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DROP
PIPED
HORIZONTAL
GAS
SUPPLY
3 IN.
(76 MM)
MINIMUM
DROP
HORIZONTAL
TUBING
GAS
1
SUPPLY
RISER
3 IN.
(76 MM)
MINIMUM
WARNING
EXPLOSION HAZARD.
FAILURE TO FOLLOW PRECAUTIONS CAN
RESULT IN A GAS-FILLED WORK AREA.
SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING END CAP.
TEST FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.
1
ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
Fig. 4. Install a sediment trap in the supply line.
WARNING
Explosion Hazard.
Can cause severe injury, death or property
damage.
Check for gas leaks with soap and water solution
any time work is done on a gas system.
4. Apply a moderate amount of good quality pipe com-
pound, leave two end threads bare. On LP installa-
tions, use a compound resistant to LP gas. Do not
use pipe dope on the outlet. See Fig. 4.
TWO
IGNITION
IMPERFECT
SYSTEM
THREADS
CONTROL
PIPE
THREAD PIPE THE AMOUNT
SHOWN IN TABLE 3 FOR INSERTION
INTO IGNITION SYSTEM CONTROL
Fig. 5. Use a moderate amount of pipe compound.
5. Remove the seals over the water heater control
inlet and outlet, if necessary.
STATUS
IGNITION
SYSTEM
CONTROL
STATUS
IGNITION
SYSTEM
CONTROL
M23101
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND ONLY TO PIPE
(LEAVE TWO END THREADS BARE).
M16269
VT8800/WT8800 WATER HEATER CONTROLS
6. Connect the pipe to the water heater control inlet
and outlet. Use a wrench on the square end of the
water heater control. Maximum torque on the inlet is
40 ft. lb.; maximum torque on the outlet is 25 ft.lb.
7. Position compression fitting in pilot outlet and
engage threads. See Fig. 5 for controls and
connections. Turn until finger tight, then tighten one
more turn with wrench. Do not overtighten.
DEVICE
KNOB
GAS LINE
CONNECTION
PIEZO IGNITOR
SWITCH
IGNITOR
LEAD
THERMOPILE
UPPER
SENSOR
LOWER
SENSOR
PILOT
GAS
Fig. 6. Water heater controls and connections.
CAUTION
Contamination Hazard.
Can cause equipment malfunction.
Do not use thread tape sealants to seal the gas
supply to the control.
a. Use a pipe dope compound to seal the
connection.
b. Use only ANSI-approved compounds.
Wiring
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the general instructions
provided below. When these instructions differ from the
appliance manufacturer, follow the appliance
manufacturer instructions. Make sure wiring insulation
does not get cut by sharp edges.
NOTE: All wiring must comply with applicable electrical
codes and ordinances.
Connect control circuit to the water heater control using
the wiring diagram in Fig. 7.
5
FRONT VIEW
STATUS
BOTTOM VIEW
PRESSURE
MAIN GAS
TAP
M23037
STATUS
INDICATOR
69-1731
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