Weil-McLain WTGO Series Manual page 16

Piping MULTIPLE ZONES:
1. Follow instructions on page 14 and 15 to install piping near boiler.
2. See FIGURE 10 or 11 to complete installation.
3. Zoning with circulators:
a. Size each circulator to individual circuit requirements.
b. Remove circulator (when furnished as standard equipment).
c. Install balancing valves to adjust flow to distribute heat to all zones.
d. Separate relay is required for each circulator.
4. Zoning with zone valves:
a. Install balancing valves to adjust flow 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.
1
2
1
5
Multiple Zoning With CIRCULATORS
FIGURE 10
16
ZONE 2
ZONE 1
1
2
3
1
5
Connect Water Piping
Legend:
1 Isolation valve
2 Flow control valve
3 Circulator
4 Zone valve
5 Drain valve
Multiple Zoning With ZONE VALVES
ZONE 2
ZONE 1
1
5 5
1
1
FIGURE 11
CONTINUED
1
4