Stelpro SCV Series User manual

INSSCV1217
SCV SERIES
AIR HANDLER
REPLACEMENT COMPONENT LIST INCLUDED
For further information or to consult this guide online, please visit our website at www.stelpro.com
This unit
complies with
UL standards
This section must be read carefully by the installer.
The installer must also read the user’s guide since it contains other important information.
INSTALLATION GUIDE
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2INSSCV1217
Before installing and operating this product, the user and/or installer must read, understand and follow these instructions and keep them handy for future reference.
If these instructions are not followed, the warranty will be considered null and void and the manufacturer deems no further responsibility for this product.
This product must be installed by a qualied person and connected by a certied electrician, according to the electrical and building codes effective in
your region.
The following instructions must be adhered to in order to avoid personal injuries or property damages, serious injuries and potentially fatal electric shocks.
Protect the unit with the appropriate circuit breaker or fuse, in accordance with the local and national electric codes.
Make sure the line voltage (volt) is consistent with that indicated on the unit’s nameplate.
This unit must be grounded.
Switch off the power at the circuit breaker/fuse before installing, repairing and cleaning the unit.
Make sure the unit is appropriate for the intended use (if needed, refer to the product catalog or a representative).
Respect distances and positions indicated in the installation section.
If the installer or user modies the unit, they will be held responsible for any damage resulting from this modication, and the UL certication will be void.
This unit must not come into contact with a water source and must be protected from splashes (e.g. a wet mop). Do not use if any part has been immersed. Moreover,
do not turn it on or off when standing in water or if your hands are wet.
When cutting a piece of steel for the installation of the return duct, be careful not to damage the electrical wiring of the unit.
Do not insert or allow foreign objects to enter any air vent as this may cause electric shocks, res, or damages to the unit.
This unit has hot and arcing or sparking parts inside. It is not designed to be used or stored in wet areas or areas containing ammable liquids, combustible materials
or corrosive, abrasive, chemical, explosive and ammable substances such as, but not limited to, gasoline, paint, chlorine and cleaning products.
Some areas are dustier than others. Thus, it is the user’s responsibility to evaluate if the lter must be changed based on the amount of dirt accumulated on
it. Accumulated dirt can lead to a component malfunction or discoloration (yellowing). It may cause a re hazard if not installed and maintained in accordance with
these instructions.
If the unit is damaged or defective, cut off power supply at circuit breaker/fuse and call a certied repair center. (Refer to the limited warranty).
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
WARNING
Note: When a part of the product specication must be changed to improve operability or other functions, priority is given to the product specication itself. In such
instances, the instruction manual may not entirely match all the functions of the actual product. Therefore, the actual product and packaging, as well as the name
and illustration, may differ from the manual.

