Carrier HRVXXSVU1157 Instruction manual

Heat Recovery Ventilator
HRVXXSVU1157
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings and cautions
included in literature and attached to the unit. Consult local
building codes and the current edition of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
A11189
HRVXXSVU1157
on
Recognize safety information. When you see this symbol
the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand the signal words DANGER,
WARNING, and CAUTION. These words are used with the
safety--alert symbol. DANGER identifies the most serious hazards,
which will result in severe personal injury or death. WARNING
signifies hazards, which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may result
in minor personal injury or product and property damage. NOTE
is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
INTRODUCTION
The Heat Recovery Ventilator (HRV) is used to exchange indoor
stale air with outside fresh air. The HRV unit is equipped with a
special heat recovery core which transfers sensible heat between
the fresh incoming air and stale exhaust air.
It is required to locate the HRV in a conditioned space. Special
attention should be given to condensate drain, duct application,
balancing the HRV, and locating unit for easy access and routine
maintenance. The cross--flow design core allows entering and
leaving air streams to transfer heat energy without mixing.
LOCATION
Inspect Equipment
Move carton to final installation location. Remove the HRV from
carton taking care not to damage unit. Remove all packaging and
inspect unit for damage. Remove parts bag from inside unit. File
claim with shipping company if shipment is damaged or
incomplete.
!
WARNING
HRV
PERSONAL INJURY, ELECTRIC
PROPERTY DAMAGE HAZARD
SHOCK
!
OR
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
1. To avoid premature clogged filters, turn OFF the unit
during construction or renovation.
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.
4. Intended for residential installation only in accordance
with the requirements of NFPA 90B (for a unit installed
in USA) or Part 9 of the National Building Code of
Canada (for a unit installed in Canada).
5. Do not run any air ducts directly above or closer than
2--ft (0.61 m) to any 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
not closer than 9--ft 10--in (3 m) from this plenum connection to the furnace.
6. The ductwork is intended to be installed in compliance
with all applicable codes.
7. When leaving the house for a long period of time (more
than two weeks), a responsible person should regularly
check if the unit operates adequately.
8. If the ductwork passes through an unconditioned space
(e.g.: attic), the ducts must be insulated, and the unit must
operate continuously except when performing maintenance and/or repair. Also, the ambient temperature of the
house should never drop below 18_C (65_F).
Failure to follow this warning could result in personal injury
or death and property damage.
1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer
at the address or telephone number listed in the warranty.
2. We recommend that your unit be inspected by a specialized technician once a year.
3. Before servicing or cleaning the unit, disconnect power
cord from electrical outlet.
4. This unit is not designed to provide combustion and/or
dilution air for fuel--burning appliances.
5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
6. Do not use the units with any solid--state speed control
device other than the corresponding ones listed in Table
1.
7. This unit must be grounded. The power supply cord has a
3--prong grounding plug for your personal safety. It must
be plugged into a mating 3--prong grounding receptacle,
grounded in accordance with the national electrical code
and local codes and ordinances. Do not remove the
ground prong. Do not use an extension cord.
8. Do not install in a cooking area or connect directly to any
appliances.
9. Do not use to exhaust hazardous or explosive materials
and vapors.
10. When performing installation, servicing or cleaning these
units, it is recommended to wear safety glasses and
gloves.
11. Due to the weight of the unit, two installers are recommended to perform installation.
12. When applicable local regulations comprise 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.
Table 1 – Solid State Speed Control Device
UNIT
CONTROL
One Touch main wall control
Standard main wall control
HRVXXSUV11157
Basic main wall control
20 minute timer
60 minute crank timer
2
TECHNICAL DATA
Air Distribution
Stale air
from building
Fresh air
from outside
Stale Air
to outside
Stale air
from building
Filtered air
to building
HRV
Fresh air
to building
A11190
A11191
Fig. 1 -- Normal Operation
Fig. 2 -- Defrost or Recirculation
Defrost Cycles
HRVXXSVU1157
Outside Temperature
Defrost Cycles (Minutes)
Extended Defrost Cycles ( Minutes)
_C
Defrosting
Operation Between
Each Defrost Cycle
Defrosting
Operation Between
Each Defrost Cycle
23
--5
7
25
9
23
14
--10
7
25
9
23
--17
--27
10
22
10
22
_F
In a cold region (outside temperature ---17_F [---27_C] and lower), it may be necessary to setup EXTENDED DEFROST. See page 10.
23 9/16”
(599 mm)
2 ¹/16”
(53 mm)
3 13/16”
(97 mm)
24 9/16”
(624 mm)
7 7/16”
(189 mm)
22 ½”
(572 mm)
14 1/16”
(358 mm)
NOTE: Every port fits 6” round duct.
