Instruction manual

SUPPLEMENTARY/CENTRAL
WOOOSURNING FURNACE MODEL 622
DAKA Corporation' 955 Industrial St NE • Pine City, Minnesota' 55063
Phone [phone] • Fax [phone] • www.dakacorp.com
INSTALLATION AND OPERATION INSTRUCTION MANUAL
NOTE: These models have been tested and listed in accordance with
Underwriters Laboratories standard UL
391 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 single 1580-cfm side mounted blower may be
required for larger homes with longer ductwork. As wood burning requires periodic
attention, use ofthis unit as a central furnace is somewhat inconvenient and re-
quires a second heating system (electric baseboard, vented gas room heaters,
etc.) to act as a backup.
Page 1 of 17 DAKA Furnace Model 622
2008 Edition
Rev
1: 7-6-11