LMU541HV User Manual

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MULTI F / MULTI F MAX Outdoor Unit Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

MULTI

MAX

MULTI

INSTALLING MULTI F MAX SYSTEMS

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For Multi F MAX outdoor units, piping can be installed in one of four directions: front, side, back, and down (A). If the downward installation is

chosen, the knockout hole in the base pan must be accessed (B).

Whatever direction is chosen, plug the access holes with field-provided putty or insulation to fill all gaps (C).

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or death.

Insects or small animals entering the outdoor unit will cause a short circuit in the electrical box, which will lead to unit failure.

Multi F MAX Outdoor Unit System Piping Connections

Outdoor Unit Piping Connections LMU480HV, LMU540HV, LMU600HV

Liquid Line Connection (in., OD) x Qty. Ø3/8 x 1

Vapor Line Connection (in., OD) x Qty. Ø3/4 x 1

Avoid Pipe Damage

• When routing field-provided piping, avoid damaging the outdoor unit from exces-

sive vibration.

• Properly insulate the liquid and gas lines separately up to the point of connection at

the unit frame.

• See table below for Multi F MAX outdoor unit connection types.

Table 24: Multi F MAX Outdoor Unit Piping Connections.

Figure 48: Multi F MAX Piping Installation.

Correctly route the piping so it does not make contact with mounting bolts. Allow room

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Front

Side

Back

Knockout Hole Base Pan

Down

Gas Piping

(Bigger Diameter)

Liquid Piping

(Smaller Diameter)

Putty or Insulation (field-supplied)

Drain Hose

Wire

Connection Pipe

Torque

Wrench

When tightening the

piping connection,

firmly hold the flare nut.

Figure 49: Multi F MAX Outdoor Unit Refrigerant Pipe

Connections.

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User Manual - Page 50