Honeywell Gas Valve
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SV9570 SmartValve Water Heater Controls
The SV9570 TRADELINE® SmartValve Water Heater Control System is a single unit which combines direct ignition sequencing, gas flow control, temperature sensing and setpoint adjustment features. These controls were designed specifically for gas fired, forced-draft hot water tank heating applications. The ignition source is a 120V hot surface igniter lighting the main burner flame. Two types of 120V igniters may be used. SV9570 Controls provide high temperature thermal cutout and all gas ignition safety functions, controlling gas flow, ignition source, water temperature and a 120 Vac combustion air blower. The control also monitors the appliance airflow proving switch and limit string to assure proper appliance operation.
The SmartValveTM Water Heater Control provides pre-purge, postpurge and timed trial for ignition with multiple ignition trials and auto reset from lockout. Diagnostic LED indicates system status.
IMPORTANT: SV9570 Controls provide direct replacement only.
Body Pattern: Straight through w/ 1/2" inlet and 1/2" inverted flare outlet
Mounting: Multipoise capability allows mounting in any position 0 to 90° from upright, including vertically
Voltage and Frequency: 115 Vac, 50/60 Hz
Ignitor Load: 5A maximum at 120 Vac
Induced Draft Motor Load: 2.5A full load, 10A locked rotor at 120 Vac
Current: 0.1A at 115 Vac
Pre-purge Time (Factory-Set): 5
Interpurge: 30 seconds
Trial for Ignition: 4 seconds
Auto Restart Delay: 60 minutes, minimum
Postpurge Time (Factory-Set): 5 seconds
Ignition Retries: 3 retries; 4 trials total before total lockout
Ignition Recycles: 3; 4 losses of flame before lockout
Flame Failure Response Time: 2 seconds max. at 2 μA.
Regulation Range (Btuh):
Min - 20,000
Max - 180,000
Min - 40,000
Max - 180,000
Hot Surface Ignitor Type
HSI Warmup (seconds) - 7 first try; 12 subsequent tries
Flame Recognition Period - 1 second
Model Number Suffix Letter Designation
* Capacity based on 1000 Btu/ft³, 0.64 sp ng at 1" wc pressure drop (37.3 MJ/m³, 0.64 sp ng at 0.25 kPa pressure drop)
* Valves are guaranteed at only 77% of the rating
Gas Capacity Conversion Factor
Replaces Part Number: SV9570A2526, SV9570A2062, SV9570A2088, SV9570A2187, SV9570A2179