Shut-Off Valves; Filters; Thermostatic Valves - Central Boiler Pallet Burner Dual Fuel Owner's Manual

Fig. 13
Fig. 14
If not mounted on the outdoor furnace, the circulation
pump(s) must be mounted 4 to 5 feet lower than the top
water level in the outdoor furnace (see Fig. 15).
Fig. 15
Water Level
4 ft. min.

Shut-Off Valves

Shut-off valves should be installed on both sides of each
pump so if it becomes necessary to repair or replace the
pump, the pump can be isolated.

Filters

A Y-strainer or filter may be installed at the outlet side
of the pump to remove foreign particles which may be
present in the water. Always install Y-strainers with the
cleanout in the lowest position.
14
Building to be heated
Ground
Pump must be installed
Level
in the hot supply line
and may be located
inside this building
© 2015 Central Boiler

Thermostatic Valves

NOTE: A thermostatic valve with installation
instructions is included with each new Pallet
Burner and must be installed on each set of
supply and return lines or warranty can be voided.
NOTE: For additional thermostatic valves (3/4" or
1-1/4" thermostatic valves are available), contact
your authorized Central Boiler dealer.
NOTE: The thermostatic
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 firebox 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
efficiency and require less maintenance. Failure to
follow proper operating instructions may result in
furnace damage.
Fig. 16
Hot Supply from Pump
on Outdoor Furnace
Return to
Outdoor Furnace
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 fired, the
thermostatic valve is not required.
Section 1 - Furnace Installation
valves illustrated
Ball Valve
Hose Bib
Thermostatic Valve