Johnson Controls YVAHP072B31S, Service Manual

Page: 880 / 1796

Allow adequate space for elbow, angled, and irregular piping arrangements to compensate for
expansion and contraction brought on by temperature change.
4. Installation Work
4.1 Piping Connection Size
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with the pipe size.
Model
Branch Pipe for
High/Low Pressure Gas Line
Branch Pipe for
Liquid Line
Reducer for
High/Low Pressure
Gas Line
Reducer for
Liquid Line
MW-NP282A2
ID 3/4
ID 1/2
ID 3/4
ID 7/8
ID 7/8
ID 5/8
ID 1/2
ID 5/8
ID 5/8
ID 3/4
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
ID 1/4
ID 3/8
ID 1/4
ID 3/8
ID 3/8
ID 3/8
OD 1/4
MW-NP452A2
ID 1/2
ID 5/8
ID 1-1/8
ID 1-1/8
ID 1
ID 3/4
ID 7/8
ID 7/8
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
ID 1/2
ID 1/4
ID 3/8
ID 3/8
ID 1/2
ID 1/2
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
OD 1-1/8
ID 1
ID 5/8
ID 7/8
ID 3/4
ID 1/2
ID 3/8
OD 1/4
ID 5/8
OD 1/2
MW-NP692A2
ID 1/2
ID 5/8
ID 1-1/8
ID 1-1/8
ID 1
ID 3/4
ID 7/8
ID 7/8
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
ID 3/8
ID 3/4
ID 5/8
ID 1/2
ID 3/8
ID 1/2
ID 5/8
ID 5/8
ID 7/8
ID 1/4
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping) OD 1-1/8
ID 1
ID 5/8
ID 7/8
ID 3/4
ID 1/2
ID 3/8
OD 1/4
ID 1-1/8
OD 7/8
ID 1-3/8
OD 1-1/8
MW-NP902A2
ID 1-1/2
ID 1-1/8
ID 1-1/4
ID 1-1/2
ID 1-3/8 ID 1-1/4
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
ID 7/8
ID 7/8
ID 5/8
ID 1/2
ID 3/8
ID 3/4
ID 5/8
ID 3/4
ID 5/8
ID 1/2
ID 3/8
ID 1/4
(To Outdoor Unit)
(To Indoor Unit)
(To Main Piping)
ID 7/8
ID 1
ID 1-1/8
OD 1-1/4
ID 3/8
OD 1/4
OD 1-1/8
ID 1
ID 5/8
ID 7/8
ID 3/4
ID 1/2
ID 3/4
OD 5/8
ID 1-3/8
OD 1-1/8
ID 1-3/8
OD 1-1/4
ID 1-5/8
OD 1-1/2
Unit: inch, ID: Inner Diameter, OD: Outer Diameter
(Qty. 2)
(Qty. 2)
(Qty. 2)
(Qty. 2)
6HUYLFH0DQXDO
INSTALLATION