Install Instructions

34
4 Hydronic piping
Installation & Service Manual
Primary / Secondary Piping
Figure 4-6_Multiple Boilers Zoned with Circulators
EXPANSION
TANK
AIR SEPARATOR
PRESSURE
REDUCING
VALVE
BACK FLOW
PREVENTER
BALL VALVE
(
TYPICAL)
PRESSURE
R
ELIEF
VALVE
(TYPICAL)
FLOW CHECK
VALVE (TYPICAL)
INDIRE
CT DHW
TANK
BOILER 1
PRESSURE
GAUGE
DRAIN
( TYPICAL )
DRAIN POINT
(TYPICAL)
CO
LD W
ATER IN
HOT WATER OU
T
MAKE UP
WATER
Y
-STRAINER
(
TYPICAL)
TEMPERATURE
LOOP 1
TEMPERATURE
LOOP 2
TEMPERATURE
LOOP 3
BOILER 2
FROM SYSTEM
TO SYSTEM
DOMESTIC
HOT WATER
CIRCUL
ATOR
BOILER CIRCULATOR
TEMPERATURE /
PRESSURE GAUGE
( TYPICAL)
UNION (TYPICAL)
ANTI-SCALD
MI
XING VALVE
SYSTEM SUPPLY
SENSOR
( WHEN USED )
PRESSURE
R
ELIEF
VALVE
M
AY
SUBSTITU
T
E LOW
L
O
SS HEA
D
E
R
N
OT EXCEED
12"
APAR
T
DRAI
N
F
LOW CHECK
V
A
L
V
E
WATER
METER
DIR #2000570579_000
DIRT SEPARATOR
(RECOMMENDED)
Please note that these illustrations are meant to show system piping concept only, the installer is responsible
for all equipment and detailing required by local codes.
NOTICE