INSTALLATION INSTRUCTIONS
HRV90H AND ERV90HC
Model no.: HRV90HT
Model no.: HRV90HS
(HRV with ports on top)
(HRV with ports on sides)
VB0082
VB0081
Model no.: ERV90HCT
(ERV with ports on top)
Model no.: ERV90HCS
(ERV with ports on sides)
VB0080
VB0079
RESIDENTIAL USE ONLY
READ AND SAVE THESE INSTRUCTIONS
06010C rev. E
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TABLE OF CONTENTS
1.0
TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
AIR DISTRIBUTION (NORMAL OPERATION) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
AIR DISTRIBUTION (RECIRCULATION OR DEFROST MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
PERFORMANCE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
CONTROLS AND LINKAGE POSSIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1
1.2
1.3
1.4
1.5
1.6
2.0
TYPICAL INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
FULLY DUCTED SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
CENTRAL DRAW POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SIMPLIFIED INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
INSTALLATION FOR ERV UNITS ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1
2.2
2.3
2.4
3.0
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-16
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
INSPECT THE CONTENT OF THE BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
LOCATING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
UNIT PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
HOW TO HANG THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PLANNING OF THE DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
INSTALLING THE DUCTWORK AND REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12
CONNECTING THE DUCT TO THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
INSTALLING THE TANDEM® TRANSITION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-15
INSTALLING 2 EXTERIOR HOODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.0
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-19
INTEGRATED CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-18
VT4W OPTIONAL MAIN WALL CONTROL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
OPTIONAL AUXILIARY WALL CONTROLS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.1
4.2
4.3
4.4
5.0
ELECTRICAL CONNECTION TO THE FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
BALANCING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
CONNECTING THE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-24
BIANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-24
ANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.0
7.0
8.0
9.0
9.1
9.2
10.0
11.0
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
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1. TECHNICAL DATA
1.1 AIR DISTRIBUTION (NORMAL OPERATION)
HRV
ERV
EXHAUST AIR-
FROM BUILDING
EXHAUST AIR
FROM BUILDING
FRESH AIR
FROM OUTSIDE
FRESH AIR
FROM OUTSIDE
FRESH AIR
TO BUILDING
FRESH AIR
TO BUILDING
EXHAUST AIR
TO OUTSIDE
EXHAUST AIR
TO OUTSIDE
VF0039
VF0038
1.2 AIR DISTRIBUTION (RECIRCULATION OR DEFROST MODE)
HRV
ERV
EXHAUST AIR-
FROM BUILDING
EXHAUST AIR-
FROM BUILDING
FILTERED AIR
TO BUILDING
FILTERED AIR
TO BUILDING
VF0037
VF0036
Outside Temperature
HRV and ERV Defrost Cycles
Celcius (°C)
Defrosting (min.)
Operation time (min.)
Fahrenheit (°F)
between each defrost cycle
-5 to -27
-27 and less
9
10
23
22
23 to -17
-17 and less
1.3 SPECIFICATIONS
Model
HRV
ERV
Weight
Oval Ports
Drain Diameter
Installation
Motor Speeds
Electrical supply
Power Consumption
42 lb (19 kg)
Fit 5” (127 mm) ducts
1/2” (12 mm)
Chains, springs and hooks (provided with the unit).
High and low speed
45 lb (20.4 kg)
Fit 5” (127 mm) ducts
N/A
120 V, 60 Hz
150 watts
120 V, 60 Hz
160 watts
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1. TECHNICAL DATA (CONT’D)
1.4 PERFORMANCE CHARTS
1.4.1 HRV UNITS
Ventilation Performance
Energy Performance
SUPPLY
POWER SENSIBLE APPARENTLATENTRECOVERY/
CONSUMEDRECOVERY SENSIBLEMOISTURE
WATTS EFFICIENCY EFFECTIVENESSTRANSFER
EXT STATIC
PRESSURE
NET SUPPLY
AIR FLOW
GROSS AIR FLOW
SUPPLY EXHAUST
CT°EMPERATFU°RE
HEATING
l/s NET AcIRfmFLOW m3/h
Pa
in.w.g.
l/s
52
50
48
45
43
41
38
35
cfm
110
106
101
96
m3/h
l/s
52
50
48
46
43
41
38
36
cfm
110
106
102
97
m3/h
187
180
173
166
155
148
137
130
l/s
58
55
53
50
49
45
43
40
cfm
122
116
113
107
103
96
m3/h
205
198
191
180
173
162
155
144
0
0
0
+32
+32
+32
23
30
44
48
63
93
82
108
157
68
82
116
66
65
59
78
76
68
0.07
0.04
0.04
25
.1
187
180
173
162
155
148
137
126
50
.2
75
.3
100
125
150
175
200
.4
.5
.6
.7
-25
-13
30
63
108
110
55
81
0.08
92
87
92
87
COOLING
TOTAL RECOVERY EFFICIENCY
Not tested
-
+35
+95
-
-
-
-
-
-
81
75
81
91
.8
76
85
NOTE: ALL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
1.4.2 ERV UNITS
Ventilation Performance
Energy Performance
SUPPLY
POWER SENSIBLE APPARENT LATENTRECOVERY/
CONSUMEDRECOVERY SENSIBLEMOISTURE
WATTS EFFICIENCYEFFECTIVENESSTRANSFER
EXT STATIC
PRESSURE
NET SUPPLY
AIR FLOW
GROSS AIR FLOW
SUPPLY EXHAUST
CT°EMPERATFU°RE
HEATING
l/s NET AcIRfmFLOW m3/h
Pa
in.w.g.
