Venmar Solo 1.5, Solo 2.0, Duo 1.9, Duo 1.2, Duo 1.4 Installer Manual

03309-04/10/08

Installer Manual

Ventilation Systems for residential use only

Duo 1.2 (part #: 43710)

Duo 1.4 (part #: 43700)

Duo 1.9 (part #: 45700)

Solo 1.5 (part #: 43720 and 43725)

Solo 2.0 (part #: 45720 and 45725)

VB0013

VB0012

2

Table of Contents

1.0 SERVICE ............................................................................................4

1.1 3-D Drawing ................................................................................4

1.2 Parts Ordering Chart....................................................................5

1.3 Technical Support ........................................................................5

2.0 SIZING ................................................................................................6

3.0 UNIT TYPE & DEFROST SETTING VS GEOGRAPHICAL LOCATION ..7

4.0 TECHNICAL DATA................................................................................8

4.1 Air Distribution (Normal Operation)..............................................8

4.2 Air Distribution (Defrost and/or Filtration Mode) ..........................8

4.3 Performance Charts ................................................................9-11

4.4 Dimensions ................................................................................12

4.5 Controls and Link Options..........................................................12

4.6 Specifications ............................................................................12

5.0 TYPICAL INSTALLATIONS ..................................................................13

5.1 Fully Ducted System ..................................................................13

5.2 Exhaust Ducted System

(Source Point Ventilation)

..................13

5.3 Simplified

(Volume Ventilation)

..................................................13

6.0 INSTALLATION....................................................................................14

6.1 Locating and Mounting the Unit ................................................14

6.2 Planning of the Ductwork ..........................................................14

6.3 Calculating the Duct Size ..........................................................15

6.3.1 Example Calculation ........................................................15

6.3.2 Example of a Design for a Fully Ducted System ............15

6.4 Installing the Ductwork and Registers ......................................16

6.4.1 Fully Ducted System........................................................16

6.4.2 Exhaust Ducted System (Source Point Ventilation) ........16

6.4.3 Simplified Installation (Volume Ventilation)......................17

6.5 Connecting the Duct to the Unit ................................................18

6.6 Installing the Exterior Hoods ......................................................19

6.7 Connecting the Drain (Solo only) ..............................................20

7.0 CONTROL DEVICES ..........................................................................21

7.1 Main Controls ............................................................................21

7.2 Optional Controls ......................................................................21

7.3 Other Features ..........................................................................22

3

Table of Contents (cont’d)

About this Manual

8.0 INSTALLATION OF THE CONTROLS ..................................................22

8.1 Dimensions and Specifications ................................................22

8.2 Installation of the Main Control ..........................................22-23

8.3 Installation of the Wireless Push button and Receiver ............24

8.4 Electrical Connection to Optional Controls ..............................25

8.5 Electrical Connection to the Furnace ......................................25

9.0 WIRING DIAGRAMS ....................................................................26-27

10.0 AIR FLOW BALANCING ................................................................28

11.0 OVERALL VERIFICATION ..................................................................29

11.1 Main Controls ..........................................................................29

11.2 Optional Controls ....................................................................30

12.0 MAINTENANCE / INSTRUCTIONS FOR USER....................................30

13.0 TROUBLESHOOTING ....................................................................31-32

14.0 REFERENCES....................................................................................32

This manual uses the following symbols to emphasize particular information:

NOTE: Indicates supplementary information needed to fully complete an instruction.

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.

4

1.1 3-D DRAWING

1.0 Service

5

Unit shown in normal position.

1

VL0007

5

1.2 PARTS ORDERING CHART

1.0 Service (cont’d)

TO ORDER PARTS: Contact your local distributor.

No Description SOLO 1.5 SOLO 2.0 DUO 1.2 DUO 1.4 DUO 1.9

(A) 43720 (A) 45720 43710 43700 45700

(B) 43725 (B) 45725
1 Double Collar Port #2 02257 02257 02257 02257 02257
2 Damper #1 (kit) 12454 12454 12454 12454 12454
3 Damper Rod (kit) 13037 13037 13037 13037 13037
4 Electronic Board & spacers (kit) 13038 13038 13039 13039 13039
5 Thermistor (kit) 12895 12895 12895 12895 12895

6 Door Latches & screws

00886 (2) 00886 (2) 00886 (2) 00886 (2) 00886 (2)

00601 (4) 00601 (4) 00601 (4) 00601 (4) 00601 (4)
7 Damper Actuator Assembly 13734 13734 13734 13734 13734
8 Basic Filter 03308 03308 03308 03308 03308
9 Blower Assembly 12908 12912 12909 12909 12911

10 Square Damper (kit) 13033 13033 13033 13033 13033
11 Top Wheel 02238 02238 02238 02239 02239
12 Motor 12109 12157 12109 12109 12157
13 Bottom Wheel 02240 02240 02239 02239 02240
14 Door Ass’y (including 15 to 17) 13346 13346 13346 13346 13346
15 Door Latches (keeper) 00887 (2) 00887 (2) 00887 (2) 00887 (2) 00887 (2)

& Screws 00601 (4) 00601 (4) 00601 (4) 00601 (4) 00601 (4)
16 Label 03328 03328 03328 03328 03328
17 Hinge Ass’y (kit) 13036 13036 13036 13036 13036
18 Pleated Optional Filter 03316 03316 03316 03316 03316

Charcoal Optional Filter 03315 03315 03315 03315 03315

Electronic Optional Filter 03314 03314 03314 03314 03314
19 Thermal Wheel N/A N/A 13045 13044 13045

20 Recovery Core

(A) 03322 (A) 03322

N/A N/A N/A

(B) 03311 (B) 03311
21 Balancing Double Collar Port 02256 02256 02256 02256 02256
22 Balancing Damper 02253 02253 02253 02253 02253
23 Snap Bushing DP-750 03324 (2) 03324 (2) 03324 (2) 03324 (2) 03324 (2)

& O-Ring 03310 (4) 03310 (4) 03310 (4) 03310 (4) 03310 (4)
24 Drain Connector (kit) 03203 03203 N/A N/A N/A
25 Door Switch (SPST), E69 10A 01825 01825 01825 01825 01825

Please take note that parts not listed are not available; those parts require assembly knowledge that only manufacturer
can guarantee.

For assistance, call on weekdays, 8:30 AM to 5:00 PM (Eastern Standard Time).

NOTE: Do not call this number for ordering parts.

Canada & USA: 1-800-649-0372 (toll free)

1.3 TECHNICAL SUPPORT (FOR ASSISTANCE)

6

These are the two most common methods used to evaluate the ventilation needs of a house:

CSA F326 and Canadian Building Code:

• High speed: 10 cfm per room
20 cfm for the master bedroom and the basement

• Low speed: 40-60% of high speed

ASHRAE Standard 62-2001:

• 0.35 air change per hour

Refer to ventilation code of your area to determine which method to use.

