INSTALLATION
GUIDE
ITEM# 101343 Rev. Date 06/10/08
• LCH 30-700 SERIES
• LCH 70-1200 SERIES
Product of
Imperial Air Technologies
Imperial Air technologies Inc. reserves the rights to modify a product, without prior notice,
whether in price, design, color or codes, in order to offer at all times quality products that are highly competitive.
important - Please read manual before installation
Notice: Prior to installing, serious consideration must be taken to insure this ventilation system will operate properly if
integrated to any other type of mechanical system, i.e. a forced air system, or an air handling unit. To insure proper operation
& compatibilities of both system, it is required that the airflow’s of the LCH Heat Recovery Ventilator (HRV) or Energy
RecoveryVentilator (ERV) be balanced, by following the procedures found in this manual.
CAUTION: DO NOT INSTALL IN A COOKING AREA OR CONNECT DIRECTLY TO ANY APPLIANCES
CAUTION: TURN OFF ALL INTEGRAL DISCONNECTS BEFORE SERVICING
to reduce or avoid the hazards of electric shock and fire:
cautions concerning the operation and full efficiency of this product:
•While servicing of cleaning the ventilation system, always
remove the power plug from the AC wall outlet.
•Do not obstruct or cover the air intake or air outlet of the
ventilation system.
•To reduce the chance or avoid the hazards of electric shock
and fire, do not perform any service to the ventilation
system other than that stated in the operating manual
instructions.
•Do not modify, repair or disassemble this ventilation system.
They are to be performed by authorized serviced personnel
only. Fire, electrical shock and/or bodily injury may occur if
not.
•Do not use ventilation system for outdoor application.
•To prevent injuries, do not operate the ventilation system
while servicing or maintaining. There are impeller wheels
turning at a very high speed that must fully stop rotating
prior to accessing the inside of the unit.
•Do not pull or twist electrical connection when disconnecting
it from the ventilation system.
•Do not use the ventilation system for removal of flammable
fumes or near flammable gases.
•Use a dedicated AC 120V outlet only.
Limited Warranty
•Always assess the operation of the ventilation system how
it may interact with vented combustion equipment (ie. Gas
Furnace, Oil Furnace, Combustion, Appliances, etc.)
Applications
All our products are backed by the best limited warranty in
the industry, for your peace of mind.
•Schools
•Classrooms
•Locker Rooms
•Airports
You benefit from a 15 year limited warranty on the aluminum
and polypropylene core, a 2-year limited warranty on our
ventilation motors, a 3-year limited warranty on the enthalpic
core, and a 2-year limited warranty on all other components.
•Conference Rooms
•Floral Shops
•Restrooms
•Veterinary Hospitals
•Barber Shops
•Stores
•Office Buildings
•Large Homes
•Bars & Grills
•Restaurants
2
About Us
Imperial Air Technologies Inc. is the only manufacturer that offers you a complete range of products designed to improve indoor
air quality, and that provides a wide selection of accessories to facilitate installation.
Our vision — To offer a complete range of products that satisfy environmental concerns.
Whether your needs involve ventilation or filtration, we have the customized solution for you, with our range of quality products
backed by the best warranty in the industry.