l/s
55
53
50
49
46
44
42
39
cfm
116
113
107
104
98
m3/h
l/s
56
55
52
50
48
46
43
40
cfm
119
116
111
107
101
97
m3/h
202
197
189
182
172
165
155
143
l/s
59
57
54
53
50
47
45
42
cfm
125
121
115
112
105
100
95
m3/h
212
206
195
190
178
170
161
153
0
0
0
+32
+32
+32
22
30
45
46
64
91
79
108
155
70
85
127
67
65
61
82
77
73
0.60
0.54
0.49
25
.1
197
192
182
177
166
160
150
139
50
.2
75
.3
100
125
150
175
200
.4
.5
.6
.7
-25
-13
30
64
108
102
56
78
0.50
TOTAL RECOVERY EFFICIENCY
49
COOLING
94
88
68
+35
+95
23
-
46
-
166
-
91
.8
82
84
90
NOTE: ALL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
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1. TECHNICAL DATA (CONT’D)
1.5 DIMENSIONS
1.5.1 DIMENSIONS FOR PORTS ON SIDES UNITS
HRV
27 1 16” (688 mm)
22 9 16” (574 mm)
191316” (503 mm)
4’’ (102 mm)
12 3 16”
(310 mm)
13¾”
(349 mm)
6’’ (152 mm)
2” (51 mm)
ERV
VK0055
27 1 16” (688 mm)
22 9 16” (574 mm)
191316” (503 mm)
4’’ (102 mm)
12 3 16”
(310 mm)
6’’ (152 mm)
2” (51 mm)
VK0057
1.5.2 DIMENSIONS FOR PORTS ON TOP UNITS
HRV
ERV
4’’ (102 mm)
4’’ (102 mm)
191316”
(503 mm)
191316”
(503 mm)
6’’ (152 mm)
6’’ (152 mm)
22 9 16” (574 mm)
23 ¾” (603 mm)
22 9 16” (574 mm)
23 ¾” (603 mm)
2½”
(64 mm)
2½”
(64 mm)
16 ¼”
(413 mm)
12 3 16”
(310 mm)
12 3 16”
(310 mm)
VK0058
VK0056
1.6 CONTROLS AND LINKAGE POSSIBILITY
MAIN CONTROL
AUXILIARY CONTROLS
LINKAGE POSSIBILITY
• VT4W
• 20-MINUTE PUSH BUTTON TIMER
• 60-MINUTE CRANK TIMER
• HUMIDITY CONTROL
• AIR HANDLER INTERLOCK
(USED WITH FORCED AIR SYSTEM)
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2. TYPICAL INSTALLATIONS
Installations may vary according to the type of unit and the ports configuration (top or sides). 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.
In every case, bathroom fans and a range hood should 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 feet of the unit.
2.1 FULLY DUCTED SYSTEM (PRIMARILY FOR HOMES WITH RADIANT HOT WATER OR ELECTRIC BASEBOARD HEATING.)
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 figure at right.
VH0055
2.2 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 figure
at right.
For this type of installation, it is not essential that the forced air system
blower runs when the unit is in operation, but we recommend it.
NOTE: Home with multiple forced air systems should have one unit on
each system.
VH0056
2.3 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
figure at right.
NOTE: It is possible to connect the outside fresh air duct to the supply
duct of the forced air unit.To do so, the Automatic fresh air bypass
must be used (part #: 15391). (See installation sheet included with
the Automatic fresh air bypass).
To avoid cross-contamination and achieve the highest efficiencies, the
Automatic fresh air bypass (part #15391) must be installed. If not, the
forced air system blower must always be ON.
NOTE: Home with multiple forced air systems should have one unit on
each system.
VH0057
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2. TYPICAL INSTALLATIONS (CONT’D)
2.4 INSTALLATION FOR ERV UNITS ONLY
2.4.1 GEOGRAPHICAL LOCATION
The ERV units are created to meet specific requirements related to geographical locations. Take a look at the map below; the shaded
area shows the limits where the ERV unit can be installed. However, there is no geographical limitation for installing an HRV unit.
YELLOWKNIFE
HAY RIVER
WHITEHORSE
FORT SMITH
ANCHORAGE
JUNEAU
FORT MCMURRAY
GRANDE PRAIRIE
EDMONTON
Prince Rupert
GOOSE BAY
LABRADOR CITY
JASPER
PRINCE ALBERT
SASKATOON
REGINA
KAMLOOPS
CALGARY
PENTICTON
SEPT-ILES
GASPÉ
WINNIPEG
CHIBOUGAMAU
CHICOUTIMI
VAL-DOR
LETHBRIDGE
TIMMINS
VICTORIA
MATANE
BATHURST
QUEBEC
HELENA
SUDBURY
SAULT STE MARIE
OLYMPIA
CHARLOTTETOWN
ST JOHN’S
HALIFAX
BISMARCK
NORTH BAY
OTTAWA
TORONTO
MONTRÉAL
ST. PAUL
ST-JOHN
SALEM
MADISON
BOISE
DETROIT
BOSTON
HARTFORD
DES MOINES
SALT LAKE CITY
HARRISBURG
INDIANAPOLIS
COLUMBUS
WASHINGTON
DENVER
RENO
SACRAMENTO
SPRINGFIELD
TOPEKA
NASHVILLE
RALEIGH
COLUMBIA
SANTA FE
OKLAHOMA CITY
ATLANTA
PHOENIX
BATON ROUGE
AUSTIN
VN0006
NOTE:The ERV unit is designed to assist in the management of humidity introduced into the home.
