Daka Corporation Model 622 Service manual
SUPPLEMENTARY/CENTRAL
WOOOSURNING 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
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 asupplementary 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 afreestanding 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: Asingle 1580-cfm side mounted blower may be
required for larger homes with longer ductwork. As wood burning requires periodic
attention, use ofthis unit as acentral furnace is somewhat inconvenient and re-
quires asecond heating system (electric baseboard, vented gas room heaters,
etc.) to act as abackup.
Page 1of 17
DAKA
Furnace Model
622
2008
Edition
Rev
1:
7-6-11
CAUTIONARY NOTES:
1.
This furnace
is
designed for use only
in
conventional
up
flow systems and must
deliver heated air to asupply (warm air) plenum -never to ductwork. The warm
air supply from this furnace must never be connected to the cold-air return inlet of
acentral primary furnace, as apossibility exists
of
components
of
the central
furnace overheating and causing the central furnace to operate other than as
intended.
2.
Installation ofthis unit must be performed by aqualified installer familiar with
solid-fuel systems .
3. This furnace must
be
connected to aminimum
6"
listed Type HT (high
temperature) appliance type chimney or acode-complying tile-lined
masonry chimney. Connection to achimney flue serving another appliance
is
prohibited.
4.
Abarometric regulator/damper may be used
in
the chimney connector (smoke
pipe leading to chimney flue) and must be set to maintain
no
more than .06"
water column updraft (DAKA barometric regulator #283 with adjustable settings
available at extra cost.)
5.
Installation ofthis furnace
in
mobile homes or garages
is
prohibited.
6.
This furnace must be installed
on
anon-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 chimneyconnector and at least 2" to
each side ofconnector. Clearances to combustible surfaces are:
To side wall:
To back wall:
To front wall:
18"
32%"
48"
Flue to back wall:
Flue to side wall: 23"
27"
See FIG. 3for ductwork clearances and FIG. 4for wall clearances. For more
information, including instructions for installations requiring reduced clearances,
please write for publication
211
from National Fire Protection Assn., Inc.,
Publications Dept., 1Battery Park, Quincy MA 02169-7471 orvisit their website
at www.nfpa.org.
7.
Check local building and mechanical codes prior to installation to insure
conformance with all requirements. Review home insurance policy for coverage.
8.
Chimney connector must be of minimum 24-ga. pipe with each section joined with
three sheet metal screws, with all fissures sealed with furnace cement.
Do
not
use galvanized pipe
as
the coating could melt and cause toxic fumes.
Page 2
of
17 DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
9.
These furnaces have been designed to operate with amaximum warm air duct
pressure
of
0.2
11
water column and amaximum warm air duct temperature
of
200°F. When used
in
asupplementary "add-on" mode, check the nameplate
on
the primary furnace to determine compatibility.
10.
When any supplementary furnace
is
connected
in
parallel to an existing primary
central furnace, aback-draft damper must be installed
in
the plenum
of
the
primary furnace below the warm air inlet from the supplementary furnace to
prevent the primary furnace from operating
in
an unintended manner. See FIG. 1
for an illustration ofthe position ofthis damper.
DANGER -RISK
OF
FIRE OR EXPLOSION! DO NOT BURN GARBAGE,
GASOLINE, DRAIN OIL OR OTHER FLAMMABLE LIQUIDS.
WARNING -RISK
OF
FIRE! DO NOT OPERATE WITH FLUE DRAFT EXCEEDING
.06" WATER COLUMN. DO NOT OPERATE WITH FUEL LOADING OR
ASH REMOVAL DOORS OPEN. DO NOT STORE FUEL
OR
OTHER
COMBUSTIBLE MATERIAL WITHIN MARKED INSTALLATION
CLEARANCES. INSPECT AND CLEAN FLUES AND
CHIMNEY
REGULARLY.
CAUTION -HOT SURFACES! KEEP CHILDREN AWAY.
DO
NOT TOUCH DURING
OPERATION. MAXIMUM DRAFT MARKED ON NAMEPLATE.
Disposal
of
Ashes
Ashes should be placed
in
ametal container with atight-fitting lid. The closed container
of ashes should be placed
on
anon-combustible floor or
on
the ground, well away from
all combustible materials, pending final disposal. Ifthe ashes are disposed
of
by burial
in
the soil or otherwise locally dispersed, they should be retained
in
the closed container
until all cinders have thoroughly cooled.
