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Installation consideration
Models
The NUI can be programmed with the following options.
Heating Only
Cooling Only
Reversible Heat Pump
Power
The NUI will be powered with 12V unregulated DC Voltage.
Installation
Step 1 — User Interface Location
Approximately 5 ft (1.5m) from floor.
Close to or in a frequently used room, preferably on an
inside partitioning wall.
On a section of wall without pipes or duct work.
User Interface should NOT be mounted.
Close to a window, on an outside wall, or next to a door
leading to the outside.
Step 2 — Install User Interface
Warning
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing User Interface, turn off all power to
equipment.
There may be more than one power to disconnect.
This selection can be done during installation.
This power is supplied to the User Interface by the Air to
Water Heat Pump.
Exposed to direct light or heat from the sun, a lamp,
fireplace, or other temperature--radiating objects
which could cause a false reading.
Close to or in direct airflow from supply registers and
return--air registers.
In areas with poor air circulation, such as behind a door
or in an alcove.
1.
Turn OFF all power to unit.
2.
If an existing User Interface is being replaced:
Remove existing User Interface from wall.
Disconnect wires from existing User Interface,
one at a time.
As each wire is disconnected, record wire
color and terminal marking.
3.
Open the NUI (mounting base) to expose mounting
holes. The base can be removed to simplify mounting.
Press the thumb release at the top of the NUI and
snap apart carefully to separate mounting base from
remainder of the NUI.
4.
Route the NUI wires through large hole in mounting
base. Level mounting base against wall and mark wall
through 2 mounting holes. See Fig. 1.
3
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