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INSTALLATION
Post Installation Review
Understand how to use the
1
User Interface Module to set
the various modes and
functions.
Hybrid Mode is the recom-
2
mended Operating Mode.
Understand the various
Operating Modes and which mode may
be best, based on ambient temperature
and hot water demands.
Understand the importance of
3
routine inspection/ mainte-
nance of the condensate drain
pan and lines. This is to prevent any
possible drain line blockage resulting in
the condensate drain pan overflowing.
NOTE: If water is coming from the
overflow slot of the condensate drain
access cover, this indicated that both
condensate drain lines may be blocked
and immediate action is required.
Drain Access Cover
Secondary Drain
Primary Drain
Overflow Slot
Figure 24 - Condensate Drain Access
Cover
To maintain optimal operation,
4
check, remove and clean the
air filter as needed.
The Installation Instructions
5
and Use and Care Guide should
be kept with the water heater
for reference.
Water Temperature Ad-
justment
The water temperature can be
adjusted from 95°F / 35°C to 150°F /
65.5°C. Use the Up and Down Buttons
on the front panel to
set the desired temperature (figure 26,
page 19). The setting temperature will
blink on the display, press Mode/Enter
button to confirm.
The water temperature can be
adjusted quickly by pressing the
"Temperature Up" button and holding
for three seconds.
NOTE:
Before attempting to adjust
the thermostat, read the "Water
Temperature Regulation" section. If
the instructions are not clear, contact a
qualified person.
NOTE:
For increased water demand,
switching (temporarily) to Hybrid
Mode or Electric Mode will decrease
the recovery/re-heat time. Be sure to
switch back to the desired operational
mode when finished.
Operating Mode De-
scriptions
The operating modes can be changed
sequentially by pressing the Mode/
Enter button (Figure 26, page 19). The
Operation Mode Indication Light will
turn on when the relevant mode is
selected.
This unit is equipped with technology
that senses the hot water demand
from the unit. While in Efficiency or
Hybrid mode, during normal usage,
the unit will operate the heat pump
for maximum efficiency. In the Hybrid
mode during periods when the water
usage is above normal, this unit
has the ability to use one element
Residential Hybrid Electric Heat Pump Water Heater Use and Care Guide • 17
(upper or lower) and the heat pump
simultaneously to help improve
recovery. This transition is seamless
and will go unnoticed.
Efficiency Mode -
Provides the highest efficiency and
lowest cost operation by using only
the heat pump for heating. Recovery
time and efficiency will vary with
ambient temperature and relative
humidity. Efficiency will be greatest,
and recovery quickest, when both
are high. At lower temperatures and
relative humidity levels, efficiency
will be lower and recovery will take
longer. Heat pump operation is allowed
between 45°F / 7°C to 120°F / 48°C
ambient temperature. At ambient
temperatures lower than 45°F / 7°C
and greater than 120°F / 48°C, the
heat pump will not operate. Similarly,
if the water temperature in the tank is
less than 59°F / 15°C, the heat pump
will not operate. The unit will operate
in electric mode until ambient air and
water temperatures return to the safe
operating range of the heat pump.
Hybrid Mode -
This is the default, recommended
setting, combining high energy
efficiency with reduced recovery time.
This mode uses the heat pump as the
primary heating source. One of the
heating elements (upper or lower)
will provide supplementary heating if
demand exceeds a predetermined level
so that the set point temperature can
be recovered more quickly.
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Troubleshooting
