
14
UltraTemp
®
Heat Pump Installation and User’s Guide
Connecting the Heat Pump to the IntelliTouch
®
or EasyTouch
®
Load Center via the
RS-485 Connector
The heat pump can be controlled by an IntelliTouch
®
or EasyTouch
®
system via the RS-485
communication cable. In this confi guration, IntelliTouch
®
or EasyTouch
®
overrides present 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).
Connecting the Heat Pump Control Board to IntelliTouch
®
or EasyTouch
®
via RS-485
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:
CAUTION
—
Switch the main power off 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, see
Figure 13
.
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 confi guration as shown on
page 15
,
Figure 14
.
NOTE:
Multiple wires may be inserted into single screw terminal.
Personality Board
Low Voltage
Raceway
Plastic
Grommet
Access
Screw
Cover
Panel
Screw
(Cover Panel
not shown)
IntelliTouch
®
Load Center
Figure 13.