During cooling season, in extreme humidity conditions, the use of additional dehumidification unit may be required to quickly
remove all excess moisture. During heating season, in extreme dryness conditions, the use of a humidifier may be required if
the indoor air is still too dry.
2.4.2 ERV UNITS ATTIC INSTALLATION
All 3 types of installations can be used in the attic (Fully ducted system, Central Draw Point or Simplified). The example shown below is
a Simplified installation (connection to a forced air system).
CAUTION
Due to the potential temperature difference between the attic and the rest of the house, all unit ducts must be insulated.
CAUTION
The attic temperature must always be above 0°C (32°F).
Stale air is exhausted to the outside. Fresh air from outside is filtered
and supplied to the return (plenum) of the forced air unit. See figure
at right.
NOTE: It is possible to connect the outside fresh air duct to the supply
duct of the forced air unit. To do so, the Automatic fresh air
bypass must be used (part #: 15205). (See installation sheet
included with the Automatic fresh air bypass).
To avoid cross-contamination and achieve the highest efficiencies, the
Automatic fresh air bypass (part #15205) must be installed. If not, the
VH0058
forced air system blower must always be ON.
NOTE: Home with multiple forced air systems should have 1 unit on each system.
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3. INSTALLATION
3.1 INSPECT THE CONTENTS OF THE BOX
• Inspect the exterior of the unit for shipping damage. Ensure that there is no damage to the door, door latches, power cord, etc.
• Remove and discard the 2 transport brackets (A) and open the door. Discard the styrofoam
fillers (ERV units only) and remove the hardware kit from the unit. Inspect the interior of the unit
for damage. Ensure that heat or energy recovery core, core filters, insulation, dampers, etc. are
all intact.
A
VD0183
3.2 LOCATING THE UNIT
Choose an appropriate location for the unit.
• Within an area of the house where the ambient temperature is between 10°C (50°F) and 65°C (149°F) (basement, furnace room,
closet, etc.).
• So as to provide easy access to the interior of the unit, for maintenance.
• Close to an exterior wall, so as to limit the length of the insulated flexible duct to and from the unit.
• Away from hot chimneys and other fire hazards.
• Allow for a power source (standard 3-prong grounding outlet).
• For HRV units ONLY: Close to a drain. If no drain is close by, use a pail to collect run-off.
3.3 UNIT PREPARATION
A
Both HRV and ERV units are equipped with 2 ports having integrated balancing damper. Turn the thumb
screw (A) clockwise to manually open and adjust the damper (B).
HRV UNITS: Set the Fresh air to building port to wide open position, and adjust the Exhaust air to outside
B
port to 3rd notch.
NOTE: If the unit need to be balanced, adjust the damper of the Exhaust air to outside port to wide open
position. See Section 7.
ERV UNITS: Set both Fresh air to building port and Exhaust air to outside port to wide open position.
VJ0032
Port with integrated balancing
damper - Top view
The door latches location can be changed from sides to front of the unit, according to the installation needs.
VD0176
Latches on sides of the unit
Latches in front of the unit
To do so, turn the unit upside down. Open the latches an unscrew them from the unit. Install the latches on their new locations.
VO0094
VO0090
VO0089
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3. INSTALLATION (CONT’D)
3.4 HOW TO HANG THE UNIT
Hang the unit with the 4 chains, hooks and springs
provided.
VD0185
VD0184
CAUTION
Make sure the unit is level.
3.5 PLANNING OF THE DUCTWORK
• Keep it simple. Plan for a minimum of bends and joints.
• Keep the length of insulated ducts to a minimum.
• 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.
• If the house has two floors or more, be sure to plan for at least one exhaust register on the highest lived-in level.
3.6 INSTALLING THE DUCTWORK AND REGISTERS
!
0
WARNING
Never install a stale air exhaust register in a closed room where a combustion device operates, such as a gas furnace, a gas
water heater or a fireplace.
3.6.1 FULLY DUCTED SYSTEM (AS ILLUSTRATED IN SECTION 2.1)
Stale air exhaust ductwork
• 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.
• If a register is installed in the kitchen, it must be located at least 4 feet (1.2 m) from the range.
• Install the registers 6 to 12 inches (152 to 305 mm) from the ceiling on an interior wall OR install them in the ceiling.
Fresh air distribution ductwork
• Install the fresh air distribution registers in bedrooms, dining rooms, living room and basement.
• Keep in mind that the fresh air registers must be located as far as possible from the stale air registers.
• Install the registers in the ceiling OR 6 to 12 inches (152 to 305 mm) from the ceiling on an interior wall. The duct lenght should be
at least 15’ (4.6 m). (The fresh air will then flow through the room and mix with room air, ensuring a continuous renewed airflow.)
• If a register must be floor installed, direct the airflow up the wall.