3INSSCV1217
TYPE VOLTS AMPS HP CFM HEIGHT
(IN)
WIDTH
(IN)
DEPTH
(IN) LB KG
SCV-P-401 120 4.6 1/3 400 18 14 20 3/4 40 18.2
SCV-P-441 120 4.6 1/3 400 18 14 20 3/4 40 18.2
SCV-P-442 240/208 2.2/2.3 1/3 400 18 14 20 3/4 40 18.2
SCV-P-411 120 4.6 1/3 400 18 14 20 3/4 40 18.2
SCV-P-412 240/208 2.2/2.3 1/3 400 18 14 20 3/4 40 18.2
SCV-P-601 120 4.6 1/3 600 18 14 20 3/4 40 18.2
SCV-P-641 120 4.6 1/3 600 18 14 20 3/4 40 18.2
SCV-P-642 240/208 2.2/2.3 1/3 600 18 14 20 3/4 40 18.2
SCV-P-611 120 4.6 1/3 600 18 14 20 3/4 40 18.2
SCV-P-612 240/208 2.2/2.3 1/3 600 18 14 20 3/4 40 18.2
SCV-P-841 120 4.6 1/3 800 20 18 22 3/4 50 22.7
SCV-P-811 120 4.6 1/3 800 20 18 22 3/4 50 22.7
SCV-P-812 240/208 2.2/2.3 1/3 800 20 18 22 3/4 50 22.7
SCV-P-1041 120 4.6 1/3 1000 20 18 22 3/4 50 22.7
SCV-P-1011 120 4.6 1/3 1000 20 18 22 3/4 50 22.7
SCV-P-1012 240/208 2.2/2.3 1/3 1000 22 22 24 3/4 60 27.3
SCV-P-1401 120 6.2 1/2 1400 22 22 24 3/4 60 27.3
SCV-P-1402 240/208 3.3/3.3 1/2 1400 22 22 24 3/4 60 27.3
SCV-P-1411 120 6.2 1/2 1400 22 22 24 3/4 60 27.3
SCV-P-1412 240/208 3.3/3.3 1/2 1400 22 22 24 3/4 60 27.3
SCV-P-2202 240/208 5.1/5.1 1 2200 26 26 28 3/4 80 36.4
SCV-P-2212 240/208 5.1/5.1 1 2200 26 26 28 3/4 80 36.4
SCV-E-611* 120 6.2 1/2 300 to 600 18 14 20 3/4 40 18.2
SCV-E-612* 240/208 2.2/2.3 1/2 300 to 600 18 14 20 3/4 40 18.2
SCV-E-1011* 120 6.2 1/2 300 to 1000 20 18 22 3/4 50 22.7
SCV-E-1012* 240/208 2.2/2.3 1/2 300 to 1000 20 18 22 3/4 50 22.7
SCV-E-1411* 120 6.2 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-1412* 240 3.9 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-1421* 120 6.2 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-1422* 240 3.9 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-1431* 120 6.2 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-1432* 240 3.9 1/2 300 to 1400 22 22 24 3/4 60 27.3
SCV-E-2211* 120 11.5 1 400 to 2200 26 26 28 3/4 80 36.4
SCV-E-2212* 240 6.9 1 400 to 2200 26 26 28 3/4 80 36.4
SCV-E-2221* 120 11.5 1 400 to 2200 26 26 28 3/4 80 36.4
SCV-E-2222* 240 6.9 1 400 to 2200 26 26 28 3/4 80 36.4
SCV-E-2231* 120 11.5 1 400 to 2200 26 26 28 3/4 80 36.4
SCV-E-2232* 240 6.9 1 400 to 2200 26 26 28 3/4 80 36.4
* CFM ADJUSTABLE WITH POTENTIOMETER. MAXIMUM CFM MEASURED AT 0.5’’ H2O OF STATIC PRESSURE
FOR MODEL SCV-E TO 800 CFM, ORDER A SCV-E-10XX
FOR MODEL SCV-E TO 400 CFM, ORDER A SCV-E-6XX.
SPECIFICATIONS
NOMENCLATURE DESCRIPTION SCV-E-14 0 2
AIR HANDLER
TYPE OF MOTOR: -P = PSC
-E = ECM
CFM X 100
TYPE OF CONTROL: -0 = NO CONTROL
-1 = LOCAL
-2 = REMOTE 4’ *
-3 = REMOTE 10’ *
-4 = LOW VOLTAGE CONTROL
* Options 2 and 3 are available only with speed of 1400 and 2200 CFM
LINE VOLTAGE: -1 = 120 V
-2 = 240/208 V

4INSSCV1217
TECHNICAL DRAWINGS
FRONT
DISCHARGE
TOP
RETURN
TYPICAL ON
BOTH SIDES
SIDE
20 3/4"
18"
14"
11 3/4" 1 1/8"
1 1/8" 15 3/4" 2 1/8"
KO Ø1 1/8'' & 7/8''
[29mm & 22mm]
KO Ø7/8''
[22mm]
15 3/4"
11 3/4"
RETURN
TYPICAL ON
BACK AND
BOTTOM
BACK
11 3/4"
2 7/8"
15 3/4" 15 3/4"
FRONT
DISCHARGE
TOP
RETURN
TYPICAL ON
BOTH SIDES
SIDE
22 3/4"
20"
18"
KO Ø1 1/8'' & 7/8''
[29mm & 22mm]
15 3/4" 1 1/8"
1 1/8" 17 3/4" 2 1/8"2 7/8"
KO Ø7/8''
[22mm]
17 3/4"
15 3/4"
RETURN
TYPICAL ON BACK
AND BOTTOM
BACK
15 3/4"
17 3/4" 17 3/4"
400 & 600 CFM
800 & 1000 CFM

