Broan ERV90HCT User Manual

INSTALLATION INSTRUCTIONS

HRV90H AND ERV90HC

RESIDENTIAL USE ONLY

READ AND SAVE THESE INSTRUCTIONS

06010C rev. G

Model no.: HRV90HT

(HRV with ports on top)

Model no.: HRV90HS

(HRV with ports on sides)

Model no.: ERV90HCT

(ERV with ports on top)

Model no.: ERV90HCS

(ERV with ports on sides)

VB0082

VB0080 VB0079

VB0081

ABOUT THIS MANUAL

Because of the large amount of models covered by this publication, the illustrations are typical ones. Some details of your unit may be slightly different than the ones shown.

Please take note that this manual uses the following symbols to emphasize particular information:

NOTE: Indicates supplementary information needed to fully complete an instruction. We welcome any suggestions you may have concerning this manual and/or the unit, and we would appreciate hearing your comments

on ways to better serve you. Please contact us by phone at 1-800-558-1711.

WARNING

Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.

CAUTION

Denotes an instruction which, if not followed, may severely damage the unit and/or its components.

- 2 -

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING:

1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or

telephone number listed in the warranty.

2. Before servicing or cleaning the unit, disconnect power cord from electrical outlet.

3. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.

4. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.

5. Do not use this unit with any solid-state speed control device other than main optional wall control VT4W, and no other optional

auxiliary wall controls than 60-minute crank timer and/or 20-minute lighted push button and/or Humidity Control.

6. 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.

7. Do not install this unit in a cooking area or connect directly to any appliances.

8. Do not use to exhaust hazardous or explosive materials and vapors.

9. When performing installation, servicing or cleaning these units, it is recommended to wear safety glasses and gloves.

10. Due to the weight of the unit, two installers are recommended to perform installation.

CAUTION

1. To avoid prematurate 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.

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 9’10” (3 m) from this plenum connection to the furnace.

6. The ductwork is intended to be installed in compliance with all local and national codes that are applicable.

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 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).

WARNING

ABOUT THESE UNITS LIMITATION

For residential (domestic) installation only. This unit must be installed in accordance with all national and local regulations, building codes and safety codes.

1. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

1.1 AIR DISTRIBUTION (NORMAL OPERATION) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.2 A

IR DISTRIBUTION (RECIRCULATION OR DEFROST MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.3 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.4 P

ERFORMANCE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.5 D

IMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.6 CONTROLS AND LINKAGE POSSIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2. TYPICAL INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

2.1 FULLY DUCTED SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7

2.2 CENTRAL DRAW POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.3 S

IMPLIFIED INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.4 I

NSTALLATION FOR ERV UNITS ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-16

3.1 INSPECT THE CONTENT OF THE BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.2 LOCATING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.3 U

NIT PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.4 HOW TO HANG THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.5 PLANNING OF THE DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.6 I

NSTALLING THE DUCTWORK AND REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12

3.7 CONNECTING THE DUCT TO THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.8 INSTALLING THE TANDEM® TRANSITION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-15

3.9 INSTALLING 2 EXTERIOR HOODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-19

4.1 INTEGRATED CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-18

4.3 VT4W OPTIONAL MAIN WALL CONTROL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4.4 O

PTIONAL AUXILIARY WALL CONTROLS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

5. ELECTRICAL CONNECTION TO THE FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

6. WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

7. B

ALANCING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

8. CONNECTING THE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

9. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-24

9.1 BIANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-24

9.2 ANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

10. SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

11. T

ROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

TABLE OF CONTENTS

- 3 -

HRV ERV

1. TECHNICAL DATA

1.1 AIR DISTRIBUTION (NORMAL OPERATION)

HRV ERV

1.2 A

IR DISTRIBUTION (RECIRCULATION OR DEFROST MODE)

Celcius (°C)

-5 to -27

-27 and less

Fahrenheit (°F)

23 to -17

-17 and less

Defrosting (min.)

