Starting Your Boiler - UTICA BOILERS UHSW Series Installation, Operation & Maintenance Manual

NOTICE
Do not add water into hot empty boiler.
Filling System With Water
• Close air vents on all radiation units. Open valves to
these units.
• Verify boiler and expansion tank drain valves are closed.
Air bleed screw on tank drain fitting should be closed.
• Open valve in line from boiler to expansion tank.
• Open water inlet to your boiler and leave open.
• Start with lowest radiation unit. Open air vent on this
unit. When all air has escaped and water starts to flow
from vent, close it.
• Go to next radiation unit, and repeat this process.
• Repeat until you have covered every radiation unit in
system. End at highest unit in system.
• If units have automatic vents, manual venting is
unnecessary but it will speed up proper filling of system.
• If system is closed expansion tank system, you may
have automatic fill valve. Leave it open to refill system
automatically as needed.
• Check temperature-pressure gauge. Note position of
hand indicating pressure. This should be between 10
and 15 psi. Any lowering of this movable hand below
10 psi indicates loss of water due to leakage. Automatic
fill valve should compensate for this. Instructions are
packaged with valve.

STARTING YOUR BOILER

24
PN 240012689 Rev. A [05/15/2019]