Creosote -Formation and Need for Removal
When wood
is
burned slowly, it produces tar and other organic vapors, which combine
with expelled moisture to form creosote. The creosote vapors condense in the relatively
cool chimney flue
of
aslow-burning fire. As aresult, creosote residue accumulates on
the flue lining. When ignited this creosote makes an extremely hot fire.
The chimney connector and chimney should be inspected at least twice monthly during
the heating season to determine ifacreosote buildup has occurred. If creosote has
accumulated it should be removed
to
reduce the risk
of
achimney fire. Use
of
asmoke
vent thermometer to monitor stack temperature is recommended.
Page 3
of
17
DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
INSTALLATION INSTRUCTIONS:
I.
UNPACKING
Remove all component parts from firebox for assembly; check piece count against
parts list
on
last page
of
this manual. NOTE: Remove
firebrick
from
carton
while
still
within
firebox.
Do
NOT
attempt
to
lift
full
carton.)
Parts shortage: Ifcarton was sealed when purchased, call or write factory
immediately. Provide model number and serial number
of
furnace, found
on
front mounted data plate, along with a
description and quantity
of
missing parts. Replacements will
be shipped. If carton was purchased unsealed, contact store
for missing parts.
Concealed Damage: Ifany components have
been
damaged
in
transit, advise the
dealer from whom the furnace was purchased
of
the nature
of
the problem, so that afreight claim can be filed.
II. FURNACE ASSEMBLY (Refer
to
Parts
List
on page 15)
A.
Attach fire door
(1)
to hinge bracket using hinge pin. IMPORTANT: Refer to
Instructions
in
Hinge Assembly Bolt Bag for proper installation. Note that door
features adouble latch operation to limit initial swing of doorto 1"
on
opening.
Continue turning handle clockwise beyond 3 o'clock position to permit full opening
ofdoor. Close door with handle
in
same position; rotate counterclockwise to lock.
B.
Insert thermal gasket
(6)
between ash door
(5)
and ash pan (7) front, and
assemble using two 1/4" bolts and nuts provided.
C.
Insert Smoke Bypass Damper
rod
(8) through small hole above fire door, handle
pointing
up,
and run
rod
directly back onto smoke baffle plate inside firebox.
Reaching
in
through fire door opening, screw one large nut onto threaded rod all
the way to the
end
of
the thread. Insert threaded
rod
end into the hole
on
the
upright plate
on
the Smoke Bypass Damper sliding plate, keeping the spring
handle upright. Screw
on
the 2
nd
large nut and tighten fully.
D.
Remove cast-iron grate (10) from firebox. Proceed to install firebricks (15) along
sides
and
back offirebox, starting at the front, by slipping brick under retaining
angle iron and standing them upright
on
the grate support rails.
CAUTION: FIREBRICK MUST BE INSTALLED CORRECTLY OR
HEAT DAMAGE MAY OCCUR.
E.
Reinstall cast-iron grate
in
firebox, reinforcing ribs down, resting on side rails.
Insert
3"
x
13%11
X
%"
steel grate spacer (11) at rear ofgrate.
F.
Attach Draft Blower Adapter Plate (21) to front offurnace below fire door using six
No.
12
xW' screws provided, and then attach 60-cfm draft blower (9) to adapter
plate using three No. 12x
%"
screws. TIP:
Put
a
drop
of
oil
on
each
screw
thread
to
ease
insertion
in heavy-gauge steel.
Page
4
of
17
. I
DAKA
Furnace
Model
622
2008 Edition
Rev
1:
7-6-11
G.
Install two 550-cfm blowers (14)
on
back offurnace using four No.
12
x
%"
screws
provided.
H.
Furnace
is
shipped with air jacket already fitted and installed. If it has worked loose
during shipping
or
unpacking, do the following:
1.
Remove air jacket top (15) by lifting up from front to back only, not side to side.
2.
Ensure that bottom airjacket panel (16)
is
fully seated between lower bottom
support angles.
3.
Ensure that channels welded
on
airjacket sides (17) engage the lower support
channels,
and
that the side panels are pressed tightly onto furnace around the
front
and
back corners.
4.
