39
LIGHTING THE WATER HEATER
FOR YOUR SAFETY READ BEFORE LIGHTING
Warning:
This
gas water heater is designed to operate reliably and safely as
long as the lighting procedure is followed
exactly
.
Make sure the water heater is filled with water and the water supply is on,
otherwise serious damage to the vitreous enamel cylinder lining and
plastic components may occur.
The installer must purge the gas line up to the gas control (refer to
“Gas Inlet”
on page 26), check all gas connections for leaks, gas supply pressure, test
point pressure (refer rating label) and adjust burner aeration if necessary (refer
to
“Air Adjustment”
on page 41).
Note:
•
621 275 indoor model - remove the
transport clip from the flue damper
housing.
•
631 275 outdoor model - the front cover must be in place before the burner
will operate. If the front cover is off when power is switched on, the system
will enter re-ignition attempt lockout (refer to
“Diagnostic Features Of Hot
Surface Ignition Control”
on page 40).
•
A viewing window is provided to check burner operation on the water
heater.
LIGHTING PROCEDURE
The water heater incorporates an automatic ignition system.
1. Switch on the electrical supply at the isolating switch to the water heater.
2. When the controlling thermostat registers heating is required, the hot
surface igniter rod warms up for 20 seconds. The burner will automatically
ignite.
3. If burner ignition is unsuccessful, a second and third re-ignition attempt will
occur after a five (5) minute delay between each try. This delay is to allow
for any build up of unburnt gas to escape.
4. If the third re-ignition attempt is unsuccessful, the system will enter lockout.
To reset the water heater, switch the electrical supply off at the isolating
switch, wait ten seconds then switch on again. If the water heater fails to
light, phone your nearest Rheem Service Department or Accredited Service
Agent to arrange for an inspection. (Authorised Service Person only: refer to
“Diagnostic Features of Hot Surface Ignition Control”
on page 40).
transport clip
Summary of Contents for 621265
Page 22: ...INSTALLATION 22 TYPICAL INSTALLATION OUTDOOR LOCATION 631 275 model shown...
Page 23: ...INSTALLATION 23 TYPICAL INSTALLATION INDOOR LOCATION 621 275 model shown...
Page 34: ...MULTIPLE INSTALLATIONS 34 LEGEND TYPICAL INSTALLATION RHEEM HEAVY DUTY GAS WATER HEATERS...
Page 36: ...MULTIPLE INSTALLATIONS 36 MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly...