Honeywell WT8840 Notice D'installation

WT8840
Trade Water Heater Controls
APPLICATION
The WT8840 Water Heater Control is designed for use
in Standing Pilot applications using an immersion well
for water temperature sensing. All models of WT8840
include an integrated NTC temperature sensor.
The WT8840 is powered from a thermopile heated by
the standing pilot flame. CS8840 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
WT8840 can provide both accurate water
temperature control as well as water temperature
limit (Temperature Cut-Out [TCO]) function.
SPECIFICATIONS
IMPORTANT
WT8840 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.
Trade Service Part
WT8840A1000
1" insulation tank, 4" WC setting
WT8840A1500
2" insulation tank, 4" WC setting
WT8840B1000
1" insulation tank, 5" WC setting
WT8840B1500
2" insulation tank, 5" WC setting
* Includes pilot and combustion chamber gasket.
Replaces OEM Part Number
WV8840A1000 222-47463-01A
WV8840A1001 222-47463-01E
WV8840A1050 222-47463-02A
WV8840A1051 222-47463-02E
WV8840B1042 316910-000
WV8840B1109 316910-000
WV8840B1110 321166-000
WV8840B1059 316910-001
WV8840B1117 316910-001
WV8840B1118 321166-001
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 1.
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: 0 to 150 °F (-18 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 CS8840
OEM Replacement
239-47463-01*
239-47463-02*
100112336 &
9007884005
100112337 &
9007885005
OEM
Bradford White
Bradford White
Bradford White
Bradford White
AOSmith
AOSmith
AOSmith
AOSmith
AOSmith
AOSmith
34-00013EF-03