18 ¼”
(464 mm)
14 15/16”
(380 mm)
A11192
Fig. 3 -- Dimensions HRVXXSVU1157
3
TYPICAL INSTALLATIONS
Use the following illustrations as guidelines to help you decide on
how the unit will be installed. All the units should be hung from
the joists.
If required, bathroom fans and a range hood may be used to
exhaust stale air. Also, for homes with more than one level, we
recommend one exhaust register at the highest level.
There are 3 installation methods: Fully ducted, Central Draw Point
and Simplified Installation.
NOTE: An electrical outlet has to be available within 3--ft of the
unit.
Simplified Installation (Connection to a forced air
system.)
Stale air is exhausted to the outside. Fresh air from outside is
filtered and supplied to the return (plenum) or the supply duct of
the forced air unit. See Fig. 6.
To avoid cross--contamination and achieve the highest efficiencies,
the forced air system blower must always be ON.
NOTE: Homes with multiple forced air systems should have one
unit on each system.
HRV
Fully Ducted System (Primarily for homes with
radiant hot water or electric baseboard heat.)
Stale air coming from the registers located at the highest level of
the house is exhausted to the outside. Fresh air from outside is
filtered and supplied by the register located in the lowest liveable
level.
Homes with more than one level require at least one exhaust
register at the highest level.
See Fig. 4.
A11195
Fig. 6 -- Simplified Installation
INSTALLATION
Inspect the contents of the box
Inspect the exterior of the unit for shipping damage. Ensure that
there is no damage to the door, ports, power cord, etc.
Unit Door
A11193
Fig. 4 -- Fully ducted system
Central Draw Point (Connection to a forced air
system.)
Stale air coming from the registers located at the highest level of
the house is exhausted to the outside. Fresh air from outside is
filtered and supplied to the return (plenum) or the supply duct of
the forced air unit. See Fig. 5.
For this type of installation, it is not essential that the forced air
system blower runs when the unit is in operation, but it is
recommended.
NOTE: Home with multiple forced air systems should have one
unit on each system.
HRVXXSVU1157 has one door. The unit door can be relocated on
the back of the unit. This can be helpful to optimize duct
configuration while keeping access for unit maintenance. To
change door location, follow these steps (see Fig. 7):
A. Remove both door lower mechanical screws no. 8--32 x 1--in
(1) and set aside.
B. Open (2) and lift out the door (3).
To remove unit back panel, repeat steps A and B, but instead of
removing 2 mechanical screws, there are 4 metal screws to be
removed. Hang the door to the back of the unit and secure it by
tightening its both lower mechanical screws. Hang back panel to
the front of the unit and secure it by tightening its four metal
screws.
A
B
3
2
1
A11196
A11194
Fig. 7 -- Hanging the door
Fig. 5 -- Central Draw Point
4
Choose an appropriate location for the unit.
S Within an area of the house where the ambient temperature is
between 50_F (10_C) and 122_F (50_C) (basement, furnace
room, closet, etc.).
S Away from living areas (dining room, living room, bedroom), if
possible.
S So as to provide easy access to the interior of the unit, for
maintenance.
S Close to an exterior wall, so as to limit the length of the insulated
flexible duct to and from the unit.
S Away from hot chimneys and other fire hazards.
S Allow for a power source (standard 3--prong grounding outlet).
S Close to a drain. If no drain is close by, use a pail to collect
run--off.
Hang the unit with the four chains and springs provided. See Fig.
8.
S If the house has two floors or more, be sure to plan for at least
one exhaust register on the highest lived--in level.
Calculating duct size
Use Table 2 to ensure that the ducts you intend to install will be
carrying air flows at or under the recommended values. Avoid
installing ducts that will have to carry air flows near the maximum
values and never install a duct if its air flow exceeds the maximum
value.
NOTE: Examples below use imperial units. The same calculation
applies to metric units.
A. Example of calculation:
Problem: The installation requires two exhaust registers (one
for the kitchen, and the other for the bathroom). The registers
are connected to a main duct which will connect to the unit
(high speed performance value of 140 cfm). What size of duct
should be used for the main exhaust duct and for both end
branches leading to the registers? (See Fig. 9.)
Solution: Simplified method. (For a more detailed method of
calculating duct size, refer to the ASHRAE or HRAI HANDBOOK.)
Main duct: Table indicates for a 6--in ∅ duct: recommended air
flow: 120 cfm, maximum air flow: 180 cfm. The 140 cfm high
speed air flow is close enough to the recommended value (120)
and far away enough from the maximum value (180). Therefore, a 6--in ∅ duct or larger is an appropriate choice for the
main exhaust duct.
End branches: Each end branch will have to transport a 70 cfm
air flow (140 divided by 2). Table 2 indicates for a 5--in ∅
duct: recommended air flow: 75 cfm; maximum air flow: 110
cfm. The high speed air flow of 70 cfm is close enough to the
recommended value (75) and far away enough from the maximum value (110). Therefore, a 5--in ∅ duct or larger is an appropriate choice for both end branches.