Operation time (min.)

between each defrost cycle

23 22

Outside Temperature HRV and ERV Defrost Cycles

- 4 -

EXHAUST AIR-

FROM BUILDING

FRESH AIR

TO BUILDING

EXHAUST AIR-

FROM BUILDING

FILTERED AIR

TO BUILDING

EXHAUST AIR-

FROM BUILDING

FILTERED AIR

TO BUILDING

EXHAUST AIR

FROM BUILDING

FRESH AIR

TO BUILDING

FRESH AIR

FROM OUTSIDE

EXHAUST AIR

TO OUTSIDE

FRESH AIR

FROM OUTSIDE

EXHAUST AIR

TO OUTSIDE

1.3 SPECIFICATIONS

Weight Oval Ports

Drain Diameter

42 lb (19 kg)

Fit 5” (127 mm) ducts

1/2” (12 mm)

45 lb (20.4 kg)

Fit 5” (127 mm) ducts

N/A Installation Chains, springs and hooks (provided with the unit). Motor Speeds High and low speed Electrical supply 120 V, 60 Hz 120 V, 60 Hz Power Consumption 150 watts 160 watts

Model HRV ERV

VF0038

VF0036

VF0039

VF0037

1.4.1 HRV UNITS

1. TECHNICAL DATA (CONT’D)

1.4 P

ERFORMANCE CHARTS

Ventilation Performance

NOTE: A

LL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

SUPPLY POWER SENSIBLE APPARENT

LATENT RECOVERY/

TEMPERATURE NET AIR FLOW CONSUMEDRECOVERY SENSIBLE MOISTURE

WATTS EFFICIENCY

EFFECTIVENESS

TRANS-

FER

68 82

116

110

66 65 59

78 76 68

0.07

0.04

0.08

Not tested

C°

0 0 0

-25

+35

F°

+32 +32 +32

-13

+95

l/s

23 30 44

cfm

48 63 93

m3/h

82 108 157

108

COOLING

HEATING

TOTAL RECOVERY EFFICIENCY

EXT STATIC NET SUPPLY GROSS AIR FLOW PRESSURE AIR FLOW SUPPLY EXHAUST

Pa 25 50

75 100 125 150 175 200

in.w.g.

.1 .2 .3 .4 .5 .6 .7 .8

l/s 52 50 48 45 43 41 38 35

cfm 110 106 101

96 92 87 81 75

/h 187 180 173 162 155 148 137 126

l/s 52 50 48 46 43 41 38 36

cfm 110 106 102

97 92 87 81 76

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 91 85

m3/h

205 198 191 180 173 162 155 144

Energy Performance

1.4.2 ERV UNITS

Ventilation Performance

NOTE: A

LL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

SUPPLY POWER SENSIBLE APPARENT

LATENT RECOVERY/

TEMPERATURE NET AIR FLOW CONSUMEDRECOVERY SENSIBLE MOISTURE

WATTS EFFICIENCY

EFFECTIVENESS

TRANSFER

70 85

127

102

67 65 61

82 77 73

0.60

0.54

0.49

0.50

C°

0 0 0

-25

+35

F°

+32 +32 +32

-13

+95

l/s

22 30 45

cfm

46 64 91

79 108 155

108

166

COOLING

HEATING

TOTAL RECOVERY EFFICIENCY

EXT STATIC NET SUPPLY GROSS AIR FLOW PRESSURE AIR FLOW SUPPLY EXHAUST

Pa 25 50

75 100 125 150 175 200

in.w.g.

.1 .2 .3 .4 .5 .6 .7 .8

l/s 55 53 50 49 46 44 42 39

cfm 116 113 107 104

98 94 88 82

/h 197 192 182 177 166 160 150 139

l/s 56 55 52 50 48 46 43 40

cfm 119 116 111 107 101

97 91 84

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 90

m3/h

212 206 195 190 178 170 161 153

Energy Performance

- 5 -

1. TECHNICAL DATA (CONT’D)

1.5 DIMENSIONS

1.5.1 DIMENSIONS FOR PORTS ON SIDES UNITS

HRV

ERV

1.5.2 DIMENSIONS FOR PORTS ON TOP UNITS

HRV ERV

1.6 C

ONTROLS AND LINKAGE POSSIBILITY

MAIN CONTROL

• VT4W

AUXILIARY CONTROLS

• 20-MINUTE PUSH BUTTON TIMER

• 60-MINUTE CRANK TIMER

• HUMIDITY CONTROL

LINKAGE POSSIBILITY

• AIR HANDLER INTERLOCK (USED WITH FORCED AIR SYSTEM)

