Bradford White Brute MagnaTech BMGV1600 Installation And Operation Instructions Manual page 31

Space heating zone circuit
Air vent
Water feed
controls
Expansion tank
4 pipe dia. max.
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.
Figure 12. Hydronic Piping — Multiple Boilers, Indirect DHW Off of One Boiler
Space heating zone circuits
4 pipe dia. max.
Common piping must be sized for the
combined water flow of all the boilers.
High temp. space heating zone circuit
4 pipe dia. max.
Page 27
Note - Anti-scald
Indirect pump mixing valve
must be sized
for boiler and
indirect
Domestic
Indirect
hot water
DHW tank
out
Cold
water