NOTE: A 4--in ∅ duct would have been too small because the
maximum acceptable value for a 4--in ∅ duct is 60 cfm.
End
branches
5-in ∅,
70 cfm
A11197
Fig. 8 -- Chain spring installation
!
CAUTION
Main branch
6-in ∅, 140 cfm
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Make sure the unit is level.
Planning of the ductwork
S Keep it simple. Plan for a minimum of bends and joints.
S Keep the length of insulated ducts to a minimum.
S Do not ventilate crawl spaces or cold rooms. Do not attempt to
recover the exhaust air from a dryer or a range hood. This would
cause clogging of the filters and recovery module.
A11199
Fig. 9 -- Main exhaust leading to registers
B. Fig. 10 is an example of a design for a fully ducted system
with a unit having a high speed performance of 140 cfm.
Table 2 – Ductwork Sizing Table
DUCT DIAMETER
RECOMMENDED AIR FLOW
MAXIMUM AIR FLOW
4 inch (102 mm) round
40 CFM (19 L/S or 68 M3/H)
60 CFM (28 L/S or 102 M3/H)
5 inch (127 mm) round
75 CFM (35 L/S or 127 M3/H)
110 CFM (52 L/S or 187 M3/H)
6 inch (152 mm) round
M3/H)
180 CFM (85 L/S or 306 M3/H)
120 CFM (57 L/S or 204
5
HRV
Locating the unit
4-in
4-in
4-in
4-in
4-in
4-in ∅,
47 cfm
4-in ∅,
46 cfm
4-in
4-in
5-in
5-in ∅,
93 cfm
5-in ∅,
67 cfm
4-in ∅,
24 cfm
4-in ∅,
37 cfm
5-in ∅,
74 cfm
5-in ∅,
62 cfm
5-in
5-in
5-in
6-in
6-in ∅,
160 cfm
5-in ∅,
86 cfm
6-in ∅,
160 cfm
HRV
A11198
Fig. 10 -- Fully ducted system
Installing the ductwork and registers
!
Fully ducted system (see Fig. 4)
!
WARNING
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in property damage.
When performing duct connections, always use approved tools
and materials. Respect all corresponding laws and safety
regulations. Please refer to your local building code.
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in property damage.
Never install a stale air exhaust register in a closed room where
combustion device operates, such as a gas furnace, a gas water
heater or a fireplace.
!
Stale air exhaust ductwork
S Install the stale air exhaust registers where the contaminants are
produced: kitchen, living room, etc. Position the registers as far
from the stairway as possible and in such a way that the air
circulates in all the lived--in spaces in the house.
S If a register is installed in the kitchen, it must be located at least 4
feet (1.2 m) from the range.
S Install the registers 6 to 12 inches (152 to 305 mm) from the
ceiling on an interior wall OR install them in the ceiling.
S If possible, measure the velocity of the air flowing through the
registers. If the velocity is higher than 400--ft/min (122 m/min),
then the register type is too small. Replace with a larger one.
Fresh air distribution ductwork
S Install the fresh air distribution registers in bedrooms, dining
rooms, living room and basement.
S Keep in mind that the fresh air registers must be located as far as
possible from the stale air registers.
S Install the registers either in the ceiling or high on the walls with
air flow directed towards the ceiling. (The cooler air will then
cross the upper part of the room and mix with room air, before
descending to occupant’s level.)
S If a register must be floor installed, direct the airflow up the wall.
WARNING
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
When performing duct connections to the furnace supply duct,
this duct must be sized to support the additional airflow
produced by the unit. Also, the use of metal duct is highly
recommended.
Fresh air distribution ductwork
There are 2 methods for connecting the unit to the furnace/air
handler:
Method 1: Supply side connection
S Cut an opening into the furnace supply duct at least 18--in (0.5
m) from the furnace/air handler.
S Connect this opening to the Fresh air distribution port of the
unit (use metal duct, see Fig. 11).
Metal duct
Minimum 18-in
(0.5m)
Central Draw Point System (see Fig. 5)
Stale air exhaust ductwork
Same as for Fully Ducted System described above.
A11200
Fig. 11 -- Main supply leading to registers
6
Stale air intake
S Cut an opening into the furnace/air handler return duct not less
than 10--ft (3.1 m) from the furnace/air handler (see Fig. 13)
S Connect this opening to the Exhaust air from building port of
the unit.
Method 2: Return side connection
S Cut an opening into the furnace return duct not less than 10--ft
(3.1 m) from the furnace/air handler (A+B).
S Connect this opening to the Fresh air distribution port of the
unit (see Fig. 12).
