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Connect water piping(continued)
1. Follow instructions on page 14 and 15 to install
piping near boiler.
2. Zoning with circulators (Figure 8)
a. Size each circulator to individual circuit requirements.
b. Remove circulator (when furnished as standard equip-
ment). See Replacement Parts page36 for circulator
replacemnt part numbers.
c. Install balancing valves to adjust ow to distribute heat
to all zones.
d. Separate relay is required for each circulator.
3. Zoning with zone valves (Figure 9)
a. Install balancing valves to adjust ow to distribute
heat to all zones.
b. Separate transformer is required to power zone valves.
Refer to “Weil-McLain Zone Valve Wiring
Guide” for details.
Zone 1
Zone 2
11
4
1
5
1
5
UO015
3
Zone 1
Zone 2
11
2
2
3
1
5
1
5
UO014
Part number 550-143-013/0621
16
Series 3
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