10
LT 90 Owners Manual
2015
Hot Water Supply from
WoodMaster
Cold Water Return to
WoodMaster
Existing Heat
Zone Return
WoodMaster Water to
Water Heat Transfer Unit
Circulating Pump
for Existing Hot
Water Heating
System
Existing Hot
Water Boiler
Cold Water Return from
Heat Exchanger
Domestic Water
Supply for fi lling
boiler
Cold Water
Return to
WoodMaster
Existing Hot Water Heat
A Water to Water Heat Transfer Unit (0020-052) is used to connect to an existing hot water boiler system.
Note: Any changes that are made to an existing boiler should be done by a qualified
plumber and follow all state and local codes.
In Line Filter and Fill Valve Assembly
The In Line Filter and Fill Valve Assembly (0020-325) must be installed in the cold water return line before the
line exits the building. It should be placed so that a garden hose can be connected between a domestic water
supply and the fill valve.
Hot Water Supply from
WoodMaster
Cold Water Return to
WoodMaster
Existing Heat
Zone Return
WoodMaster Water to
Water Heat Transfer Unit
Circulating Pump
for Existing Hot
Water Heating
System
Existing Hot
Water Boiler
Cold Water Return from
Heat Exchanger
Domestic Water
Supply for fi lling
boiler
Cold Water
Return to
WoodMaster
Filling With Water
Connect a garden hose between a domestic water supply and the furnace fill valve (0020-325), which was
installed in the cold water return line at a point just prior to its exiting the building. Make sure that valves not
being used on the furnace are closed and the valves that are being used are open. Begin filling and inspect for
leaks on all fittings. Repair any leaks that are found. The furnace may also be filled through the vent pipe in
front of the chimney.
Routinely pay attention to the water level light. If the light is not lit, this indicates that the water level is low
and the furnace may need to have water added. Add water until it flows out of the vent pipe. Install the vent
cap into the vent pipe once the furnace is filled with water.
Note: Place the steam saver on the furnace vent once the furnace is full.
Installation