NOTE: For Method 2, it is not essential that the furnace/air
handler runs when the unit is operation, but we recommend it. If
desired, interlock (synchronize) the furnace/air handler blower
operation (see page 11, ELECTRICAL CONNECTION TO
FURNACE).
Minimum 18-in
(0.5 m)
Metal duct
B
A
A
HRV
S Make sure the unit duct forms an elbow inside the furnace/air
handler ductwork.
S If desired, interlock (synchronize) the furnace/air handler blower
operation (see page 11, ELECTRICAL CONNECTION TO
FURNACE).
A+B = Not less
than 10-ft (3.1 m)
A11202
Fig. 13 -- Method 1: Supply--return connection
Fresh air distribution
S Same instructions as for Method 1 or Method 2.
For Method 2 (Return--return), make sure there is a distance of at
least 3--ft (0.9 m) between the 2 connections to the furnace/air
handler. See Fig. 14.
B
A+B=Not less
than 10-ft (3.1m)
A11201
A
Fig. 12 -- Return side connection
Simplified installation
!
B
WARNING
Minimum 3-ft
(0.9 m)
A+B = Not less
than 10-ft (3.1 m)
PROPERTY DAMAGE HAZARD
A11203
Fig. 14 -- Method 2: Return--return connection
Failure to follow this warning could result in property damage.
When performing duct connections, always use approved tools
and materials. Respect all corresponding laws and safety
regulations. Please refer to your local building code.
!
CAUTION
PROPERTY DAMAGE HAZARD
!
Failure to follow this caution may result in property damage.
CAUTION
If using Method 2, make sure the furnace/air handler blower
operation is synchronized with the unit operation. See page
11, ELECTRICAL CONNECTION TO THE FURNACE.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
When performing duct connections to the furnace supply duct,
this duct must be sized to support the additional airflow
produced by the unit. Also, the use of metal duct is highly
recommended. For a Return--Return installation, the furnace
blower must be in operation when the unit is in operation.
NOTE: For Method 1, it is not essential to synchronize the
furnace blower operation with the unit operation, but it is
recommended.
There are 2 methods for connecting the unit to the furnace/air
handler.
7
Connecting the ducts to the unit
barrier using the port strap (included in unit parts bag). To
do so, insert one collar pin through vapor barrier and first
strap hole, then insert the other collar pin through vapor barrier and center strap hole and close the loop by inserting the
first collar pin in the last strap hole.
Insulated flexible ducts
Use the following procedure to connect the insulated flexible ducts
to the ports of the unit (Exhaust air to outside and Fresh air from
outside ports).
!
!
CAUTION
PROPERTY DAMAGE HAZARD
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Failure to follow this caution may result in property damage.
Make sure the vapor barrier on the insulated ducts does not
tear during installation to avoid condensation within the ducts.
If ducts have to go through an unconditioned space (e.g.:
attic), always use insulated ducts.
HRV
CAUTION
1. Pull back the insulation to expose the flexible duct.
2. Attach the flexible duct to the port using tie wrap.
3. Pull the insulation over the joint and tuck in between the
inner and outer rings of the double collar.
4. Pull down the vapor barrier (shaded part in Fig. 15) over the
outer ring to cover it completely. Fasten in place the vapor
Non--insulated rigid ducts
Use metal screws and duct tape to connect the rigid ducts to the
unit ports.
Non--insulated flexible ducts
Use tie wraps to connect the flexible ducts to the unit ports.
2
1
4
3
Collar pin
Collar pin
A11204
Fig. 15 -- Ductwork installation
Non-insulated rigid ducts
Non-insulated flexible ducts
A11205
Fig. 16 -- Ductwork installation
8
INSTALLING TWO EXTERIOR HOODS
Choose an appropriate location to install the exterior hoods:
S There must be a minimum distance of 6--ft (1.8 m) between the
hoods to avoid cross--contamination
S There must be a minimum distance of 18--in (457 mm) from the
ground
Make a water trap loop in the tube to prevent the unit from drawing
unpleasant odors from the drain source. Make sure this loop is
located OVER the “T” as shown. Run the tube to the floor drain or
to an alternative drain pipe or pail.
IMPORTANT: If using a pail to collect water, locate the tube end
approximately 1--in (25 mm) from the top of the pail in order to
prevent water from being drawn back up into the unit.
Make sure the intake hood is at least 6 feet (1.8 m) away from the
following:
S Dryer exhaust, high efficiency furnace vent, central vacuum vent
S Gas meter exhaust, gas barbecue grill
S Any exhaust from a combustion source
S Garbage bin and any other sources of contamination
Refer to figure beside for connecting insulated ducts to the exterior
hoods. An “Anti--gust intake hood’’ should be installed in regions
where a lot of snow is expected to fall.
