Specification

Page 35

mrcool.com

Electrical Connections

CAUTION

Electrical work must be completed by a qualiﬁed electrical technician.

Connect the connective cables to the terminals, as identiﬁed below, with their matching

numbers on the terminal block of the indoor and outdoor units. For example, in the US models

shown in the following diagram, Terminal L1(A) of the outdoor unit must connect with terminal

1 on the indoor unit. Continue to match zone to zone for any additional connections.

See wiring diagram below and take note of the following precautions.

• Check the speciﬁcations for the power source before proceeding.

• Conﬁrm that the electrical capacity is suﬃcient.

• Conﬁrm that the cable thickness is as speciﬁed in the power source speciﬁcations.

• Always install an earth leakage circuit breaker in wet or moist areas.

• The following can be caused by a drop in voltage; vibration of a magnetic switch, damaging

the contact point, broken fuses, and disturbance of normal functioning.

• Disconnection from a power supply must be incorporated into the ﬁxed wiring. It must have

an air gap contact separation of at least 3mm in each active (phase) conductors.

• Before accessing terminals, all supply circuits must be disconnected.

• If using magnetic rings (optional - not supplied), you must use the correct magnetic rings on

your equipment to satisfy the EMC compulsory regulations required by the international

standard CISPR 14-1:2005/A2:2011.

NOTE

This product is designed to run on 60Hz frequency which is the North American standard.

Run the main power cord through the lower line-outlet of the cord clamp. Use a magnetic ring (not

supplied, optional part) to hitch the connective cable of indoor and outdoor units after installation.

One optional magnetic ring is used for one cable.

---- This symbol indicates ﬁeld wiring.

Up to Three Zones

OPTIONAL

Up to Four Zones

LPPUS REWOP Y

L1(A)

L2(A)

S(A)

L1(B)

L2(B)

S(B)

1(C) 2(C) 3(C) 1(D) 2(D) 3(D)

TO A

TO B

TO D

TO C

OPTIONAL

This symbol indicates optional magnetic ring.