resideo SmartValve SV9541 User manual

INSTALLATION INSTRUCTIONS
69-2012-01
SV9541, SV9641 SmartValve™
System Controls
APPLICATION
The SV9541 and SV9641 SmartValve™ System Controls
combine gas flow control and electronic intermittent
pilot sequencing functions into a single unit. The Q3450
or Q3480 Pilot hardware supplies the low voltage igniter,
flame sensor and pilot burner. These ignition system
controls provide all gas ignition safety functions by
controlling gas flow, ignition source, and a 120 Vac or
240 Vac combustion air blower. The controls also
monitor the appliance airflow proving switch and limit
string to assure proper appliance operation, and provide
prepurge, postpurge, and timed trial for pilot ignition
with 100 percent shutoff and continuous retry. A
diagnostic LED indicates system status.
These controls communicate directly with an electronic
fan timer (ST9160 Electronic Fan Timer for single stage
applications; ST9162 Electronic Fan Timer for two-stage
applications) in typical forced warm air furnace
applications. They also interface with the 208907
Terminal Board, providing compatibility with power
stealing thermostats. Or, they directly interface with the
appropriate power supplies and a system thermostat for
additional appliance applications. When controlled
directly by a thermostat, these controls do not provide a
postpurge function, because power to the control is
removed when the thermostat call for heat ends.
The SV9541 and SV9641 Systems are suitable for a wide
range of fan-assisted combustion gas-fired appliances
including furnaces, rooftop furnaces, boilers, unit
heaters, infrared heaters, water heaters and commercial
cooking appliances. The specific application of the
SmartValve™ System is determined by the appliance
manufacturer.
SmartValve™ System controls are available in a range of
valve capacities, see Table 1. (Table 2 provides gas
capacity conversion factors.) The suffix letter indicates
temperature range and regulator type, see Table 3.
aCapacity based on 1000 Btu/ft3, 0.64 sp gr natural gas at 1 in. wc pressure drop (37.3 MJ/m3, 0.6 sp gr natural gas
at 0.25 kPa pressure drop).
bCapacity is reduced by 5 percent when using an outlet screen.
cValves are guaranteed at only 77 percent of the rating.
dMinimum regulation for LP gas is 40,000 Btuh.
Table 1. Valve Capacitya.
Model
Size
(Inlet x
Outlet) (in.)
AGA Certified Capacity for
Natural Gas
AGA Certified Minimum
Regulation for Natural Gas
AGA Certified Maximum
Regulation for Natural Gas
ft3/hr m3/hr ft3/hr m3/hr ft3/hr m3/hr
SV9541 1/2 x 1/2 150 4.2
20d0.6 200 5.7
SV9641b,c 3/4 x 3/4 300 8.5 415 11.8
Table 2. Gas Capacity Conversion Factor.
Gas Specific Gravity
Multiply Listed
Capacities By
Manufactured 0.60 0.516
Mixed 0.70 0.765
Propane 1.53 1.62
Table 3. Model Number Suffix Letter Designation.
Model No.
Suffix Letter
Ambient
Temperature
Range
Pressure
Regulator Type
M-40°F to 175°F
(-40°C to 79°C)
Standard
QTwo-stage

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
69-2012—01 2
SPECIFICATIONS
IMPORTANT
These ignition system controls provide only
direct replacement. See Table 12 for a list of
controls these replace. Use the Y8610 to convert
standing pilot systems to electronic ignition
systems.
Body Pattern:
Straight through; see Table 1 for inlet and outlet size.
Electrical Ratings:
System Transformer: 40 VA minimum NEMA rated.
NOTE: Larger system transformer may be required for
specific applications.
Voltage and Frequency: 24 Vac, 60 Hz; 50 Hz models
available.
Output Ratings:
Igniter Load: 1.5A maximum.
Induced Draft Motor Load: 2.5A Full Load, 10A. Locked
Rotor at 120 Vac; 1.75A Full Load, 5A. Locked Rotor
at 240 Vac.
24V Thermostat Current: 0.25A in run mode, with control
connected directly to thermostat.
Prepurge Time (Factory-set):
15 seconds.
Trial for Ignition:
90 seconds.
Postpurge Time (Factory-set):
30 seconds. (Not available when SmartValve™ System
Control is connected directly to thermostat.)
Retry Delay:
5 minutes.
Flame Failure Response Time:
1.6 seconds maximum at 2 μA.
Capacity:
See Table 1.
Conversion:
Use conversion factors in Table 2 to convert capacities
for other gases.
Regulation Range:
See Table 1.
Natural-LP Gas Conversion Kits:
See Table 4.
Pipe Adapters:
Angle and straight adapters available for 3/8-, 1/2- and
3/4-in. pipe. See Table 5. Flange kits include one flange
with attached O-ring, four mounting screws, a 9/64 in.
hex wrench and instructions.
Approvals:
International Approval Services (IAS): Design Certified
C2030025.
aFlange kits include one flange, one O-ring and four
mounting screws.
b Do not use flanges on control models with 3/4 in. inlet
and 3/4 in. outlet. On models with 1/2 in. inlet and 3/4
in. outlet, use flanges only on the 1/2 in. inlet side.
PLANNING THE INSTALLATION
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury, or
death.
Follow these warnings exactly:
1. Plan the installation as outlined below.
2. Plan for frequent maintenance as described in
the Maintenance section.
Heavy demands are made on the gas controls when
intermittent pilot systems are used on central heating
equipment in barns, greenhouses, and commercial
properties and on heating appliances such as
commercial cookers, agricultural equipment, industrial
heating equipment and pool heaters.
Special procedures may be required to prevent nuisance
shutdowns and control failure due to frequent cycling,
severe environmental conditions related to moisture,
corrosive chemicals, dust or excessive heat. These
applications require Resideo Engineering review; contact
your Sales Representative for assistance.
Review the following conditions that can apply to your
specific installation and follow the precautions
suggested.
Frequent Cycling
This control is designed for use on appliances that
typically cycle three to four times an hour only during the
heating season. In year-around applications with greater
cycling rates, the control can wear out more quickly.
Perform a monthly checkout.
Water or Steam Cleaning
If a control gets wet, replace it. If the appliance is likely to
be cleaned with water or steam, protect (cover) the
control and wiring from water or steam flow. Mount the
control high enough above the bottom of the cabinet so it
does not get wet during normal cleaning procedures.
Table 4. Natural-LP Gas Conversion Kits.
Model No.
Suffix
Letter
Kit to Convert
Natural Gas to LP
Kit to Convert LP to
Natural Gas
M 393691 394588
Q 396021 396025
Table 5. Flange Adapter Part Numbers.
Inlet/Outlet
Pipe Size
(in. NPT)
Flange
Type
Part No.a,b
Without Hex
Wrench
With Hex
Wrench
3/8 Straight 393690-1 393690-11
3/8 Elbow 393690-2 393690-12
1/2 Straight 393690-6 393690-16
1/2 Elbow 393690-3 393690-13
3/4 Straight 393690-4 393690-14
3/4 Elbow 393690-5 393690-15

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
369-2012—01
High Humidity or Dripping Water
Dripping water can cause the control to fail. Never install
an appliance where water can drip on the control. In
addition, high ambient humidity can cause the control to
corrode and fail. If the appliance is in a humid
atmosphere, make sure air circulation around the control
is adequate to prevent condensation. Also, regularly
check out the system.
Corrosive Chemicals
Corrosive chemicals can attack the control, eventually
causing a failure. If chemicals are used for routine
cleaning, avoid contact with the control. Where
chemicals are suspended in air, as in some industrial or
agricultural applications, protect the control with an
enclosure.
Dust or Grease Accumulation
Heavy accumulations of dust or grease can cause the
control to malfunction. Where dust or grease can be a
problem, provide covers for the control to limit
contamination.
Heat
Excessively high temperatures can damage the control.
Make sure the maximum ambient temperature at the
control does not exceed the rating of the control. If the
appliance operates at very high temperatures, use
insulation, shielding, and air circulation, as necessary, to
protect the control. Proper insulation or shielding should
be provided by the appliance manufacturer; verify proper
air circulation is maintained when the appliance is
installed.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury or
death.
Follow these warnings exactly:
1. Disconnect power supply before wiring to
prevent electrical shock or equipment damage.
2. To avoid dangerous accumulation of fuel gas,
turn off the gas supply at the appliance service
valve before starting installation, and perform
Gas Leak Test after installation is complete.
3. Do not bend pilot tubing at ignition system
control or pilot burner after compression fitting
is tightened, or gas leakage at the connection
can result.
4. Always install a sediment trap in the gas
supply line to prevent contamination of the
ignition system control.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
1. Disconnect power supply before installation.
2. Never apply a jumper across or short any of the
terminals in the SV9541 or SV9641 wiring
harness. This can damage the system
transformer or the control.