HRV
± 1”
Exhaust hood
A11209
Intake hood
18-in
(457 mm)
Fig. 19 -- Drain connection
6-ft
(1.8 m)
CONTROLS
6-ft
(1.8 m)
This unit is equipped with an integrated control located under the
unit, on the recessed side of electrical compartment. Plug the unit.
Unit booting sequence
Optional
duct location
18-in
(457 mm)
Tape and duct tie
A11206
Fig. 17 -- Exterior hoods
The unit booting sequence is similar to a personal computer boot
sequence. Each time the unit is plugged in after being unplugged,
or after a power failure, the unit will perform a 30--second booting
sequence before starting to operate.
During the booting sequence, the integrated control LED will light
GREEN (unit set in normal defrost) or AMBER (unit set in
extended defrost) for 5 seconds, and then will shut off for 2
seconds. After that, the LED will light RED for the rest of the
booting sequence. During this RED light phase, the unit is
checking and resetting the motorized damper position. Once the
motorized damper position completely set, the RED light turns off
and the booting sequence is done.
NOTE: No command will be taken until the unit is fully booted.
Integrated control
Connecting the drain
Cut 2 sections of the plastic tube, at least 16--in (406 mm) long,
and attach them to each inner drain fitting, located under the unit.
Join both short sections to the “T” junction and main tube as
shown in Fig. 18.
Use the push button (1) to control the unit. The LED (2) will then
show on which mode the unit is in. See Fig. 20.
2
1
16"
(406 mm)
16"
(406 mm)
Bottom of the unit
A11210
Fig. 20 -- Integrated control
A11208
Fig. 18 -- Drain connection
Refer to Table 3 to see how to operate the unit using its integrated
control.
9
Table 3 – Integrated control
PRESS ON PUSH
BUTTON
LED COLOR
RESULTS
Once
Amber
Unit is on low speed
Twice
Green
Unit is on high
speed
Three Times
No Light
Unit is Off
Use the terminal connector included in the installation kit to
perform the electrical connection for main and optional wall
controls. Check if all wires are correctly inserted in their
corresponding holes in the terminal block. (A wire is correctly
inserted when its orange receptacle is lower than another one
without wire. See Fig. 21, wire A is correctly inserted, but wire B is
not.)
1
If a problem occurs during the unit operation, its integrated control
LED (2) will blink. The color of the blinking light depends on the
type of error detected. Refer to Troubleshooting on page 15 for
further details.
NOTE: When using main control, the integrated control must be
turned off.
2
HRV
Setting extended defrost
These units are factory set to normal defrost. In cold region
(outside temperature --17_F [--27_C] and lower), it may be
necessary to setup extended defrost. During the first 2 seconds of
booting sequence, while the integrated control LED is GREEN,
press on push button for 3 seconds to set the unit in extended
defrost; the LED will blink AMBER to show the unit is in
extended defrost mode. After that, the LED will shut off, then light
RED (the unit returns in its booting sequence).
B
A
A11211
Fig. 21 -- Terminal connector
Electrical connection to main controls
For more convenience, this unit can also be controlled using an
optional main wall control.
NOTES:
1. The integrated control must be turned OFF to use an optional main control.
2. If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control.
!
NO C NC I OC OL Y R G B
Y
WARNING
G B
Main wall control
One Touch - Rear view
OC
G B
A11212
Fig. 22 -- Electrical connection to One touch
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
Always disconnect the unit before making any connections.
Failure in disconnecting power could result in electrical shock
or damage of the wall control or electronic module inside the
unit.
!
NO C NC I OC OL Y R G B
CAUTION
PROPERTY DAMAGE HAZARD
A11213
Fig. 23 -- Electrical connection to main wall control
Failure to follow this caution may result in property damage.
Never install more than one optional main wall control per
unit. Make sure that the wires do not short--circuit between
themselves or by touching any other components on the wall
control. Avoid poor wiring connections. To reduce electrical
interference (noise) potential, do not run wall control wiring
next to control contactors or near light dimming circuits,
electrical motors, dwelling/building power or lighting wiring,
or power distribution panel.
10
DEHUMIDISTAT or
HUMIDITY CONTROL
(OPTIONAL)
20-MINUTE
60-MINUTE
PUSH-BUTTON SWITCHES
CRANK TIMER
(5 MAXIMUM)
HRV
NO C NC I OC OL Y R G B
A11214
Fig. 24 -- Electrical connection to dehumidistat, 20--minute lighted push button timer or 60--minute crank timer
NOTE: If an optional auxiliary control is activated and then, the
Dehumidistat (or Humidity Control) is being activated, the
Dehumidistat (or Humidity Control) will override the auxiliary
control commands.
Once the control(s) connections have been made, insert the
terminal connector on the recessed side of electrical compartment.
See Fig. 25.
NOTE: For information about the operation of the wall controls,
refer to the user guide.
ELECTRICAL CONNECTION TO THE
FURNACE
WARNING
!
