Install Instructions

Domestic Piping
SECTION V - Domestic Piping
HOT WATER CAN SCALD!
• Water temperatures over 125ºF [52ºC]
can cause severe burns instantly, or
death from scalds.
• Feel water before bathing or showering.
• Consumer Product Safety Commission
and some states recommend tempera-
tures settings of 130ºF [54ºC] or less.
Setting thermostat higher than 130ºF
[54ºC] will increase risk of scald injury
and cause severe personal injury or
death.
• Water heated to a temperature suitable
for clothes washing, dish washing and
other sanitizing needs will scald and
cause permanent injury.
• Children and elderly, infirm, or physi-
cally handicapped persons are more
likely to be injured by hot water. Never
leave them unattended in or near a bath-
tub. If anyone using hot water in the
building fits this description, or if state
laws or local codes require certain
water temperatures at hot water faucets,
take special precautions.
- Install the factory supplied thermo-
static mixing valve at the water
heater. Installation must comply with
valve manufacturer’s recommenda-
tion and instructions.
- Use the lowest practical temperature
setting.
- Check water temperature after any
adjustment. You must follow “Setting
the Thermostatic Mixing Valve” pro-
cedures.
General Notes
• Household water usage patterns will affect
water temperature at any faucet or shower.
Occasionally check temperature at each
point of use, then adjust thermostatic mix-
ing valve accordingly. Always recheck
temperature after adjusting.
• Lowering the thermostatic mixing valves as
indicated in these instructions will reduce water
temperature levels. Consult your installer or
service technician.
Operating Restrictions
• Minimum DHW flow rate is 0.5 gpm [2
lpm] to initiate a domestic call for heat.
• Maximum DHW outlet temperature is
149ºF [65ºC].
• Minimum domestic working pressure is 40
psig [3 bar].
When the CHALLENGER is installed
in a domestic well application, the cut in
pressure of the domestic well pump’s
control must be set to 40 psig [3 bar] to
ensure more consistant domestic flow
and temperature performance.
WARNING
NOTICE
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