NOTICE
All wiring should be in accordance with both the National
Electric Code (NEC) and the local building codes.
UNITS RATED 208/230V
— the RetroAire unit is wired for
230v primary voltage from the factory. The transformer must
be rewired by the installer if the jobsite voltage is 208v. Change
the transformer tap from orange to red. See the wiring diagram
for details.
Setting the control board jumpers
The control board has two sets of factory installed jumper pins on the
control board,
HP
jumper and
TEST
jumper. These pins have
HP jumper — to select heat pump or straight cooling
These pins determine whether the unit operates as straight cooling or
as heat pump (see Figure 34 and Figure 36).
Jumper the right pin to the center pin for heat pump operation.
•
Jumper the left pin to the center pin for straight cooling operation.
•
HP Jumper
Figure 34
(selects heat pump or straight cooling)
TEST jumper— to select normal or test mode
This jumper is for use in testing only (see Figure 35 and
Figure 36).
When the
JUMPER
pins are jumpered together, all timers are elimi-
nated
(example — anti-short cycle, purge, etc.)
. This is mainly used for
production line testing. But it may be used for field testing as well.
The units are factory set with the jumper on only one pin
(normal
operation position)
.
WARNING
Do not leave the unit operating with the TEST jumper in the
TEST position.
TEST jumper
Figure 35
(selects normal or test mode)
Circuit board
Figure 36
TEST JUMPER
HEAT PUMP
JUMPER
Final Inspection & Start-up
(continued)
HP
HP
HP
Heat Pump
Mode
(jumper center
& Btm. pins)
Straight
Cool Mode
Mode
(jumper center
& top pins)
TEST
Normal operation
(pins not jumpered)
Test mode
(pins jumpered)
Replacement Packaged Terminal Air-Conditioning / Heat Pump
• Installation, Operation, and Maintenance Manual •
P/N 240008034, Rev. D [7/29/2011]
27
Made in USA
