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1. See Figures 5 and 6 for basic zoned system layouts.
2. Run each zone pipe down then up to zone to
prevent air accumulation in piping.
3. If required, provide means to isolate and drain each
zone separately.
TO SYSTEM
ZONE ZONE ZONE
5 2 1
I
ZONE
VALVES _z
I
_Z
J
_Z
CONNECT
TO
SUPPLY
FROM SYSTEM
ZONE ZONE ZONE
1 2 5
BALANCING
VALVES
CONNECT TO
RETURN
(CIRCULATOR INLET)
tl
Figure 5: Zone Piping with Zone Valves
TO SYSTEM
ZONE ZONE ZONE
5 2 !
FROM SYSTEM
ZONE ZONE ZONE
1 2 5
FLOW
CONTROL
VALVES
! I .11
CONNECT
TO
SUPPLY
ZONE
CONNECT TO
TAPPING
±
Figure 6: Zone Piping with Circulators
6
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