Laars MagnaTherm HTD Series Installation And Operation Instructions Manual page 32

Page 28
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.
Air vent
Expansion tank
4 pipe dia. max.
Anti-scald
mixing valve
Domestic
hot water
out
Cold
water
Indirect DHW tank
Note - Indirect pump must be sized for boiler and indirect
Figure 11. BoilerPiping—MultipleBoilers,IndirectDHWOffofOneBoiler
Space heating zone circuit
4 pipe dia. max.
Water feed
controls
Common piping must be sized for the
combined water flow of all the boilers.
4 pipe Dia. Max
LAARS Heating Systems
High temp.
Space heating
space heating zone circuit
zone circuits
4 pipe dia. max.