Reinstall the air jacket top from back to front, making sure that all top edges
of
each ofthe air jacket sides are inside oftop.
5.
Install Swing Plate (19)
on
hooks inside combustion chamber above Fire door
opening,
with
bent edge inward.
III. FURNACE CONTROL CENTER ASSEMBLY-See FIG. 6 & 6A
Wiring
Schematic
NOTE: Furnace
is
designed for installation with supply connection on left side;
should right side supply connection be preferred, it
is
possible to exchange side air
jacket panels, but conduit and wiring provided will not be usable then, and will
have to
be
replaced locally.
A.
On
left side air jacket panel, locate the 3/4" hole toward top
of
panel.
B.
Remove cover
on
Fan Control. Using three
1%"
tube spacers provided,
proceed to mount the Fan Control (4) to the side ofthe panel, using
No.
12 x
2"
screws provided.
Fan
Control is to be held 1
%"
away from air jacket side by
tube spacers to provide thermal protection for electronic components.
C.
Approximately
8"
below Fan Control are four pre-punched holes. Mount
Junction
Box
Ring
(2)
here, using two
No.
12
x
2"
screws through slots
on
back
of
ring.
Remove one knockout
on
top of ring and two knockouts
on
bottom.
Install Straight Conduit Connectors provided for unit wiring.
D.
Mount Snap Disc Operating Control (20)
on
side offurnace within Junction Box
Ring, using
two
No.
12
x
%"
screws
in
pre-punched holes.
E.
Insert pre-installed wiring from Fan Control into top center knockout
on
Junction
Box.
Make sure straight conduit connector
is
in
place first.
F.
Connect conduit from front Draft Blower to Junction Box. Remove top
knockout from small Junction Box on front draft blower housing. Insert 90°
conduit connector.
Locate
the
34"
long flex conduit that
contains
1red
and 1white wire. .Attach
flex
conduit
and
make
wire
connections
according to
Wiring
Schematic
in FIG. 6&6A.
G.
Connect conduit from Rear Blowers to Junction
Box.
Remove side knockout
on
Junction Box
on
rear blower housing. Insert 90° Conduit
Connector.
Locate the
34"
long flex conduit that contains 1brown and 1white wire.
Attach flex conduit and
make
wire
connections according
to
Wiring
Schematic
in
FIG. 6&6A.
t
Page 5
of
17 DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
IV. WIRING INSTRUCTIONS -See FIG. 6&6A
for
Wiring Schematic
NOTE:
For
power
supply
connections, use No. 14 AWG
or
larger
wires
acceptable
for
atleast 105°C.
Shut
Off
All PowerWhile Installing.
A.
Attach approved conduit carrying 3-wire 120VAC
15
amp service to any unused
knockout hole
on
J-box ring with conduit connector (not included forfield wiring
connections).
B.
Make all wiring connections per the schematic
in
FIG. 6&6A, making all
connections shown with wire nuts provided. Check all wiring connections for
tightness
and
electrical safety.
C.
Tuck all wires into J-Box Ring, and install Transformer/Relay as J-Box cover.
Reinstall cover plates
on
blower junction boxes.
V.
CONNECTIONS
TO
DUCTWORK
A.
For
Use
As
ASupplementary
"Add-on"
Furnace -See FIG. 1
NOTE: SUPPLY PLENUM MUST BE METAL! Aback draft
damper
must
be
installed in the warm-air
supply
plenum
of
the primary furnace
below
the
point
where the warm
air
ductwork
connection from the DAKA furnace
enters the plenum. Actual design and installation procedure
for
such
a
back
draft
damper is leftto the installer, due
to
the large
number
of
plenum
configurations involved. See FIG. 1&FIG. 5
for
illustration
of
placement.
1.
Mark and cut out two
8"
round holes
in
the side
of
the supply (warm air) plenum
of
the primary furnace.
IMPORTANT: Verify beforehand
that
sufficient
clearance
is
available above
air
conditioner coils, etc.
If
sufficient
clearance is
not
available,
air
conditioner
coil may have
to
be moved
to
asecond plenum
with
diversion
baffles
for
summer use.
2.
Attach each
90°
sheet metal elbow to one end of straight
8"
pipe. Insert elbow
into supply plenum
of
primary furnace with outlet pointing upward. Slip collar
over straight
end
of
8"
pipe and push
up
tight against supply plenum for agood
air seal. See FIG. 1&FIG.