Example:

2.0 Sizing

1320 ft

2

1320 ft

2

CSA F326

Kitchen (10 cfm)
Dining room (10

cfm)

Living room (10

cfm)

family room (10

cfm)

Master bedroom (20

cfm)

Bedroom #1 (10

cfm)

Bedroom #2 (10

cfm)

Bedroom #3 (10

cfm)

Bathroom #1 (10

cfm)

Bathroom #2 (10

cfm)

Bathroom #3 (10

cfm)

Laundry room (10

cfm)

Basement (20 cfm)

Total 150

cfm

ASHRAE Standard 62-1989

Volume of basement 10560 ft

3

Volume of main floor 10560 ft

3

Volume of second floor 10560 ft

3

Total volume 31680 ft

3

x 0.35/h

11090 ft3/h

÷ 60 (min/h)

Total 185 cfm

1320 ft

2

Second floor

Main floor

Basement

Master
Bedroom

Bedroom #1

Bathroom

#1

Bedroom
#2

Bathroom

#2

Bedroom
#3

Basement

VH0021A

Laundry
room

Bathroom

Living room

Family room

#3

Kitchen

Dining room

7

3.0

Unit Type & Defrost Setting vs Geographical Location

WHITEHORSE

JUNEAU

HAY RIVER

YELLOWKNIFE

Prince Rupert

GRANDE PRAIRIE

FORT MCMURRAY

ZONE A

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

TORONTO

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 JO

ZONE C

ZONE B

RENO

ZONE A Solo is recommended.

Set :”extended defrost”

according to Section 9.

ZONE B Solo is recommended but if a Duo unit is used, it has to

be oversized (because of its high humidity transfer efficiency).

Set “

extended defrost” according to Section 9.

ZONE C Solo or Duo (any models). “Extended defrost” not required

(factory defrost strategy pre-set).

SYMPTOM SOLUTION

(condensation)

Indoor air quality problem DUO

and / or

Excess moisture problem DUO

and/or

Important excess moisture problem SOLO

Q

ZONE B & C SELECTION CHART

NORTH AMERICA

0013
V

VN0001

9

8VF0017

8

4.1 AIR DISTRIBUTION (NORMAL OPERATION)

4.2 AIR DISTRIBUTION (DEFROST AND/OR FILTRATION MODE)

4.0 Technical Data

6

SOLO

DUO

STALE AIR
FROM BUILDING

SOLO

FILTERED AIR
TO BUILDING

DUO

FRESH AIR
FROM OUTSIDE

STALE AIR
FROM BUILDING

FRESH AIR
FROM OUTSIDE

FRESH AIR
TO BUILDING

STALE AIR
TO OUTSIDE

FRESH AIR
TO BUILDING

STALE AIR
TO OUTSIDE

STALE AIR
FROM BUILDING

FILTERED AIR
TO BUILDING

STALE AIR
FROM BUILDING

SOLO units

DUO units

Celcius (˚C)

-5

-15

-27

Fahrenheit (˚F)

23

5

-17

Defrosting (min.)

6
6
6

Operation time

(min.)

between each defrost cycle

60
32
20

Defrosting (min.)

10
10
10

Operation time

(min.)

between each defrost cycle

30
20
15

Outside Temperature Defrost Cycles Extended Defrost Cycles

Celcius (˚C)

-5

-15

-27

Fahrenheit (˚F)

23

5

-17

Defrosting (min.)

9
9
9

Operation time

(min.)

between each defrost cycle

60
32
20

Defrosting (min.)

10
10
10

Operation time

(min.)

between each defrost cycle

30
20
15

Outside Temperature Defrost Cycles Extended Defrost Cycles

VF001

VF001

VF001

9

4.0 Technical Data (cont’d)

4.3 PERFORMANCE CHARTS

MODEL NUMBER: SOLO 1.5

Electrical requirements: 120 volts, 1.3 amps.
Exhaust air transfer ratio: 0.01

External Static Pressure - Pascals

(250 Pascals = 1” of water)

Gross Air Flow -L/s (0.47L/s = 1cfm)

ENERGY PERFORMANCE

Supply Net Average Sensible Recovery Apparent Sensible Latent Recovery
Temperature Air Flow Power Efficiency Effectiveness Moisture Transfer
°C °F L/s cfm watts % %

0 32 31 66 85 69 81 -0.01
0 32 56 119 124 60 70 -0.01
032

-25 -13 37 78 114 62 80 0.08

-25 -13

Total Recovery Efficiency

35 95 Not tested
35 95

COOLING

HEATING

VENTILATION PERFORMANCE

External Static Net Supply Gross Air Flow

Pressure Air Flow Supply Exhaust

Pa in. w.g. L/s cfm L/s cfm L/s cfm

25 0.1 83 175 83 176 82 175
50 0.2 79 168 80 169 78 165

75 0.3 75 159 75 159 75 158
100 0.4 71 150 71 151 69 146
125 0.5 64 136 64 136 60 127
150 0.6 60 126 60 127 48 103
175 0.7 53 113 53 113 38 80
200 0.8 43 91 43 91 21 45

Supply
(l/s)
Exhaust
(l/s)

External Static Pressure - Pascals

(250 Pascals = 1” of water)

225

200

175

150

125

100

75

50

25

0

05025 75 100 125 150

VG0011

MODEL NUMBER: SOLO 2.0

Electrical requirements: 120 volts, 2.1 amps.
Exhaust air transfer ratio: 0.01

VENTILATION PERFORMANCE

External Static Net Supply Gross Air Flow

Pressure Air Flow Supply Exhaust

Pa in. w.g. L/s cfm L/s cfm L/s cfm

25 0.1 110 234 112 237 112 237
50 0.2 104 219 105 223 106 225

75 0.3 98 208 100 211 99 210
100 0.4 89 189 91 192 91 193
125 0.5 84 177 85 180 82 174
150 0.6 71 151 72 153 71 149
175 0.7 64 136 65 138 44 94

ENERGY PERFORMANCE

Supply Net Average Sensible Recovery Apparent Sensible Latent Recovery
Temperature Air Flow Power Efficiency Effectiveness Moisture Transfer
°C °F L/s cfm watts % %

0 32 56 119 124 60 70 -0.01
0 32 86 182 197 53 62 -0.01

-25 -13 37 78 114 62 80 0.08

-25 -13

Total Recovery Efficiency

35 95 Not tested
35 95

COOLING

HEATING

Supply
(l/s)
Exhaust
(l/s)

Gross Air Flow -L/s (0.47L/s = 1cfm)

225

200

175

150

125

100

75

50

25

0

VG0010

05025 75 100 125

150

10

4.3 PERFORMANCE CHARTS (CONT’D)

4.0 Technical Data (cont’d)

External Static Pressure - Pascals

(250 Pascals = 1” of water)

225

200

175

150

125

100

75

50

25

0

05025 75 100 125

150

MODEL NUMBER: DUO 1.2

Electrical requirements: 120 volts, 1.4 amps.
Exhaust air transfer ratio: 0.01

VENTILATION PERFORMANCE

External Static Net Supply Gross Air Flow

Pressure Air Flow Supply Exhaust

Pa in. w.g. L/s cfm L/s cfm L/s cfm

25 0.1 62 131 62 133 64 137
50 0.2 59 125 60 127 61 130

75 0.3 58 123 58 124 58 123
100 0.4 54 114 55 116 55 117
125 0.5 51 108 52 110 50 107
150 0.6 45 95 45 96 47 99
175 0.7 39 83 39 84 40 85
200 0.8 31 65 31 66 29 62

ENERGY PERFORMANCE

Supply Net Average Sensible Recovery Apparent Sensible Latent Recovery
Temperature Air Flow Power Efficiency Effectiveness Moisture Transfer
°C °F L/s cfm watts % %

