About Your Water Heater - Rheem HPHD-135HNU-483 Owner's Manual And Installation Instructions

Commercial Air to Water Heat Pump Water Heater

ABOUT YOUR WATER HEATER

WATER HEATER APPLICATION
This water heater is designed for the purpose of heating
potable water. Its use in an application other than this may
shorten its life.
HOW HOT SHOULD THE WATER BE?
The heat pump (compressor, evaporator and condenser)
will operate until a water temperature of up to setpoint is
reached.
The factory setting is 142°F (61°C). The setpoint can be
adjusted up to 149°F (65°C) depending on site suitability
after consulting with the manufacturer.
HOTTER WATER INCREASES THE RISK OF
SCALD INJURY
This water heater can deliver water at temperatures which
can cause scalding. Check the water temperature before
use, such as when entering a shower or filling a bath or
basin, to ensure it is suitable for the application and will
not cause scald injury.
We recommend and it may also be required by applicable
state or local regulations that an approved temperature
limiting device be fitted into the hot water pipe work to the
bathroom and ensuite when this water heater is installed.
This will keep the water temperature below 122°F (50°C)
at the bathroom and ensuite. The risk of scald injury will
be reduced and still allow hotter water to the kitchen and
laundry.
TEMPERATURE ADJUSTMENT
Setpoint Quick Setting
Press 'prg' from the main display screen and the Setpoint
page will appear. Cursor will be on the set temperature.
Pressing the up and down keys will adjust the setting in
0.1 increments. Hold down for rapid change. Press 'Enter'
to confirm change. Press 'esc' to return to the main dis-
play screen.
4
167°F 75°C
158°F 70°C
149°F 65°C
140°F 60°C
131°F 55°C
122°F 50°C
113°F 45°C
104°F 40°C
95°F 35°C
NOTE: Mixing valves are required if adjusted above
120°F (49°C) for reducing point of use water tempera-
ture by mixing hot and cold water in branch water lines. It
is recommended that a mixing valve complying with the
Standard for Temperature Actuated Mixing Valves for Hot
Water Distribution Systems, ASSE 1017 be installed. See
pages 15 & 17 for more details and contact a licensed
plumber or the local plumbing authority for further infor-
mation.
Minimum recommended
stored water temperature
Maximum recommended
supply temperature to bath-
room and ensuites