Haussmann RL - BRANCH LINE PIPING

2-4 RefRigeRation / electRical
P/N 0387183_V
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
BRANCH LINE PIPING
Suction Line – All Defrosts
• Pitch in direction of flow.
• May be reduced by one size at one third of case run
load and again after the second third. Do NOT
reduce below evaporator connection size.
• Suction returns from evaporators enter at the top
of the branch line.
Liquid Line – Off-time and Electric Defrost
• May be reduced by one size after one half the case
load run. Do not reduce below
evaporator connection size.
• Take-offs to evaporators exit the bottom of the liq-
uid line. Provide an expansion loop for each evapo-
rator take-off (minimum 3in. (76 mm) diameter).
Liquid Line – Koolgas Defrost
• Maximum of 6 evaporators per Branch System.
• Increase the liquid line size inside the case by two
sizes over the branch size.
Branch Size In Case Size
1
/2
7
/8
5
/8 1
1
/8
7
/8 1
3
/8
1
1
/8 1
5
/8
1
3
/8 2
1
/8
• Take-offs to evaporators exit the bottom of the liq-
uid line. Provide an expansion loop for each evapo-
rator take-off (minimum 3in. (76 mm) diameter).
The following information is applicable only
for piping Hussmann merchandisers to
Hussmann refrigeration equipment.
Permit Number:
20-05195