Installation Guide

Installation and Maintenance
6. Electrical Wiring
6.1. Electrical Installation
·
Before proceeding with electrical connections, ensure that power supply is as specified on the unit rating plate.
See unit wiring label for proper field high and low-voltage wiring. Make all electrical connections in accordance
with the NEC and any local codes or ordinances that may apply. Refer to the NEC(USA) or CSA (Canada) for
wire sizing. Use properly-sized copper wire only.
·Every installation must include an NEC(USA) or CSA (Canada) approved over-current protection device.
CAUTION
WARNING
Disconnect all power before servicing or installing this unit.
To avoid electrical shock, fully ensure that the air conditioner is properly grounded.
All routing of electrical wiring must be made through provided electrical knockouts. Do not cut, puncture, or
alter the cabinet for electrical wiring.
Knockouts are provided on the indoor unit top panel and sides of the cabinet to allow for entry of the supply
voltage conductors. If the knockouts on the cabinet sides are used for electrical conduit, an adapter ring must
be used in order to meet UL 1995 safety requirements. An MEC or CEC approved strain relief is to be used at
this entry point. Some codes/municipalities require the supply wire to be enclosed in conduit.
Consult your local codes for further details.
Wiring Diagram
9
L1 L2 PE
Power supplyPower supply
Thermostat
Indoor unit Outdoor unit
Power
terminal
panel
(L1)
(L2)
( )
W1
B
C
R
Y
G
G
R
C
C B Y W SI
W1
SI
If the matching
outdoor
(condensing) unit
does not have an S1
terminal, then ignore
the S1 to S1
connection.
Electrical data
NOTE:
(1)1) Do notconnectdashedlinewhenelectricheaterisnotused.
(2) Wiring mustbeperformedaccordingtowiringdiagramthatis postedonindoorunit.
(3) The SI wire between the indoor and outdoor units is not mandatory, especially when the outdoor unit is connected to
an indoor unit of a different brand. It is more energy-efficient when the outdoor unit is connected to a Pioneer indoor unit
via SI wire. However, it still can run without it.
(4) Since the thermostat is locally provided, the terminal block in the diagram may differ from the actual one. The letter Y is
the same as Y1.
(5) Use standard thermostat wire to make a direct connection between the S1 terminal of the outdoor unit to the indoor S1
connection of the indoor unit. This will add to this system set the ability to digitally communicate between the indoor and
outdoor sections to change the indoor unit's fan speed automatically based on operational heat/cool loads.
Model
(Capacity)
Power Supply
ELB
Power
Source
Cable Size
Transmitting
Cable Size
Thermostat
Signal Size
Fuse or
Circuit
Breaker (A)
Rated Current
(A)
Nominal Sensitive
Current (mA)
24K/36K 208/230V ~/60Hz 15 30 15
48K/60K 208/230V ~/60Hz 15 30 15
5×16AWG
3×16AWG
3×16AWG
5×18AWG/
6×18AWG
5×18AWG/
5×16AWG
6×18AWG