Multi F Outdoor Condenser Installation Manual

51
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
INSTALLING MULTI F MAX SYSTEMS
Branch
Distribution
Unit
Refrigerant Connections
Pipe Size (in.)
Connectible Indoor Unit Capacity
(Btu/h)
Liquid Vapor
PMBD3620 Ø1/4 x 2 Ø3/8 x 2 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3630 Ø1/4 x 3 Ø3/8 x 3 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3640 Ø1/4 x 4 Ø3/8 x 4 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3641 Ø1/4 x 4
Ø3/8 x 3
7,000, 9,000, 12,000, 15,000, 18,000, 24,000
(A, B, C)
Ø1/2 x 1 24,000, 36,000 (D)
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 the follow page for the connection socket installation
procedure.
Multi F MAX Outdoor Unit System Piping Connections
Branch Distribution to Indoor Unit Piping Connections
• Install indoor unit liquid and vapor refrigerant pipes (and connec-
tion wiring) to the appropriate branch distribution ports.
• Clearly note on the indoor unit’s refrigerant piping (liquid, vapor)
which branch distribution port it is connected to (A, B, C, D).
Outdoor Unit Piping Connections
LMU480HV, LMU540HV,
LMU600HV
Liquid Line Connection
(in., OD) x Qty.
3/8 x 1
Vapor Line Connection
(in., OD) x Qty.
3/4 x 1
Avoid Pipe Damage
• When routing field-provided piping, avoid damaging the outdoor unit from excessive 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 25: Outdoor Unit Piping Connections.
Table 26: Branch Distribution Unit Piping Connections.
Table 27: Indoor Unit Pipe Sizes.
Table 28: Indoor Unit Piping Connections.
Indoor Unit Capacity
Vapor (in., OD) Liquid (in., OD)
A B A B
18,000 Btu/h: Wall-
Mounted
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Ø5/8
ĺ
15,000 Btu/h: Console;
18,000 Btu/h: Low Static
Duct, Four-Way Cassette
ĺ N/A
24,000 Btu/h ĺ N/A
36,000 Btu/h ĺ ĺ
Figure 50: Branch Distribution Ports to Indoor
Units -- Side View.
ABC D
Indoor Unit
C a p a c i t y
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
15,000 Btu/h: Console;
18,000 Btu/h
Ø1/2
24,000 Btu/h
36,000 Btu/h Ø5/8 Ø3/8
Table 29: Connection Socket Dimensions.
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 Ø5/8 Ø3/8
15,000 Btu/h: Console;
18,000 Btu/h: Low Static Duct,
Four-Way Cassette
Ø1/2 Ø1/4
24,000 Btu/h Ø1/2 Ø1/4
36,000 Btu/h Ø5/8 Ø3/8
Correctly route the piping so it does not make contact with mount-
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