Lochinvar Squire SIT040DW Installation & Operation Manual page 8

3
Boiler side piping
Figure 3-2 Piping Diagram Zoned with Valves
PRESSURE
PRESSURE
REDUCING VALVE
GAUGE
BACKFLOW
PREVENTER
MAKE UP WATER
AIR SEPARATOR
EXPANSION
TANK
DRAIN POINT
(TYPICAL)
BALL VALVE
(TYPICAL)
UNION
(TYPICAL)
TEMPERATURE /
PRESSURE
GAUGE
DRAIN
PRESSURE
RELIEF VALVE
Please note that these illustrations are meant to show system piping concept only, the installer is responsible
NOTICE
for all equipment and detailing required by local codes.
Please note that the installer is responsible for ensuring DHW prioritization when piped as a zone.
NOTICE
8
ZONE #1
SYSTEM SUPPLY
SENSOR
(WHEN USED)
SYSTEM
CIRCULATOR
NOT TO EXCEED 4 PIPE DIA.
OR A MAXIMUM OF 12" APART
Y-STRAINER
BOILER
CIRCULATOR
SOLUTION
BOILER
Installation & Operation Manual
ZONE #2
ZONE #3
HOT
WATER
OUT
DRAIN
SQUIRE
( FIELD SUPPLY )
ZONE #4
ZONE VALVES
(TYPICAL)
DIFFERENTIAL
PRESSURE BYPASS
VALVE (IF USED)
ANTI-SCALD
MIXING VALVE
COLD
WATER
IN
RELIEF VALVE
TANK SENSOR/
AQUASTAT
RECIRCULATION
PUMP
CHECK VALVE