Delta 35, F-25, 30, 45, 40 warranty Primary Piping, • Install balancing valves to

Primary Piping

2

1

2

12" max.

	6	6
	3	3
2	2	2
	L	L
	O	O
	A	A
	D	D
2
	2	2
	3	3
	5

•Size primary manifold for total flow of all circulators

•Size each circulator to indi- vidual circuit requirements

•Install balancing valves to adjust flow to distribute heat to all zones

Fig. 8: Primary piping - Zoning with Circulators

6
2
4	4
12" max.
1	2
2		• Install balancing valves to
L	L	adjust flow to distribute
		heat to all zones
O	O
A	A
D	D

2	2
2

5

Fig. 9: Primary Piping - Zoning with Zone Valves

1.	Appliance circulator	5. System purge valve
2.	Shut-off valves	6. System circulator
3.	Flow check valve
4.	Zone valve	Note: See page 20 for near appliance piping.
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