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3. INSTALLATION (CONT’D)
3.6 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
3.6.2 CENTRAL DRAW POINT SYSTEM (AS ILLUSTRATED IN SECTION 2.2)
Stale air exhaust ductwork
Same as for Fully Ducted System, described on point 3.6.1.
Fresh air distribution ductwork
!
0
WARNING
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
When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow
produced by the HRV/ERV. Also, use a steel duct. It is recommended that the HRV/ERV is running when the furnace is in
operation to prevent backdrafting inside HRV/ERV.
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply side connection
• Cut an opening into the furnace supply duct at least 18 inches (0.5 m) from the
furnace/air handler.
MINIMUM 18”
(0.5 M)
• Connect this opening to the Fresh air to building port of the HRV/ERV (use steel
duct, see figure beside).
STEEL DUCT
• Make sure the HRV/ERV duct form an elbow inside the furnace/air handler ductwork.
• If desired, interlock (synchronize) the furnace/air handler blower operation (see
Section 5).
VJ0036
Method 2: Return side connection
• Cut an opening into the furnace return duct not less than 10 feet (3.1 m) from the
A
furnace/air handler (A+B).
• Connect this opening to the Fresh air to building port of the HRV/ERV
(see figure beside).
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 Section 5).
B
A+B= NOT LESS
THAN 10’ (3.1 M)
VJ0035
- 11 -
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3. INSTALLATION (CONT’D)
3.6 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
3.6.3 SIMPLIFIED INSTALLATION (AS ILLUSTRATED IN SECTION 2.3)
!
0
WARNING
When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety
regulations. Please refer to your local building code.
CAUTION
When performing duct connections to the furnace supply duct, unless using the optional Automatic fresh air bypass
(part #15391), this duct must be sized to support the additional airflow produced by the HRV/ERV. Also, use a steel duct. For a
Return-Return installation, installing the optional Automatic fresh air bypass (part #15391) eliminates the obligation to operate
the furnace blower when the HRV/ERV is in operation.
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply-return connection
Method 2A: Return-return without
Automatic fresh air bypass
Method 2B: Return-return with
Automatic fresh air bypass
AUTOMATIC FRESH
AIR BYPASS
A
B
A+B= NOT LESS
THAN 10’ (3.1 M)
MINIMUM 18”
(0.5 M)
A
STEEL DUCT
MINIMUM 3’
B
(0.9 M)
A
C
B
A+B= NOT LESS
THAN 10’ (3.1 M)
VJ0034
VJ0038
DISTANCE A: MINIMUM 3’ (0.9 M)
B+C= NOT LESS THAN 10’(3.1 M)
VJ0037
Stale air intake
• Cut an opening into the furnace/air handler return duct not less than 10 feet (3.1 m) from the furnace/air handler (A+B).
• Connect this opening to the Exhaust air from building port of the HRV/ERV.
Fresh air distribution
• Same instructions as for Method 1 or Method 2, Section 3.6.2.
For Method 2 (Return-return), make sure there is a distance of at least 3 feet (0.9 m) between the 2 connections to the furnace/air
handler.
NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the unit operation, but we recommend it.
CAUTION
If using Method 2, unless the optional Automatic fresh air bypass (part #15391) is installed, make sure the furnace/air handler
blower operation is synchronized with the unit operation! See Section 5.
- 12 -
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3. INSTALLATION (CONT’D)
3.7 CONNECTING THE DUCTS TO THE UNIT
Insulated flexible ducts
Use the following procedure for connecting the insulated flexible ducts to the port of the unit (Exhaust air to outside and Fresh air from
outside ports).
CAUTION
Make sure the balancing dampers are set to their appropriate position before connecting the ducts to the ports. See Section 3.3.
VJ0042
VJ0043
VJ0041
VJ0039
VJ0040
Apply duct tape to the
joint making an airtight
seal.Avoid compressing
the insulation when
pulling the tape tightly
around the joint.
Compressed insulation
loses its R value and
causes water dripping
due to condensation
on the exterior surface
of the duct.
Pull the insulation
over the joint and
tuck in between the
inner and outer rings
of the double collar.
Pull back the insulation to
expose the flexible duct.
Attach the flexible
duct to the port using
tie wrap.
Pull the vapor barrier
over the insulation
and over the outer
ring of the double collar.
CAUTION
Make sure the vapor
barrier
on
the
insulated
ducts
does not tear during
installation to avoid
condensation within
the ducts.
Rigid ducts
CAUTION
Do not use screws to connect the rigid ducts to the ports.
Use a small length of flexible duct to connect the rigid duct to the ports in order to avoid vibration transmissions. Use tie-wraps to
perform connections.
3.8 INSTALLING THE TANDEM® TRANSITION KIT
Use the following procedure for connecting the insulated flexible ducts to the Tandem® transition* (Exhaust air to outside and Fresh air
from outside).
9 3/4"
248 mm
NOTE: The joist opening needed to install the Tandem® tansition must be
9 3/4” (248 mm) minimum. Also, the maximum height of the Tandem®
transition is 8 3/4” (222 mm). See Tandem® transition end view beside.
If the joist are perpendicular to the ducts, or if the connection to the exterior
hood is in a limited area, your installation will need two exterior hoods
instead of one. In this case, do not use the Tandem® transition kit. See
8 3/4"
222 mm
next Section 3.9 INSTALLING 2 EXTERIOR HOODS.