5.
IMPORTANT: The 90° elbows
within
the
supply
plenum
forms
aventuri
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
damaging the DAKA furnace.
If
space
prohibits
installation
of
90°
elbow
as
recommended, see FIG. 5
for
alternate designs.
Page
6of
17
DAKA
Furnace
Model
622
2008
Edition
Rev
1:
7-6-11
3.
Connect cold air return of primary furnace to DAKA filter box using aminimum 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. Verify horizontal
duct
clearances (see FIG. 3).
B.
For
Use
As
ACentral Furnace -See FIG. 2
1.
Install aminimum 16" x16" plenum (PLENUM MUST BE METAL) on airjacket
top with tin snips or sabre saw as needed, using starting collar to attach.
2.
Install ductwork with proper clearances to combustibles
in
accordance with local
bUilding codes.
3.
Make sure to connect acold air return line to the back ofthe cold air filter box that
was supplied with your new 622. Install and assemble the cold air filter box
according to instructions.
VI.
CONNECTING DAKA FURNACE
TO
CHIMNEY
Mount and secure 6" non-galvanized smoke pipe, 24-ga. or heavier, to rear
smoke outlet
on
DAKA furnace. Continue same gauge single-wall pipe to
chimney connection, with following safety rules
in
mind:
1.
Abarometric regulator should be installed
in
smoke pipe at least 18" from
furnace, to permit adjustment
of
chimney draft to amaximum
of
.06
11
water
column draft. Barometric Regulator No. 283 with adjustable draft setting is
available through DAKA for this purpose.
2.
Smoke pipe
should
maintain aminimum
18"
clearance
to
all
combustibles
and
should
never pass through walls
or
ceilings. Use
proper
thimbles
for
those passages.
3.
Heat reclaimers, fins or the like should not be used on smoke pipe, as they tend
to cool flue gases and add to creosote formation on stoves and furnaces
of
advanced airtight design.
4.
All joints
of
chimney connector pipe should be secured with a minimum
of
three No.
7sheet metal screws &further sealed with furnace cement to maintain good draft.
5.
Smoke pipe should normally be installed with male ends leading from chimney to
furnace; should runny creosote be formed
in
chimney connector, it will then return
through pipe to furnace without dripping out
of
joints.
6.
Maintain aminimum of 1/4
11
per foot
of
pipe rise to chimney connection; the
steeper the rise, the more easily draft will be maintained, generally.
7.
Avoid the use
of
90° elbows in any chimney connector, as
they
adversely
affect draft.
If
90° elbows
must
be used,
do
not
install more than
two
in any
chimney connector.
8.
Adequate combustion air must be provided
in
furnace area to prevent poor firing
and smoking. Keep awindow cracked open
in
furnace area or install dryer-type
4"
vent to bring
in
fresh air.
Page
7of
17
DAKA
Furnace
Model
622
2008
Edition
Rev
1:
7-6-11
VII. OPERATING CONTROLS
A.
Fan
Controls
The fan control
on
the side
of
the DAKAfurnace has arotating 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°.
These Fahrenheit settings will cause the 550-cfm back blowers on the DAKA furnace
to turn
ON
when the temperature within the air jacket rises to 130°, and OFF when
the temperature within falls below 90°. The limit setting will shut
off
the front 60-cfm
draft blower should an unsafe bonnet temperature over 200°F be reached. The
blower will be reactivated automatically when the temperature falls to 160°F.
While this fan control is designed for fully automatic operation, you can turn the back
blowers
on
manually at any time by pushing white button on fan control in. Pulling
button out will turn the blower off, unless the heat within the air jacket is above the
"FAN ON" setting
of
the dial,
in
which case the blowers will continue to run until the
temperature drops.
The snap-disc control inside the J-box ring is
an
operating control for the 60-cfm
draft blower, with a built
in
range of 190° OFF 170° ON, to prevent furnace
overheating. During normal operation this control may be activated frequently and is
designed to help level the furnace heat output.
IMPORTANT: In asupplementary "Add-On" installation, the
blowers
on the
DAKA furnace can be used as circulation blowers
for
heating the house.
