as not to encourage the migration of rain or snow
into the ductwork.
Ducting from the weatherhoods–To and From the ERV
Galvanized sheet metal ducting with sufficient cross section with an integral single piece of insulated wrap with vapor barrier should be used to connect
the ERV to the weatherhoods. Insulated flex duct may be used in moderation, if sized and installed properly. (Consult local codes)
A minimum R value of insulation should be equal to 4 (RSI 0.75) ,consult local codes.
All ducts should be sealed using a good bead of high quality caulking (preferably acoustical sealant) and a high quality aluminum foil tape, or other
approved duct sealant.
Installing Drain Line
Through normal operation and including defrost mode, the ERV may produce some condensation. This water should flow into a nearby drain, or be taken
away by a condensate pump. The ERV and all condensate lines must be installed in a space where the temperature is maintained above the freezing
point. A “P” trap should be made in the drain line. This will prevent odors from being drawn back up into the unit.
Remore the drain spout, invert it so it protrudes from the botton of the unit and re-install in order to connect a condensate drain
Install the drain hose, making a “P” trap
Caution:
A Drain and Tubing (included) must be installed for all HRV units. For ERV units, drain is not required,
however, it is recommended for climates where outdoor temperature typically remains below -25°C
(-13°F) combined with an indoor relative humidity higher than 40% for a period of 24 hours or several
days in arow.
Location

76
Exhaust air ducting
The stale air exhaust system is used to draw air from the points in the building where the worst air quality problems occur. ( See installation
examples in the manual.)
Installing ducts to / from inside
Direct connection to furnace/ air handler return duct
• Should you wish to hard duct the supply air directly into the cold air return of the HVAC systems, remember to check the airflow balance of the ERV
with the HVAC systems fan both “on”and “off” to determine that it does not imbalance the ERV more than 10%. Make sure you respect the minimum
distance from the supply air in of the ERV and the HVAC systems.
• It may be necessary to install a separate fresh air supply ductwork system if the cooling is other than forced air.
When installing an ERV, the designer and installer should be aware of local codes that may require smoke detectors and/or firestats in the HVAC
or ERV ductwork.
Because an ERV is designed to bring fresh air into the building, structures may require supply voltage interrupt when smoke or flame sensors are
triggered, or when a central fire alarm system is activated.
To maximize airflow in the ductwork system, all ducts should be kept short and have as few bends or elbows as possible. Forty-five degree are
preferred to 90elbows. Use “Y” tees instead of mitered tee whenever possible.
All duct joints must be fastened with screws or duct sealant and wrapped with a quality duct tape to prevent leakage. Aluminum foil duct tape is
recommended.
Supply air ducting
In buildings without a forced air HVAC systems, fresh air should be supplied to all habitable areas. It should be supplied from high wall or ceiling
locations. Grilles that diffuse the air comfortably such as grille {MGE (metal)}grilles with "coanda effect" are recommended.
Optional inline duct heaters may be used to add heat if required.
AThe duct’s airflow velocity
is generally measured
with a magnehelic gauge
and a pitot tube.
• To avoid airflow turbulence
and incorrect readings, the
airflow velocity should be
measured on steel ducting
a minimum of 3 duct
cross-sections from the
unit or elbow and before
any transition.
• The balancing procedure consists of measuring the exhaust air leaving the system and the supply air entering the system and ensuring that these
two are equal. A deviation of 10% or less is acceptable.
Airflow balancing
A*
Pitot tube and gauge
A professional air balancer should be contacted to commission the system properly. A skilled HVAC Tech may complete the balance
of air providing they possess the proper equipment. Call Greentek Technical support for assistance.
Installation examples
* Drawings are illustrations only and actual port locations and airflow directions may vary, consult unit spec sheets.
It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended.
The amount of air (CFM) that an ERV will deliver is directly related to the total external static pressure (E.S.P.) of the system. Static pressure
is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc.
Fully Dedicated System
• Stale air drawn from areas of contamination
• Fresh air supplied to main areas
• ERV airflow should be balanced
• External heating or cooling coil may be needed if air is not able to mix comfortably.
SUPPLY IN
EXHAUST OUT
HRV UNIT
SUPPLY DUCT
RETURN AIR DUCT
EXHAUST AIR TO HRV UNIT
AIR HANDLER UNIT
SUPPLY IN
BALANCING DAMPERS
SUPPLY IN
EXHAUST OUT
HRV UNIT
SUPPLY IN
BALANCING DAMPERS
Partially Dedicated System (Direct Connection)
• Stale air drawn from areas of contamination
• Fresh air supplied to return of air handler
• Air Handler blower may need to operate when call for ventilation
• ERV airflow should be balanced
ERV UNIT
ERV UNIT
EXHAUST AIR TO ERV UNIT

