Nortek PPH3RE Series, Installation Instructions Manual

Page: 9 / 24

9
grounding
WARnIng:
the unit cabinet must have an uninterrupted or
unbroken electrical ground to minimize personal
injury if an electrical fault should occur. Do not
use gas piping as an electrical ground!
This unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the National Electrical Code (ANSI/NFPA 70) or the CSA
C22.1 Electrical Code. Use the grounding lug provided in
the control box for grounding the unit.
thermostat connections
• The heat-cool thermostat is equipped with a system
HEAT-COOL switch, which provides a positive means
of preventing simultaneous operation of the heating and
cooling units. The thermostat is also equipped with an
ON-AUTO fan switch which allows the home owner to
operate the indoor blower when air circulation is desired.
• Connect the low voltage wires to the respective terminals
on the thermostat base. See Figure 12 (page 22) and
the thermostat instruction sheet for more detailed wiring
information.
• The thermostat should be mounted about 5 feet above the
floor on an inside wall. DO NOT install the thermostat on
an outside wall or any other location where its operation
may be adversely affected by radiant heat from fireplaces,
sunlight, or lighting fixtures, and convective heat from
warm air registers or electrical appliances. Refer to the
thermostat manufacturer’s instruction sheet for detailed
mounting information.
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 (page 10) 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
10) 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 (Factory option)
Select models are equipped with an outdoor thermostat
from the factory. This prevents the operation of
supplemental electrical resistance heat at outdoor
temperatures above 40° F, except for defrost operation.
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 models with an outdoor thermostat,
this wire may be field supplied and installed on units that
are not HUD compliant. For additional info refer to Title
24: Housing and Urban Development - Subpart H, Section
3280.714, Paragraph 1, Item ii.
A jumper wire is supplied from
W2
to
E
on the terminal
strip on all models.
blower Speed
For optimum system performance and comfort, it may be
necessary to change the factory speed setting. See Table
2 for factory settings.
WARnIng:
to avoid electric shock, personal injury, or death,
turn off the electric power at the disconnect or the
main service panel before making any electrical
connections.
cAutIon:
label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
cAutIon:
to avoid personal injury or property damage,
make certain that the motor leads cannot come
into contact with any metal components of the
unit.
1. Disconnect all electrical power to the unit and remove
the service panel.
2. Verify the required speed from the airflow data found
in Table 2 . Place appropriate wire on the appropriate
motor speed tap for the required airflow.
3. Check all factory wiring per the unit wiring diagram and
inspect the factory wiring connections make sure no
wires loosened during shipping or installation.