Terminal
connector
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
Never connect a 120--volt AC circuit to the terminals of the
furnace interlock (standard wiring). Only use the low voltage
class 2 circuit of the furnace blower control
Bottom of the unit
A11219
Fig. 25 -- Terminal connector
For a furnace connected to a cooling system:
On some older thermostats, energizing the “R” and “G” terminals
at the furnace has the effect of energizing “Y” at the thermostat and
thereby turning on the cooling system. If you identify this type of
thermostat, you must use the ALTERNATE FURNACE
INTERLOCK WIRING. See Fig. 26.
Standard furnace interlock wiring
THERMOSTAT
TERMINALS
FOUR
WIRES
TWO WIRES
heating only
W
R
G
W
4 WIRES
G
Y
THERMOSTAT
TERMINAL
2 WIRES
heating only
wiring
nuts
W
RR
NO
NC
G
C
C
C
YY
Y
FURNACE
24-VOLT
TERMINAL BLOCK
R
UNIT TERMINAL CONNECTOR
Y
NO C NC I OC OL Y R G B
G
UNIT TERMINAL CONNECTOR
R
NO C NC I OC OL Y R G B
W
Alternate furnace interlock wiring
FURNACE
24-VOLT
TERMINAL BLOCK
TWO WIRES
2 WIRES
COOLING SYSTEM
COOLING SYSTEM
A11215
Fig. 26 -- Electrical connection to furnace
11
G
B
B
B
B
B
B
BN
BN
BL
BL
Ref
1
J9
MED HI
3 2 1
54321
J8
W
G
B
2
1 See note413 2 1
2 1
1
2
F1 J10
3
1
2
3
2
1
BN
Y
Y BN
24 V
class 2
9.5 V
class 2
120 V, 60 Hz W1
J4
J7
J6
J5
nc
nc
P 83 V
BL
R 68 V
62 V
neutral W
B
T1
J11
REF 1 ORG
3 2 1
ORG to ORG
ORG to ORG RED to RED
REF2
3 2 1
REF 1 RED
RED to RED
Factory shipped
J1
R1
Override
switch
(optional; see
notes 3 & 4)
B GR Y
Field wiring
remote control
(see notes 3 & 4)
t˚
Defrost
temperature sensor
DAMPER
ELECTRONIC ASSEMBLY
140
MED-HI (100V) & LO (62V)
HI
LO
120 V
100 V
83 V
68 V
62 V
neutral
R
MED
BL
MED-LO
P
O
MED-HI
B
Ref
1
24 V
class 2
9.5 V
class 2
R
O
Fig. 27 -- HRVXXSVU1157 wiring diagram
160
CFM MAX
COLOR CODE
B
BLACK
BL
BLUE
BN
BROWN
G
GREEN
O
ORANGE
P
PURPLE
R
RED
W
WHITE
Y
YELLOW
nc
no connection
Line voltage factory wiring
Class 2 low voltage factory wiring
Class 2 low voltage field wiring
ELECTRONIC
Furnace blower interlock
ASSEMBLY A1
J14-1: NO
J14-2: COM
J14-3: nc
(optional; see notes 3 & 5)
HI (120V) & LO (62V)
FAN SPEEDS
21
A2
10
9
J13 8
7
6
5
ICP
4
J12
3
2
12345
1
Ref
J14
2
12
J2
12
54321
J3
FAN MOTORS SPEED SELECTION
CAUTION: You can change REF 1 or REF 2, but not both at the
same time. If you do change REF 1 and REF 2 you
will inverse fan motor speeds.
Supply fan
M2
motor
Exhaust fan
motor M1
Exhaust fan
motor C1
capacitor
Supply fan
motor C2
capacitor
G
O
120 V
100 V
B
Damper motor
M3
B
NOTES
1. Use specified UL listed/CSA Certified line fuse.
2. If any of the original wire, as supplied, must
be replaced, use the same equivalent wire.
3. Field wiring must comply with applicable
codes, ordinances and regulations.
4. Remote controls (class 2 circuit) available,
see instruction manual.
5. Furnace fan circuit must be class 2 circuit only.
WIRING DIAGRAM
JU1
Critical characteristic.
