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DAKA Furnace Model 622
2008 Edition
Rev 2B: 11-9-12
SUPPLEMENTARY / CENTRAL
WOODBURNING FURNACE MODEL
622
DAKA Corporation • 955 Industrial St NE • Pine City, Minnesota • 55063
Phone (320) 629-
6737 • Fax (320) 629-3677 • www.dakacorp.com
INSTALLATION AND OPERATION INSTRUCTION MANUAL
NOTE: These models have been tested and listed in accordance with
Underwriters Laboratories standard UL 391-2010-March 2010 and Sept.
2010 for Solid Fuel Central and Supplementary Furnaces by Warnock
Hersey International, Inc. ICBO Report No. TL116; NER Qa219.
PRINCIPLE OF OPERATION:
These furnace models are designed for conventional up flow residential central forced
air heating systems, to be installed in either of the following ways:
1.
Supplementary "Add-
On” Furnace Application (See FIG. 1)
As a supplementary furnace, these models are connected in parallel to a
conventional primary furnace system, using present ductwork to distribute wood-
heated air throughout the home. As long as the heat produced by the
supplementary furnace keeps the living area temperature above the setting on the
primary furnace wall thermostat, the primary furnace should not burn any gas, oil
or use any electricity beyond that required to run the primary distribution blower.
Should the wood fire fail to provide sufficient heat, however, the primary furnace
will begin operating as usual.
2.
Central Furnace Application
(See FIG. 2)
This furnace also may be used as a freestanding central furnace, with its own
plenums and ductwork. The double 550-cfm blowers provided with this furnace are
often sufficient to provide air distribution for average size homes with relatively
normal size duct runs. NOTE: A large side-mounted multi-speed blower
(DAKA #218) may be required for larger homes with longer ductwork. As wood
burning requires periodic attention, use of this unit as a central furnace is
somewhat inconvenient and requires a second heating system (electric baseboard,
vented gas room heaters, etc.) to act as a backup.
