Filter
Top Products
31Part number 550-141-850/0699
• Installation • Start-Up • Parts • Maintenance
Water piping — baseboard systemIIIe
Figure 11a Baseboard system (finned tube or
cast iron) — zone valve zoning
Zone 2
Zone 1
85013a
Cold water fill
GV Boiler
Figure 11b Baseboard system (finned tube or
cast iron) — circulator zoning
Zone 2
Zone 1
85017
Cold
water
fill
GV Boiler
12"
max
Legend
1 Boiler isolation valves
2 Automatic air vent (with diaphragm-type
expansion tank), or connect to tank fitting
(closed-type expansion tank).
3 Diaphragm- or bladder-type expansion tank, if
used. (For closed-type expansion tank, pipe
from top of air separator to tank fitting as in
Figure 10.)
4 Zone valve
5 Zone circulator
6 Flow/check valve
7 Hose bibb purge valve
8 Boiler pressure/temperature gauge
Baseboard system piping
Apply Figure 11a (zone-valve zoning) or 11b (circulator
zoning) to systems using baseboard heaters. The heaters
can be any baseboard style, including finned tube or cast
iron.
The boiler internal “System circulator” can be used to
circulate most zone-valve zoned systems as shown in
Figure 11a. For systems requiring higher flow, apply the
suggested piping of Figure 12a.
The boiler internal circulators must be left in the boiler.
They cannot be removed for use a a zoning circulator.
Provide a circulator for each zone when circulator zoning,
and pipe the system as in Figure 11b.