Operating instructions

HowA Hot Water System Operates
Your entire heating system (boiler, piping and radiation units) is
filled with water. As the water in the boiler is heated, it is pumped
from the top of the boiler through the supply main to the radia-
tion units. The cooler water in them flows back through the return
main to the boiler. This provides positive and rapid response to the
thermostat.
Never run water into a hot empty boiler.
Filling System With Water
Close the Air Vents on all radiation units. Open the Valves to these
units. Make sure the boiler and Expansion Tank Drain Cocks are
closed. The Air Bleed Screw on the tank Drain Fitting should be
closed. Open the valve in the line from the boiler to the expansion
tank. Open the water inlet to your boiler and leave it open. Start with
the lowest radiation unit. Open the air vent on this unit. When all
the air has escaped and water starts to flow from the vent, close it.
Go to the next radiation unit, and repeat this process. Repeat until
you have covered every radiation unit in the system (ending up at
the highest unit in the system). If your units have automatic vents,
this manual venting is unnecessary but it will speed up the proper
filling of your system.
If your system is a closed expansion tank system, you may have an
Automatic Fill Valve. You may leave it open to refill the system au-
tomatically as needed. Check the temperature-pressure gauge. Note
the position of the hand indicating pressure. This should be between
10 and 15lbs. Any lowering of this movable hand below 10lbs. will
indicate loss of water due to leakage. The automatic fill valve should
compensate for this. Instructions are packaged with the valve.
: Thisappliance isequipped with an ignition devicewhich
automaticallylights the burner. Do not attempt to light the
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Ifyou do not follow these instructions exactly, fire or ex-
plosion may result with property damage, personal injury,
or lossof life.
BEFOREOPERATINGsmellall around the appliance area
forgas. Besure to smellnext to the floor because some gas
isheavier than air and will settle on the floor.
IF YOU SMELL GAS:
1. Do not attempt to operate any appliance,do not
m
touch any electrical switch, do not use the phone.
2. Leave the building immediately and call your gas
supplier.
3. Ifyour gas supplier cannot be reached,call the fire
department.
When turning or depressing the gas control knob, use only
...... your hand to push down or turn the knob. Never use tools.
If the knob will not operate by hand, the control must be
replacedby a qualified service technician. Force or at-
tempted repair may result in a fire or explosion.
Ifany part of this appliance has been under water,do not
operate. Immediately calla qualifiedservice technician
to inspect the applianceand to replaceany part of the gas
control systemwhich has been under water.