UTICA BOILERS UB95M-200 Installation, Operation & Maintenance Manual page 40

Gas-fired direct vent modulating hot water boiler
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APPENDIX A - BOILER PIPING AND WIRING
Piping Diagram 7 : Primary/Secondary Piping With Zone Valves And Domestic Hot Water (With Circulator)
ZONE VALVE
MAX = 4 X DIAMETER
CLOSELY - SPACED
TEES
*SEE NOTE
NOTE: RECOMMENDED FOR ANTIFREEZE APPLICATIONS
40

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