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MULTI V 5 Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specications may change without notication.
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INSTALLING FOR HEAT PUMP
OPERATION
Left Side
Fr ont Pipe Route
Right Side
Pipe Route
Pipe Route
Piping Connections / Pipe Routes
Pipe Routes
Choose from three pipe routes from out of the outdoor unit to the indoor unit refrigerant system:
• Front Pipe Route.
• Left Side Route (Pipes are routed through the bottom of the outdoor unit).
• Right Side Route (Pipes are routed through the bottom of the outdoor unit).
The pipe route chosen depends on the installation area, and is at the discretion of the installer.
After the pipe route is chosen, the appropriate outdoor unit access holes must be knocked out
(see next page for knock out information).
Piping Connections for Heat Pump Operation.
Pipe Route Options.
Service Ports for Heat Pump Operation
Pipe Not Used for
Heat Pump Systems
(Keep Closed
and Capped)
Liquid Pipe
Vapor Pipe
Piping Connections for Heat Pump Operation
Use the correct outdoor unit connections to join the outdoor unit to the branch piping
in the indoor unit refrigeration system. The outdoor unit and branch piping require
brazed connections; indoor units require flare connections to the refrigerant system.
Multi V 5 outdoor units designed for heat pump operation use only the liquid pipe
and vapor pipe connections as shown in the diagram at right. For heat pump opera-
tion, the middle pipe is NOT used and must be kept closed and capped.
It is important that the correct outdoor unit connections be used for the intended system
operation (heat pump versus heat recovery). If the wrong connections are used, it may
result in refrigerant leaks, which may lead to illness or death.
It is important that the correct outdoor unit connections be used for the intended system
operation (heat pump versus heat recovery). If the wrong connections are used, it may
result in refrigerant leaks, which may lead to system malfunction or even failure to work
at all.
Liquid Pipe
Pipe Not Used for Heat Pump
Systems (Keep Closed and
Capped)
Vapor Pipe
Remove Knock Out Holes for the Pipes
Liquid Pipe
Vapor Pipe
Vapor Pipe
Liquid Pipe
5-5/32
4-
31/32
Front Pipe Route. Left and Right Side Routes (Pipes are Routed Through the Bottom of
the Outdoor Unit).
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