CSVB Series II - Columbia Heating

STARTING YOUR BOILERNOTICEDo not add water into hot empty boiler.Filling System With Water• Close air vents on all radiation units. Open valves tothese 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 thisunit. When all air has escaped and water starts to flowfrom vent, close it.• Go to next radiation unit, and repeat this process.• Repeat until you have covered every radiation unit insystem. End at highest unit in system.• If units have automatic vents, manual venting isunnecessary but it will speed up proper filling of system.• If system is closed expansion tank system, you mayhave automatic fill valve. Leave it open to refill systemautomatically as needed.• Check temperature-pressure gauge. Note position ofhand indicating pressure. This should be between 10and 15 psi. Any lowering of this movable hand below10 psi indicates loss of water due to leakage. Automaticfill valve should compensate for this. Instructions arepackaged with valve.24