5INSSCV1217
1400 CFM
2200 CFM
FRONT
DISCHARGE
TOP
RETURN
TYPICAL ON BOTH
SIDES, BACK AND
BOTTOM
SIDE
24 3/4"
19 3/4"
19 3/4"
22"
1 1/8"
1 1/8" 2 1/8"2 7/8"
22"
KO Ø7/8''
[22mm]
KO Ø1 1/8'' & 7/8''
[29mm & 22mm]
19 3/4"
19 3/4"
RECTANGLE KO PLATE
FOR REMOTE CONTROL
19 3/4"
FRONT
DISCHARGE
TOP
RETURN
TYPICAL ON BOTH SIDES,
BACK AND BOTTOM
SIDE
26"
26"
23 3/4"
23 3/4"
23 3/4"
1 1/8" 1 1/8" 2 1/8"23 3/4"
23 3/4"
KO Ø1 1/8'' & 7/8''
[29mm & 22mm]
KO Ø7/8''
[22mm]
RECTANGLE KO PLATE
FOR REMOTE CONTROL
28 3/4"
2 7/8"

6INSSCV1217
PERFORMANCE CHARTS
400 CFM
600 CFM
800 CFM

7INSSCV1217
1000 CFM
1400 CFM
2200 CFM

8INSSCV1217
N.B. Cut off power supply at circuit breaker/fuse before proceeding with installation.
Please note that each air handler is factory inspected before shipping in order to ensure that every component is operating efciently.
The SCV series air handler is available in several models of various capacities (from 400 to 2200 CFM). Since they are multi-positions units, all
models adapt easily to many applications and are suitable for horizontal, upow and downow operations as shown in Fig. 5. In all cases, the
air inlet can be connected on the left, right, bottom or back side of the unit. The discharge is always connected on the top side of the air handler.
When installed in vertical downow position (top side facing down), use only a ‘‘L’’ or ‘‘T’’ shaped plenum, without openings or registers directly
below the unit.
AIR HANDLER INSTALLATION
LOCATION
You must install the air handler on a dry and solid base or in a suspended ceiling. The area must be free of ammable liquids or vapors and
combustible materials. If you choose to suspend the unit, you must assemble the four (4) ‘’L’’ brackets (M-SCV39Z0) into the matching corner
slots as shown in the gure below. You must indicate to the air handler’s user the location of the switches and disconnects. He must be able to
quickly identify them in case of an emergency. Moreover, the air handler should be located, as centrally as possible, in the area to ventilate, in
order to optimize air distribution in all rooms.
CLEARANCE
The air handler is approved for ‘‘zero inch’’ clearance. It means that you can install it directly against a wall. Ducts for models of 1400 CFM and
less can also be installed with a zero inch clearance (0 inch). However, ducts for model of 2200 CFM and more must have a 1-inch clearance for
the rst 36 inches of duct. Beyond 37 inches, this clearance can be reduced to 0 inch. If you have any questions concerning clearances, please
refer to the codes effective in your region
Since it is necessary to open the door in the front to perform the air handler maintenance inspection, you must leave at least a 24-inch clearance
in front of this door.
AIR INLET
DISCHARGE
UPFLOW POSITION
AIR INLET
DISCHARGE
DOWNFLOW POSITION
COMBUSTIBLE
FLOOR
SEE EFFECTIVE
CODES FOR THE
FLOOR ADAPTOR
DISCHARGE AIR INLET
HORIZONTAL POSITION
''L'' BRACKET
M-SCV39Z0
METAL SCREW #8
FIG. 5
FIG. 6

