Nortek PPH3RF Series, Installation Instructions Manual

Page: 10 / 20

10
Star Bushing
Bolt
Nut
Ambient Sensor
Plastic Clip
Nut
Figure 9. Ambient Sensor Mounting
JUMPER
POSITION
STATUS
TYPE
DIAGNOSTIC
DESCRIPTION
SC Operating Status Anti Short Cycle Timer
C1 Operating Status Cooling, 1st Stage
C2 Operating Status Cooling, 2nd Stage
H1 Operating Status Heating, 1st Stage
H2 Operating Status Heating, 2nd Stage
dF Operating Status Defrost
– – Operating Status Power On, No Call for Operation
Table 3. Control Board Status Indicators
2-Speed Outdoor Fan Motor
(Select Models)
If the unit utilizes a 2-speed condenser fan motor, this
motor will operate on low speed when in low cooling/
heating, and on high speed when in high cooling/heating.
Ambient Sensor Mounting
For optimum performance of the heat pump system,
the ambient sensor ( Figure 9 ) must be mounted on the
outside of the unit.
1. Remove the mounting bracket and all hardware included
in the packet.
2. Remove star bushing from 7/8” hole in corner panel of
the unit.
3. Route the ambient sensor through the 7/8” hole in the
corner panel of the unit, and then through the 7/8” hole
in the mounting bracket.
4. Route the sensor through the star bushing. Use the star
bushing to secure the mounting bracket to the unit.
5. Secure the ambient sensor inside the plastic clip and
secure it to the mounting bracket with the screw and
nut provided.
6. Install one spacer next between the plastic clip and
mounting bracket.
7. Bend the mounting bracket into position. Install the
mounting bracket to the unit using the screw in the
corner panel.
Defrost Control Board Test Pins
• Placing a jumper between the test pins for less than 1
second will bypass the Anti-Short Cycle Timer.
• Placing a jumper between the test pins for more than 1
second will force the unit into a defrost cycle. As soon
as the jumper is removed, the defrost cycle will end as
determined by the typical criteria.
• To determine operating status or fault conditions, refer
to Table 3 for diagnostic description.
Clearing Defrost Board Fault Codes
• Fault codes can be removed from memory through the
use of the test pins. This is accomplished by shorting
the two test pins momentarily (more than 1 second)
while there is no Y1 IN input present.
• Without resetting using the test pins, the fault codes will
stay in the board’s memory continuously (even through
loss of power) for 7 days.
Electric Heat Package (optional)
This heat pump is shipped without an auxiliary electric
heat kit installed. If electric heat is desired, an accessory
heater kit must be field installed. Refer to Table 2 (page
8) for blower speeds.
• Select the correct size heat package for the installation.
See specifications sheet for available kits and application.
Install the heater kit according to the to the installation
instructions provided with the kit.
• Installation is most easily accomplished before making
duct or electrical connections.
Outdoor Thermostat Options
HUD Outdoor Thermostat Option
This thermostat prevents the operation of supplemental
electrical resistance heat at outdoor temperatures above
40° F, except for defrost operation.
1. Remove the white wire between terminal W2 (on the
terminal strip) and W2 IN terminal (on the defrost
board). See Figure 8 (page 9) for additional wiring
connections.
2. Move the white jumper wire from W2 terminal (between
E and W2 on the terminal strip) and connect to W2
terminal (on the defrost board).
2nd Stage Thermostat Option
Models without an outdoor thermostat have a white wire
from
W2
on the terminal strip to
W2
on the defrost board
for the use of supplemental electrical resistance heat for
a
W2
or
E
call. For 2nd stage outdoor thermostat wiring
connections, see Figure 8 .
A jumper wire is supplied from W2 to E on the terminal
strip on all models.