0 32 32 68 108 77 87 0.61
0 32 56 119 156 71 81 0.56
032

-25 -13 51 108 189 66 82 0.69

-25 -13

Total Recovery Efficiency

35 95 31 66 103 75
35 95 55 117 151 69

COOLING

HEATING

Gross Air Flow -L/s (0.47L/s = 1cfm)

Supply
(l/s)
Exhaust
(l/s)

External Static Pressure - Pascals

(250 Pascals = 1” of water)

MODEL NUMBER: DUO 1.4

Electrical requirements: 120 volts, 1.4 amps.
Exhaust air transfer ratio: 0.02

VENTILATION PERFORMANCE

External Static Net Supply Gross Air Flow

Pressure Air Flow Supply Exhaust

Pa in. w.g. L/s cfm L/s cfm L/s cfm

25 0.1 69 145 70 148 78 165
50 0.2 65 137 66 140 72 153

75 0.3 60 127 61 129 65 138
100 0.4 57 120 58 123 60 127
125 0.5 49 104 50 106 49 104
150 0.6 43 91 44 93 42 89
175 0.7 30 64 31 66 31 66
200 0.8 22 46 22 47 23 49

ENERGY PERFORMANCE

Supply Net Average Sensible Recovery Apparent Sensible Latent Recovery
Temperature Air Flow Power Efficiency Effectiveness Moisture Transfer
°C °F L/s cfm watts % %

0 32 32 68 110 70 80 0.79
0 32 47 100 164 65 74 0.67
0 32 57 121 172 64 72 0.60

-25 -13 29 61 120 64 79 0.65

-25 -13

Total Recovery Efficiency

35 95 31 66 104 69
35 95 57 121 168 61

COOLING

HEATING

Supply
(l/s)
Exhaust
(l/s)

Gross Air Flow -L/s (0.47L/s = 1cfm)

225

200

175

150

125

100

75

50

25

0

VG0009

05025 75 100 125

150

11

4.3 PERFORMANCE CHARTS (CONT’D)

4.0 Technical Data (cont’d)

MODEL NUMBER: DUO 1.9

Electrical requirements: 120 volts, 2.2 amps.
Exhaust air transfer ratio: 0.01

External Static Pressure - Pascals

(250 Pascals = 1” of water)

VENTILATION PERFORMANCE

External Static Net Supply Gross Air Flow

Pressure Air Flow Supply Exhaust

Pa in. w.g. L/s cfm L/s cfm L/s cfm

25 0.1 97 206 98 208 100 233
50 0.2 95 202 96 204 106 224

75 0.3 89 189 90 191 100 211
100 0.4 85 180 86 182 94 199
125 0.5 80 169 81 171 89 189
150 0.6 74 157 75 159 81 173
175 0.7 65 138 66 139 73 156
200 0.8 56 119 57 120 59 125
225 0.9 34 71 34 72 26 56

ENERGY PERFORMANCE

Supply Net Average Sensible Recovery Apparent Sensible Latent Recovery
Temperature Air Flow Power Efficiency Effectiveness Moisture Transfer
°C °F L/s cfm watts % %

0 32 56 119 156 71 81 0.56
0 32 84 178 230 65 72 0.46
032

-25 -13 51 108 189 66 82 0.69

-25 -13

Total Recovery Efficiency

35 95 55 117 151 69
35 95

COOLING

HEATING

Gross Air Flow -L/s (0.47L/s = 1cfm)

Supply
(l/s)
Exhaust
(l/s)

225

200

175

150

125

100

75

50

25

VG0010

0

05025 75 100 125

150

12

4.0 Technical Data (cont’d)

Main controls:

• Venta

• Supra

• Ultima

Optional controls:

• 20/40/60-minute
push-button timer

• 20-minute wireless
push-button timer

• 60-minute crank timer

• Dehumidistat

Link options:

• Furnace interlock
(used with forced
air systems)

• Interface for the

Perfect

Climate Comfort Center™

(Honeywell control, W8900)

4.5 CONTROLS AND LINK OPTIONS

4.6 SPECIFICATIONS

Model

Weight
Port Diameter

Drain Diameter

Solo 1.5

71 lbs (32 kg)

6” (152 mm)

1/2” (12 mm)

Solo 2.0

73 lbs (33 kg)

6” (152 mm)

1/2” (12 mm)

Duo 1.2

79 lbs (36 kg)

6” (152 mm)

N/A

Duo 1.4

75 lbs (34 kg)

6” (152 mm)

N/A

Duo 1.9

77 lbs (35 kg)

6” (152 mm)

N/A

Installation Chains, springs and hooks (provided with the unit).
Motor Speed High and low speed factory set (optional increased or decreased low speed).
Electrical supply 120 V, 60 Hz 120 V, 60 Hz 120 V, 60 Hz 120 V, 60 Hz 120 V, 60 Hz
Power

150 watts 240 watts 160 watts 160 watts 250 watts

Consumption

4.4 DIMENSIONS

6" (152 mm)

VK0029

30 1/4" (768 mm)

17 1/8" (435 mm)

16 1/2"
(419 mm)

13

5.0 Typical Installations

(Primarily for homes with radiant hot water or
electric baseboard heating. See figure 1.)

Moist, stale air is exhausted from the high
humidity areas in the home, such as
bathrooms, kitchen and laundry room. Fresh air
is supplied to bedrooms and principal living
areas.

The use of bathroom fans and a range hood is
suggested to exhaust stale air.

Homes with more than one level require at least
one exhaust register at the highest level.

5.1 FULLY DUCTED SYSTEM

There are three (3) common installation methods.

*Installations may vary according to the model number and the position (normal or
reverse) in which the unit is installed.

figure 1

See 6.4.1
for details

5.2 EXHAUST DUCTED SYSTEM

(SOURCE POINT VENTILATION)

(For homes with forced air heating. See figure 2.)

Moist, stale air is exhausted from the high humidity
areas in the home, such as bathrooms, kitchen and
laundry room. Fresh air is supplied to the cold air
return or the supply duct of the furnace. The use of
bathroom fans and a range hood is suggested to
exhaust stale air.

Homes with more than one level require at least one
exhaust register at the highest level.
NOTE: For this type of installation, it is not essential

that the furnace blower runs when the unit is
in operation, but we recommend it.

See 6.4.2
for details

figure 2

5.3 SIMPLIFIED

(VOLUME VENTILATION)

(For homes with forced air heating. See figure 3.)

Fresh air and exhaust air flow through the furnace
ducts which simplifies the installation.

The use of bathroom fans and a range hood is
suggested to exhaust stale air.

NOTE: For this type of installation, the furnace

blower should be running when the unit is
in operation.

0007

figure 3

See 6.4.3
for details

VH0002

VH0006

VH

6.2 PLANNING OF THE DUCTWORK

14

6.0 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, door

latches, door hinges, dampers, duct collars, cabinet, etc.

• Inspect the interior of the unit for damage. Ensure that the fan motor assembly, recovery module,

insulation, dampers, damper actuator and condensation tray (Solo) are all intact.

• If the unit was damaged during shipping, contact your local distributor. (Claim must be made within 24
hours after delivery.)

• Use checklist included with the unit to ensure that no parts are missing.

6.1 LOCATING AND MOUNTING THE UNIT

NOTE:

Please note that the unit can be installed in either the “normal” or “reverse” (upside down)

position.