9INSSCV1217
DUCTS
Ducts must be designed to deliver airows to the specied external static pressure. You should insulate the ducts crossing non-heated areas.
Moreover, use exible return and supply connectors in order to avoid vibrations as much as possible. To make your air handler even quieter, follow
these instructions:
1. Cover the vertical return and supply ducts with soundproong material
2. Install at most one or two elbows between registers and the return and supply connectors
3. Install exible hangers to suspend the ducts
4. Install bafes in elbows with a small radius of curvature
OPTIONAL ACCESSORIES
The air handler is equipped with all devices required for the addition of an air-conditioner or heat pump (except the heat-cool thermostat). The
refrigerant and drainage pipes must be installed either in the air handler’s supply or return duct and should not prevent you from removing the
front door of the air handler. You can also install a thermostat with an outdoor sensor or a two stage thermostat to control your air handler. For this
type of installation, refer to the instructions supplied with the thermostat as well as the air handler’s wiring diagram.
N.B. Please note that if one of these accessories is installed, you must refer to the appropriate guide.
Note that this product must be connected by a qualied electrician according to the electrical and building codes effective
in your region.
This air handler must be connected to a 120 or 240/208 volt power source, depending on the model. For 240V power supply, either copper or
aluminum wires can be used, except for 2200 CFM models where only copper wires can be used. If you want to energize the air handler at 208
VAC, you must modify a connection on the transformer’s terminal block: replace the wire connected to L2/N by the wire not connected (isolated).
Refer to the local and national electrical codes to know which wire size, fuses and circuit breakers are required.
You can also connect a 24 VAC humidier directly to the 24 VAC power supply of the air handler, e.g. on R and C terminals of the terminal block.
NO CONTROL
When the air handler is used with no controller (model # SCV-P-xx0x), the power cable must be wired through one of the two Ø7/8’’ KOE (electrical
knock outs), located on either side (right and left) of the air handler, and connected to the appropriate wires in the junction box, as shown in Fig.
7. We suggest the operator add an external switch or relay to control the air handler unit:
CONTROL BOX INSTALLATION & ELECTRICAL CONNECTIONS
USE KO Ø7/8''
ELECTRICAL
SUPPLY
INSIDE VIEW OF
JUNCTION BOX
L1
L2/N
G
EXTERNAL SWITCH
(NOT SUPPLIED BY STELPRO)
FIG. 7

10 INSSCV1217
LOW VOLTAGE CONTROL
When the air handler is used with low voltage control (model # SCV-P-xx4x), the power cable must be wired through one of the two Ø 7/8’’ KOE
(electrical knock outs), located on either side (right and left) of the air handler, and connected to the appropriate terminal blocks in the junction
box, as shown in Fig. 8. The low voltage control gives the installer the possibility to control the air handler unit with a low voltage contact, e.g. a
24V thermostat. In this case, the installer must use a different knock-out than the one used with the power cable (high voltage) and must connect
the external low voltage wires to the appropriate terminal blocks in the junction box, as shown in Fig. 8.
WITH LOCAL CONTROL BOX
When the air handler is used with a local controller (model # SCV-x-xx1x), the installer can connect the unit by passing through a knock-out
Ø7/8’’, located on either side (left and right) of the air handler cabinet, and connect to the terminal block as shown in Fig. 9. When the air handler
is properly connected, the installer can connect the controller to the thermostat by passing through a different electrical knock-out Ø7/8’’ than the
one used with the power cable (high voltage). The detailed functions of local control board connections of the thermostat are explained in the
following section.
L1 L2/NG
ELECTRICAL
SUPPLY
THERMOSTAT
USE DIFFERENT KO
Ø
7/8''
LEGEND
HIGH VOLTAGE CABLE
LOW VOLTAGE WIRE
L1
L2/N
G
LEGEND
L1 L2/N G
ELECTRICAL
SUPPLY
1 2
L1 L2/N G
12
USE DIFFERENT KO
O7/8''
EXTERNAL CONTACT LOW VOLTAGE
(NOT SUPPLIED BY STELPRO)
HIGH VOLTAGE CABLE
LOW VOLTAGE WIRE
FIG. 8
FIG. 9

