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Install (2)
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| Installation Instructions for the WV8860 and WV8840 Gas Control (English) | 05/2020 | 1018681 kb |
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| Installation Instructions for WV8860A Water Heater Controls (English) | 05/2020 | 799226 kb |
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| Application | Water Heater Control |
|---|---|
| Product Features | ULN water heaters are primarily sold in CA and UT |
| Approvals and Standards | CSA Certified: 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 |
| Capacity (Min) | 30 Btuh |
| Capacity (Max) | 85 Btuh |
| Ignition Type | Standing Pilot with Peizo |
| Type of Fuel | Natural Gas |
| Sensor Type | NTC thermistor |
| Body Pattern | 90 degree |
| Inlet Pressure (Max) | 0.5 psi | 14.0 in w.c. |
| Control Input Voltage (Min) | 850 mV dc, open circuit |
| Control Input Voltage (Max) | 350 mV dc, open circuit |
| Mounting Type | Mount in the upright position |
| Inlet Connection Size | 1/2 in |
| Inlet Connection Type | NPT |
| Outlet Connection Size | 1/2 in |
| Outlet Connection Type | Inverted Flare |
| Set point Temperature (Min) | 55 °F | 13 °C |
| Set point Temperature (Max) | 155 °F | 68 °C |
| TCO Cutout Temperature | 189 °F | 87 °C |
| Shipping and Storage Temperature (Min) | -20 °F | -29 °C |
| Ambient Operating Temperature (Max) | 150 °F | 66 °C |
| Ambient Operating Temperature (Min) | 32 °F | 0 °C |
| Shipping and Storage Temperature (Max) | 120 °F | 49 °C |
| Operating Relative Humidity (Max) | 95% Non-condensing at 104 °F | 95% Non-condensing at 40 °C |
| Warranty | 1 Year |
The WV8860 design includes an input for reading an NTC temperature sensor. The control uses this sensor to read and capture the temperature profile of surfaces with maximum temperatures up to 300°F (150°C). Applications of this feature include characterizing the water heater combustion chamber temperature during burner operation to indicate if the burner is operating properly.
The WV8860 is powered from a thermopile heated by the standing pilot flame. CS88 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 WV8860 can provide both accurate water temperature control as well as water temperature limit (Temperature Cut-Out [TCO]) function.
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