Choose an appropriate location for the unit:

• Within an area of the house where the temperature is above 10°C / 50°F
(basement, attic, furnace room, laundry room, etc.).

• Away from living areas (dining room, living room, bedroom), if possible.

• So as to provide easy access to the interior cabinet and to the control
panel on the side of the unit.

• Close to an exterior wall, so as to limit the length of the insulated flexi­ble duct to and from the unit.

• Close to a drain. If no drain is close by, use a pail to collect run-off.
(Solo models only.)

• Away from hot chimneys, electrical panel and other fire hazards.

• Allow for a power source (standard outlet).

Hang the unit with the 4 chains and springs provided (see figures 4 and 5).

figure 4

figure 5

figure 6

CAUTION

Make sure the unit is level, with a 1/8’’ (3 mm) tilt
backwards (see figure 6).

a) Follow the instructions in Section 6.3 next page to determine the appropriate duct diameters for your

system.

b) Keep it simple. Plan for a minimum number of bends and joints. Keep the length of insulated duct to

a minimum.

c) Do not use wall cavities as ducts. Do not use branch lines smaller than 4” (102 mm) Ø.
d) 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 recovery module. Use sheet metal for the kitchen
exhaust duct.

e) Be sure to plan for at least one exhaust register on the highest lived-in level of the house if it has 2

floors or more.

1/8"

(3 mm)

VD0037

VD0038

VD0039A

level

15

6.0 Installation (cont’d)

Use the table below 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 6.2.1 and 6.2.2 use imperial measures.

The same calculation applies to metric measures.

6.3.1 Example of calculation:

Problem: My installation requires two exhaust registers (one for the kitchen, one for the bathroom).
I will connect these registers to a main duct which will connect to the unit (high speed performance
value of 140 cfm). What size of duct should I use for the main exhaust duct and for the two end
branches leading to the registers? (See figure 7.)

Solution: Simplified method.

(For a more detailed method of calculating duct size refer to the

ASHRAE or HRAI HANDBOOK).
Main duct:

Table above indicates a 6” Ø duct: recommended air flow: 120 cfm; maximum air flow:
180 cfm. The high speed air flow of 140 cfm is close enough to the recommended value (120) and
far enough away from the maximum value (180). Therefore a 6ӯ duct or larger is an appropriate
choice for the main exhaust duct.

End branches: Each end branch will have to transport an air flow of 70 cfm (140 divided by 2).
Table above indicates a 5ӯ 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 enough away
from the maximum value (110). Therefore a 5ӯ duct or larger is an appropriate choice for the 2
end branches.

NOTE: A 4ӯ duct would have been too small because the maximum acceptable value for a 4ӯ

duct is 60 cfm.

6.3 CALCULATING THE DUCT SIZE

end

branches

main branch

6”ø 140 cfm

5”ø

70 cfm

4”(102 mm) 40 cfm 19 l/s 68 m3/h 60 cfm 28 l/s 102 m3/h
5”(127 mm) 75 cfm 35 l/s 127 m3/h 110 cfm 52 l/s 187 m3/h
6”(152 mm) 120 cfm 57 l/s 204 m3/h 180 cfm 85 l/s 306 m3/h
7”(178 mm) 185 cfm 87 l/s 314 m3/h 270 cfm 127 l/s 459 m3/h
8”(203 mm) 260 cfm 123 l/s 442 m

3

/h 380 cfm 179 l/s 645 m3/h

Duct Recommended Maximum

Diameter Air Flow Air Flow

figure 7

6.3.2 Example of a design for a fully ducted system for a unit having a high
speed performance of 222 cfm (See figure 8).

4” Ø

42 cfm

6” Ø

129 cfm

5” Ø

65 cfm

5” Ø

6” Ø

93 cfm

5”

6”

7”

7”

6”

6”

6”

4”

4”

4”

4”

4” Ø 42 cfm

6” Ø 84 cfm

6” Ø 96 cfm

6” Ø 138 cfm

7” Ø 222 cfm

7” Ø 222 cfm

VI0003

VI0004

16

6.0 Installation (cont’d)

6.4 INSTALLING THE DUCTWORK AND REGISTERS

WARNING

Never install a stale air exhaust register in a room where there is a combustion device, such as a
gas furnace, a gas water heater or a fireplace.

!

6.4.1 Fully Ducted System (as illustrated in Section 5.1)

Stale air exhaust ductwork:

• Install registers in areas where contaminants are produced: kitchen, bathrooms, laundry
room, etc.

• Install registers 6 to 12 inches (152 to 305 mm) from the ceiling on an interior wall OR install
them in the ceiling.

• Install the kitchen register at least 4 feet (1.2 m) from the range.

• 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:

• Install registers in bedrooms, dining room, living room and basement.

• Install 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 level.)

• If a register must be floor installed, direct the air flow up the wall.

6.4.2 Exhaust Ducted System (Source Point Ventilation) (as illustrated in Section 5.2)

Stale air exhaust ductwork: (same as for Fully Ducted System, described on point 6.4.1)
Fresh air distribution:

There are two methods for connecting the unit to the furnace:

Method 1: supply side connection

• Cut an opening into the furnace supply duct at least
18 inches (0.5 m) from the furnace.

• Connect this opening to the fresh air distribution port

of the HRV/ERV (use steel duct

, see figure 9).

• Make sure that the HRV/ERV duct forms an elbow
inside the furnace ductwork.

• If desired, interlock (synchronize) the furnace blower
operation with the HRV/ERV operation. (See Section 8.5).

Method 2: return side connection

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

• Connect this opening to the fresh air distribution port
of the HRV/ERV (see figure 10).

NOTE:For Method 2, it is not essential that the furnace

blower runs when the unit is in operation, but
we recommend it. If desired, synchronize the
furnace blower operation with the HRV/ERV
operation (see Section 8.5).

WARNING

When performing duct connection to the furnace,

installation must be done in accordance with all

applicable codes and standards.

Please refer to your local building code.

CAUTION

When performing duct connection to the furnace supply duct,

this duct must be sized to support

the additional airflow produced by the ERV/HRV

. Also, use a steel duct. It is recommended that the

ERV/HRV is running when the furnace is in operation to prevent backdrafting inside ERV/HRV.

!

minimum

18” (0.5 m)

Steel duct

figure 9

A+B = not less

than 10’ (3.1 m)

figure 10

VD0172

A

VD0108

B

17

6.0 Installation

(cont’d)

6.4.3 Simplified installation

(Volume Ventilation) (as illustrated in Section 5.3)

There are two methods (figures 11 and 12) for connecting the unit to the furnace:

Method 1: return-supply Method 2: return-return

Stale air intake:

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

• Connect this opening to the stale air intake port on the HRV/ERV as shown.

Fresh air distribution: (same instructions as for Method 1 or Method 2, Section 6.4.2).

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.
NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the

unit operation, but we recommend it.

6.4 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)

minimum 3’

(0.9 m)

Steel duct

minimum

18”

(0.5 m)

figure 12

figure 11

CAUTION

If using Method 2, make sure the furnace blower operation is synchronized with the unit operation!
See Section 8.5.

WARNING

When performing duct connection to the furnace,

installation must be done in accordance with all

applicable codes and standards.

Please refer to your local building code.

!

