Wall Mounted Installation Manual

33
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MAX
MULTI
F
MULTI
F
Connection sockets (included as a factory-supplied accessory with the
indoor units) will need to be used when piping the indoor units to the
branch distribution unit. The connection sockets for 36k indoor units are
factory supplied with the branch distribution units. See tables above and below for indoor unit piping connection and connection socket dimensions.
See below and the follow page for the connection socket installation procedure.
Indoor Unit Capacity
Vapor Line
Piping Size (in., OD)
Liquid Line
Piping Size (in., OD)
7,000 Btu/h
Ø3/8
Ø1/4
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
18,000 Btu/h
Ø1/2
24,000 Btu/h
Table 14: Indoor Unit Pipe Sizes.
Indoor Unit Capacity
Vapor Line
Conn. (in., OD)
Liquid Line
Conn. (in., OD)
7,000 Btu/h
Ø3/8 Ø1/4
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
18,000 Btu/h Wall-Mounted and
Vertical Air Handling Units
Ø5/8 Ø3/8
18,000 Btu/h Low Static Duct
and Four-Way Cassette Units
Ø1/2 Ø1/4
24,000 Btu/h Ø1/2 Ø1/4
Table 15: Indoor Unit Piping Connections.
Table 16: Connection Socket Dimensions.
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INSTALLATION
Indoor Unit Capacity
Vapor (in., OD) Liquid (in., OD)
A B A B
18,000 Btu/h Wall-Mounted and Vertical Air Handling Units Ø3/8 ĺ Ø1/2, Ø1/2 ĺ Ø5/8 Ø1/4 ĺ Ø3/8
18,000 Btu/h Low Static Duct and Four-Way Cassette Units Ø3/8 ĺ Ø1/2 N/A
24,000 Btu/h Ø3/8 ĺ Ø1/2 N/A
Installing Field Piping to the Branch Distribution Unit Piping Connections
1. Remove any caps, etc., that will be on the branch distribution unit.
2. Tighten each piping connection individually following the “Tightening the Flare Nuts” procedure later in this section.
3. When all piping installation has been completed, perform the triple leak / pressure and evacuation tests (see the Final Installation Proce-
dures Section in the Multi F / Multi F MAX Outdoor Unit Installation Manual), verify that the system does not have any leaks, and then fully
insulate all joints / connections.
Figure 44: Close Up of Branch Distribution to Indoor Unit Piping Connections.
(Only for 36 kBtu/h Indoor Units
to Connect to “D ROOM”)
A ROOM
B ROOM
C ROOM
D ROOM
(Branch Distribution Unit: PMBD3641)
(Only for 18, 24 kBtu/h Indoor Units)
(Branch Distribution Unit: PMBD3640)
A ROOM
B ROOM
C ROOM
D ROOM
Using the Connection Socket
Some indoor units require the use of a connection socket when piping the indoor units to the branch distribution unit. (See previous page and
below for information.) The connection sockets are included as a factory-supplied accessory with the indoor units, or in the case of the 36k
indoor unit, it is factory supplied with the branch distribution units. To install:
1. Remove any caps, etc., that will be on the branch distribution unit.
2. Align the center of the piping sections as seen in the diagram at right.
3. Tighten each piping connection individually following the “Tightening the Flare
Nuts” procedure earlier in this section.
4. When all piping installation has been completed, perform the triple leak / pressure and
evacuation tests (see the Final Installation Procedures Section in the Multi F / Multi F
MAX Outdoor Unit Installation Manual), verify that the system does not have any leaks, and then fully insulate all joints / connections.
Figure 45: Connection Socket Diagram, External View.
Connection Socket
To Branch
Distribution
Connection
To Flared
End of
Field Piping