Instructions / Assembly

11
Properly maintained, this water heater will provide years of depend-
able, trouble free service. It is strongly suggested that a regular rou-
tine maintenance program be established and followed by the owner.
It is further recommended that a periodic inspection of the blower,
thermostat, burner, relief valve, internal flueway, draft hood / damper
assembly and venting system should be made by service technicians
qualified in gas appliance repair.
1. ROUTINE PREVENTIVE MAINTENANCE
A. BURNERS — Visually inspect the main burner flame and the
pilot flame at least every three months. Refer to Figures 7, 8, 9, or
10 for normal flame pattern. Fallen scale can usually be dislodged
from the tops of the burners with a thin rod, then vacuumed or
brushed from the bottom of the burner box. If a more thorough
cleaning is deemed necessary to restore a normal flame pattern,
the burner tray assembly should be removed and the burners
cleaned individually. (See page 12 for Xtreme models and page
14 for GNU models.)
For your safety, removal and cleaning of burner tray and individual
burners should be performed ONLY by a qualified service techni-
cian, as it involves disconnection of gas piping and leak testing.
Small adjustments can be made by varying the manifold pressure
from the designated settings mentioned above.
5. INTERMITTENT PILOT FLAME ADJUSTMENT — No
adjustment is required with normal inlet gas pressures. The pilot
flame adjustment valve is pre-set, and does not normally require
re-adjustment.
6. HIGH ALTITUDE — Ratings of gas appliances are based on
installation and operation at sea level of elevations of 2000 feet.
Factory prepared high altitude units are available for some models
and are specifically rated for installations at elevations up to 5000
feet. Refer to rating plate on front of water heater for model number
and altitude specifications.
7. EMERGENCY SHUTDOWN —
Should overheating occur or the gas supply fail to shut off, turn off
the manual gas control valve to the appliance.
DO NOT use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the appli-
ance and to replace any part of the control system and any gas
control which has been under water.
If the water heater has been subjected to fire or physical damage,
turn off gas at the manual gas control (shut-off) valve. Do not oper-
ate the water heater again until it has been checked out by a
Operation
Maintenance
WARNING
!
Figure 7. — Pilot Flame Pattern (Standard Burner)
Figure 9. — Pilot Flame Pattern (Power Assist Burner & Xtreme Units)
Figure 8. — Pilot & Main Burner Flame Pattern (Standard Burner)
Figure 10. — Pilot & Main Burner Flame Pattern (Power Assist Burner
& Xtreme Units)
CAUTION
!
WARNING
!