Specifications

SmartValve® System Controls
124 customer.honeywell.com 70-6910
SV9541 SmartValve® System
The TRADELINE® SV9541 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 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.
Dimensions, Approximate: 3.2 in. wide x 4.9 in. high x 4.1 in.long
(81 mm wide x 124 mm high x 104 mm long.)
Body Pattern: Straight-through
Maximum Capacity at 1 in. P.D. 150 ft
3
/hr (4.2 m
3
/hr)
Maximum Capacity: 200 ft
3
/hr (5.7 m
3
/hr)
Minimum Capacity: 20 ft
3
/hr (0.6 m
3
/hr)
Pilot Gas Outlet: Yes
Electrical Ratings: 24 Vac
Frequency: 60 Hz, 50 Hz
Control Voltage (Thermostat or other call for heat): 24 Vac, 60 Hz.
Flame Failure Response Time (sec): 1.6 sec @ 3 µA
Flame Sense: Two Rod
Ignition Sequence: Intermittent Pilot
Ignition Source: Pilot
Ignition System Type: Intermittent Hot Surface Pilot Ignition
Ignition Trial Time: 90 sec
Ignition Trials To Lockout: continuous retry
Pressure Ratings: 1/2 psi (3.5 kPa)
Pressure Tapping: 1/8 in. - NPT
Ambient Temperature Range: -40 F to +175 F (-40 C to +79 C)
Mounting: 0 to 90 degrees in any direction from the upright position of
the gas control knob, including vertically.
Approvals:
Canadian Standards Association: CSA-International, Design Certified
Product Number
Type of
Gas
Opening Characteristics
(standard, step)
Inlet/Outlet
Size (in.)
Pressure Regulator Setting
PrePurge Includes(psi) (kPa)
• SV9541Q2561 Natural Standard Opening 2-stage 1/2 in. NPT x
1/2 in. NPT
0.42 kPa low;
0.80 kPa high
1.7 in. wc low;
3.2 in. wc high
15 seconds LP Conversion Kit
* TRADELINE models • SUPER TRADELINE models