LAARS Mascot LX MLXC 175 MBH - Install and Operating Manual - Manual (Page 28)

LAARS Heating Systems Page 24
Figure 17. Hydronic Piping — MLXC Multi boilers for large homes with long / multiple radiant zones.
Zones with: -zone v
alv
es 24V
-balancing v
alv
es
1-
1 4
"
Primary loop
M
ulti M
ascot LX boilers for
Large house
residential w
ith long / muliple radiant zones
* Closely spaced tee's - 4 pipe diam
eters apart
Purge/drain v
alv
es
Note
: Ex
pansion tank m
ay be required
if system
v
olum
e is ov
er 50 gallons
Sedim
ent trap
Expansion tank and auto feed
* *