Follow the appliance manufacturer instructions, if
available; otherwise, use these instructions as a guide.
IMPORTANT
These ignition system controls are shipped with
protective seals over the inlet and outlet
tappings. Do not remove the seals until ready to
install adapters or connect the piping.
Converting Ignition System Control
from Natural Gas to LP Gas (or LP
Gas to Natural Gas)
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury, or
death.
1. Do not attempt to convert step-opening
models (suffix letter P).
2. Always change the main and pilot burner
orifices when converting from natural to LP
gas or from LP to natural gas. Carefully follow
appliance manufacturer specifications and
instructions to assure proper appliance
conversion.
3. Ignition system controls are factory-set for
natural (and manufactured) or LP gas. Do not
attempt to use an ignition system control set
for natural (manufactured) gas on LP gas, or an
ignition system control set for LP gas on
natural (manufactured) gas.
Ignition system controls with standard, slow-opening,
and two-stage regulators (model numbers with suffix H,
K, M, or Q) can be converted from one gas to the other
with a conversion kit (ordered separately). See Table 4 to
select the appropriate conversion kit.
Install Adapters To Control
If adapters are being installed on the control, mount them
as follows:
Flanges
1. Choose the appropriate flange for your application.
2. Remove the seal over the ignition system control
inlet or outlet.
3. Make sure that the O-ring is fitted in the groove of
the flange. If the O-ring is not attached or is
missing, do not use the flange.
4. With the O-ring facing the ignition system control,
align the screw holes on the ignition system
control with the holes in the flange. Insert and
tighten the screws provided with the flange. See
Fig. 1. Tighten the screws to 25 inch-pounds of
torque to provide a gas-tight seal.

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
69-2012—01 4
Bushings
1. Remove the seal over the ignition system control
inlet or outlet.
2. Apply a moderate amount of good quality pipe
compound to the bushing, leaving two end threads
bare. On an LP installation, use compound that is
resistant to LP gas. Do not use Teflon tape.
3.
Insert the bushing in the ignition system control and
carefully thread the pipe into the bushing until tight.
Complete the instructions below for installing the piping,
installing the control, and connecting the pilot tubing and
wiring. Make sure the leak test you perform on the
control after completing the installation includes leak
testing the adapters and screws. If you use a wrench on
the valve after the flanges are installed, use the wrench
only on the flange, not on the control. See Fig. 4.
Location
The ignition system controls are mounted in the
appliance vestibule on the gas manifold.
Fig. 1. Firmly fasten flange to valve, but do not
overtighten screws.
Install Piping to Control
All piping must comply with local codes and ordinances
or with the National Fuel Gas Code (ANSI Z223.1, NFPA
No. 54), whichever applies. Tubing installation must
comply with approved standards and practices.
1. Use new, properly reamed pipe that is free from
chips. If tubing is used, make sure the ends are
square, deburred and clean. All tubing bends must
be smooth and without deformation.
2. Run pipe or tubing to the ignition system control. If
tubing is used, obtain a tube-to-pipe coupling to
connect the tubing to the ignition system control.
3. Install a sediment trap in the supply line to the
ignition system control. See Fig. 2.
Install Control
1. Mount 0 to 90 degrees in any direction, including
vertically, from the upright position of the ignition
system control switch.
2. Mount so the gas flow is in the direction of the
arrow on the bottom of the ignition system control.
3.
Thread the pipe the amount shown in Table 6 for
insertion into ignition system control or adapters.
Do not thread pipe too far. Valve distortion or
malfunction can result if the pipe is inserted too
deeply.
4. Apply a moderate amount of good quality pipe
compound (do not use Teflon tape) only to the pipe,
leaving two end threads bare. On LP installations,
use a compound resistant to LP gas. See Fig. 3.
Fig. 2. Sediment trap installation.
M12168A
VALVE OUTLET
FLANGE
9/64 INCH
HEX
SCREWS
(4)
1
1DO NOT USE FLANGES ON 3/4 IN. INLET
AND 3/4 IN. OUTLET MODELS, AND ON
THE 3/4 IN. OUTLET SIDE OF 1/2 IN.
INLET AND 3/4 IN. OUTLET MODELS.
Table 6. NPT Pipe Thread Length (in.).
