2 of 16
Typical Piping
Warning! Must Install a Pressure Relief Valve and Expansion Tank on Secondary Side
in addition to Units Installed on Primary Side of System.
X - Pump Block (XPB)
HEAT
SOURCE
Supply
Sensor
Return
Sensor
Outdoor
Sensor
Exp
Tank
Pressure
Relief
Input from
Heat Source
Output to
System
X - Pump Block (XPB), delta T Snow Melt System
HEAT
SOURCE
Return
Sensor
Pressure
Relief
System
Supply
Sensor
System
Return
Sensor
Exp
Tank
Output to
System
X - Pump Block (XPB), Multiple Zones - Zone Valves
HEAT
SOURCE
Supply
Sensor
Return
Sensor
Outdoor
Sensor
Pressure
Relief
M
M
Exp
Tank
Output to
System
X - Pump Block (XPB), Multiple Zones - Circulators
HEAT
SOURCE
Supply
Sensor
Return
Sensor
Outdoor
Sensor
Pressure
Relief
Exp
Tank
Output to
System
Supply
Sensor
Return
Sensor
Outdoor
Sensor
Pressure
Relief
X - Pump Block (XPB),
Multiple Temperature System – Circulators
Exp
Tank
Output to
System
Supply
Sensor
Return
Sensor
Outdoor
Sensor
Pressure
Relief
X - Pump Block (XPB),
Multiple Temperature System – Circulators and Zone Valves
M
M
Exp
Tank
Output to
System
Input from
Heat Source
Input from
Heat Source
Input from
Heat Source
Input from
Heat Source
Input from
Heat Source
X - Pump Block (XPB), Primary / Secondary Piping
Radiant Manifold - Supply
Radiant Manifold - Return
Return
Sensor
Pressure
Relief
Supply
Sensor
Outdoor
Sensor
Exp
Tank
Output to
System
Input from
Heat Source
X - Pump Block (XPB), Setpoint Temp with delta T
Radiant Manifold - Supply
Radiant Manifold - Return
Return
Sensor
Pressure
Relief
System
Supply
Sensor
System
Return
Sensor
Exp
Tank
Input from
Heat Source
Output to
System
Typical Installation
Cold
Supply
MIX
H
C
Tempering
Valve
Domestic
Hot
Supply
RADIANT
SYSTEM
X-PUMP
BLOCK
Cold
Hot
WATER
HEATER
Check
Valve
Supply
Return
Exp.
Tank
Relief
Valve
Air
Separator