JU1
JU1
12
J8-5
J8-1
J8-2
J8-4
J9-4
J9-1
J9-2
J9-3
F1
CPU
K2
1 23
K3
K1
K5
K4
K2
JU1
J10-2 HI MED
120 V, 60Hz
Line
J11-2
J11-1
J12-5
J12-4
K4 J12-3
J12-2
J12-1
K3
K1
Ref
2
LOGIC DIAGRAM
J5-2
J2-5
J2-4
J2-3
J2-2
J2-1
J6-2
J6-1
J14-4
J14-5
J14-6
J14-7
J14-8
J14-9
J14-10
J14-2
J14-1
J14-3
J3-2
J3-1
A2
Override
switch
(optional; see
notes 3, 4)
Field wiring
remote
control (see
notes 3, 4)
Furnace
blower
interlock
(optional; see
notes 3, 5)
Damper motor
Supply fan motor
capacitor
J4-2
Supply fan motor
J4-1
J4-3
Exhaust fan motor
capacitor
J7-2
J7-1
K5
J10-1
Exhaust fan motor
J5-1
J5-3
A1
120V, 60Hz
Neutral
A11216
BALANCING THE UNIT
1. Set the unit to high speed.
NOTE: Make sure that the furnace/air handler blower is
ON if the installation is in any way connected to the ductwork of the cold air return. If not, leave furnace/air handler
blower OFF. If the outside temperature is below 0_C/32_F,
make sure the unit is not running in defrost while balancing.
(By waiting 10 minutes after plugging the unit in, you are
assured that the unit is not in a defrost cycle.)
2. Place the magnehelic gauge on a level surface and adjust it
to zero.
3. Connect tubing from gauge to EXHAUST air flow pressure
taps (the ones with arrows, see insets in illustration beside).
Be sure to connect the tubes to their appropriate high/low
fittings. If the gauge drops below zero, reverse the tubing
connections.
4. Note the CFM value from balancing chart located on unit.
5. Repeat steps 3 and 4, but to FRESH air flow pressure taps.
6. Match highest CFM value to lowest by adjusting the balancing damper corresponding to the highest value.
What you need to balance the unit
S A magnehelic gauge capable of measuring 0 to 1 inch of water
(0 to 249 Pa) and 2 plastic tubes.
S The balancing chart of the unit.
A11217
Fig. 28 -- Magnehelic gauge
Preliminary stages to balance the unit
Stale air flow
S Seal all the unit ductwork with tape. Close all windows and
doors.
S Turn off all exhaust devices such as range hood, dryer and
bathroom fans.
S Make sure the balancing dampers are fully open by setting both
damper balancing tools completely vertical.
S Make sure all filters are clean (if it is not the first time the unit is
balanced).
Fresh air flow
A11220
Fig. 30 -- Balancing procedure
A11218
Fig. 29 -- Damper balancing tool
7. Secure both dampers in place with a fastening screw (included).
8. Write the required air flow information on a label and stick
it near the unit for future reference (date, maximum speed
air flows, your name, phone number and business address).
NOTES:
1. Use conversion chart provided with the unit to convert magnehelic gauge readings to equivalent cfm values.
2. The unit is considered balanced even if there is a difference
of ±10 cfm (or ± 5 l/s or 17 m3/h) between the two air
flows.
13
HRV
Balancing procedure
SERVICE PARTS
2
HRV
6
1
3
4
5
7
8
8
13
9
12
11
10
A11223
Fig. 31 -- Parts
ITEM
QTY
HRVXXSVU1157
1
Oval Port
DESCRIPTION
2
18206
2
Double Collar Oval Port
2
18207
3
Exhaust Damper Spring
1
18221
4
Motor Assembly
2
18197
5
Balancing Tool
2
18220
6
Defrost Damper
1
18200
7
Damper System Assembly (including Item 6)
1
18199
8
Core Filter
2
18204
9
Heat Recovery Core
1
18203
10
Door Assembly
1
19341
11
PCB
1
19342
12
Transformer
1
18219
13
Capacitor 5 F
2
16042
14
Thermistor Kit (not shown)
1
15749
15
Hardware Kit (not shown)
1
08304
16
PCB Connector (not shown)
1
16416
14
7
The integrated control push button does not work.
The 30--- second boot sequence is not
completed.
15
See Unit Booting Sequence, page 9.
HRV
If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the table below to know where the
problem occurs on the unit.
ERROR TYPE
ACTION
UNIT STATUS
LED flashes GREEN
Thermistor error
Replace thermistor
Unit works but will defrost frequently
LED flashes AMBER
Damper error
Go to point 6
Unit does not work
LED flashes RED
Motor error
Go to point 9
Unit does not work
Problems
Possible causes
You should try this
The circuit board may be defective.
Unplug the unit. Disconnect the main control and the op1 Unit does not work.
tional(s) controls(s) (if need be). Jump G and B terminals.
Plug the unit back and wait about 10 seconds. If the motors
run on high speed and the damper opens, the circuit board
is not defective.
The fuse may be defective.
Check if fuse F1 is blown. In that case, replace fuse F1 as
per product nameplate.
2 The damper actuator does not
The damper actuator or the integrated Unplug the unit. Disconnect the main control and the opwork.
damper mechanism may be defective. tional controls(s) (if need be). Wait 10 seconds and plug
the unit back. Check if the damper opens. If not, use a
multimeter and check for 24 V AC on J12--- 1 and J12--- 2 (in
electrical compartment). If there is 24 VAC, replace the entire damper assembly.