They also
can
be
used in conjunction with
your
primary furnace
blower
to
boostair circulation in large
ductwork
systems. An optional fan
control
may
need to be located in
supply
plenum
to
turn primary
blower
on and
offwhen
heat is received from the DAKA furnace. (See FIG. 1
for
fan
control
location).
B.
Living Area Wall Thermostat Location (22)
The Honeywell T812A1002D thermostat should be installed
in
any ground floor
room
on
an
inside wall, preferably beside the thermostat governing the primary
furnace, which should be set approximately
5°
lower than the DAKAthermostat.
When falling room temperatures call for heat, the DAKA thermostat turns on the 60-
cfm front draft blower on the DAKAfurnace; the additional combustion air increases
the heat output until the DAKA room thermostat signals the blower to cut off.
Combustion air then reduces to amaintenance level with a relatively low heat
output, ready for the next firing cycle. Should there be insufficient fuel to increase
the room temperature as called for, the primary furnace will fire when the
temperature falls to the 5° lower setting. The DAKA draft blower will continue to run;
however, to turn it off, lower the DAKA room thermostat setting below that
of
the
primary furnace.
Page
8
of
17
DAKA
Furnace
Model
622 2008 Edition
Rev
1:
7-6-11
IMPORTANT: Normal operation
will
produce flue gas temperatures in the
300°· 600°F range.
If
higher
or
lower
operating temperatures are
normally
obtained, increase
or
decrease the barometric draft control setting and room
thermostat setting
to
bring temperatures to within range. Too cool aflue gas
temperature can result in heavy creosote formation,
while
too
hot
a
temperature increases
danger
of
chimney fire.
C.
Smoke Bypass Damper
Due to the extra long smoke baffle
in
this model, designed to create the longest
possible flame
path
for maximum heat extraction, asliding smoke bypass damper
plate, controlled
by
the damper
rod
over the fire door has been provided.
Before
opening fire doorfor reloading or checking fire, pull the damper rod out fully to allow
the smoke to exit at rear
of
chamber, rather than rolling forward and possibly spilling
into the room. After closing fire door, push damper
rod
fully
in
to seal rear vent.
VIII. EMERGENCY OPERATION INSTRUCTIONS
A. Operation During Power Failure
1.
Remove furnace filter(s) to prevent fire hazard.
2.
Continue firing the fire with smaller loads, more frequently tended.
3.
Use extreme care and vigilance during power failure to keep furnace from
overheating, which could cause severe warpage or breakage.
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.
B.
In
Case
of
aChimney Fire:
1.
Call the fire department immediately.
2.
Reduce
room
thermostat to lowest point to shut off draft blower. Use chimney
fire extinguishing flares ifyou have them. (Available at your local home store
or fireplace and woodstove shops).
3.
After chimney fire, do not attempt to use chimney again until aprofessional
inspection
is
made to determine safety.
Page 9of 17 DAKA Furnace Model 622 ·2008 Edition
Rev
1:
7-6-11
I----------~-
i
IX.
MAINTENANCE
OF
YOUR DAKA FURNACE
A. Fueling Procedure
Fill with cordwood (and/or coal, ifapplicable) to the top ofthe firebrick. Before
burning coal,
you
must have acoal burning grate and afire door equipped with a
spin draft (available from dealer or direct from the factory).
B. Flue Pipe and Chimney ,
These must
be
checked frequently during heating season,
and
deposits of soot
and creosote over 1/8" thick removed using stiff-wired brushes designed for the
job. Professional cleaning by achimney sweep at least once aseason
is
highly
recommended.
C.
DAKA Furnace Blowers
Both the front
and
rear blowers on your new DAKA Furnace Model 622 have
permanently lubricated bearings. Re-Iubrication
is
NOT required. Vacuum away
dust and dirt
on
motor air inlets and also
on
blower impellers at least once each
season. CAUTION: TURN OFF
ALL
POWER
TO
UNIT BEFORE CLEANING
AND LUBRICATION.
D.
Fire Chamberand Ash Pan
Check ash
pan
every few days and safely dispose of ashes. Keep ashes from
building
up
on
grate and interfering with combustion airflow from below. At end
of
heating season, clean out all residual ashes from furnace. The moisture they
contain could rust your furnace over the summer months, thereby shortening the
life
of
the unit.