A+B = not less

than 10’ (3.1 m)

A+B = not less

than 10’ (3.1 m)

CAUTION

When performing duct connection to the furnace ducts (Method 1),

these ducts must be sized to

support the additional airflow produced by the ERV/HRV

. Also, the supply duct must be a steel
duct. It is recommended that the ERV/HRV is running when the furnace is in operation to prevent
backdrafting inside ERV/HRV.

VD0171

A

B

A

B

18

6.0 Installation (cont’d)

Insulated flexible duct

Use the following procedure for connecting the insulated flexible duct to the ports on the unit (exhaust to
outside and fresh air from outside).

a) Pull back the insulation to expose the flexible duct.
b) Connect the interior flexible duct to the port using a duct tie.
c) Carefully seal the connection with duct tape.
d) Pull the insulation over the joint and tuck it between the inner and outer rings of the double collar.
e) Pull the vapor barrier over the insulation and over the outer ring of the double collar.
f) Apply duct tape to the joint making an airtight seal.

Avoid compressing the insulation when you pull 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.

a) b) c) d), e) f)

Rigid duct:

Use duct tape to connect the rigid ducts to the ports.

Make sure that the 2 balancing dampers are left in a fully open position before

connecting the ducts to

these ports (fresh air distribution port and stale air exhaust port as shown on figure 13).

6.5 CONNECTING THE DUCT TO THE UNIT

CAUTION

Make sure that the vapor barrier on the insulated ducts does not tear during installation to avoid
condensation within the duct.

VJ0001

VJ0002

VJ0003

VJ0004

VJ0005

CAUTION

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

figure 13

VJ0007

19

6.0 Installation (cont’d)

6.6 INSTALLING THE EXTERIOR HOODS

Choose an appropriate location for installing the exterior hoods:

• a minimum distance of 6 feet (1.8 m) between the hoods to avoid cross-contamination

• 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 any of 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 source of contamination

Refer to figure 14 for connecting the insulated duct to the hoods. Place the “FRESH AIR INTAKE” sticker,
provided in the installation kit, on corresponding hood. An “Anti-Gust Intake Hood” should be installed in
regions where a lot of snow is expected to fall.

VD0028

Exhaust

hood

Optional duct

location

Tape and duct tie

Intake

hood

6ӯ

(152 mm)

18”

(457 mm)

18”
(457 mm)

6’

(1.8 m)

6’

(1.8 m)

18”

(457 mm)

figure 14

20

6.7 CONNECTING THE DRAIN

(SOLO ONLY)

)

To drain

6.0 Installation (cont’d)

To install the drain fittings, punch the 2
knock-out sections located at the
bottom of the unit.

In order to keep the drain pan intact,
hand tighten the 2 plastic drain fittings to
the unit using the gaskets, washers and

From the inside, install 2 snap bushings
on top of the unit. Do not punch the 2

knock-out sections.

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.

Tie-wrap

12

3

4

5

6

Inside view

Inside view

VO0010

VO0008

12"(305 mm

VO0004

VO0011

VO0005

VO0012

21

VENTA model

7.1 MAIN CONTROLS

7.0

Control Devices

SUPRA model

ULTIMA model

MODELS VENTA SUPRA ULTIMA

Off Position X X X
Intermittent Exchange (40 min./ OFF -20 min./ON) X X
Low Speed Continuous Exchange X X X
High Speed Continuous Exchange X X X
Intermittent Filtration
(40 min./ filtration -20 min./exchange)

X

Low Speed Continuous Filtration X
High Speed Continuous Filtration X

Mode Indicator X X
Air Exchange Indicator X X
Maximum Speed Humidity Control Indicator X X
Flashing Maintenance Indicator X X

Sliding Button X

Push Button X X

SWITCHES INDICATORS MODELS

20/40/60-MINUTE PUSH-BUTTON TIMER:

This remote illuminated switch is typically installed in bathrooms, kitchen and laundry room to
provide 20, 40 or 60 minutes of high speed ventilation at the push of a button.

20-MINUTE WIRELESS PUSH-BUTTON TIMER:

This remote control provides 20 minutes of high speed ventilation. There is no need for electrical connection
between the transmitter and the receiver. The push-button timer can be installed in any room in the house.
This type of push-button switch is easy to intall. It is powered from two 3-volt lithium batteries with an
expected battery life of up to 3 years.

60-MINUTE CRANK TIMER:

This timer allows up to 60 minutes of high speed operation to be selected from a remote location.

DEHUMIDISTAT:

This optional control helps control maximum humidity level during fall, winter and spring. You will find a
relative humidity % scale meant to reduce the window condensation problems.

7.2 OPTIONAL CONTROLS

Voltage: 12 volts DC
Dimensions: 5” x 5” x 1 3/8”

(127 mm x 127 mm x 35 mm)

INSTRUCTIONS:

1- Determine the location of the control.

The wall
control must be installed in a central location on
the main floor. Typical locations for these controls
are kitchen, main hallways and family room.

2- Remove the button(s) and the cover plate of

the control.

8.2 INSTALLATION OF THE MAIN CONTROL

(V

ENTA

, S

UPRA

& U

LTIMA

)

CAUTION

Never install more than one main control per unit.

22

7.0

Control Devices (cont’d)

7.3 OTHER FEATURES

FURNACE INTERLOCK (for forced air heating system)

The furnace fan can be interlocked so that it will run simultaneously with the ventilation system to ensure
proper distribution of fresh air throughout the house.

The Perfect Climate Comfort Center™

With the help of an interface, the operation of your ventilation system can be controlled by

The Perfect

Climate Comfort Center™

(Honeywell control, W8900).

PERMANENT MEMORY

Our electronic controls have a default memory feature in the event of a power outage. Even the date of the
last service reminder is maintained as a convenience to the homeowner.

CONTROL UPGRADES

All controls can be used on any unit, so a Venta control can be upgraded to a Supra or an Ultima in the
future.

8.1 DIMENSIONS AND SPECIFICATIONS (MAIN CONTROLS)

8.0

Installation of the Controls

FRONT VIEW

SIDE VIEW

Supra or Ultima

Venta

13/8"

(35 mm)

5" (127 mm)

5" (127 mm)

VC0016

VC0026

23

3- Install the wall control 60 inches (1.5 m) from the floor and

leave a free space of at least 2 inches (5 cm) to the right of
the control to allow user to slide out the control instructions.

Use the template provided in the control box to position the
wire hole and the screw holes. Use the screws and the plastic
anchors provided in the installation kit to secure the control.
(See figure 15)

4- Connect the wires to the main control.

(See figure 16)

5- Make sure the instruction pull-out is in the occupant’s

language. If not, turn it to the other side.
(See figure 17)

6- Re-install the cover plate and the buttons.

7- Connect the wires to their corresponding position inside the

electrical compartment.
Make sure the connections of the unit and of the wall control
correspond exactly. (See figure 18)

8- Connect the optional controls (if applicable) by referring to

Sections 8.3 and 8.4.

9- Do the appropriate connection to the furnace (if applicable) by

referring to Section 8.5.

10- NOTE: If you are in a cold region (zone A or B, as defined in Section 3.0), set up “extended defrost” by

removing jumper JU1F on the main circuit board inside the electrical compartment (see Section 9.0).

11- Plug in the unit and do the “overall verification” of the system as described in Section 11.0.

8.0

Installation of the Controls (cont’d)

Y

VD0026

5

)

8.2 INSTALLATION OF THE MAIN CONTROL (CONT’D)

figure 15

figure 16

figure 17

figure 18

VD0025

2" (5 cm

" (1.

