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ULTRATEMP
®
Heat Pump Installation and User’s Guide
14
ULTRATEMP
®
Heat Pump Installation and User’s Guide
Connecting the Heat Pump to the IntelliTouch
®
or EasyTouch
®
Control System Load
Center via the RS-485 Connector
Switch the main power off to the IntelliTouch
®
or EasyTouch
®
load center before servicing.
The UltraTemp
®
Heat Pump can be controlled by an
IntelliTouch or EasyTouch system via the RS-485
communication cable. In this configuration, IntelliTouch
or EasyTouch overrides preset Temperature Set points
on the heat pump and will start or stop the heat pump.
The transfer of this data takes several seconds and
causes a delay from when the command is given from
the IntelliTouch or EasyTouch indoor control panel
until the heat pump physically responds. This happens
automatically but may take 1-2 minutes to complete.
Note:
Heat pump control board set points will
be shown but functionality disabled. For more
information, refer to the IntelliTouch User’s Guide
(P/N 520102) or the EasyTouch User’s Guide (P/N
520584) or the EasyTouch Wireless System User’s
Guide (P/N 520688).
Connection from heat pump board to the IntelliTouch
or EasyTouch system is via the optional four-wire cable
(P/N 520199).
To connect the heat pump board cable to the
IntelliTouch or EasyTouch load center:
1. Unlatch the IntelliTouch or EasyTouch load center
front door spring latches, and open the front door.
2. Remove the cover-panel screws securing the high
voltage cover-panel, and remove it from the enclosure.
3. Loosen the two control panel access screws and fold
down the outdoor control panel.
4. Insert the four-wire cable into plastic grommet on
the bottom of the enclosure and route the wire up
through the low voltage raceway to the Personality
board.
5. Strip back the cable conductors ¼ in. Insert the wires
into either of the COM PORTS (J7 and J8) screw
terminals located on the left side of the Personality
board. Secure the wires with the screws. For wiring
details, refer to the pin configuration as shown.
Note:
Multiple wires may be inserted into single
screw terminal.
6. Close the IntelliTouch control panel and secure it
with the two access screws.
7. Install the high voltage panel cover and secure it with
the two retaining screws.
8. Close the load center front door and secure with the
two latches.
9. Switch power on to the IntelliTouch load center.
IntelliTouch Personality
Board COM PORT
(J7/J8)
Personality Board
Low Voltage
Raceway
Plastic
Grommet
Access
Screw
Cover
Panel
Screw
(Cover Panel
not shown)
IntelliTouch Load Center