Table of contents
1. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Model LCH 30-700 Specifications
LCH 30-700A (Aluminum Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LCH 30-700B (Polypropylene Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LCH 30-700C (Enthalpy Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Model LCH 70-1200 Specifications
LCH 70-1200A (Aluminum Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LCH 70-1200B (Polypropylene Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LCH 70-1200C (Enthalpy Core) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
5. Schematic Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6. DuoTrol™ & Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
7. Balancing the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8. Controls and Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
9. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
10. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3
32.5”
2. Dimensions lch 30-700 Series
1040mm
41”
1000mm
39.5”
979mm
38.5”
821mm
32.5”
979mm
38.5”
284mm
11.2”
821mm
592mm
32.5”
23.3”
284mm
11.2”
592mm
23.3”
All Ducts
203mm x 355mm
8” x 14”
820mm
32.5”
642mm
25”
Top View
Left View
651mm
25.6”
Right View
979mm
38.5”
2. Dimensions lch592mm
30-700
Series (U Channel)
23.3”
284mm
11.2”
Drain Nipples
All Ducts
203mm x 355mm
8” x 14”
940mm
37”
AirFlow
642mm
25”
760mm
30”
93.5mm
3.7”
Exhaust Air
317mm
12.5”
651mm
25.6”
413mm
16”
93.5mm
3.7” Supply Air
Drain Nipples
Outdour Air
Return Air
413mm
16”
93.5mm
3.7”
317mm
12.5”
LCH 30-700A (HRV)
Light commercial aluminum core
(300 to 700 CFM). Limited 15 years
warranty on the aluminum core.
LCH 30-700B (HRV)
Light commercial polypropylene core
(300 to 700 CFM). Limited 15 years
warranty on the polypropylene core.
*Residential application only.
4
LCH 30-700 (ERV)
Light commercial enthalpy core
(300 to 700 CFM). Limited 3 years
warranty on the enthalpy core.
317mm
12.5”
47.3”
3. Dimensions lch 70-1200 Series
1138mm
44.8”
1098mm
43.2”
0000mm
00.0”
1204mm
47.4”
0000mm
00.0”
0000mm
00.0”
1204mm
0000mm
47.4”
00.0”
0000mm
00.0”
0000mm
00.0”
All Ducts
203mm x 508mm
8” x 20”
1203mm
47.3”
000mm
00.0”
Top View
Left View
652mm
25.7”
Right View
0000mm
00.0”
3. Dimensions lch0000mm
70-1200
Series (U Channel)
00.0”
0000mm
00.0”
Drain Nipples
All Ducts
203mm x 508mm
8” x 20”
1038mm
40.9”
AirFlow
000mm
00.0”
1143mm
47.3”
00.0mm
Exhaust Air
0.0”
652mm
25.7”
000mm
00”
000mm
00.0”
00.0mm
0.0”
Supply Air
000mm
00.0”
Drain Nipples
Outdour Air
Return Air
000mm
00”
00.0mm
0.0”
000mm
00.0”
LCH 70-1200A (HRV)
Light commercial aluminum core
(700 to 1200 CFM). Limited 15 years
warranty on the aluminum core.
LCH 70-1200B (HRV)
Light commercial polypropylene core
(700 to 1200 CFM). Limited 15 years
warranty on the polypropylene core.
LCH 70-1200C (ERV)
Light commercial enthalpy core
(700 to 1200 CFM). Limited 3 years
warranty on the enthalpy core.
*Residential application only.
5
4. installation
Saddle
Installation
Threaded Rod
suspended
Installation
(Not included)
Vibrator Isolators
(Not included)
Anchor unit to curb
Wood or Metal Curb
(Not included)
Vibrator Isolators
(Not included)
(Recommended to anchor curb. Insure there
is enough clearance for condensation fitting
+ drain for ultimate performance of the unit.)
U Channel
(Included)
U Channel
(Included)
Vibrator Isolators recommended
(Not included)
Drain Installation
Install the condensate line (10 feet
included in drain kit). Insert condensate
tubing by pushing clear plastic line over
drain fittings. With a wrench, tighten the
nut another half turn to insure a better
seal. (Use a condensate pump if you don’t
have access to the floor drain.)
SKU 100770
SKU 101262
A “P” trap is required to be added to the
drain, this will help prevent odors from
being drawn back into the unit.
6
“P” trap held with
tape or tie wrap.
5. schematic wiring diagram
Field Wiring Interface
LCH 30-700 & LCH 70-1200
A - DPDT Contact with a rated voltage
of 24V and coil resistance of 160Ω
± 10% at 23˚C. Power consumption
at rated voltage is approximately
1.2VA. CSA Safety Approval Rating
of 1/2HP 7.5FLA 125VAC.