98
Installation examples (Cont'd)
* Drawings are illustrations only and actual port locations and airflow directions may vary, consult unit spec sheets.
It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended.
The amount of air (CFM) that an ERV will deliver is directly related to the total external static pressure (E.S.P.) of the system. Static pressure
is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc.
SUPPLY IN
EXHAUST OUT
HRV UNIT
RETURN AIR DUCT
AIR HANDLER UNIT
SUPPLY IN
BALANCING DAMPERS
SUPPLY IN
EXHAUST OUT
HRV UNIT
SUPPLY DUCT
EXHAUST AIR TO HRV UNIT
12" BREATHER SPACE
CEILING RETURN AIR PLENUM
AIR HANDLER UNIT
SUPPLY IN
BALANCING DAMPERS
Simplified Installation
• Stale air drawn from return of air handler
• Fresh air supplied to return of air handler, further down
stream of ERV exhaust
• Air Handler blower must operate when ERV is providing
ventilation
• ERV airflow should be balanced
Partially Dedicated System (Indirect Connections)
• Stale air drawn from areas of contamination
• Fresh air supplied into ceiling return air plenum or grille
• ERV airflow should be balanced
ERV UNIT
EXHAUST AIR TO ERV UNIT
ERV UNIT
1. Continuous / Ventilation Mode
In this mode of operation both fans are operating and exchanging inside air for outside air. The energy recovery ventilator (ERV) will operate at the selected
rate, either at low or medium speed, and switches to high speed when activated by an optional remote control. The "LOW (reduced)" and "HIGH (Normal)"
fan speed selection will cause the unit to operate in continuous ventilation mode at a reduced exchange rate. Continuous mode is recommended, since
pollutants are slowly but constantly being generated in a building.
2. Intermittent / Standby Mode
The system is always on standby and operates at high speed when activated by an optional remote control (required): "Standby" should be selected if
the user wishes to stop the unit from continuous exchange.
3. Defrost by evacuation
A preset defrost sequence is activated at an outdoor air temperature of 23°F (-5°C) and lower.
During the defrost sequence, the supply blower shuts down & the exhaust blower continues to ventilate for a preset time. The unit then returns to
the normal operation, and continues the cycle.
Modes of operation
The ERV is shipped from the factory on low speed, intermittent operation can be obtained by toggling switch located on outside of cabinet.
The voltage selection for low (reduced) speed of the unit is done via jumpers shown in the illustration below. The default setting 75V.
Setting low speed (LCH-12E)
Low: 75V
(Factory Default)
Low: 90V
Configurable speed control for low (reduced) speed
CAUTION MAKE SURE THE POWER TO THE UNIT IS DISCONNECTED BEFORE MAKING ANY CHANGES