X.
TROUBLE SHOOTING
A. Problem: Smoke
puff
backwhen loading,
poor
burning,
insufficient
heat
Solutions:
1.
Insufficient draft--debris or creosote could be blocking flue; inadequate chimney
height or design could be causing downdrafts; check chimney connector for air
leaks and seal with furnace cement; adjust barometric regulator to higher setting.
2.
Insufficient make-up air-- the house could be so well insulated that infiltration air
is
not getting
in
to replace air used
in
combustion; open awindow slightly
in
furnace room
or
install avent to the outside
in
furnace area.
B. Problem: Poor heat
throughout
house
while
burning
wood
Solutions:
1.
Poor quality wood--burn only wood which has been air-dried for at least six
months, preferably ayear or more. Use hardwoods such
as
hickory, oak, maple,
etc. for highest heat value per load.
2.
Check to insure that all cold air return vents are open and not blocked with
furniture, etc.
3.
Make sure that all duct joints are airtight, and apply duct tape to seal.
4.
Check flue gas temperature--normal operating range
is
300°-600°F. Lower
temperature would indicate insufficient draft or inadequate combustion air.
5.
Insure that primary furnace blower
is
turning
on
to distribute heat effectively.
Lower "FAN OW setting
on
primary furnace fan control
to
start circulation earlier.
Page
10
of
17 DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
C.
Problem: Paint Discoloration (whitish appearance)
Solution:
Paint is rated for 900°F surfaces, and overheating
of
furnace will cause awhitish
appearance
on
outside
of
combustion chamber surfaces; reduce chimney draft to
control overheating. NOTE: To cover discoloration, obtain ahigh-temperature flat
black spray paint from hardware or fireplace shop.
Ifproblems 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
1:
7-6-11
FIG. 1 - Typical Installation As Supplementary "Add-On" Furnace
6"
Minimum Listed Type HT
Chimney serving DAKA
Furnace Only
Twin 8" round
warm air outlet
pipes
Barometric Regulator
Minimum
12"
Round Cold
Air Return Pipe Connected
To Filter Box Inlet
Fan Control
L4064B [J Primary Furnace
Warm Air Plenum
900Elbows installed
inside plenum
(See FIG. 5
for
alternatives)
Location
of
Fixed
Back Draft Damper to
be installed
on
Primary Furnace
Primary Furnace
+---
(natural gas, electric, oil)
FIG. 2 - Typical Independent Central Furnace Installation
A - STACKHEAD
B - VERTICAL STACK
(2
STORY HOUSE)
C - REGISTER BOOT
0-6"
DIA. OR LARGER HEAT PIPE
E - RECTANGULAR DUCT
F - RECTANGULAR DUCT REDUCER
G - SIDE DUCT STARTING COLLAR
H - END BOOT (RIGHT OR LEFT)
I-DUCT DAMPER
J - 50° SHORT ELBOW
K - BASEMENT HEAT REGISTER
L - UNIVERSAL OR TOP TAKE-OFF
M - DUCT STARTING COLLAR
(RECTANGULAR)
N - COLD AIR RETURN GRILL
0-
COLD AIR PLENUM
P - WARM AIR PLENUM
Q- DUCT END CAP
R - COLD AIR RETURN DUCT
CAUTION:
SEE
DUCT
CLEARANCES
FOR
PROPER INSTALLATION.
CHECK LOCAL CODES.
Page
12
of
17
DAKA
Furnace
Model
622
2008
Edition
Rev
1:
7-6-11
FIG. 3 - Clearances from Horizontal Warm Air Ducts
C
~NTRAL"
FUIlNACf
\./ARM
AIR
~Ll>NUM
1---
ro
'
----lI*f---aY~R
ro'---+
From Sides and Top
of
Warm Air Plenum -
6"
From Horizontal Ducts within 6
Ft.
of
Plenum -6"
From Horizontal Ducts beyond 6Ft.
of
Plenum -
A"
o
,,'"
c:
K'
IN'
~
to
L.
.,/
.-/
/'"
.......
l'
1':"
*
00
Je.
•
FIG. 4 - Clearances to Combustibles
'//////Y/.PVWAt..L//
/'"
/ /
/'"
/"
/
.........
~
.
...
t
{
,.