11 INSSCV1217
CIR-019 CONTROL BOARD FUNCTIONS
The CIR-019 control board is used with all air handler models using a PSC motor (model # SCV-P-xxxx). The following gure represents the
control board:
Input and output descriptions
The terminal block of the control unit fan housing (shown on the right side of Fig. 9) has the following inputs and outputs:
• R: 24Vac output (18VA max) can supply an external controller or thermostat
• C: Common internal transformer
• 3: High speed control signal (24Vac)
• 2: Medium speed control signal (24Vac)
• 1: Low speed control signal (24Vac)
Priority input controls
The highest selected speed is systematically prioritized. For example, if the input of the low speed and medium are activated simultaneously, the
medium speed will be prioritized.
TYPICAL THERMOSTAT CONNECTION
The following gure shows a typical connection with a 24Vac thermostat. For more clarity, the air handler cabinet is not shown on this g. If
needed, refer to Fig. 9 to see the entire connection path.
R
R
C
3
3
2
2
1
1
24V
HIGH
MEDIUM
LOW
R
R
C
3
3
2
2
1
1
R
C
Y
W
G
THERMOSTAT
R
R
C
3
3
2
2
1
1
DETAIL A
R
C
Y
W
G
AIR
HANDLER THERMOSTAT
FIG. 10
FIG. 11

12 INSSCV1217
TYPICAL HEAT PUMP CONNECTION
The following g. 12 shows a typical connection with a 24 Vac thermostat with heat pump. For more clarity, the air handler cabinet is not shown
on this g. If needed, refer to Fig. 9 to see the entire connection path.
FIG. 12
R
R
C
3
3
2
2
1
1
R
C
Y
W
G
THERMOSTAT
C
Y
R
O/B
HEAT PUMP
C
Y
O/B
R
R
C
Y
W
G
R
R
C
3
3
2
2
1
1
DETAIL A
O/B
R
C
Y
O/B
AIR
HANDLER THERMOSTAT HEAT PUMP

13 INSSCV1217
TYPICAL HEAT PUMP AND ECOBOOT™ CONNECTION
The following g. 13 shows a typical connection with a 24Vac thermostat with heat pump and Ecoboot™ heating system (SAB, SEB & SUB se-
ries). For more clarity, the air handler cabinet is not shown on the gure. If needed, refer to Fig. 9 to see the entire connection path.
R
R
C
3
3
2
2
1
1
R
C
Y
W
G
THERMOSTAT
C
Y
R
O/B
HEAT PUMP
C
Y
O/B
R
R
C
Y
W
G
SAB
SEB
SUB
R C
G
R
R
C
3
3
2
2
1
1
DETAIL A
R
R
C
3
3
2
2
1
1
O/B
R
C
Y
O/B
AIR
HANDLER THERMOSTAT HEAT PUMP
AIR
HANDLER
ECOBOOTTM
DETAIL A
DETAIL B
B
A
FIG. 13

14 INSSCV1217
CIR-028 CONTROL BOARD FUNCTIONS
The CIR-028 control board is used with all air handler models using an ECM motor with a local control box. The following gure represents the
control board:
Input and output descriptions
The terminal block of the control unit fan housing (shown on the right side of Fig. 14) has the following inputs and outputs:
• R: 24Vac output (18VA max) can supply an external controller or thermostat
• C: Common internal transformer
• 1: Airow #1 control signal (24Vac)
• 2: Airow #2 control signal (24Vac)
• 3: Airow #3 control signal (24Vac)
Priority input controls
Input controls activate speed airow prioritizing the highest selected. If the airow #1 input is ajusted to 500 CFM and airow #2 is set to 700 CFM,
and both are activated simultaneously, airow #2 set to 700CFM will be prioritized.
Airow adjustment
The control board has three (3) independent adjustable inputs (see Fig. 13). To adjust the corresponding input to the desired airow, turn the knob
to the desired airow. Pilot lights indicate which, if any, input is activated. It should be noted that only the highest active airow will be prioritized.
TYPICAL THERMOSTAT CONNECTION
The following gure shows a typical connection with a 24Vac thermostat. For more clarity, the air handler cabinet is not shown here. If needed,
refer to Fig. 9 to see the entire connection path.
24V
CONNECT TO
ECM MOTOR
(UNDER COVER)
R
R
C
1
1
2
2
3
3
THERMOSTAT
R
C
Y
W
G
FROM ECM MOTOR
R
R
C
1
1
2
2
3
3
R
C
Y
W
G
AIR
HANDLER
THERMOSTAT
FIG. 14
FIG. 15

