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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:
Supplementary "Add-On" Furnace Application (See FIG. 1)
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.
Page 1 of 17
DAKA Furnace Model 622
2008 Edition
Rev 2B: 11-9-12
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Summary of Contents for DAKA 622
- Page 1 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.
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Page 2: Cautionary Notes
6. This furnace must be installed on a non-combustible floor surface such as concrete or 3/8" asbestos millboard. This surface must extend at least 16" in front and 8" to side of DAKA furnace, under the chimney connector and at least 2" to each side of connector. Clearances to combustible surfaces are: To side wall: 18"... - Page 3 If creosote has accumulated it should be removed to reduce the risk of a chimney fire. Use of a smoke vent thermometer to monitor stack temperature is recommended. Page 3 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
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Page 4: Installation Instructions
No. 12 x ½" screws provided, and then attach 60-cfm draft blower (9) to adapter plate using three No. 12x ½” screws. TIP: Put a drop of oil on each screw thread to ease insertion in heavy-gauge steel. Page 4 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12... - Page 5 Locate the 34” long flex conduit that contains 1 brown and 1 white wire. Attach flex conduit and make wire connections according to Wiring Schematic in FIG. 6 & 6A. Page 5 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 6 IMPORTANT: The 90 elbows within the supply plenum forms a venturi to extract air from DAKA furnace when primary furnace blower comes on. An absence of these elbows will cause backpressure down the warm air pipe to the DAKA furnace, adversely affecting heat distribution, and possibly °...
- Page 7 Connect cold air return of primary furnace to DAKA filter box using a minimum 10” diameter pipe. NOTE: After attaching warm and cold air supply and return pipes to primary furnace, check entire system to insure that static pressure remains unaffected.
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Page 8: Operating Controls
VII. OPERATING CONTROLS A. Fan Controls The fan control on the side of the DAKA furnace has a rotating thermostat disc. Holding the disc firmly in place, adjust the three tangs for these three settings from left to right as follow: FAN OFF - 90°, FAN ON - 130°, LIMIT - 200°. - Page 9 4. The air jacket top and side may be removed to provide more radiant heat to help cool the firebox. CAUTION: DO NOT expect the DAKA furnace to keep the house as warm during a power failure as when power is on. Do no attempt to increase heat output by opening ash door or fire door.
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Page 10: Troubleshooting
C. DAKA Furnace Blowers Both the front and rear blowers on your new DAKA Furnace Model 622 have permanently lubricated bearings. Re-lubrication is NOT required. Vacuum away dust and dirt on motor air inlets and also on blower impellers at least once each season. - Page 11 If problems persist, or help is needed in installation or operating of furnace, contact: Customer Service Department DAKA Corporation 955 Industrial St. N.E. Pine City, MN 55063 (320) 629-6737 Page 11 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 12 N - COLD AIR RETURN GRILL O - COLD AIR PLENUM P - WARM AIR PLENUM Q - DUCT END CAP R - COLD AIR RETURN DUCT Page 12 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 13 From Horizontal Ducts within 6 Ft. of Plenum – 6” From Horizontal Ducts beyond 6 Ft. of Plenum – 0” FIG. 4 – Clearances to Combustibles FIG. 5 – Alternative Warm Air Plenum Pipe Insert Designs Page 13 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 14 FIG. 6 – Wiring Schematic Page 14 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 15 - 1 FROM POWER SUPPLY - 1 FROM REAR BLOWER - 1 FROM POWER SUPPLY WIRING FROM WIRING FRONT REAR BLOWER DRAFT BLOWER CUSTOMER PROVIDED POWER SUPPLY Page 15 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
- Page 16 1-20” conduit, 2 straight conduit connectors) 273B Instruction Manual (A) 66700021 A. Parts Bag #36315 B. Bolt Bag #36310 C. Forced Draft Assembly Box #32300 All other components are individual parts. Page 16 of 17 DAKA Furnace Model 622 2008 Edition Rev 2B: 11-9-12...
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Page 17: Limited Warranty
DAKA will repair or replace defective components, at our option, at no charge for parts and labor, and will pay freight charge for one-way shipment for warranty claims during first year.
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