15
Section 1 - Furnace Installation
Thermostatic Valves
NOTE: A 3/4" thermostatic valve with installation
instructions is included with each new Classic
outdoor furnace and must be installed on each
set of supply and return lines or warranty can be
voided.
NOTE: For additional thermostatic valves, or
for 1-1/4" thermostatic valves, contact your
authorized Central Boiler dealer.
NOTE: The thermostatic valves illustrated
throughout the manual may vary from your
installation. See the installation instructions
provided with the thermostatic valve.
A thermostatic valve must be installed on each set
of supply and return lines in the system to maintain
the outdoor furnace water temperature above 150˚F
(65˚C). Operating the outdoor furnace with the water
temperature less than 150˚F (65˚C) may result in more
condensation in the rebox that can lead to corrosion.
NOTE: The thermostatic valve must be installed
in the building to be heated.
It is recommended that the water temperature setpoint
of the furnace be set to 185˚F (85˚C) to decrease the
likelihood of the water falling to 150˚F (65˚C). As a
result, the outdoor furnace will operate with a greater
efciency and require less maintenance. Failure to
follow proper operating instructions may result in
furnace damage.
Fig. 20
Thermostatic Valve Exemption
If the system includes more than one building and one of
the buildings is heated with an oil, gas or electric boiler
that also serves as a backup for the other building(s)
by keeping the system water temperature above 150˚F
(65˚C) when the outdoor wood furnace is not red, the
thermostatic valve is not required.
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