ICP PGN324 Installation instructions manual - Warning
11
Conditioning
Contractors
National
Association
(SMACNA) and Air Conditioning Contractors of
America (ACCA) minimum installation standards for
heating and air conditioning systems. Secure all ducts
to building structure.
7. Flash, weatherproof, and vibration isolate all openings
in building structure in accordance with local codes and
good building practices.
Step 10—Install Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
The unit cabinet must have an uninterrupted, unbroken
electrical ground. This ground may consist of an
electrical wire connected to the unit ground screw in the
control compartment, or conduit approved for electrical
ground when installed in accordance with NEC,
ANSI/NFPA
American
National
Standards
Institute/National Fire Protection Association (latest
edition) (in Canada, Canadian Electrical Code CSA
C22.1) and local electrical codes.
!
WARNING
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the
unit being installed.
1. Make all electrical connections in accordance with
NEC ANSI/NFPA (latest edition) and local electrical
codes governing such wiring. In Canada, all
electrical connections must be in accordance with
CSA standard C22.1 Canadian Electrical Code Part
1 and applicable local codes. Refer to unit wiring
diagram.
2. Use only copper conductor for connections between
field--supplied electrical disconnect switch and unit.
DO NOT USE ALUMINUM WIRE.
3. Be sure that high--voltage power to unit is within
operating voltage range indicated on unit rating
plate. On 3--phase units, ensure phases are
balanced within 2 percent. Consult local power
company for correction of improper voltage and/or
phase imbalance.
4. Insulate low--voltage wires for highest voltage
contained within conduit when low--voltage control
wires are in same conduit as high--voltage wires.
5. Do not damage internal components when drilling
through any panel to mount electrical hardware,
conduit, etc.
!
CAUTION
HIGH--VOLTAGE CONNECTIONS
When routing power leads into unit, use only copper wire
between disconnect and unit. The high voltage leads
should be in a conduit until they enter the duct panel;
conduit termination at the duct panel must be watertight.
The unit must have a separate electrical service with a
field--supplied, waterproof disconnect switch mounted at, or
within sight from, the unit. Refer to the unit rating plate, NEC
and local codes for maximum fuse/circuit breaker size and
minimum circuit amps (ampacity) for wire sizing.
The field--supplied disconnect switch box may be mounted
on the unit over the high--voltage inlet hole when the
standard power and low--voltage entry points are used (See
Fig. 3 and 4 for acceptable location).
See unit wiring label and Fig. 14 for reference when making
high voltage connections. Proceed as follows to complete
the high--voltage connections to the unit.
1. Run the high--voltage (L1, L2) and ground lead into the
control box.
2. Connect ground lead to chassis ground connection.
3. Locate the black and yellow wires connected to the line
side of the contactor.
4. Connect field L1 to black wire on connection 11 of the
compressor contactor.
5. Connect field wire L2 to yellow wire on connection 23 of
the compressor contactor.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before making any wiring changes, make sure the gas
supply is switched off first. Then switch off the power
supply to the unit and install lockout tag.
!
WARNING
CONTROL VOLTAGE CONNECTIONS
Do not use any type of power--stealing thermostat. Unit
control problems may result.
Use no. 18 American Wire Gage (AWG) color--coded,
insulated (35_C minimum) wires to make the control
voltage connections between the thermostat and the unit.
If the thermostat is located more than 100 ft from the unit (as
measured along the control voltage wires), use no. 16 AWG
color--coded, insulated (35_C minimum) wires.
Standard Connection
Remove knockout hole located in the flue panel adjacent to
the control access panel (See Fig. 3 and 4). Remove the
rubber grommet from the installer’s packet (included with
unit) and install grommet in the knockout opening. Provide
a drip loop before running wire through panel.
FIGURE 10
High and Control Voltage Connections
POWER
SUPPLY
FIELD-SUPPLIED
FUSED DISCONNECT
HIGH VOLTAGE
POWER LEADS
(SEE UNIT WIRING
LABEL)
GR
CONTROL BOX
SPLICE BOX
LOW-VOLTAGE
POWER LEADS
(SEE UNIT
WIRING LABEL)
W
Y
G
R
C
WHT(W1)
YEL(Y)
GRN(G)
RED(R)
BRN(C)
THERMOSTAT
(TYPICAL)