Johnstone Supply Equipment Book

VRF

Example System Layout Multi-Zone System - 1 Outdoor w/3+ Indoor

Illustrations are for reference only & do

not replace installation manuals

E F

H

D

C

G

A

I

B

J

Line Set Sizing Guide: Y-Branch to Indoor Units

Line Set Sizing Guide - Outdoor to Y-Branch

Indoor Unit 6K-15K*

Indoor Unit 18k-60k

HVAHP036 HVAHP048 HVAHP060

*When length from Multi- branch kit to indoor unit

C / E / D F / H / G

1/4"

3/8"

3/8"

A

3/8"

3/8"

1/2"

5/8"

exceeds 49 feet, upsize liquid line from 1/4" to 3/8"

B

5/8"* 5/8"* *Upsize Gas pipe to 3/4" when length exceeds 328 feet. 5/8"*

*Line Set Length Requirements and Allowances

Line Set Sizing Guide: Y-Branch to Y-Branch

Model

HVAHP036 HVAHP048 HVAHP060

Max. Total Piping Max. Pipe Length from Outdoor to Indoor Unit Max. Height Diff. between Indoor Units Min. Straight Pipe Required Before and After Y-Branch Min. Pipe Length Required from Outdoor to 1st Y-Branch Max. Pipe Length from 1st Y-Branch to Indoor Unit

15 Ft.

15 Ft.

15 Ft.

3/8" Always 5/8" Always

I

131 Ft.

131 Ft.

131 Ft.

J

24" of Straight Pipe Before and After Y-Branch must be installed before any bends.

984 Ft.

984 Ft.

984 Ft.

492 Ft.

492 Ft.

492 Ft.

49 Ft.

49 Ft.

49 Ft.

All pricing subject to change. More products and information at JohnstoneSupply.com & the OE Touch mobile app. 100121-UP