Pipe
Size
Thread Pipe This
Amount
Maximum Depth Pipe can
be Inserted into Control
3/8 9/16 3/8
1/2 3/4 1/2
3/4 13/16 3/4
HORIZONTAL
DROP
PIPED
GAS
SUPPLY
PIPED
GAS
SUPPLY
3 IN.
(76 MM)
MINIMUM
3 IN.
(76 MM)
MINIMUM
RISER
IGNITION
SYSTEM
CONTROL
TUBING
GAS
SUPPLY
HORIZONTAL
DROP
3 IN.
(76 MM)
MINIMUM
RISER
M3343D
1
IGNITION
SYSTEM
CONTROL
IGNITION
SYSTEM
CONTROL
1
CAUTION
GAS LEAKAGE HAZARD.
FAILURE TO FOLLOW PRECAUTIONS CAN RESULT IN A GAS-FILLED
WORK AREA. SHUT OFF THE MAIN GAS SUPPLY BEFORE
REMOVING END CAP. TEST FOR GAS LEAKAGE WHEN
INSTALLATION IS COMPLETE.
ALL BENDS IN METALLIC TUBING MUST BE SMOOTH.

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
569-2012—01
Fig. 3. Use moderate amount of pipe compound.
5. Remove the seals over the ignition system control
inlet and outlet if necessary.
6. Connect the pipe to the ignition system control
inlet and outlet. Use a wrench on the square ends
of the ignition system control. If a flange is used,
place the wrench on the flange rather than on the
ignition system control. Refer to Fig. 4.
Connect Pilot Gas Tubing
1. Cut tubing to the desired length and bend as
necessary for routing to the pilot burner. Do not
make sharp bends or deform the tubing. Do not
bend the tubing at the ignition system control after
the compression nut is tightened because this can
result in gas leakage at the connection.
2. Square off and remove burrs from the end of the
tubing.
3. Unscrew the brass compression fitting from the
pilot outlet (Fig. 5). Slip the fitting over the tubing
and slide out of the way. See Fig. 6.
4. Push the tubing into the pilot gas tapping on the
outlet end of the control until it bottoms. While
holding the tubing all the way in, slide the fitting
into place and engage the threads, then turn until
finger tight. Tighten one more turn with a wrench,
but do not overtighten.
5. Connect the other end of the tubing to the pilot
burner according to the instructions supplied with
the Q3450/Q3480.
NOTE: The pilot tubing provides the SmartValve™
System flame sense current path. Make sure the
connections are clean and tight for proper
operation.
WIRING
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the general instructions
provided below. When these instructions differ from the
appliance manufacturer, follow the appliance
manufacturer instructions.
All wiring must comply with applicable electrical codes
and ordinances.
Fig. 4. Proper use of wrench on ignition system control with and without flanges.
TWO
IMPERFECT
THREADS
IGNITION
SYSTEM
CONTROL
THREAD PIPE THE AMOUNT
SHOWN IN TABLE FOR INSERTION
INTO IGNITION SYSTEM CONTROL
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND ONLY TO PIPE
(LEAVE TWO END THREADS BARE).
M3344
PIPE
A
PPLY WRENCH FROM TOP OR
BOTTOM OF IGNITION SYSTEM
CONTROL TO EITHER SHADED AREA
WHEN FLANGE IS NOT USED
APPLY WRENCH
TO FLANGE ONLY
WHEN FLANGE IS USED
M12169A

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
69-2012—01 6
Fig. 5. Top view of ignition system control.
Fig. 6. Always use new compression fitting.
Disconnect power supply before making wiring
connections to prevent electrical shock or equipment
damage:
1. Check the power supply rating on the ignition
system control and make sure it matches the
available supply. The system transformer should
be NEMA rated for 40 VA or larger. An appliance
system power review is recommended. Install a
transformer, thermostat and other controls, as
required.
2. With 120 Vac power supply, connect the 120V hot
lead to:
a. L1 on the ST9160 or 208907 Terminal Board
b. 120 Vac line on the ST9162.
With 240 Vac power supply, there must not be more
than 120 Vac potential between L1 or 120 LINE and
the appliance chassis.
3. Verify that the appliance chassis has reliable
connection to earth ground.
4. Connect control circuit to the ignition system
control using the keyed connector. See Fig. 7
through 11.