B - Class 2 Transformer with Primary
Voltage of 120VAC. Secondary
Voltage of 24V and 40VA.
COM
NO
NC
A
Exhaust
Fan
Transformer
24 VAC
B
Blue
Black
Brown
Blue
Green
1
2
3
4
1
2
3
4
NC
Black
Black
Brown
Blue
Green
NO
Timer
N
R
N
G
R
N
B
G
Fan 2
COM
B
Capacitor
Fan 1
W
Red
Damper
Blue
Sensor
Master
L
G
N
Lock
GRD
Supply
Fan
1
2
3
4
GRD N L
Black
Brown
Blue
Green
1
2
3
4
1
2
3
4
Black
Brown
Blue
Green
Capacitor
Thermistor
6. Benefits of the Duotrol™ & Balancing
Mode
Selector
Balancing
Control
Acts as a mode selector
Acts as a balancing control
(see instructions)
Intermittent: When
the selector switch
is in the intermittent
position the HRV or
ERV will only run when there is a call for
ventilation by any control. At that time
the unit will run on high speed until the
condition is satisfied.
Continuous: When the selector switch
is in the continuous position the HRV or
ERV will run continuously on pre set
speed except when there is a call for
override by any control.
The DuotrolTM lets
contractor set the high
speed of the motors for
balancing purposes (Exhaust air, Fresh
air and Both motors).
(+) Button:
Increase the speed of
the selected motor.
(-) Button:
Decrease the speed of
the selected motor.
INTER.: Selects the exhaust air motor
CONT.: Selects both exhaust and fresh
air motors
OFF: Selects the fresh air motor
Off: When the selector switch is in
the off position the HRV or ERV will
not come on even if there’s a call for
ventilation by any control.
7
7. Balancing the unit with the Duotrol™ System
The light indicator shows you in which mode the
DuotrolTM System is in.
GREEN LIGHT Mode Selector
YELLOW LIGHT Balancing Mode
Using the Selector Switch
Note to installer
When on Balancing Mode, the Selector Switch
allows you to choose the motor you want to set.
figure 7.1 DuotrolTM System
Closed Duotrol Cover
1. INTER (Exhaust Motor)
2. CONT (Both Motors)
3. OFF (Supply Motor)
Step 1 Press the (+) and (–) buttons simultaneously until
you see the yellow light. Once the indicator light
turns yellow you are in balancing mode.
figure 7.2 Inserting Air
flow grid in duct
figure 7.3 Seal Air flow grid
in duct with duct tape.
Step 2 When in balancing mode the selector switch
becomes the motor selector switch. INTER (Right
Motor), CONT (Both Motors) and OFF (Left Motor)
Step 3 Once the total cfm needed is determined, you
can start balancing the HRV/ERV. Set your fresh
air supply by selecting the «OFF» position on the
DuotrolTM. Install your magnehelic gauge and air flow
grid in the fresh air duct.
Step 4 Press the (–) button to decrease the cfm or press
the (+) button to increase the cfm.
Step 5 Then perform the same operation on the stale
air side by selecting the «INTER» position on the
DuotrolTM.
Step 6 The «CONT» position will allow you to adjust the cfm
on both motors proportionately (if necessary).
Step 7 Once this is completed, you have set the high speed
on your HRV/ERV. To lock balancing mode you
must press (+) and (–) buttons simultaneously and
release. The indicator light will turn green to indicate
normal operation mode.
8
Step 8 Once high speed is set and locked, switch to
continuous on the DuotrolTM. By using (+) and (-)
buttons continuous speed on the HRV/ERV.
Step 9 Select the mode of operation. (INTER, or CONT)
8. CONTROLS CONNECTION
RD - 1
Figure 8.1
G
G
R
R
G
R
RD-2, RD-3P, RD-3D, RD-4P
& RD-4D,
Figure 8.2
NOTE: RD-3D & RD-4D are for
models DH7.15 & SS3.12DD only.
