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Figure
20 = Piping
and
Wiring
Multizone
System
With
Zone Valves
And Domestic
Hot Water
Priority
(With
Circulator)
ZONE
4
WATER
tNLET
BOILER
_USE
FULL
PORT
ZONE
VALVE
CH
ZONE
3
ZONE
2
DHW
CIRCULATOR
ZONE
1 (PRIORITY
ZONE)
I,?
t
I
120VAC
HYDROSTA]
MODEL 3250
L
N
24VAC FROM
TRANSFORMER
120VAC TO
TRANSFORMER
TO OIL
BURNER
rll
ZONE VALVE / PUMF
INDIRECTWATER
rll
PRIORITY
HEATER, AQ UASTAT
_
ZR-ZC
OR THERMOSTAT
_
DPM-2
OPTION SWITCHES
/
KEY
,'
_/,,/
/
OPT
ON S,,_
TCHES
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