Connecting Supply And Return Piping - UTICA BOILERS SFH Series Installation, Operation & Maintenance Manual

1. Connect supply and return piping� See Figure #6� When
boiler is used in connection with refrigerated systems:
A� Chilled medium must be in parallel with boiler�
B� Use appropriate valves to prevent chilled medium
from entering heating boiler�
2. During heating cycle open valves A and B, close valves
C and D�
3. During cooling cycle open valves C and D, close valves
A and B�
A� Maintain minimum clearance of one inch to hot
water pipes�
In air handling units where they may be exposed to
refrigerated air circulation, boiler piping system MUST be
supplied with flow control valves or other automatic means
to prevent gravity circulation of boiler water during cooling
cycle�
Figure #6 Typical Piping Configuration

7 - CONNECTING SUPPLY AND RETURN PIPING

4. Hot water boilers installed above radiation level must
be provided with low water device either as part of
boiler or at time of boiler installation�
5. When boiler is connected to heating system utilizing
multiple zoned circulators, each circulator must be
supplied with flow control valve to prevent gravity
circulation�
* Reduced pressure back flow preventer shall be used under
provisions required by the Environmental Protection Agency,
(EPA).
6. Bypass piping is an option which gives ability to
adjust supply boiler water temperature to fit system
or condition of installation� Although, this method of
piping is not typically required for baseboard heating
systems�
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P/N 240009735, Rev. G [09/30/2016]