- 6 -

4’’ (102 mm)

6’’ (152 mm)

VK0055

4’’ (102 mm)

6’’ (152 mm)

27 16” (688 mm)

16” (574 mm)

2” (51 mm)

27 16” (688 mm)

16” (574 mm)

13¾”

(349 mm)

19 16” (503 mm)

12 16”

(310 mm)

12 16”

(310 mm)

VK0057

19 16”

(503 mm)

16” (574 mm)

23 ¾” (603 mm)

16 ¼”

(413 mm)

VK0056

2” (51 mm)

4’’ (102 mm)

6’’ (152 mm)

2½”

(64 mm)

16”

(310 mm)

19 16”

(503 mm)

VK0058

16” (574 mm)

23 ¾” (603 mm)

4’’ (102 mm)

6’’ (152 mm)

2½”

(64 mm)

16”

(310 mm)

2.3 SIMPLIFIED INSTALLATION (CONNECTION TO A FORCED AIR SYSTEM)

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.)

2.2 CENTRAL DRAW POINT (CONNECTION TO A FORCED AIR SYSTEM.)

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.

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.

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.

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.

To avoid cross-contamination and achieve the highest efficiencies, the forced air system blower must always be ON.

NOTE: Home with multiple forced air systems should have one unit on

each system.

- 7 -

VH0055

VH0056

VH0057

2. TYPICAL INSTALLATIONS (CONT’D)

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.

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.

ANCHORAGE

WHITEHORSE

JUNEAU

HAY RIVER

YELLOWKNIFE

Prince Rupert

GRANDE PRAIRIE

FORT MCMURRAY

FORT SMITH

EDMONTON

PRINCE ALBERT

SASKATOON

JASPER

KAMLOOPS

CALGARY

PENTICTON

REGINA

LETHBRIDGE

HELENA

VICTORIA

OLYMPIA

WINNIPEG

SALEM

BOISE

BISMARCK

SALT LAKE CITY

SAULT STE MARIE

ST. PAUL

DES MOINES

MADISON

TIMMINS

HARRISBURG

SACRAMENTO

DENVER

TOPEKA

SUDBURY

TORON TO

DETROIT

INDIANAPOLIS

SANTA FE

SPRINGFIELD

OKLAHOMA CITY

PHOENIX

COLUMBUS

NASHVILLE

ATLANTA

BATON ROUGE

AUSTIN

COLUMBIA

RALEIGH

WASHINGTON

OTTAWA

NORTH BAY

VAL-DOR

CHICOUTIMI

HARTFORD

CHIBOUGAMAU

MONTRÉAL

QUEBEC

BOSTON

GOOSE BAY

LABRADOR CITY

SEPT-ILES

MATANE

GASPÉ

BATHURST

ST-JOHN

HALIFAX

CHARLOTTETOWN

ST JOHN’S

RENO

2.4 INSTALLATION FOR ERV UNITS ONLY

2.4.1 GEOGRAPHICAL LOCATION

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).

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.

To avoid cross-contamination and achieve the highest efficiencies, the forced air system blower must always be ON.

NOTE: Home with multiple forced air systems should have 1 unit on

each system.

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).

CAUTION

2.4.2 ERV UNITS ATTIC INSTALLATION

- 8 -

VN0006

VH0058

- 9 -

3. INSTALLATION

.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.

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

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

port to 3rd notch.

NOTE: If the unit needs 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.

The door latches location can be changed from sides to front of the unit, according to the installation needs.

To do so, turn the unit upside down. Open the latches and unscrew them from the unit. Install the latches on their new locations.

