Installation Guide
34 Page
-Installaon with dedicated return line-
Check valves must be installed on both of the cold water line and return line.
Please refer to the above diagram.
NOTICE
Model 540P Indoor 540P Outdoor
Maximum Pipe length*
(Hot Water supply line and
Dedicated Return line)
Pipe
Diameter
3/4"
(19 mm)
500 ft (152.4 m)
1/2"
(13 mm)
200 ft (61.0 m)
*These are equivalent length that includes head loss for elbows, tees, unions, etc. An additional pump may be
necessary for circulation systems with longer equivalent pipe lengths.
Air vent
Air
separator
S
Check valve
Check valve
Y-Strainer
Cold water inlet
Expansion tank
Gas supply
Ball valves
Unions
Hot water outlet
Cold water inlet
Gas inlet
Pressure
relief valve
This is a concept drawing only.
Return inlet
Installaon
Installaon Manual