resideo WT8840 Série Instructions D'installation

WT8840 & WT8860 Trade
Water Heater Controls
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.
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.
INSTALLATION INSTRUCTIONS
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 2.
Regulation Range:
Natural Gas:
Minimum: 30,000 Btuh.
Maximum: 85,000 Btuh.
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
34-00013EF-05