Brochure

18 63-8702
Water Heater Gas Valves
WT88 Series Gas Water Heater Control
Specifications
Important
WT88xx controls provide direct replacement only.
Pressure Regulator: The outlet pressure regulator setting is shown on
the product label.
Inlet Pressure Range: See appliance rating plate for inlet pressure
range recommendation.
0.5 PSI (14.0 in. w.c.) maximum inlet pressure allowed for proper
operation.
Body Pattern: 90 degrees with 1/2 in. inlet and 1/2 in. inverted flare
outlet.
Mounting: Mounting in upright position only.
Control Input:
Voltage Minimum: 350 mV dc, open circuit.
Voltage Maximum: 850 mV dc, open circuit.
Regulation Range:
Natural Gas: Minimum: 30,000 Btuh.
Maximum: 85,000 Btuh.
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to replace multiple A.O. Smith, Bradford White, and Rheem controls.
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Application
The WT88xx Water Heater Control is designed for use in Standing Pilot
applications using an immersion well for water temperature sensing.
All models of WT88xx controls include an integrated NTC temperature
sensor.
The WT88xx controls are powered from a thermopile heated by the
standing pilot flame. CS88xx pilot assemblies are designed for use
with this control.
The immersion well for sensing water temperature has matched NTC
thermistor sensors. These sensors provide the fail-safe mechanism
through which the WT88xx controls can provide both accurate water
temperature control as well as water temperature limit (Temperature
Cut-Out [TCO]) function.
Ambient Temperature Range: 32 to 150 °F (0 to 66 °C)
Operating Range: 32 to 150 °F (0 to 66 °C)*
*Valve will operate at 0°F (-18°C) but valve characteristics can not
be guaranteed until ambient temperature reaches 32°F (0°C).
Storage Range: -40 to 150 °F (-40 to 66 °C)
Humidity: 95% non-condensing at 104 °F (40 °C)
Approvals: This device is certified by Canadian Standards
Association (CSA) to the following standards:
ANSI Z21.20
ANSI Z21.23
ANSI Z21.78
ANSI Z21.87
CAN/CSA-C22.2 No. 199-M89
CAN1-6.6-M78
CSA 4.6
CSA 6.20
Accessory Parts: Pilot Assembly CS88xx
Aftermarket SKUs
Resideo OEM
Part Number OEM Part Number
OEM Part Number
Replacements OEM
WT8840A1000
1" insulation tank, 4" WC setting
WV8840A1000
WV8840A1001
222-47463-01A
222-47463-01E
415-52907-01 Bradford White
WT8840A1500
2" insulation tank, 4" WC setting
WV8840A1050
WV8840A1051
222-47463-02A
222-47463-02E
415-52907-02 Bradford White
WT8860A1000
2” insulation tank, 5” WC setting - ULN
WV8860A1009
WV8860A1010
222-48863-01 415-52915-01 Bradford White
WT8840B1000
1" insulation tank, 5" WC setting
WV8840B1042
WV8840B1109
WV8840B1110
316910-000
316910-000
321166-000
100112336
9007884005
AOSmith
WT8840B1500
2" insulation tank, 5" WC setting
WV8840B1059
WV8840B1117
WV8840B1118
316910-001
316910-001
321166-001
100112337
9007885005
AOSmith
WT8860B1000
2” insulation tank, 5” WC setting - ULN
WV8860B1309
WV8860B1310
100073010
318618-000
100093970
9007631005
AOSmith
WT8840C1000
1.5” insulation tank, 4” WC setting
WV8840C1406 AP16910E SP20832E Rheem
WT8840C1500
2” insulation tank, 4” WC setting
WV8840C1605 AP16910B SP20832B Rheem