9
LT 90 Owners Manual
2015
Entering the building with water lines can be done underground or over the sill plate. Once inside the building
the typical hookup would run first to the Domestic Hot Water Supply and next to an existing heating system
such as a forced air furnace or a hot water heating system. Finally, before leaving the building, a fill valve must
be installed near a water supply for filling and flushing the boiler in the WoodMaster Furnace.
Domestic Hot Water
The Domestic Hot Water/Flat plate Kit consists of a Wa
-
ter to Water Heat Transfer unit and the fittings needed
to hook it up. The unit mounts on the wall
VERTICALLY
in your utility room and is connected as shown.
Existing Forced Air
A water to air heat exchanger is inserted in the existing
plenum. In most cases the heat exchanger is placed in
a horizontal position, keeping all four sides level. The
air must be forced through the finned area of the heat
exchanger evenly. The hot water line coming from the
hot-water tube enters the bottom fitting of the heat
exchanger and exits the top fitting, which returns to
the furnace. If the plenum is too large or too small, it
must be altered to fit the heat exchanger properly.
Note: The water to air heat exchanger must be in
-
stalled below any existing off-peak electric coils
already in the plenum.
After the installation of the WoodMaster add-on water
to air exchanger, the air flow may need to be increased
to fuel furnaces, electric furnaces, and electric/gas
furnaces. Methods of doing this are:
Belt Drive System
Blower pulleys and motor pulleys may be changed but
the electric current flowing through the motor shall not
exceed the nameplate rating. (A blower motor of larger
power may be used.)
Direct Drive System
The motor shall not be changed, however the speed of
the motor may be increased.
water in
WoodMaster
water out
Domestic Cold
Water in
Domestic Hot
Water out
WoodMaster
The heat exchanger works on the same princi-
pal as your car heater. Air blows through the
heat exchanger, taking the heat from the water
and blowing it into your existing duct work.
Hot Water Supply from WoodMaster
(Always put supply in lower port.)
Cold Water Return to
WoodMaster
Installation