Port with integrated balancing

damper - Top view

Latches on sides of the unit

Latches in front of the unit

VO0089

VO0090

VO0094

VD0183

VJ0032

VD0176

- 10 -

3. INSTALLATION (CONT’D)

3.5 P

LANNING 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

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.

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.

3.4 HOW TO HANG THE UNIT

Hang the unit with the 4 chains, hooks and springs provided.

CAUTION

Make sure the unit is level.

VD0184

VD0185

3. INSTALLATION (CONT’D)

3.6 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)

3.6.2 C

ENTRAL 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

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.

• Connect this opening to the

Fresh air to building

port of the HRV/ERV (use steel

duct, see figure beside).

• 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).

Method 2: Return side connection

• Cut an opening into the furnace return duct not less than 10 feet (3.1 m) from the 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).

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.

MINIMUM 18”

(0.5 M)

A+B=

NOT LESS

THAN

10’ (3.1 M)

STEEL DUCT

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3.6 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)

3.6.3 S

IMPLIFIED INSTALLATION (AS ILLUSTRATED IN SECTION 2.3)

There are 2 methods for connecting the unit to the furnace/air handler:

Method 1: Supply-return connection Method 2: Return-return without

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 2.6.2. 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.

3. INSTALLATION (CONT’D)

CAUTION

If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit operation! See Section 5

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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, 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, the furnace blower must be in operation when the HRV/ERV is in operation.

A+B= NOT LESS

THAN 10’ (3.1 M)

MINIMUM 18”

(0.5 M)

STEEL DUCT

A+B= NOT LESS

THAN 10’ (3.1 M)

MINIMUM 3’

(0.9 M)

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Rigid ducts

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.

3.7 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 vapor barrier on the insulated ducts does not tear during installation to avoid condensation within the ducts.

CAUTION

Do not use screws to connect the rigid ducts to the ports.

CAUTION

Make sure the balancing dampers are set to their appropriate position before connecting the ducts to the ports. See Section 3.3

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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.

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.

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

NOTE: The joist opening needed to install the Tandem® tansition must be

9¾” (248 mm) minimum. Also, the maximum height of the Tandem® transition is 8¾” (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 next Section 3.9 I

NSTALLING 2 EXTERIOR HOODS.

*Patent pending.

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3. INSTALLATION (CONT’D)

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9 3/4"

248 mm

8 3/4"

222 mm

3.8 INSTALLING THE TANDEM® TRANSITION KIT (CONT’D)

3.8.1 C

ONNECTION 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.

3.8.2 A

SSEMBLING DUAL EXTERIOR HOOD*

Exterior dual hood is coming in separate parts. Using 2 #8 x

¼4” 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

3.8.3 L

OCATING 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.

3.8.4 C

ONNECTING TANDEM® TRANSITION TO THE DUAL EXTERIOR HOOD

1. Using a jig saw, cut a 6’’ diameter hole in the exterior wall and insert the Tandem®

transition through this hole.

1) Exhaust air to outside duct

3. INSTALLATION (CONT’D)

EXHAUST AIR TO OUTSIDE

DUCT ON TOP

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.

CAUTION

The Tandem® transition must be inserted in such a way that the

Exhaust air to outside

duct will be located on the top.

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18''

(457 mm)

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3.8 INSTALLING THE TANDEM® TRANSITION KIT (CONT’D)

3.8.4 C

ONNECTING TANDEM® TRANSITION TO THE DUAL EXTERIOR HOOD (CONT’D)

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.

3. Using 4 #8 x 1¼” screws, mount the the exterior backplate to the exterior wall. Seal the

outline with caulking.

4. Snap the assembled exterior hood on its backplate and secure with 2 provided screws

(#8 x 1¼” long).

3. INSTALLATION (CONT’D)

CAUTION

The exterior backplate must be installed with the word “TOP” pointing upward.

Xmas tree pin

screw

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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.

TAPE AND DUCT TIE

OPTIONAL

DUCT LOCATION

EXHAUST HOOD

INTAKE HOOD

18’’

(457 MM)

18’’

(457 MM)

6’’ Ø

(152 MM)

18’’

(457

MM)

6’

(1.8 M)

6’

(1.8

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