M10965A
HI-LO
ADJUSTMENT SCREWS
(UNDER CAP)
REGULATOR
VENT COVER
INLET
HI
LO
OFF
ON
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
INLET
PRESSURE
TAP
INLET
IGNITION SYSTEM
CONTROL SWITCH
CONTROLS
CONNECTOR
PILOT
OUTLET
OUTLET
OUTLET
PRESSURE
TAP
IGNITER
CONNECTOR LINE VOLTAGE
CONNECTOR
C1 C2
C3
IGNITION SYSTEM CONTROL
TIGHTEN NUT ONE TURN
BEYOND FINGER TIGHT
FITTING BREAKS OFF AND CLINCHES
TUBING AS NUT IS TIGHTENED
TO PILOT
BURNER
M3346

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
769-2012—01
Fig. 7. Typical wiring connections in fan-assisted warm air furnace with ST9160 Electronic Fan Timer.
C1
P1
C2
C3
40 VA
TRANSFORMER
CONT
EAC
HEAT
HUM
M2
MOTOR
PARKING
TERMINALS M1
L1
NEUTRALS
24 VAC
RWC
COM
XFMR COOL
LOAD
COMMON
M12176D
SV9440
SV9540
SV9640
AIR PROVING
SWITCH
NEUTRAL
HOT
ROLLOUT
SWITCH
LIMIT
SWITCH
AUXILIARY
LIMIT SWITCH
(OPTIONAL)
COMBUSTION
AIR BLOWER
AIR
DATA
NEUTRAL
1
2
ELECTRONIC
AIR CLEANER
CIRCULATING
FAN
HUMIDIFIER
L2
L1
(HOT)
TO 120/240VAC, 60 HZ
POWER SUPPLY
THERMOSTAT
R
24 VAC
R
C
WY
YG
G
ST9160
ELECTRONIC
FAN TIMER
Q3450
IGNITER-
SENSOR
L1
POWER SUPPLY.PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
FOR 120 VAC INSTALLATIONS, CONNECT THE 120V (HOT) LEAD TO L1 ON ST9160.
FOR 240 VAC INSTALLATIONS, THERE MUST BE NO MORE THAN 120 V BETWEEN
L1 AND APPLIANCE CHASSIS.
1
2
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
6
6
7
8

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
69-2012—01 8
Fig. 8. Typical wiring connections with 208907 Terminal Board.
Fig. 9. Typical wiring connections direct to the thermostat.
C1
P1
C2
C3
40 VA
TRANSFORMER
CONT
EAC
HEAT
HUM
M2
MOTOR
PARKING
TERMINALS M1
L1
NEUTRALS
24 VAC
RWC
COM
XFMR COOL
LOAD
COMMON
M12174D
SV9440
SV9540
SV9640
AIR PROVING
SWITCH
NEUTRAL
HOT
ROLLOUT
SWITCH
LIMIT
SWITCH
AUXILIARY
LIMIT SWITCH
(OPTIONAL)
COMBUSTION
AIR BLOWER
AIR
DATA
NEUTRAL
1
2
ELECTRONIC
AIR CLEANER
CIRCULATING
FAN
HUMIDIFIER
L2
L1
(HOT)
TO 120/240 VAC, 60 HZ
POWER SUPPLY
THERMOSTAT
R
24 VAC
R
C
WY
YG
G
ST9160
ELECTRONIC
FAN TIMER
Q3450
IGNITER-
SENSOR
L1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
FOR 120 VAC INSTALLATIONS, CONNECT THE 120V (HOT) LEAD TO L1 ON ST9160.
FOR 240 VAC INSTALLATIONS, THERE MUST BE NO MORE THAN 120 V BETWEEN
L1 AND APPLIANCE CHASSIS.
1
2
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
6
6
7
8
C1
C2
C3
40 VA
TRANSFORMER
L1 L2
LOAD
COMMON
THERMOSTAT
M12172D
PRESSURE
SWITCH
NEUTRAL
HOT
L2
L1
(HOT)
TO
120/240 VAC, 60 HZ
POWER SUPPLY
ROLLOUT
SWITCH
LIMIT
SWITCH
INDUCER
BLOWER
MOTOR
R
R
W
24 VAC
Q3450
IGNITER-
SENSOR
AIR
DATA
SV9440
SV9540
SV9640
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
FOR 120 VAC INSTALLATIONS, CONNECT THE 120V (HOT)
LEAD TO L1. FOR 240 VAC INSTALLATIONS, THERE MUST
BE NO MORE THAN 120V BETWEEN L1 AND APPLIANCE
CHASSIS.
DATA AND R LINES MUST BE CONNECTED TO W ON
THERMOSTAT FOR PROPER SYSTEM OPERATION.
