Rheem Xtreme GX90-550 - Manual (Page 4)

• Insulation – sag and moisture proof fiberglass
insulation surrounds the storage tank to
minimize heat loss.
• Anode rods – patented design utilizes multiple
magnesium rods to ensure long life and
corrosion resistance.
• Temperature and pressure relief valve –
AGA/ASME rated and factory installed.
• Hand-hole cleanout – for removal of lime/
sediment deposits.
• Manual reset high limit – all models are factory
equipped with a manual reset high limit to meet the
code requirements of many states.
• Gas control system – fully adjustable thermostat
from 100°F to 180°F, 24 volt combination gas valve
includes main gas pressure regulation,
On-Off manual valve, 120/24 volt transformer, and
high limit temperature cut-out.
• Round premix burners – precision burners are
formed from high chromium stainless steel.
Recommended Specifications (for trade reference only)
Water heater(s) shall be XTREME model ________________, manufactured by RHEEM-RUUD, having gas input
of __________ Btu/hr. and a recovery rate of _____________ GPH at a 100°F temperature rise when tested and
certified at ____________ thermal efficiency. Water heater(s) shall have a storage capacity of 90 gallons. Water
heater(s) shall have the U.L. seal of certification and supplied with a factory installed AGA/ASME rated temperature
and pressure relief valve. Tank(s) shall be furnished with a tube bundle having a double coating of high temperature
porcelain enamel and furnished with magnesium anode rods rigidly supported. Water heater(s) shall meet or
exceed the thermal efficiency and standby loss requirements of current ASHRAE standards. Tanks shall have a
working pressure rating of 150 psi, and shall be completely factory assembled, including a pressure regulator
properly adjusted for operation on ___________ gas with chromium stainless steel burners. Controls will be
arranged for safety shutoff in event of pilot failure. Water heater(s) shall have front and rear side inlet/outlet water
connections. Water heater(s) shall be covered by a three year limited warranty against tank leaks.
Add “A” for ASME construction
Water heater(s) shall be constructed in accordance with the requirements of the ASME Boiler and Pressure Vessel
Code, Section IV Part HLW.
Limited Warranty
This product features a three year limited warranty against tank leaks. Please refer to Commercial
Warranty Information brochure for complete warranty information.
Xtreme Gas continued.
Other Features:
Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com
Rheem Canada Ltd./Ltée,128 Barton Street West, Hamilton, Ontario L8N 3P3
P R I N T E D I N U . S . A 0 7 / 0 7 W P F O R M N O . R R 1 0 2 C - 1 5 R e v. 4
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.