*Patent pending.
VD0118
- 13 -
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3. INSTALLATION (CONT’D)
3.8 INSTALLING THE TANDEM® TRANSITION KIT (CONT’D)
3.8.1 CONNECTION TO TANDEM® TRANSITION
1. For each duct, pull back the insulation to expose the interior flexible duct.
2. Connect the interior flexible duct to the smaller part of the Tandem® transition (5’’ oval) using a tie wrap.
3. Pull the insulation over the joint. Pull the vapor barrier over the insulation.
4. Apply duct tape gently to the joint in order to make an airtight seal. See figures below.
EXHAUST AIR TO OUTSIDE
DUCT ON TOP
1
2
VJ0022
VJ0025
3
4
VJ0023
VJ0024
3.8.2 ASSEMBLING DUAL EXTERIOR HOOD*
Exterior dual hood is coming in separate parts. Using 2 #8 x 3¼4” screws, assemble the top
metal screen and the plastic grille to the dual exterior hood. Then, slide the bottom metal
screen to the dual exterior hood. See illustration beside.
*Patent pending
VO0024
3.8.3 LOCATING THE DUAL EXTERIOR HOOD
The dual exterior hood must be installed at a minimum distance of 18 inches (457 mm) from the
ground. See illustration beside.
18''
(457 mm)
!
010
WARNING
Make sure this hood is at least 3 feet (0.9 m) away from any of the following:
• High efficiency furnace vent. • Any exhaust from a combustion source.
• Gas meter exhaust, gas barbecue-grill. • Garbage bin and any other source of contamination.
VD0083
3.8.4 CONNECTING TANDEM® TRANSITION TO THE DUAL EXTERIOR HOOD
1
1. Using a jig saw, cut a 6’’ diameter hole in the exterior wall and insert the Tandem®
transition through this hole.
VD0084
1) Exhaust air to outside duct
CAUTION
The Tandem® transition must be inserted in such a way that the Exhaust air to outside duct will be located on the top.
- 14 -
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3. INSTALLATION (CONT’D)
3.8 INSTALLING THE TANDEM® TRANSITION KIT (CONT’D)
3.8.4 CONNECTING TANDEM® TRANSITION TO THE DUAL EXTERIOR HOOD (CONT’D)
Xmas tree pin
2. Join the end of the Tandem® transition to the rear of the exterior backplate. Secure
with 2 Xmas tree pins and seal properly with duct tape.
VD0085
CAUTION
The exterior backplate must be installed with the word «TOP» pointing upward.
3. Using 4 #8 x 11¼2” screws, mount the the exterior backplate to the exterior wall. Seal the
outline with caulking.
VD0086
4. Snap the assembled exterior hood on its backplate and secure with 2 provided screws
(#8 x 3¼4” long).
VD0087
screw
- 15 -
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3. INSTALLATION (CONT’D)
3.9 INSTALLING 2 EXTERIOR HOODS
Choose an appropriate location to install the exterior hoods:
• There must be a minimum distance of 6 feet (1.8 m) between the hoods to avoid cross-contamination
• There must be a minimum distance of 18 inches (457 mm) from the ground
Make sure the intake hood is at least 6 feet (1.8 m) away from the following:
• Dryer exhaust, high efficiency furnace vent, central vacuum vent
• Gas meter exhaust, gas barbecue grill
• Any exhaust from a combustion source
• Garbage bin and any other sources of contamination
Refer to figure below 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.
6’’ Ø
EXHAUST HOOD
(152 MM)
INTAKE HOOD
18’’
(457 MM)
6’
(1.8 M)
18’’
(457 MM)
6’
(1.8 M)
18’’
(457 MM)
OPTIONAL
DUCT LOCATION
TAPE AND DUCT TIE
VD0028
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4. CONTROLS
4.1 INTEGRATED CONTROL
WARNING
AVERTISSEMENT
Risk of electric shock. Before performing
any maintenance or servicing, always
disconnect the unit from its power source.
Danger d’électrocution. Débranchez
toujours l’appareil avant d’entreprendre
des travaux d’entretien ou de réparation.
CAUTION
ATTENTION
Unscrew both screws to open the electrical Dévisser les deux vis pour ouvrir le compartiment
compartment.To completely remove, detach électrique. Pour retirer complètement, le
from its retention wire inside.
détacher de son fil de rétention intérieur.
All units are equipped with an integrated control, located under the unit, in front of the electrical
compartment. Use the push button (1) to control the unit. The LED (2) will then shows on
which mode the unit is in.
No light
OFF or remote controled
LOW speed
HIGH speed
See User Manual
Arrêté ou contrôlé
par contrôle mural
Basse vitesse
Amber light
Green ligh
Blinking light
Sans lumière
Lumière ambre
Lumière verte
Clignotant
Haute vitesse
Voir guide d’utilisation
VD0182
1 2
Refer to table below to see how to operate the unit using its integrated control.
PRESS ON PUSH BUTTON
LED COLOR
RESULTS
ONCE
TWICE
THREE TIMES
AMBER
GREEN
NO LIGHT
UNIT IS ON LOW SPEED
UNIT IS ON HIGH SPEED
UNIT IS OFF
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 Section 11 Troubleshooting on last page for further details.
4.1.1 BOOT SEQUENCE
The unit boot sequence is similar to a personnal computer boot sequence. Each times the unit is plugged 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 or AMBER 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.
4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL 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.
!
0
WARNING
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.
CAUTION
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.
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. On picture beside, wire A is
correctly inserted, but not wire B.)
A
B
VE0106
- 17 -
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4. CONTROLS (CONT’D)
4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS (CONT’D)
4.2.1 ELECTRICAL CONNECTION TO VT4W MAIN WALL CONTROL
MAIN WALL
CONTROL VT4W
REAR VIEW
NO C NC
I
OC OL
Y
R
G
B
G
B
OC
G
B
Y
VE0101A
4.2.2 ELECTRICAL CONNECTION TO OPTIONAL AUXILIARY WALL CONTROLS
60-MINUTE
CRANK TIMER
20-MINUTED LIGHTED PUSH BUTTON
(5 MAXIMUM)
HUMIDITY CONTROL
T
I
A
M
I
D
I
T
Y
%
NOTE: If another optional auxiliary wall control
is activated when the Humidity Control
20%
HUMIDITY
CONTROL
25%
70%
30%
60%
NO C NC I O C OL Y
R
G
B
50%
40%
is installed, this control will override
the Humidity Control commands.
VE0110A
Once the wall control(s) connections have been made, insert the terminal connector in the bottom of the unit, on the electrical
compartment front face.
WARNING
AVERTISSEMENT
Risk of electric shock. Before performing
any maintenance or servicing, always
disconnect the unit from its power source.
Danger d’électrocution. Débranchez
toujours l’appareil avant d’entreprendre
des travaux d’entretien ou de réparation.
CAUTION
ATTENTION
Unscrew both screws to open the electrical Dévisser les deux vis pour ouvrir le compartiment
compartment.To completely remove, detach électrique. Pour retirer complètement, le
from its retention wire inside.
détacher de son fil de rétention intérieur.
No light
OFF or remote controled
Amber light
Green ligh
Blinking light
Sans lumière
LOW speed
HIGH speed
See User Manual
Arrêté ou contrôlé
par contrôle mural
Basse vitesse
TERMINAL
CONNECTOR
Lumière ambre
Lumière verte
Clignotant
Haute vitesse
Voir guide d’utilisation
VD0182
4.3 VT4W OPTIONAL MAIN WALL CONTROL OPERATION
MODE
COLOR
SUGGESTED USE
GREEN INTERMITTENT
SELECT THIS MODE WHEN YOU ARE AWAY FROM THE HOUSE
FOR A FEW DAYS. ALSO, WHEN YOU DEEM THE INSIDE AIR IS
TOO DRY IN HEATING SEASON, OR TOO HUMID DURING
COOLING SEASON. IN THIS MODE, THE UNIT IS OFF FOR
40 MINUTES PER HOUR AND VENTILATES AT MINIMUM SPEED
THE REMAINING 20 MINUTES OF THE HOUR.
MAX
MIN
INTERMITTENT
VT4W
YELLOW MIN SPEED
VENTILATION
FOR NORMAL DAILY OPERATION.
RED
MAX SPEED
VENTILATION
FOR EXCESS POLLUTANTS AND HUMIDITY
(PARTIES, ODORS, SMOKE, ETC.).
VC0070
- 18 -
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4. CONTROLS (CONT’D)
4.4 OPTIONAL AUXILIARY WALL CONTROLS OPERATION
4.4.1 20-MINUTE LIGHTED PUSH-BUTTON TIMER
ON
Set the push-button timer to ON. The fan motors will then operate at high speed for 20 minutes and the indicator
will light up.
To stop activation, push one time; the unit will then get back to previous selection.
VC0084
4.4.2 60-MINUTE CRANK TIMER
TURN
PAST
20
OFF
10
20
This control makes the system operate at high speed for periods varying from 10 to 60 minutes.
30
60
40
50
VC0017
4.4.3 HUMIDITY CONTROL
Setting during the fall, winter and spring months:
Adjust knob to the desired maximum humidity level.
H
I
T
A
U
M
I
D
I
T
Y
%
20%
25%
HUMIDITY
CONTROL
70%
Setting during summer:
30%
60%
Adjust knob to the OFF positon.
50%
40%
CAUTION
Do not select a humidity level below 30%. This could lead to excessive dryness in the air
causing discomfort for the occupants.
VC0085
5. ELECTRICAL CONNECTION TO THE FURNACE
!
0
WARNING
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.
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.
STANDARD FURNACE INTERLOCK WIRING
ALTERNATE FURNACE INTERLOCK WIRING
THERMOSTAT
TERMINAL
W
R
G
Y
THERMOSTAT
TERMINALS
4 WIRES
W
R
G
Y
FOUR
WIRES
2 WIRES
heating only
TWO WIRES
heating only
wiring
nuts
W
NO
NC
W
R
R
G
C
G
C
C
Y
Y
Y
FURNACE
24-VOLT
TERMINAL BLOCK
FURNACE
24-VOLT
TERMINAL BLOCK
2 WIRES
TWO WIRES
COOLING SYSTEM
COOLING SYSTEM
VE0108A
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6. WIRING DIAGRAM
!
