INSTALLATION
16 • Residenal Hybrid Electric Heat Pump Water Heater Use and Care Guide
The water heater is now ready for
normal operation. To keep your water
heater working safely and efficiently
and extend its life, perform mainte-
nance as described in maintenance
section beginning on page 26.
NOTE: The default operang mode is
Hybrid, to select a dierent mode see
“Operang Mode Descripons” secon
on page 17.
PRIOR TO BEGINNING OPERATION:
Air lter is factory installed with tabs
oriented down for shipping. Please see
maintenance secon for instrucons on
removal, cleaning and replacing.
1
Turn on electrical power to the
water heater.
The water heater will conduct
a system diagnosc (approximately 8
minutes) each me power is applied
from an o state. Normal operaon will
begin aer the system diagnosc has
been completed..
2
Once the diagnosc sequence
has nished, the fan should
turn on. This typically takes 8
minutes, (the User Interface Module
will display “-”, “--”, “---” repevely
during this period).
The heat pump’s fan will not
turn on if the incoming water tempera-
ture is less than 59°F/15°C and/or the
ambient air temperature is above
120°F/15°C, or below 45°F/7.2°C.
Should the internal diagnoscs detect a
problem with the heat pump, an error
code will be displayed.
3
Set the desired operaonal
mode. For typical installaons,
the factory default mode,
Hybrid Mode oers the best combina-
on of eciency and hot water delivery.
For detailed descripons of all opera-
onal modes see “Operang Mode
Descripons” page 17.
Temperature
With the installaon steps completed,
you may adjust the water heater’s tem-
perature seng if desired.
1
The water heater’s tempera-
ture seng has been factory
set to approximately
140°F/60°C. Higher tank temperatures
(140° F/60° C) kill bacteria that cause a
condion known as “smelly water” and
can reduce the levels of bacteria that
cause water-borne diseases.
A mixing Valve must be installed where
required.
Figure 23 - Adjust Thermostat Mixing
Valves to120°F or lower.
-
• The water temperature setting
can be adjusted by using the Up
and Down buttons on
the UIM (User Interface Module).
Using the up or down buttons, cycle
through the available temperature
set points until the desired tempera-
ture is displayed. The temperature
setting will blink on the display;
press the Mode/Enter button to
confirm the selection (see figure 26
on page 19).
• The available temperature set points
can be cycled through quickly by
pressing and holding the Up button.
2
Please allow adequate me for
the heater to provide hot
water.
-
3
Check water temperature at
several points of use in your
home (for example, bathtub
faucet, shower, or lavatory sink) and
adjust the temperature as needed. If
you aren’t sure how to adjust the
Thermostac Mixing Valve sengs, or
aren’t sure if you have Thermostac
Mixing Valves, contact a qualied
person.
INSTALLATION
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