36
6
Hydronic piping
DIR #2000546062 01
BOILER 1
T P
MAKE UP
WATER
P
TO
SYSTEM
FROM
SYSTEM
LEGEND
AIR SEPARATOR
CIRCULATION
PUMP
FLOW CHECK VALVE
PRESSURE GAUGE
P
TEMPERATURE &
PRESSURE GAUGE
T P
SYSTEM SUPPLY
SENSOR
BACKFLOW
PREVENTER
MAGNETIC SEPARATOR
WATER METER
STRAINER / FILTER
PRESSURE
REDUCING VALVE
PRESSURE RELIEF
VALVE
BALL VALVE
EXPANSION TANK
PIPING
DRAIN PORT
DIFFERENTIAL
PRESSURE
BYPASS VALVE
2 WAY MOTORIZED
VALVE (OPTIONAL)
MIXING VALVE
ANTI SCALD
FLOW SWITCH
OPTIONAL
WIRING
BOILER 2
T P
Figure 6-5
Multiple Boilers - Alternate - Fixed or Variable Flow Primary System Piping
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. Connection locations shown are for reference only
and will vary with boiler type.
NOTICE
CAUTION
Mixing valves are required for the protection of low temperature loops.
Installation & Operation Manual
Model
Number of Units
2
3
4
5
6
7
8
Manifold Pipe Sizes in Inches (mm)
1000
4 (102)
5 (127)
6 (152) 8 (203) 8 (203) 8 (203) 10 (254)