WARNING
Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
- 20 -
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7. BALANCING THE UNIT
To avoid balancing, the difference between stale air ducts total lenght and fresh air ducts total lenght must not exceed 50 ft. However,
even if the stale air ducts and fresh air ducts lenghts are almost equal, your local building codes may require balancing the unit.
If the unit does not need to be balanced, shut all the pressure taps (located on the unit door) with the small plastic plugs included in the
hardware kit.
7.1 WHAT YOU NEED TO BALANCE THE UNIT
•
A magnehelic gauge capable of measuring 0 to 0.5 inch of water (0 to 125 Pa) and
2 plastic tubes.
•
The balancing chart located on the unit door.
7.2 PRELIMINARY STAGES TO BALANCE THE UNIT
VP0009
•
•
•
Seal all the unit ductwork with tape. Close all windows and doors.
Turn off all exhaust devices such as range hood, dryer and bathroom fans.
Make sure the integrated balancing dampers are fully open. Turn the thumb screw (A) clockwise
to manually open the dampers. Both are located on the Exhaust air to outside port and on Fresh
air to building port.
A
•
Make sure all filters are clean (if it is not the first time you balance the unit).
VJ0032
Port with integrated balancing
damper - Top view
7.3 BALANCING PROCEDURE
1. Set the unit to high speed.
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.).
Balancing
Chart
Fresh air flow
1
1
3
1
1
3
12 12 11
12 12 11
13 33 23
12 12 11
12 12 11
13 33 23
2. Place the magnehelic gauge on a level surface and adjust it to zero.
Exhaust air flow
3. Connect tubing from gauge to EXHAUST air flow pressure taps (see diagram beside).
Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops below
zero, reverse the tubing connections.
NOTE: It is suggested to start with the exhaust air flow reading because the exhaust has
typically more restriction than the fresh air, especially in cases of fully ducted
installations or source point ventilation. Place the magnehelic gauge upright and
level. Record equivalent AIR FLOW of the reading according to the balancing chart.
VP0015
4. Move tubing to FRESH air flow pressure taps (see diagram). Adjust the fresh air balancing damper until the fresh air flow is
approximately the same as the EXHAUST air flow. If fresh air flow is less than exhaust air flow, then go back and adjust the exhaust
balancing damper to equal the fresh air flow.
5. Secure both dampers thumb screw in place with tape.
6. 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).
NOTE: 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.
- 21 -
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8. CONNECTING THE DRAIN (HRV UNITS ONLY)
A
VD0181
From the inner side of the unit door, using the
provided drain tube, punch out both drain
holes (A).
VO0091
In order to keep the drain pan intact, hand
tighten the 2 plastic drain fittings to the unit
door using the gaskets and nuts as shown.
Tie-wrap
VO0092
To drain
VO0093
Cut 2 sections of plastic tubing, about 12”
(305 mm) long and attach them to each
drain fitting. Join the 2 short sections to the
«T» junction and main tube as shown.
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
situated BELOW the «T» as shown. This will
prevent water from being drawn back up into
the unit in case of negative pressure. Run
the tube to the floor drain or to an alternative
drain pipe or pail. Be sure there is a slight
slope for the run-off.
- 22 -
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9. MAINTENANCE
!
WARNING
Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
Since this guide covers both HRV and ERV units, top and side ports, the illustrations shown in the maintenance procedures are typical.
The following procedures applies for both HRV and ERV units.
Refer to pictures below to identify the inner parts of your unit.
3
3
3
3
4
4
2
2
2
2
1
1
VB0078
VB0077
1) ERV core
2) Core retainers
3) Foam filter brackets
4) Foam core filters
1) HRV core
2) Core retainers
3) Foam filter brackets
4) Foam core filters
9.1SEMI-ANNUAL MAINTENANCE
1. Unplug the unit.
VD0005
!
WARNING
Be careful before opening the door; water or small debris could fall out. For HRV unit, always wait one minute after
disconnecting the unit before opening the door in order to allow water to drain out from the unit.
2. Unlatch the door and open it. Clean the inner side of the door with a damp cloth, then wipe with a dry
one. Disengage the door from its hinge by sliding it from left to right and set aside.
VD0179
!
WARNING
Always hold the core when rotating the 2 core retainers; failure to do so will cause the core to fall out.
1
1
3. Lift both foam filters bracket (1) and remove the foam filters from the core. While holding
the core, rotate the 2 core retainers (2) and slide out the core from the unit.
2
VD0177
- 23 -
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9. MAINTENANCE (CONT’D)
9.1 SEMI-ANNUAL MAINTENANCE (CONT’D)
4. Clean the inside walls of the unit with a clean damp cloth, then wipe with a clean dry one.
5. Wash the 2 core filters under hot water with mild soap. Rinse thoroughly and let dry completely before reinstalling on the core.
6. Remove the dust on the core using a vacuum cleaner and a soft brush attachment.
!
WARNING
Once the core reinstalled in the unit, always rotate both core retainers to their initial position; failure to do so will cause the
core to fall out.
7. Slide the core in the unit. Secure the core by rotating both core retainers to their initial
positions.
VD0178
NOTE: Once the core reinstalled in the unit, the arrows (A) on its sticker label must be
pointing towards the unit motors.
A
VB0078
8. Reinstall both foam filters and secure them to the core by pulling down the 2 foam fil-
ter brackets. Reinstall the door.
