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INSTALLATION
FIGURE 4 - SAMPLE PIPING LAYOUT, PRIMARY ONLY VARIABLE FLOW PIPING; SINGLE BOILER
ENDURA XE SERIES
CONDENSING BOILER
HEATING HOT
WATER RETURN
FIGURE 5 - SAMPLE PIPING LAYOUT, PRIMARY ONLY VARIABLE FLOW PIPING; MULTIPLE BOILERS
Note: Sample piping layout (P&ID) is a general representation of system installation. Good practice should be used in system
design, including but not limited to adequate pipe/valve sizing and natural flow path for system water.
2-8
ENDURA XE SERIES
CONDENSING BOILER
SUPPLY WATER
TEMPERATURE SENSOR
NOTE: INSTALL 5 TO 10 PIPE
DIAMETERS DOWNSTREAM
OF THE LAST BOILER
AIR REMOVAL
NOTE: WITH #4 OR
FINER MESH STRAINER
SYSTEM
(SECONDARY)
PUMP(S)
HEATING HOT
WATER RETURN
SYSTEM
AIR REMOVAL
(SECONDARY)
PUMP(S)
REVERSE
RETURN
2-POSITION MOTORIZED
ISOLATION VALVE
NOTE: MAY BE INSTALLED
ON EITHER THE BOILER
INLET OR OUTLET, BUT
NEVER ON BOTH
EXE-IOM-230112
HEATING HOT
WATER SUPPLY
EXPANSION TANK
NOTE: MUST BE INSTALLED ON
THE SUCTION SIDE OF THE
SECONDARY PUMP(S) AND
PRE-CHARGED PRIOR TO
FILLING SYSTEM
HEATING HOT
WATER SUPPLY
CHECK AND
BALANCE VALVE
EXPANSION TANK
NOTE: MUST BE INSTALLED
ON THE SUCTION SIDE OF
THE SECONDARY PUMP(S)
AND PRE-CHARGED PRIOR
TO FILLING SYSTEM
© Fulton Group N.A., Inc. 2023
SECTION 2
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