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Honeywell WV8860C Installation Instructions Manual

Water heater controls
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WV8860C Water Heater Controls
APPLICATION
The WV8860 Water Heater Control is designed for use in
Standing Pilot applications using an immersion well for
water temperature sensing. All models of WV8860
include an integrated NTC temperature sensor.
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.
SPECIFICATIONS
IMPORTANT
WV8860 controls provide direct replacement
only.
Pressure Regulator: The outlet pressure regulator set-
ting is shown on the product label.
Inlet Pressure Range:
See appliance rating plate for inlet pressure range
recommendation.
1/2 PSI (14.0 in. w.c.) maximum inlet pressure
allowed for proper operation.
INSTALLATION INSTRUCTIONS
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.
Capacity: See Table 1.
Regulation Range:
Natural Gas:
Minimum: 30,000 Btuh.
Maximum: 85,000 Btuh.
Ambient Temperature Range: 32°F to 150°F
(0°C to 66°C)
Operating Range: 0°F to 150°F (-18°C to 66°C)*
Storage Range: -20°F to 120°F (-29°C to 49°C)
*Valve will operate at 0°F (-18°C) but valve
characteristics can not be guaranteed until ambient
temperature reaches 32°F (0°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 CS88
Chamber Sensor 50056062-201
34-00019-03

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  Summary of Contents for Honeywell WV8860C

  • Page 1 WV8860C Water Heater Controls INSTALLATION INSTRUCTIONS Body Pattern: 90 degrees with 1/2 in. inlet and 1/2 in. APPLICATION inverted flare outlet. The WV8860 Water Heater Control is designed for use in Mounting: Mounting in upright position only. Standing Pilot applications using an immersion well for water temperature sensing.
  • Page 2: Planning The Installation

    WV8860C WATER HEATER CONTROLS be provided by the appliance manufacturer. Verify proper PLANNING THE INSTALLATION air circulation is maintained when the appliance is installed. WARNING Flow Capacity & Pressure Drop Fire or Explosion Hazard. Fig. 1 shows the typical flow (kBTU/hr) vs pressure drop Can cause severe injury, death or property (in.
  • Page 3: Connect Gas Supply

    WV8860C WATER HEATER CONTROLS 1. Use a new, properly reamed pipe free from chips. If WARNING tubing is used, make sure the ends are square, deburred and clean. All tubing bends must be Fire or Explosion Hazard. smooth and without deformation.
  • Page 4 WV8860C WATER HEATER CONTROLS Wiring IGNITION Follow the wiring instructions furnished by the appliance IMPERFECT SYSTEM THREADS CONTROL manufacturer, if available, or use the general instructions provided below. When these instructions differ from the appliance manufacturer, follow the appliance PIPE manufacturer instructions.
  • Page 5: Maintenance

    WV8860C WATER HEATER CONTROLS Perform Gas Leak Test Procedure to Check the Gas Input and Burner Flow Rate WARNING 1. Check the full rate manifold pressure listed on the appliance nameplate. Water heater control full rate Fire or Explosion Hazard.
  • Page 6: Recommended Action

    WV8860C WATER HEATER CONTROLS flashes of the status indicator after a three second 3. After status indicator analysis and appliance repair pause. One single flash indicates that the control is is complete, turn device knob to OFF, wait until the in normal operation.
  • Page 7 WV8860C WATER HEATER CONTROLS Troubleshooting Without Status Indicator Assistance Follow diagram in Fig. 6. TROUBLESHOOTING GUIDE WITHOUT STATUS LIGHT TURN DEVICE KNOB FROM OFF TO CHECK: PILOT, PRESS DOWN KNOB AND HOLD, • INLET PRESSURE LIGHT PILOT BY DEPRESSING PIEZO •...
  • Page 8: Turning Off The Appliance

    WV8860C WATER HEATER CONTROLS IMPORTANT 4. Turn on the gas supply to the appliance. Follow the operating instructions provided by 5. Restart the appliance by performing lighting pro- the manufacturer of your water tank appliance. cedure. The information in this form describes a typical 6.