THERMOSTAT MUST HAVE ZERO OFF-STATE CURRENT
DRAW. MECHANICAL SWITCH THERMOSTATS
RECOMMENDED. TRIAC SWITCH THERMOSTATS OR
POWER-STEALING THERMOSTATS ARE NOT
RECOMMENDED.
IN THIS APPLICATION, POSTPURGE FUNCTION IS NOT
AVAILABLE AND THE LED FUNCTIONS ONLY DURING A
CALL FOR HEAT.
1
2
1
2
4
4
5
5
3
3
1
1
5
6
7
8
12
2
23
3
3
4
4
4

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
969-2012—01
Fig. 10. Typical boiler wiring diagram.
C1
C2
C3
L1
L2
24 VAC
M12398D
AIR PROVING
SWITCH
AQUASTAT®
CONTROL
NEUTRAL
HOT
ROLLOUT
SWITCH
LIMIT
SWITCH
COMBUSTION
AIR BLOWER
AIR
DATA
R
24V THERMOSTAT
C
R8285D CONTROL CENTER Q3450
IGNITER-
SENSOR
SV9440
SV9540
SV9640
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
CONNECT THE 120V (HOT) LEAD AS SHOWN.
DATA AND R LINES MUST BE CONNECTED TO AQUASTAT CONTROL FOR PROPER
SYSTEM OPERATION.
IN THIS APPLICATION, POSTPURGE FUNCTION IS NOT AVAILABLE AND THE LED
FUNCTIONS ONLY DURING A CALL FOR HEAT.
1
2
3
4
4
CIRCULATOR
RC
GY
W
13
46
L2
L1
(HOT)
1
2
3
TO 120 VAC, 60 HZ
POWER SUPPLY
1
1
5
6
7
8
12
2
23
3
3
4
4
4

SV9541, SV9641 SMARTVALVE™ SYSTEM CONTROLS
69-2012—01 10
Fig. 11. Typical wiring connections for two-stage application with ST9162 Electronic Fan Timer.
STARTUP AND CHECKOUT
Ignition System Control Switch
Settings
Ignition system control switch settings are as follows:
OFF: Prevents pilot and main gas flow through the
ignition system control.
ON: Permits gas to flow through the control body. At
the appropriate time in the appliance operation,
main gas can flow to the main burner.
NOTE: Controls are shipped with the ignition system
control switch in the ON position. If the
appliance is operated with the ignition system
control switch in the OFF position, the system
will respond like the air proving switch is stuck
in the no airflow position.
Turn on Main Burner
Follow the appliance manufacturer instructions or turn
up the thermostat to call for heat.
Perform Gas Leak Test
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury or
death.
Perform Gas Leak Test every time work is done
on a gas system.
IMPORTANT
Do not spray soap and water solution on the
SmartValve™ housing. Do not use an excessive
amount of soap and water solution to perform
the gas leak test. These can damage the
control.
12
34
34 2 1
2
6
1
5
4
83
7
2
69
1
5
4
8
3
7
SMART
VALVE II
INTERMITTENT
PILOT
ST9162
FAN BOARD
(TYPICAL)
2
6
1
5
4
3
1234
ON
G
YW1W2C
R
COM 24 VAC
CONT
HUM
EAC
COOL
HEAT H
M1
M2
NEUTRALS
L1
XFMR
MTR
IND HIGH
IND IN
IND LOW
HEAT LOW
THERMOSTAT
CONTINUOUS FAN SPEED
NEUTRAL
COOL SPEED
HEAT HIGH SPEED
HEAT LOW SPEED
INDUCER LOW
INDUCER HIGH
NEUTRAL
AIR
LO
HI
INDUCER
MAIN
BLOWER
ROLLOUT
SWITCH
PRESSURE
SWITCH
LIMIT
SWITCH
40VA
TRANSFORMER
24 VAC
COM
LOAD
COM
NEUTRAL
NEUTRAL
SW SPST
F1
FUSE
L1
L1
L2 (NEUTRAL)
L1
INDUCER IN
INDUCER RETURN
SENSE
24 VAC HI
HSI N
2 STAGE
-
+
DATA
24 VAC
R
C
M10969D
C (MTR PIN3)
Y (MTR PIN2)
G (MTR PIN1)
W2 (MTR PIN5)
W1 (MTR PIN6)
Y2 (MTR PIN4)
1
1
GROUPED CABLE
Q3450
IGNITER-
SENSOR
SV9440
SV9540
SV9640
C1
C2
C3