18
Boiler Manual
Cascade Multiple Elite Heating Boiler
®
with
Indirect Priority on One Boiler
(PURGE POINT)
MAKE-UP
FOLLOWER
ELITE BOILER
TANK
FROM SYSTEM
DRAIN VALVE
DOMESTIC
TO SYSTEM
PRESSURE
BALL VALVE
VALVE
MASTER
ELITE BOILER
VALVE
MIXING
DRAIN VALVE
(TYPICAL)
INDIRECT
OUTLET
ANTI-SCALD
PRESSURE
HOT WATER
(TYPICAL)
SPACING MAXIMUM
GAUGE
(TYP)
BALL VALVE
CIRCULATOR
(TYPICAL)
(TYPICAL)
BOILER CIRCULATOR
PREVENTER
TANK
HOT WATER
RELIEF VALVE
SWING CHECK
VALVE
4 PIPE DIAMETER
SYSTEM
HOT WATER
(TYPICAL)
WATER
AIR ELIMINATOR
EXPANSION
BACKFLOW
(TYPICAL)
DRAIN
REDUCING VALVE
PRESSURE GAUGE
CIRCULATOR
UNION
OUTLET
COMBINATION
FITTING
COLD WATER
INLET
SUPPLY SENSOR
(OPTIONAL)
LP-293-Q Rev. 1/14/10
PART 5: BOILER PIPING
(CONTINUED)
NOTES:
1. This drawing is meant to show system piping concept only.
2. An Anti-Scald mixing valve is recommended if the DHW temperature is set above the factory setting
of 119°F.
3. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
4. Piping shown is Primary/Secondary
5. Reference Figure 5-2 to determine manifold pipe sizing.
6. System Flow (Secondary Loop) must be greater than the boiler’s primary loop flow.
7. Installations must comply with all local codes.
8. In Massachusetts, a vacuum relief must be installed in the cold water line per 248 CMR.
Содержание EL-110 LP
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