VC0061

VE0084

CHECKING MEMORY

1. Press and hold the program button for about
two seconds until indicator lights, then release
(see drawing below).

2. Count the number of indicator blinks. This is the
total number of push buttons programmed.

ERASING MEMORY

1. Press the program button and continue to hold
it through the count of the push buttons.

2. Continue to hold the button after the count until
the indicator blinks one more time (about five
seconds after the count).

3. All push buttons programmed into memory will be

erased.

24

INSTRUCTIONS:

1- Determine the location of the receiver illustrated in figure 19.

Important:

• Mount receiver as high as possible for best radio range.

• Don’t mount the receiver or push button directly on metal,
concrete or near metal studs. This can decrease radio
range by shielding the signal.

• Keep the receiver away from motors, fans and other electrical
devices that may cause interference and reduce radio range.

2- Use screws to attach the mounting bracket (see figure 20).
3- Snap the receiver onto the bracket (see figure 20).
4- Pull the antenna straight.
5- Connect the wires referring to Section 8.4.
6- Remove the plastic tab on the push button.
7- Program the memory of the receiver for each push button

(see “Programming Memory” below).

8- Determine the location of the push button.
9- Use the screws to attach the push button mounting bracket (see figure

21).

10- Snap the push button onto bracket.

8.3 INSTALLATION OF THE WIRELESS PUSH BUTTON AND RECEIVER

8.0

Installation of the Controls (cont’d)

PROGRAMMING MEMORY

1. Press and release the
program button.

2. Program indicator will
light for 3 seconds
if there is room in
memory for another
push button (32 push
buttons max.).

3. Within 3 seconds,
press the push button.
Indicator will flash as
signal is received.

4. Repeat the above
three steps for each additional push button.

NOTE: The switch on
the back of each push
button must be set at
“INSTANT” position.

NOTE: Do not continue to press button or memo-

NOTE: The receiver can memorize each push
button more than once. To prevent duplication
of entries, program each push button into
receiver only once.

figure 19

figure 20

figure 21

VC0062

VC0063

VC0064

VC0065

VC0066

VC0067

VC0065

25

Standard furnace interlock wiring

8.4 ELECTRICAL CONNECTION TO OPTIONAL CONTROLS

8.0

Installation of the Controls (con’d)

D

J1

J3

R

C.

Y

R

S

)

SS

S

0085A

8.5 ELECTRICAL CONNECTION TO THE FURNACE

Alternate furnace interlock wiring

For a furnace connected to 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”. An additional control relay will then have to be
installed.

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.

!

RECEIVE

+ - N.O. COM N.

WIRELE

MAIN PC BOAR

PUSH BUTTON

HUMIDIT

VE

NTROL OR

RANK TIME

PUSH-BUTTON SWITCHE

10 SWITCHES MAXIMUM

THERMOSTAT

Y

TERMINALS

HRV CONTROL CONNECTOR

J3

TWO WIRES

I OC OL Y R G BF F

COOLING SYSTEM

FOUR
WIRES

TWO WIRES

heating only

W

R

G

C

Y

FURNACE

24-VOLT

TERMINAL BLOCK

VE0010A

W R G

987654321

Unit Control Module

9-PIN AMP PLUG

J1

124

GRAY BROWN

COM

RELAY

COOLING SYSTEM

568

4 WIRES

2 WIRES

heating only

FURNACE

24-VOLT

TERMINAL BLOCK

VE0009A

WRGY

W

R

R

G

C

Y

Y

*FURNACE INTERLOCK RELAY, PART # 12658

THERMOSTAT

TERMINAL

wiring
nuts

GREEN

BLUE

2 WIRES

RED

NC NO

*FURNACE INTERLOCK

7

7

93

A1

M1

M2

K1

RELAY

K2

RELAY

K5

RELAY

FAN

MOTOR

DAMPER

MOTOR

NEUTRAL

MEDNCHIGH

LOW

J1 6

J1 3

J1 4

J1 9

K4

RELAY

J3 1

J3 2

FURNACE BLOWER INTERLOCK

CLASS 2 CIRCUIT ONLY

ELECTRONIC ASSEMBLY

S1

120V 60Hz

FROM MAIN

J1 2

J1 1

J1 8

VE0018A

26

9.0

Wiring Diagrams

Models: SOLO 1.5 and 2.0

NOTES

1- Controls available. See Section 8.0 (Low voltage only, 12VDC)

2- The factory set wiring for blower speed selection is high and low.

Medium speed can be selected instead of low speed. Disconnect the

RED wire from the motor RED tap and connect it to the motor BLUE tap.

3- If any of the original wire, as supplied, must be replaced, use the

same or equivalent wire.

4- Use the factory supplied protective tubing.

5- The field wiring must comply with applicable codes, ordonnances and

regulations.

6- The furnace fan circuit must be class 2 circuit only.

LINE VOLTAGE

LOW VOLTAGE AND

FIELD WIRE

COLOR CODE

BK BLACK NC NO CONNECTION

BL BLUE O ORANGE

BN BROWN R RED

G GREEN W WHITE

GY GREY Y YELLOW

DEFROST TIME

JUMPERS TABLE MODEL DEFROST/VENTILATION

TYPE MINUTES

23°F 5°F -22°F

JU1A JU1B JU1C JU1D JU1E JU1F JU1G -5°C -15°C -27°C

IN OUT OUT OUT IN IN OUT

43720, 45720

6/60 6/32 6/20

43725, 45725

IN OUT OUT OUT IN OUT OUT

EXTENDED DEFROST

10/30 10/20 10/15

ALL TYPES

FUNCTION TABLE RELAY

MODE K1 K2 K4 K5

Intermittent 0001

Exchange Low 1010

Exchange High 1110

Circulation Low 1011

Circulation High 1111

Defrost Cycle 1111

Off 0001

0 = Relay coil is de-energized

1 = Relay coil is energized

Connection

Logic

WARNING

Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the
unit from its power source.

!

A B C D E F G

2

1

JU 1

. .
. .

. .
. .
. .

. .
. .

C1

OPTIONAL

NOTE 5

NOTES 5, 6

OPTIONAL

NOTES 1, 5

WALL CONTROL

WALL CONTROL

WALL CONTROL

BKGRYRBKY

WALL CONTROL

FURNACE BLOWER

INTERLOCK

OVERRIDE SWITCH

OVERRIDE SWITCH

OVERRIDE LED

NOTE 4

1
2

A1

DEFROST

TEMPERATURE

ABCDEFG

JU1

SENSOR

M1

FF IOCOLYRG B

123

456789

J4

T1

R1

NEUTRAL

HIGH

GYOGRBL

X1

1

2

3

GYOGNCR

J3

GY

BN

LOW

BN

MEDIUM

R

7

4

12

FAN MOTOR

(NOTE 2)

BL

BL

9

O

6

3

J1

ELECTRONIC ASSEMBLY

X2 M2

BK

W

BLBLG

123

BLBLG

DAMPER MOTOR

G

POINT

MAIN EARTHING

W1

G

120V 60 Hz

W

LINE

NEUTRAL

NO

COM

NEMA-15P

5-15 PLUG

BK

SWITCH S1

DOOR INTERLOCK

BK

VE0017A

27

9.0

Wiring Diagrams (cont’d)