NOTE: It is normal to experience a small delay (7--- 8
seconds) before detecting the 24 V AC signal at start--- up.
This signal will stay during 17--- 18 seconds before disappearing.
The circuit board or the transformer
If there is no 24 V AC, check for 24V AC between J8--- 1 and
may be defective.
J8--- 2. If there is 24V AC, replace the circuit board, and if
there is no 24V AC, change the transformer.
The wires may be in reverse position.
Ensure that the color coded wires have been connected to
3 The wall control does not work.
their appropriate places.
The wires may be broken.
Inspect every wire and replace any that are damaged.
The wire in the wall OR the wall conRemove the wall control and test it right beside the unit
trol may be defective.
using another shorter wire. If the wall control works there,
change the wire. If it does not, change the wall control.
The wires may be in reverse position.
Ensure that the color coded wires have been connected to
4 The Dehumidistat (or Humidity
their appropriate places.
control) does not work OR the
20--- minute push button timer
The Dehumidistat (or Humidity conJump the OL and OC terminals. If the unit switch to high
does not work OR its indicator
trol) or push button may be defective. speed, remove the Dehumidistat or push button and test it
light does not stay on.
right beside the unit using another shorter wire. If it works
here, change the wire. If it doesn’t, change the Dehumidistat or the push button.
Check if fuse F1 is blown. In that case, replace fuse F1 as
5 The supply and/or exhaust motor The fuse may be defective.
per product nameplate.
do not work.
The jumper JU1 may be in wrong po- Make sure that jumper is properly located as per wiring
sition or missing.
diagram on page 12.
Jumper J11 may be missing.
Make sure there is a jumper on connector J11.
The circuit board or transformer may
NOTE: Refer to the FAN MOTOR SPEED SELECTION table
be detective.
of the wiring diagram on page 12 to know what the voltage
reading must be. Press on the integrated control push button until the unit turn on low speed (the LED will light AMBER). Using a multimeter, check the voltage on J4--- 1 and
J4--- 2 (for supply motor), and on J5--- 1 and J5--- 2 (for exhaust motor). Then set the unit on high speed by pressing
on the integrated control push button one more time (the
LED will light GREEN). Using a multimeter, check the
voltage on J4--- 1 and J4--- 2 (for supply motor), and on
J5--- 1 and J5--- 2 (for exhaust motor). If all the readings correspond to the right voltage values, the circuit board is not
defective. If one or both readings are different, change the
transformer. If no voltage is present, change the circuit
board.
The motor(s) or capacitor(s) may be
Using a multimeter, check the ohms value on each motor
defective
connectors. For BLUE and BLACK motor wires, the right
value is ± 49 ohms. For BLUE and BROWN motor wires, the
right value is ± 79 ohms. For BROWN and BLACK motor
wires, the right value is ± 126 ohms. If the ohms values are
the same, the motor is not defective. Replace the motor
capacitor.
6 The defrost cycle does not work
Ice deposits may be hindering the
Remove the ice.
(the fresh air duct is frozen) OR
damper operation.
the fresh air distributed is very
The damper rod or the port damper
Inspect these parts and replace if necessary.
cold.
itself may be broken.
The damper actuator or circuit board
See point 2.
may be defective.
See Table 4, Temperature/Ohm Relationship, for valid temperature
range when connected to an outside air thermistor.
HRV
Table 4 – Temperature/Ohm Relationship
TEMP 〈°F/°C)
30/--- 1
32/0
34/1
36/2
38/4
40/5
42/6
44/7
46/8
48/9
50/10
52/11
54/12
56/14
58/15
60/16
62/17
64/18
66/19
68/20
70/21
72/22
74/24
76/25
78/26
80/27
82/28
84/29
86/30
88/31
90/32
92/33
94/34
96/35
98/36
100/38
102/39
104/40
106/41
108/42
110/43
112/44
114/46
116/47
118/48
120/49
OHMS
34,480
32,630
30,760
29,220
27,470
26,020
24,680
23,320
22,070
20,910
19,830
18,820
17,870
16,920
16,160
15,260
14,530
13,790
13,090
12,480
11,860
11,270
10,750
10,250
9,750
9,300
8,840
8,432
8,042
7,668
7,310
6,993
6,661
6,368
6,085
5,811
5,571
5,313
5,088
4,869
4,660
4,450
4,268
4,019
3,918
3,750
These products earned the
ENERGY STAR® by meeting strict
energy efficiency guidelines set by
Natural Resources Canada and
the US EPA. They meet ENERGY
STAR requirements only when
used in Canada.
2011 CAC / BDP D 7310 W. Morris St. D Indianapolis, IN 46231
Catalog No: IM---HRV ---01
Edition Date: 05/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
16
Replaces: NEW