1110
WALL CONTROLS
1. Ensure that unit is not plugged when connecting the control
2. Recirculation mode is only available in the Solace series and the C3.14 model.
The wiring connectors can be removed for easier connection.
* Please see instruction manuals for individual controls for proper wiring and set up of control systems.
CENTRAL CONTROLS
These cannot be used with another central control
*Maintain polarity between control and ERV (+ →+ ; - →-)
FEATURES CONNECT TO
STS 2.0 • Our most complete, yet easy-to-use control system
• Sleek design with backlight touchscreen LCD
• ECO mode selects the best operating mode and speed for the season, minimizing energy use associated with
ventilation
• Set preferred indoor relative humidity range and ventilation mode for day and night conditions
• No battery to replace, all programmed settings are retained during power outages
• Maintenance reminder indicator
• Error code messages reduce troubleshooting time
EHC 2.5 • Three (3) modes of operation: Ventilation Mode, Recirculation Mode, Stand by Mode.
• Once you’ve selected the operation mode, the fan speed can be selected: Reduced, Medium,
Normal or 20min/h using the arrow buttons.
• Ventilation Mode: The ventilation system takes stale air from inside your home and replaces it
with fresh outdoor air while recovering the energy of the air that’s exhausted to the outside.
• Recirculation Mode: Your ventilation system takes air from areas of your home and
redistributes it in other rooms to avoid stagnant air areas and to distributes heated or cooled
air. No outdoor air is introduced to the building.
• Standby Mode: The ventilation system is inactive unless the indoor relative humidity is above
the setpoint on the control or a timer switch (installed separately) is activated.
EHC 2.0 • An electronic wall control that is compatible with all Greentek HRV/ERV models. This control activates the
system on 3 possible modes of operation: ECONO, 20 MIN/H, CONT.
• ECONO Continuous operation in ventilation mode at low or medium speed.
• 20 MIN/H 20 minutes ON, 40 minutes OFF Intermittent (Yellow)
• CONT Continuous high speed in ventilation or recirculation mode.
• OFF Standby mode, both fans off
B
A
→
D+
WALL CONTROLS (CONT'D)
AUXILIARY CONTROL –These controls can be paired with central controls or combined together.
*Maintain polarity between control and ERV (+ →+ ; - →-)
T SERIES FEATURES CONNECTS TO
T4* • 20- minute timer with LED light
• Boosts system to high speed with the touch of a button
• Up to 5 can be used in one system
• Use in bathroom, kitchen, laundry room
T5* • 20/40/60 minute timer with LED light
• Boosts system to high speed with the touch of a button
• Up to 5 can be used in one system
• Use in bathroom, kitchen, laundry room
+
D D
RD-1 • Rotary dial Dehumidistat
• Multiple units can be used
• We recommend setting the relative humidity above 80% during the summer
D
D

1312
Clean core on a average every 3-6 months or as needed.
1. Remove access doors and filters
2. Remove the core from the unit.
3. With one of the core's inlet facing down, place it in a large sink, bathtub, or shower.
4. Pour clean tap water through the face of the core facing upward until it runs clear. Ensure the entire surface is rinsed.
5. Rotate the core so that its other air inlet is facing down and repeat step 4.
6. With the plates still oriented vertically allow the core to dry, normally 2-3 hours.
Core installation label on the outer end of the core.
To install the clean Core and Filters.
a) First mount the bottom flange of the core guide into the bottom channel approximately 1/4" (6mm)
b) Mount the left or right side flange of the core guide approximately 1/4" (6mm) followed by the other side
c) Mount the top flange of the core guide into the top channel approximately 1/4" (6mm)
d) With all four corners in place and the core straight and even, push hard in the centre of the core until the core stops on the back
of the cabinet.
Maintenance
The motor - The motors are factory balanced and lubricated for life. They require no maintenance.
The unit - The inside of the unit should be wiped clean as needed.
Outside hoods - The outside hoods need to be checked every season to make sure there are no leaves or insects blocking the airflow. Check
regularly that there are no pollutants near the intake hood. Make sure they are clear of any snow accumulation during the winter months.
CAUTION MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK
The following components should also be inspected regularly and well maintained.
5
6
3
4
The filters need to be checked and cleaned once a month or when they appear dirty.
Filters
ERV Core
Wiring Diagram - LCH-4E
LCH-4E With GTDMK LCH-4E
(GTDMK)

1514
Wiring Diagram - LCH-7E
(GTDMK)
LCH-7E With GTDMK LCH-7E
Wiring Diagram - LCH-12E
LCH-12E With GTDMK
(GTDMK)

1716
WIRING DIAGRAM (CONT'D) DDC WIRING GUIDE
W
R
G
C
Y
WRGY
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
RV-CTRL
24VAC
Standard Furnace Interlock Wiring
W
R
G
C
Y
WRGY
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
SHUTOFF
DAMPER
SHUTOFF
DAMPER
RV-CTRL
24VAC
Standard Furnace Interlock Wiring (w/Damper)
13
COIL
CONTROL RELAY
(TERMINAL LABELING MAY VARY)
R
C
WIRING DIAGRAM (CONT'D)
WIRING DIAGRAM TO
FURNACE
FOR A FURNACE
CONNECTION TO
A COOLING SYSTEM:
As per building codes and installation requirements for combustion appliances:
Air return ducts, or openings for air return, should not be placed in enclosed spaces containing combustion
appliances that are subject to spillage.