15 INSSCV1217
TYPICAL HEAT PUMP CONNECTION
The following g. 16 shows a typical connection with a 24 Vac thermostat with heat pump. For more clarity, the air handler cabinet is not shown
on this g. If needed, refer to Fig. 9 to see the entire connection path.
FIG. 16
R
R
C
1
1
2
2
3
3
R
C
Y
W
G
THERMOSTAT
C
Y
R
O/B
HEAT PUMP
C
Y
O/B
R
FROM ECM MOTOR
R
R
C
3
3
2
2
1
1
DETAIL A
R
C
Y
W
G
O/B
R
C
Y
O/B
AIR
HANDLER THERMOSTAT HEAT PUMP
1
1
3
3

16 INSSCV1217
TYPICAL HEATPUMP AND ECOBOOT™ CONNECTION
The following gure shows a typical connection with a 24Vac thermostat with heat pump and Ecoboot™ heating system (SAB, SEB & SUB series).
For more clarity, the air handler cabinet is not shown here. If needed, refer to Fig. 9 to see the entire connection path.
FIG. 17
R
R
C
1
1
2
2
3
3
R
C
Y
W
G
THERMOSTAT
C
Y
R
O/B
HEAT PUMP
C
Y
O/B
R
FROM ECM MOTOR
R
R
C
3
3
2
2
1
1
DETAIL A
R
C
Y
W
G
SAB
SUB
R C
G
R
R
C
1
1
2
2
3
3
O/B
R
C
Y
O/B
AIR
HANDLER THERMOSTAT HEAT PUMP
AIR
HANDLER
1
1
3
3
EC TOOBO
MT
DETAIL A
DETAIL B
B
A

17 INSSCV1217
METAL SCREW #8
2x
PLATE & CONNECTOR ASSY
REMOVE RECTANGLE KO PLATE
CONTROL BOX REMOTE INSTALLATION
When the air handler is used with a remote control box (model # SCV-E-xx2&3x), both assemblies are installed remotely from one another with a
maximum distance in between determined by the length of cable harness linking them both (HAR-091 for 120’’ long and HAR-092 for 48’’ long).
This alternate conguration does not require any changes to the unit’s high voltage wiring (refer to Fig. 9).
The installer must remove the rectangle knock-out plate located on either side (left and right) of the cabinet and install the plate and connector
assembly with two metal screws, as shown in Fig. 18 below.
The installer must determine the location of the remote control box and install it on the wall with four (4) screws, as shown in Fig. 19.
FIG. 18
FIG. 19

18 INSSCV1217
The installer must connect the air handler to the deported control box with the appropriate harness (part # HAR-091 for 120’’ length and HAR-092
for 48’’ length), as shown in Fig. 20.
CIR-020 CONTROL BOARD FEATURES
The CIR-020 is the electronic board used in the remote control box. The following gure represents the control board with the location of its
different features:
ELECTRICAL
SUPPLY
THERMOSTAT
USE KO Ø7/8''
LEGEND
HIGH VOLTAGE CABLE
LOW VOLTAGE WIRE
HAR-092 FOR 48'' LENGTH
HAR-091 FOR 120'' LENGTH
R
C
0-10V
0V
W1+
W1-
W2+
W2-
G+
G-
Y1+
Y1-
Y2+
Y2-
X1+
X1-
X2+
X2-
TEMPERATURE
SENSOR PLUG
USB
PLUG
PRESSURE
SENSOR PLUG
INPUTS
SWITCH FOR
CONTINUOUS VENTILATION
MENU
BUTTON
ADJUSTMENT
KNOB
DISPLAY
HI OFF LOW JUMPER
FIG. 20
FIG. 21

