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Page 30
Suggested Boiler Piping Schematics (continued)
NOTE: This drawing is a schematic
representation of a piping style and is not
intended to be used as a working installation
drawing. Local code requirements must be met.
Anti-scald
mixing valve
Domestic
hot water
out
NOTE: This drawing is a schematic
Cold
representation of a piping style,
water
and is not intended to be used
as a working installation drawing.
Local code requirements
Indirect DHW tank
must be met.
NOTE: Indirect pump must be
sized for boiler and indirect
Figure 6.
Boiler Piping — Multiple Boilers, Multiple Temperature Zones, Reverse Return.
Space heating zone circuit
Air vent
Water feed controls
Expansion tank
4 pipe dia. max.
Zoning with circulators and DHW Cascade Option.
Space heating
zone circuits
4 pipe dia. max.
Common piping must be sized for the
combined water flow of all the boilers.
LAARS Heating Systems
Low temp. radiant zone
4 pipe dia. max.
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