1918
WIRING DIAGRAM (CONT'D)
WIRING DIAGRAM (CONT'D)
W
R
G
C
Y
WR G Y
Standard Furnace Interlock Wiring
THERMOSTAT
TERMINALS
FURNACE/HEATING
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
W
R
G
C
Y
WR G Y
Alternate Furnace Interlock Wiring
THERMOSTAT
TERMINALS
FURNACE/HEATING
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
WIRE JOINT
WIRING DIAGRAM TO
FORCED AIR SYSTEM
FOR A FURNACE
CONNECTION TO A COOLING
SYSTEM:
On some newer furnaces and older
thermostats, energizing the R and
G terminal at the furnace has the
effect of energizing the Y at the
thermostat and thereby turning on
the cooling system. If you identify this
type of thermostat, you must use the
“Alternate Accessory Control Contact.”
Standard Accessory Control Contact
Alternative Accessory Control Contact
As per building codes and installation requirements for combustion appliances:
Air return ducts, or openings for air return, should not be placed in enclosed spaces containing combustion
appliances that are subject to spillage.
Installation Verification Test
LCH-4E, LCH-7E, LCH-12E Models
Without external control
1. Fan speed selector switch
• Set fan Speed selector switch to Standby.
2. Start-up
• Apply power to unit
• Unit should enter Exhaust only defrost mode for a 10 second duration and the following should occur:
Exhaust fan runs in HIGH (Normal) speed
Supply fan remains off
3. Standby
• Following the start-up unit should enter Standby mode. The following should occur:
Exhaust fan shuts off
Supply fan remains off
4. LOW (Reduced) speed
• Set fans speed selector switch LOW (Reduced) speed. The following should occur.
Exhaust fan runs in LOW (Reduced) speed
Supply fan runs in LOW (Reduced) speed
5. HIGH (Normal) speed
• Set fans speed selector switch HIGH (Normal) speed. The following should occur.
Exhaust fan ramps up to HIGH (Normal) speed
Supply fan ramps up to HIGH (Normal) speed
6. Test completion
• Set fan speed selector switch to desired setting
• Installation Verification test is complete
With external control
1. Start-up
• Apply power to unit
• Unit should enter Exhaust only defrost mode for a 10 second duration and the following should
occur:
Exhaust fan runs in HIGH (Normal) speed
Supply fan remains off
2.
• Following start-up unit will respond to external control
• Consult user manual/instruction provided with external controller and ensure unit responds
appropriately.
3. Test completion
• Installation Verification test is complete
Limited Warranty
• The energy recovery core has a
limited 3 year warranty.
• The warranty is limited to 3 years on
components and 3 years on motors
from the date of purchase, including
parts replaced during this time
period. If there is no proof of
purchase available, the date
associated with the serial number will
be used for the beginning of the
warranty period.
• The limited warranty covers normal
use. It does not apply to any
defects, malfunctions or failures as
a result of improper installation,
abuse, mishandling, misapplication,
fortuitous occurrence or any other
circumstances outside Greentek’s
control.
• Inappropriate installation or
maintenance may result in the
cancellation of the warranty.
• Any unauthorized work will result in
the cancellation of the warranty.
• Greentek is not responsible for any
incidental or consequential damages
incurred in the use of the ventilation
system.
• Greentek is not responsible for
providing an authorized service
centre near the purchaser or in the
general area.
• Greentek reserves the right to supply
refurbished parts as replacements.
• Transportation, removal and
installation fees are the responsibility
of the purchaser.
• The purchaser is responsible to
adhering to all codes in effect in his
area.
* This warranty is the exclusive and only warranty in
effect relative to the ventilation system and all other
warranties either expressed or implied are invalid.