R
G
B
W
R
G
B
R
W
G
B
W
T3 Timer
Figure 8.3
B G RB G R
B G R
WARNING: Always disconnect the unit prior to making any connections. Failure to disconnecting the power could result in electrical shock or can damage the electronic boards, wall controls and/or unit.
CAUTION: Minimum wire requirements is LVT18 CSA/UL 4 strain to insure proper connection.
9
8. CONTROLS CONNECTION
Standard Forced Air
Interlocking Wiring
Figure 8.4
A relay is normally used when tying a
ventilation system onto forced air distribution
system. Our Duotrol System is equipped
with an internal relay that will activate the
forced air system ventilator when there is
a demand from the HRV /ERV. The Duotrol
System will activate the INTERLOCK relay
during the following modes: Continuous,
Override,Recirculation and Defrost.
See wiring diagram.
Low Voltage Controller
Legend:
Force Air System
Field Installed Low Voltage
Alternate Forced Air
Interlocking Wiring
Figure 8.5
Some forced air system thermostat will
activate the cooling system when tied
using the «Standard forced air interlocking
wiring».
If you have identify this type of thermostat
you must proceed with the «Alternate
Forced Air Wiring».
CAUTION: Thermostat that control A/C
system must use the Alternate Interlock
Wiring Diagram.
Low Voltage Controller
Legend:
Force Air System
Field Installed Low Voltage
Thermostat
WARNING: Always disconnect the unit prior to making any connections. Failure to disconnecting the power could result in electrical shock or can damage the electronic boards, wall controls and/or unit.
CAUTION: Minimum wire requirements is LVT18 CSA/UL 4 strain to insure proper connection.
10
9. maintenance
caution: ALWAYS UNPLUG the ventilation
system DURING SERVICING.
1. Slide out the filters.
LCH 30-700 Series (4 filters)
LCH 70-1200 Series (6 filters)
Filters
Four times a year or as needed, vacuum the filters. Replace filters
once a year.
Heat Recovery Core Unit
(Aluminum and/or Polypropylene) Once a year or as needed, vacuum
the four (4) surfaces, let soak in warm water for three hours, then
spray rinse and let dry.
2. Vacuum the filters.
Energy Recovery Core Unit
(Enthalpy) Once a year or as needed, vacuum the four (4) surfaces.
Inside the Unit
Once a year or as needed, clean the interior of the unit (walls and
drain pan) with a mild and non abrasive soap. It is recommended to
use products that are environmentally-friendly.
3. Slide out core.
LCH 30-700 Series (2 cores)
LCH 70-1200 Series (3 cores)
Drain Line & Connections
The drain line and connections should be check at a regular basis.
10. Troublshooting
Peace of Mind
Ensure your comfort in the years to come by
using Imperial systems and accessories to
install any ventilation or filtration product.
Need help? You benefit from certified
customer service ready to guide you in the
installation or operation of your system.
PROBLEMS
SOLUTIONS
• HRV or ERV not running
• Verify breaker in electrical box
• Verify that dehumidistat or switch on HRV or ERV are
activated to supply power to unit.
• Unplug HRV or ERV verify if controller is wired
correctly to the connection box on the side of the unit.
• Verify low voltage box (DuotrolTM)on the unit
• Increase humidity level on dehumidistat.
• Switch ventilation mode from continuous to
intermittent
• Install a Greentek humidifier
• Reduce the humidity level on the controller.
• Verify if dryer is venting in basement.
• Verify if heating wood is stored in basement.
• Wait for outside temperature to change.
Ex. Summer can be extremely humid.
• Verify balancing of the HRV or ERV.
• Air is too dry
Call Toll free: 1-888-724-5211 “Our team is certified
and ready to assist you”
•Air too humid
11
Imperial Air Technologies
480 Ferdinand Blvd., Dieppe, NB E1A 6V9
1-888-724-5211 Fax 506 388-4633
www.imperialgroup.ca