Models: DUO 1.2, 1.4 and 1.9

BKGRYRBKY

NOTE 4

WALL CONTROL

WALL CONTROL

WALL CONTROL

WALL CONTROL

OVERRIDE SWITCH

OVERRIDE SWITCH

OVERRIDE LED

FURNACE BLOWER

INTERLOCK

NOTE 5

NOTE 5

OPTIONAL

NOTE 6

OPTIONAL

THERMAL WHE

ASSEMBLY

GROUND

NEUTRAL

LINE

CAPACITOR

DRIVING MOTOR

RT1

M3

BYPASS THERMAL ACTUATOR

R2 C2

X3

M1

X2 M2

GWR

BK

V

V

123

4

1

2

1

123

1

12

4

7

6

9

3

23

456789

2

3

123

Y

V

BN

NEUTRAL

MEDIUM

HIGH

LOW

FAN MOTOR

X1

GYOGRBL

GYOGNCR

BN

BN

C1

YYG

DAMPER MOTOR

R

V

O

Y

BN

BN

GY

BL

BK

T1

R1

A1

DEFROST

SENSOR

JU1

J4

J1

J2

J3

ABCDEFG

F

F

I

OC

OLY R

G

B

ELECTRONIC ASSEMBLY

MAIN EARTHING

POINT

G

BLBLG

BK

W

COM

120V 60 Hz

W1

G

W

NEMA-15P

5-15 PLUG

BK

DOOR INTERLOCK

SWITCH S1

NO

NEUTRAL

LINE

BK

VE0019A

GROUND

NEUTRAL

LINE

CAPACITOR

DRIVING MOTOR

RT1

M3

BYPASS THERMAL ACTUATOR

R2 C2

X3

GWR

BK

V

V

123

4

GROUND

NEUTRAL

LINE

CAPACITOR

DRIVING MOTOR

RT1

M3

BYPASS THERMAL ACTUATOR

R2/R3

C2

X3

GWR

BK

V

V

123

4

30

30

BODI

NE OR EASTER

N AIR DEVI

CES

SEE BOXES BELOW

JUMPERS TABLE MODEL

JU1A JU1B JU1C JU1D JU1E JU1F JU1G

IN IN OUT OUT IN IN OUT 43700, 45700, 43710

IN IN OUT OUT IN OUT OUT EXTENDED DEFROST

FUNCTION TABLE RELAY DEFROST

MODE K1&K4 K2 K3 K5

Intermittent 0001

Continuous Low 1010

Continuous High 1110K5 active only (-15°C<T<+10°C)

Circulation Low 1001

Circulation High 1101

Defrost Cycle 1101

Off 0001

0 = Relay coil is de-energized

1 = Relay coil is energized

NOTES

1- Controls available. See Section 8.0. (Low voltage only 12VDC)

2- Factory set wiring for blower speed selection is high and medium. Low speed can be selected

instead of medium speed. Disconnect the RED wire from the motor BLUE tap and connect it to

the motor RED tap.

3- If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.

4- Use factory supplied protective tubing.

5- Field wiring must comply with applicable codes, ordonnances and regulations.

6- Furnace fan circuit must be class 2 circuit only.

DRIVING MOTOR DRIVING MOTOR DRIVING MOTOR

CAPACITOR RESISTOR

1.7 uF, 250 VAC 300 Ohms, 7W Bodine

1 uF, 330 VAC 400 Ohms, 10W Eastern Air Devices

1 uF, 250 VAC 800 Ohms, 8W Warner Electric

STANDARD EXTENDED

-5°C 9/60 min 10/30 min

-15°C 9/32 min 10/20 min

-27°C 9/20 min 10/15 min

Connection

Logic

LINE VOLTAGE

LOW VOLTAGE AND

FIELD WIRE

COLOR CODE

BK BLACK NC NO CONNECTION

BL BLUE O ORANGE

BN BROWN R RED

G GREEN-YELLOW V VIOLET

GY GREY W WHITE

Y YELLOW

WARNING

Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the
unit from its power source.

!

A B C D E F G

2

1

JU 1

. .
. .

. .
. .
. .

. .
. .

NEUTRAL

J1 2

120V 60Hz

A1

S1

FROM MAIN

J1 1

M1

FAN

MOTOR

LOW

HIGH

NC

J1 6

J1 3

MEDIUM

J1 4

K2

K1

RELAY

RELAY

J1 8

M3

RT1

BYPASS

THERMAL ACTUATOR

J9 1

J1 7

K5 RELAY

DRIVING

J2 1

J1 5

M2

MOTOR

MOTOR

DAMPER

J2 2

FURNACE BLOWER INTERLOCK

K3

J3 1

RELAY

J2 3

K4

CLASS 2 CIRCUIT ONLY

J3 2

ELECTRONIC ASSEMBLY

RELAY

VE0020A

28

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 provided with the unit.

PRELIMINARY STAGES TO BALANCE THE UNIT

• 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 balancing dampers are fully open.

• Make sure all filters are clean (if it is not the first time you balance
the unit).

BALANCING PROCEDURE

1. Set the unit to high speed:
Make sure that the furnace blower is ON if the installation is in any
way connected to the ductwork of the cold air return. If not, leave
furnace 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.) Disconnect the wire of the

bypass damper (Duo only).

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
(see diagram).
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.

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 in place with tape or with a fastening screw.

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). Connect the wire

of the bypass damper (Duo only).

NOTE: The unit is considered balanced even if there is a difference of

+/- 10 cfm or +/- 5 l/s or 17 m

3

/h between the two air flows.

10.0

Air Flow Balancing

SOLO

Fresh air flow

Exhaust air flow

Exhaust air flow

Fresh air flow

NOTE: Always unplug bypass wire while balancing a Duo.

DUO

VP0009

VD0051

VP0010

VP0011

VE0021

VD0052

29

VENTA

(6 different control scenarios to be tested)

11.1 MAIN CONTROLS

This procedure allows the installer to verify that all modes of operation are fully functional.

During the verification of a main control, make sure that all optional remote controls are inactive.

11.0

Overall Verification

Set the slider Set dehumidistat Results expected

switch to dial to fan speed / damper
1 off maximum counterclockwise motor off / closed
2 off maximum clockwise motor off / closed
3 min. maximum counterclockwise low speed / open
4 min. maximum clockwise high speed / open
5 max. maximum counterclockwise high speed / open
6 max. maximum clockwise high speed / open

Set air supply Set dehumidistat

Results expected

control to dial to

Fan Exchange Max speed

speed indicator indicator

(A)(B)

1 off maximum counterclockwise off *off off
2 off maximum clockwise off *off off
3 min. maximum counterclockwise low on off
4 min. maximum clockwise high on on
5 max. maximum counterclockwise high on off
6 max. maximum clockwise high on on

7 intermittent maximum counterclockwise

off 40 min *off 40 min off

low 20 min on 20 min off

8 intermittent maximum clockwise high on on

SUPRA

(8 different control scenarios to be tested)

ULTIMA

(14 different control scenarios to be tested)

Set air supply Set dehumidistat

Results expected

control to dial to

Fan Exchange Max speed

speed indicator indicator

(A)(B)

1 off maximum counterclockwise off *off off
2 off maximum clockwise off *off off
3 min. (green light) maximum counterclockwise low on off
4 min. (green light) maximum clockwise high on on
5 min. (red light) maximum counterclockwise low *off off
6 min. (red light) maximum clockwise high on on
7 max. (green light) maximum counterclockwise high on off
8 max. (green light) maximum clockwise high on on
9 max. (red light) maximum counterclockwise high *off off
10 max. (red light) maximum clockwise high on on

11

intermittent

maximum counterclockwise

off / 40 min. *off / 40 min. off

(green light) low / 20 min. on / 20 min. off

12

intermittent

maximum counterclockwise high on on

(green light)

13

intermittent

maximum counterclockwise

low / 20 min. on / 20 min. off

(red light) high / 40 min .*off / 40 min. off

14

intermittent

maximum counterclockwise high on on

(red light)

*The dampers are closed when

the exchange indicator is off.

