Commissioning - Rheem 850 Series Owner's Manual And Installation Instructions

TO FILL AND TURN ON THE WATER HEATER
The gas pilot or burner must not be lit until the water heater is filled with
water.

Open all of the hot water taps in the house (don't forget the shower).

Open the cold water isolation valve fully to the water heater.
Air will be forced out of the taps.

Close each tap as water flows freely from it.

Check the pipe work for leaks.

Inspect for leaks at the temperature pressure relief valve connection to the
water heater.
If a leak is detected, close the cold water isolation valve fully and relieve
pressure from the water heater by either operating the easing lever on the
temperature pressure relief valve or opening a hot tap. Remove the valve and
all of its thread sealant from the threads of the valve. Reapply new thread
sealant and refit the valve. Refer to the procedure in
Relief Valve"
on page 37.

Operate the easing lever on the temperature pressure relief valve to check
the smooth operation of the valve plunger and that water discharges freely
from the drain line. It is very important the lever is raised and lowered gently.
The lever should move smoothly and without undue force.
If the lever cannot be moved or is jerky in its movement, then the valve has
been damaged and must be replaced.

Open the gas isolation valve fully.

Check the gas pipe work for leaks.

Light the water heater (refer to
Warning: Upon completion of the installation and commissioning of the water
heater, leave this guide with the householder or responsible officer.
DO NOT leave this guide inside of the cover of the water heater, as it may
interfere with the safe operation of the water heater or ignite when the water
heater is turned on.
Explain to the householder or a responsible officer the functions and operation
of the water heater.

COMMISSIONING

"Lighting the Water Heater"
40
"Temperature Pressure
on page 42).