Central Boiler CLASSIC Owner's Manual page 12

12
Fig. 11
Do not use a drain tile pipe, bubble wrap, or PVC pipe
for water lines unless these pipes can be installed in a manner
that allows the drainage of any water that could possibly
enter. If the water supply and return lines are not insulated
properly, there can be excessive heat loss. This heat loss
can greatly increase the wood consumption.
For a single building water to air heat exchanger system,
the direction of water flow is to be as follows: from hot
outlet on the outdoor furnace to the bottom of the domestic
water heater exchanger, to the lower fitting of the heat
exchanger on the existing furnace, and returned to the cold
return of the outdoor furnace.
NOTE: The direction of water flow is very important
for the proper operation of the furnace.
The circulation pump(s) must be installed in the hot
supply line(s) with the arrow on each pump pointed away
from the furnace. In order to avoid circulation problems, do
not install the pump(s) in the return line(s).
Fig. 12
Section 3 - Furnace Installation