Installation guide

LOW-VOLTAGE
POWER LEADS-
(SEE UNIT
WIRING LABEL)
HIGH VOLTAGE (
POWER LEADS Io_ - -
(SEE UNITWIRING <[
LABEL) Lc.
_[
GND
CONTROL BOX
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FIELD-SUPPLIED
FUSED DISCONNECT
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,THERMOSTAT
(TYPICAL)
SPLICE BOX
LEGEND
Field Control-Voltage Wiring
Field High-Voltage Wiring .......
A08472
Fig. 15 - High and Control Voltage Wiring Connections
SINGLE-PHASE
CONNECTIONS
TO DISCONNECT
PER NEC
3-PHASE
CONNECTIONS
LEGEND
NEC -
¢q
GROUND
LEAD
L1
L2
L3
GROUND LUG
:INSLPICE BOX)
4B:3
NOTE: Use copper wire only.
National Electrical Code
Field Wiring
Splice Connections
Fig. 16 - Line Power Connections
C99057
b. AC/HP SIZE-SELECT SYSTEM SIZE INSTALLED
The factory setting for air conditioner or heat pump size
is the size which matches the model of packaged unit
installed. Installer should verify air conditioner or heat
pump size to ensure that airflow delivered falls within
proper range for the size unit installed. This applies to
all operational modes with the exception of electric heat
modes (See Fig. 19, B as indicated).
SYSTEM TYPE-SELECT SYSTEM TYPE
INSTALLED
The type of system will be factory selected (see below
for details):
(1.) AC-Air conditioner
(2.) HP-COMFORT-Heat Pump Comfort provides
approximately 315 CFM per ton for higher normal
heating air delivery temperature and provides
approximately 350 CFM per ton cooling airflow
for good humidity removal.
24 V Circuit Breaker
24 Volt Com t
Fig. 17 - Control Wiring Plate
C99070
(3.) HP-EFF (Factory Selected for 50XZ)- Heat Pump
Efficiency provides same airflow for heating and
cooling modes to increase overall HP efficiency;
approximately 350 CFM per ton.
d. AC/HP CFM ADJUST-SELECT NOMINAL, LOW,
OR HIGH AIRFLOW
The AC/HP CFM Adjust select is factory set to the
High-Hi (NOM for 060) tap. The CFM Adjust
selections NOM/LO will regulate airflow supplied for
all operational modes, except non-heat pump heating
modes. HI provides 15 percent airflow over nominal
unit size selected and LO provides 10 percent airflow
below nominal unit size selected. CFM Adjust selection
options are provided to adjust airflow supplied to meet
individual installation needs for such things as noise,
comfort, and humidity removal (See Fig. 19, D as
indicated).
e. ON/OFF DELAY-SELECT DESIRED TIME DELAY
PROFILE
Four motor operation delay profiles are provided to
customize and enhance system operation (See Fig. 19, E
as indicated).
Selection options are:
(1.) The standard 90 sec off delay (Factory Setting) at
100 percent airflow in cooling or heat pump
heating mode.
(2.) A 30 sec cooling delay with no airflow, 90 sec off
delay at 100 percent airflow profile is used when it
is desirable to allow system coils time to
heat-up/cooldown in coniunction with the airflow
in cooling or heat pump heating mode.
(3.) A no delay option used for servicing unit or when
a thermostat is utilized to perform delay functions.
(4.) ENH, enhanced selection, provides a 30 sec
cooling on delay with no airflow, plus 150 sec at
70 percent airflow and no off delay for added
comfort. This will minimize cold blow in heat
pump operation and could enhance system
efficiency.
f. CONTINUOUS FAN--SELECT DESIRED FAN
SPEED WHEN THERMOSTAT IS SET ON
CONTINUOUS FAN
13