*The dampers are closed when

the exchange indicator is off.

A

B

B

A

20-MINUTE WIRELESS PUSH-BUTTON TIMER:

Activate the push button.

Results expected:

1. Indicator light goes “ON”
while activating the push
button.

2. Motor speed: high for 20
minutes.

3. Supra or Ultima wall con­trols: Air exchange indicator
light goes “ON”.

NOTE:

To stop activation, push one more time.

60-MINUTE CRANK TIMER:

Activate the timer.

Results expected:

1. Motor speed: high for up to
60 minutes.

2. Supra or Ultima wall controls:
Air exchange indicator light
goes “ON”.

11.2 OPTIONAL CONTROLS

First, turn OFF the main control device before checking the remote optional controls.

30

11.0

Overall Verification (cont’d)

20/40/60-MINUTE PUSH-BUTTON TIMER:

Activate the push button. Within
2 seconds, push one time for
20 minutes, two times for
40 minutes or three times for a

60-minute activation.

Results expected:

1. Motor speed: high for 20,
40 or 60 minutes.

2. Indicator light goes “ON”
and flashes every 5 seconds (one time to
indicate a 20-minute operation, two times
for a 40-minute, and three times for a
60-minute operation).

3. Supra or Ultima wall controls: Air exchange
indicator light goes “ON”.

NOTE: To stop activation, push one more time.

DEHUMIDISTAT:

Turn dial to the maximum clock-

wise position (20%).

Result expected:

1. Motor speed changes to
high.

• Review with the user the steps required for the regular maintenance of her/his ventilation

system. These steps are described in detail in the user manual:

• Warn the user of the necessity to rebalance the system following a major house renovation or follow-

ing the installation of any extra registers.

• Make sure the user understands how to use the main control as described in the user manual.

12.0

Maintenance / Instructions for User

FOUR TIMES A YEAR:

• Inspect the intake hood, and clean if needed.

• Clean the filters.

• Clean the interior of the cabinet and clean the door.

• Clean the condensation tray and inspect the drain tubing (SOLO only).

ONCE A YEAR:

• Clean the recovery module (core or thermal wheel).

• Clean the blades of the blower wheels if needed.

WARNING

Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the
unit from its power source.

!

CAUTION

Do not oil the motor. It is already permanently lubricated.

20 min.

40 min.

60 min.

VC0007

VC0006

TURN

OFF

PAST

20

10

20

30

60

40

50

VC0017

31

Problems Possible causes You should try this

1. Unit doesn't work. • The circuit board may • Unplug the unit. Disconnect the main

be defective. control and the optional(s) contol(s)

(If need be). Jump B and G terminals.
Plug the unit. If the motor runs on
high speed and the damper opens,
the circuit board is not defective.

.

2. The damper actuator • The 9-pin connector may • Unplug the unit and check to make sure all the crimp

does not work. have a loose connection. connections are secured. Check the damper actuator

connections as well.

• The damper actuator may be • Feed 120 V directly to the damper actuator. If the
defective. problem persists, replace the damper actuator.

• The circuit board may be • Replace the circuit board if the problem is not solved by
defective. the above.

3. The wall control does • Erratic operation of the • Unplug the unit. Wait 30 seconds. Plug it back in.
not work control every 8 seconds.
OR
the indicators flash. • The wires may be in reverse • Ensure that the color coded wires have been connected

position. to their appropriate places.

• The wires may be broken. • Inspect every wire and replace any that are damaged.

• There may be a short-circuit. • With the help of a multimeter, check for continuity.

• The wire in the wall OR the • Jump “B” and “G” (BLACK and GREEN). If unit switches
wall control may be defective. to high speed, 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 doesn’t,
change the wall control.

• The circuit board may • If the unit does not switch to high speed, replace the
be defective. circuit board.

4. The dehumidistat • The dehumidistat or push • Jump the OL and OC terminals. If the
does not work OR button may be defective. unit switches to high speed, remove the
the 20/40/60-min. dehumidistat or push button and test it
push-button timer right beside the unit using another shorter
does not work OR its wire. If it works there, change the wire.
indicator light does not If it doesn’t, change the dehumidistat or
stay on. the push button.

Start-up troubleshooting:

NOTE: Be sure to unplug and inspect the unit before proceeding with these steps.

13.0

Troubleshooting

B
G

VE0082

VE0081

OL
OC

32

Problems Possible causes You should try this

5. 20-min. wireless push • Plastic tab on batteries has not • Remove the tab, program memory of receiver and try
button timer doesn’t work. been removed from push button. again (see Section 8.3).

• Poor location for push button • Use 1/4” to 1/2” wood shims to move off the surface or
and/or receiver. try different locations.

• Light indicator flashes while • Low batteries. Open push button casing and change
activating the push button. batteries. (Refer to user manual.)

• Push button batteries are dead. • Open push button casing and change batteries.

(Refer to user manual.)

• Push button not properly • Re-program the memory of the receiver (refer to
programmed in receiver or the Section 8.3).
switch on the back of the push
button is not at “instant” position.

• Receiver not properly wired. • Ensure that the wires have been connected to their

appropriate places (see Section 8.4).

• The wires may be broken. • Inspect every wire and replace any that are damaged.

• There may be a short-circuit. • With the help of a multimeter, check for continuity.

6. The defrost cycle • Ice deposits may be hindering • Remove the ice.
does not work the damper operation.
(the fresh air duct is
frozen OR the fresh air •The damper rod or the port • Inspect these parts and replace if necessary.
distributed is very cold damper itself may be broken.
OR the “AIR EXCHANGE”
light flashes). • The damper actuator may • Plug in the unit and select “MIN” or “MAX”. Press the

be defective. door switch and see if the port damper opens. If it doesn’t

open, feed 120V directly to the damper actuator. If the

port damper still doesn’t open, replace the damper

actuator.

• The circuit board may • Unplug the unit. Unplug the defrost sensor wire (see J4
be defective. on electrical diagram Section 9.0). Plug the unit back in.

Select “MIN” and make sure the unit is adjusted for low speed
operation (turn all dehumidistats maximum counterclockwise).

Wait 3 minutes. The unit should switch to high speed
and the damper at the fresh air intake port should close
(defrost mode). If this doesn’t happen, then replace the
circuit board.

• The thermistor may be • If the defrost mode works well after having disconnected
defective. the thermistor wire (above test), this means the thermistor

is probably defective. You should replace it.

13.0

Troubleshooting (cont’d)

14.0

References

D

• HVI, “Installation Manual for Heat Recovery Ventilators”, 1987 edition.

• ASHRAE 1984 Systems Handbook, chapter 11, “Air Distribution Design for
Small Heating and Cooling Systems”.

R 2000

Venmar Quality

Assurance

LISTE