19 INSSCV1217
Input and output descriptions
The terminal block of the control unit fan housing (shown on the right side of Fig. 21) has the following inputs and outputs:
• R (output): 24Vac (18VA max) can supply an external controller or thermostat
• C: common internal transformer
• 0-10V (input): signal proportional control 0-10V or 4-20 mA (with jumper)
• 0V (input): signal common 0-10V or 4-20 mA (with jumper)
• W1+ (input): signal control 24V (AC or DC)
• W- (input): signal common W1+
• W2+ (input): signal control 24V (AC or DC)
• W2- (input): signal common W2+
• G+ (input): signal control 24V (AC or DC)
• G- (input): signal common G+
• Y1+ (input): signal control 24V (AC or DC)
• Y1- (input): signal common Y1+
• Y2+ (input): signal control 24V (AC or DC)
• Y2- (input): signal common Y2+
• X1+ (input): signal control 24V (AC or DC)
• X1- (input): signal common X1+
• X2+ (input): signal control 24V (AC or DC)
• X2- (input): signal common X2+
Inputs (W1, W2, G, Y1, Y2, X1 and X2) are all inherently identical except for their respective settings which are to be specied by the installer.
Therefore, their respective tags only serve to differentiate them in the settings menu. There is no limitation for use or modication. However,
the name can’t be changed in the screen. For example, control having an output W3 could be connected to the input Y1. Therefore, the input
programmed would appear in Y1 menu.
Jumper descriptions
Jumpers are located just beside the terminal block on the control board (refer to Fig.21) with the following descriptions:
1. 24Vac jumper conversion 0-10V to 4-20mA (let jumper location J21 empty for 0-10V control or install jumper for 4-20mA control)
2. Jumper junction between the input common 0-10V and the common of the air handler’s transformer
3. Jumper junction between the input common W1 and the common of the air handler’s transformer
4. Jumper junction between the input common W2 and the common of the air handler’s transformer
5. Jumper junction between the input common G and the common of the air handler’s transformer
6. Jumper junction between the input common Y1 and the common of the air handler’s transformer
7. Jumper junction between the input common Y2 and the common of the air handler’s transformer
8. Jumper junction between the input common X1 and the common of the air handler’s transformer
9. Jumper junction between the input common X2 and the common of the air handler’s transformer
Display
The display is located in the middle of the control board (refer to Fig. 21) and is divided into four (4) sections, as shown in Fig. 22:
1. Active input (NONE if no active input)
2. Motor speed
3. Airow
4. Active input setting
FIG. 22

20 INSSCV1217
MENU button and adjusting knob
Fan control mode can be selected by pressing and holding the “MENU” button for 16 seconds, located just under the display screen (refer to Fig.
21). The control mode menu will be displayed (see gure below) to allow the operator to choose the appropriate mode, CFM or H2O (“wc) or
RPM by using the rotating adjustment knob, located just under the “MENU” button (refer to Fig. 21). After selecting the mode, the operator must
press the mode button to validate the selection. When a mode is selected, each input is congured for the selected mode. The active input with
the highest value overrides all other inputs.
The “0-10v” analog mode requires the selection of the upper limit CFM value which will be associated to 10V. The “0-10v” input can also be
converted to accept a 4-20 mA signal.
FIG. 24
FIG. 23
FIG. 25
To access the programming menu entries, the installer must press the “MENU” button. By pressing this button, the installer can browse through all
programmable fan control inputs. To change a setting, the installer must turn the adjustment knob to obtain the desired value. When the desired
value is obtained, the installer can press the “MENU” button to continue browsing. If the same value is displayed for 8 seconds without being
selected, the interface will revert back to the main menu.