9. Close the door and plug the unit.
NOTE: The unit will return to its previous setting after a 30-second delay for boot sequence.
9.2 ANNUAL MAINTENANCE
Do the same operations as the Semi-Annual Maintenance (Section 9.1).Then, clean the exterior hood(s).
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10. SERVICE PARTS
13
12
1
3
2
11
4
5
6
10
7
4
3
9
8
VL0019
ITEM DESCRIPTION
PART NUMBER
HRV90HS
HRV90HT
ERV90HCS
ERV90HCT
(PORTS ON SIDES) (PORTS ON TOP)(PORTS ON SIDES) (PORTS ON TOP)
1
2
3
4
OVAL PORT (FITS 5” DIAMETER DUCTS)
DOOR LATCH WITH SCREWS
OVAL PORT WITH INTEGRATED BALANCING DAMPER
MOTOR & WHEEL ASS’Y (MOTOR CAPACITOR INCLUDED)
CAPACITOR 5 µF
CAPACITOR 7.5 µF
ELECTRONIC BOARD
ERV FOAM FILTER
ERV CORE (WITH 2 FILTERS)
DRAIN CONNECTOR KIT
16040
16035
16041
16024
16042
16027
16038
16031
16037
03203
16096
16044
16032
16029
16567
1
2
2
2
2
2
1
N/A
N/A
1
1
2
2
2
2
2
1
N/A
N/A
1
1
2
2
2
2
2
1
2
1
N/A
1
N/A
N/A
1
1
2
2
2
2
2
1
2
1
N/A
1
N/A
N/A
1
5*
6
7
8
9
10 DOOR ASS’Y
11 HRV CORE (WITH 2 FILTERS)
12 HRV FOAM FILTER
13 MOTORIZED DAMPER PORT ASS’Y
14** TRANSFORMER
1
1
2
1
1
1
2
1
1
1
1
1
*PLEASE CHECK CAPACITOR VALUE SHOWN ON CAPACITOR LABEL BEFORE ORDERING.
** PART NOT SHOWN.
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11. TROUBLESHOOTING
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 on the unit the problem occurs.
LED flashes GREEN.
LED flashes AMBER.
LED flashes RED.
• Thermistor error.
• Damper error.
Replace the entire port assembly (fresh air from outside port).
Go to Point 6.
• The door is open and the unit is not unplugged. Close the door and press once on the integrated control
push button to reset the unit.
• Exhaust motor error.
Go to Point 5.
Problems
Possible causes
You should try this
1. Unit does not work.
•The circuit board may be defective.
•Unplug the unit. Disconnect the main
control and the auxiliary control(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.
NO C NC
I
OC OL
Y
R
G
B
VE0097
2. The damper actuator
does not work.
•The damper actuator or the integrated
•Unplug the unit. Disconnect the main control and the optional control(s)
damper port mechanism may be defective. (if need be).Wait 10 seconds and plug the unit back. Check if the damper
opens. If not, use a multimeter and check for 24V AC on J12-1 and J12-2
(in electrical compartment). If there is 24V AC, replace the entire port assembly.
NOTE: It is normal to experience a small delay (7-8 seconds) before
detecting the 24V AC signal at starting-up. This signal will stay
during 17-18 seconds before disappearing.
•The circuit board may be defective.
•The wires may be in reverse position.
•If there is no 24V AC, replace the circuit board.
3. The wall control does not
work OR the indicators flash.
•Ensure that the color coded wires have been connected to 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
control may be defective.
•Remove the wall control and test it right beside the unit using another
shorter wire. If the wall control works there, change the wire. If it does
not, change the wall control.
4. The Humidity Control does
•The wires may be in reverse position.
•Ensure that the color coded wires have been connected to their appropriate places.
not work OR the 20-minute
push-button timer does not
work OR its indicator light
does not stay on.
•The Humidity Control or push button
may be defective.
•Jump the OL and OC terminals. If the
unit switch to high speed, remove the
Humidity Control or push button and
test it right beside the unit using
beside the unit using another
shorter wire. If it works here, change
NO C NC
I
OC OL
Y
R
G
B
VE0098
the wire. If it doesn’t, change the Humidity Control or the push button.
5. The supply and/or exhaust
motor do not work.
•The circuit board may be defective.
•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). The reading must be 68 V AC. Then set the unit on high
speed by pressing on the integrated control 1 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). The
reading must be 120 V AC. 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 circuit board.
•The motor(s) may be defective.
•Using a multimeter, check the ohms value on each motor connectors. Black
motors values: For BLUE and BLACK motor wires, the right value is
55 ohms.For BLUE and BROWN motor wires, the right value is 35 ohms.
For BROWN and BLACK motor wires, the right value is 89 ohms.Aluminum
motors values: For BLUE and BLACK motor wires, the right value is 51 ohms.
For BLUE and BROWN motor wires, the right value is 47 ohms.For BROWN
and BLACK motor wires, the right value is 98 ohms. If the ohm 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 fresh air duct is frozen OR the damper operation.
the fresh air distributed
•Remove the ice.
is very cold.
•The damper rod or the port
damper itself may be broken.
•Inspect these parts and replace if necessary.
•See point 2.
•The damper actuator or circuit board
may be defective.
7. The integrated control
push button does not work.
•The 30-second boot sequence
is not completed.
• See Section 4.1.1 Boot Sequence
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