Multi F Outdoor Condenser Installation Manual

49
Refrigerant Piping System Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
Connection Socket
A
B
Installing Field Piping to the Outdoor Unit Piping Connections
1. Verify the outdoor unit service ports are closed.
2. Remove the caps on the outdoor unit piping connections.
3. Connect the gas piping first to ROOM A, then to ROOM B, then to ROOM C, in that
order. Number of connections will differ depending on outdoor unit.
4. Tighten each gas piping connection individually following the “Tightening the Flare Nuts”
procedure below.
5. Connect the liquid piping first to ROOM A, then to ROOM B, then to ROOM C, in that
order. Number of connections will differ depending on outdoor unit.
6. Tighten each liquid piping connection individually following the “Tightening the Flare
Nuts” procedure below.
Using the Connection Socket
Some indoor units require the use of a connection socket when piping the indoor units
to the outdoor unit. (See previous page for information.) The connection sockets are
included as a factory-supplied accessory with the indoor units. To install:
1. Align the center of the piping sections as seen in the diagrams at right and below.
2. Follow the “Tightening the Flare Nuts” procedure above.
Figure 46: Close Up of the Field Piping to the
Outdoor Unit Piping Connection.
Figure 47: Connection Socket Diagram, External View.
13.0 - 18.0
24.6 - 30.4
39.8 - 47.7
Tightening Torque for Flare Nuts.
Tightening the Flare Nuts
1. When connecting the flare nuts, coat the flare (outside only) with polyvinyl ether (PVE) refrigeration oil only.
2. Initially hand tighten the flare nuts using three (3) or four (4) turns.
3. To finish tightening the flare nuts, use both a torque wrench and a backup wrench.
4. After all the piping has been connected and the caps have been tightened, check for refrigerant gas leaks.
Do not use polyolyester (POE) or any other type of mineral oil as a thread lubricant. These lubricants are not compatible with the PVE oil
used in this system and create oil sludge leading to equipment damage and system malfunction.
Pipe Size (in. O.D.) Tightening Torque (ft-lbs.)
1/2
1/4
5/8
3/8
3/4
Outside Diameter (mm)
6.35
9.52
12.7
15.88
19.05
45.4 - 59.3
71.5 - 87.5
Do not add any contaminants inside the refrigerant piping.
INSTALLING MULTI F SYSTEMS
A
B
Flare
to
Indoor
Unit
Flare
to
Outdoor
Unit
Figure 48: Connection Socket Diagram.
Connection Socket
Figure 49: Performing Connections.