FIG. 5 - Alternative Warm Air Plenum Pipe Insert Designs
""-EXlS11HG
aECJRIcjrJS/OIL
CEUfItI,l.
HEfiTltlG
FURNACE
Page
13
of
17
DAKA
Furnace
Model
622
2008
Edition
Rev
1:
7-6-11
2008 Edition
Rev
1:
7-6-11
TRANSFORMER
RELAY
(MOUNT
ON
FACE
OF
JUNCTION
BOX)
PINE
an,
MN.
~!506J
m. 320-S29-/37J7
FAX.
320-629-3677
DIAGRAM
1
WIRING
SCHEMATIC
DAKA FURNACE
955
INDUSTRIAL
SlREET
N.E.
~11E
I
RED
L--l.-._-----.JL......J
~
BLla<
~
-FAN
~
III
L1MIT-
\!!
LINE
LINE
.,
~
.--1-------1----1-+-+..,
IN
CONTROL
-
LOAD
LOAD
DAKA Furnace Model 622
~
---------.
r------,
JUNCTION
80X/
~
r~
1i i
RING
GROUND
1 1 L
__
,
SCREW
::
\
1 1
1 I
~
1i
ili
1 "
i1
1
~
Iii
!3!j
::i
120
VAC
15
AMP
SERVICE
UNIT
WIRING
FJELD
WJRING
550
CFM
BLOWER
(BACK)
FIG. 6 - Wiring Schematic
Page 14
of
17
FIG. 6A -Wiring Schematic
.,
WHITE
WIRE
3BLAcKWIRES:
~.1
FROM TRANFORMER
-1FROM
FAN
CONTROL' .
-1FROM
POWE~
SUPPLY
WIRING FRONT
..
DRAFT BLOWER
~~"
~~
,,'
.~2J'
Page 15
of
17 DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
Page 16
of
17
KEY
No. Part Description Part No. Qtv
Fire Door 34200 1
1. with Gasket 57610204 1
2. Junction Box Ring -4x4
(C)
62630601 1
3.
RelayfTransformer (B) 58640002 1
4.
Fan/Limit Control (B) [34064 assv) 58640001 1
5.
Ash Door Assemblv 35100 1
6. Thermal Gasket -Ash Door (A) 57610202 1
7.
Ash
Pan
Assemblv 35400 1
8.
Bvpass Damper Rod &Slide Plate
57590214/0216
1
9.
Draft Blower 50 cfm 63811142 1
10. Cast Iron Grate 59650001 1
11. Grate Spacer (A) 57660001 1
12. Firebrick (box
of
15) 37002 1
13. HinqeAssemblv (A) 30720 1
14. Blower -550 cfm 63610004 2
15. Air Jacket -Top Panel 64590210 1
16. Air Jacket -Bottom Panel 64590208 1
17. Air Jacket -Side Panel -w/o holes /with holes 64590209 /0212 1ea
18. #not used 56811158 1
19. Swing Plate (A) 57590211 1
20. Opera!inq Control Snap Disc -190· open (C) 58640005 1
21. Draft Blower Adapter Plate (B) 57670603 1
22. Wall Thermostat
(8)
58640003 1
Conduit -Short (8")
B)
62630401 1
Conduit -Long (34" (B) 62630405 2
Wire Nut -Large (C 62630801 2
Wire
Nut,
Small
(C)
62630802 7
Sheet Metal Screw -#12 x
%"
(C) SCT#!212 17
Sheet Metal Screw -#12 x2" (C) SCT#122 3
Hex
Bolt,
%x%for ash
pan
(C) HB1434 2
Hex Nut, %for ash
pan
(C) HN14 2
Conduit
Connector-
Straight (C-4), (B-1), (D-2) 62670201 7
Conduit Connector-90·
(C)
62670202 1
Tube Spacer (C) .57670204 3
Twin Blower Bolt Bag
(1
wire set, 2wire nuts,
1-20" conduit, 2straight conduit connectors) 273B 1
Instruction Manual (A) 66700021 1
A. Parts Bag #36315 B. Bolt Bag #36310
C.
Forced DraftAssembly Box #32300
All other components are individual parts.
DAKA Furnace Model 622 2008 Edition
Rev
1:
7-6-11
LIMITED WARRANTY
DAKA Corporation warrants the combustion chambers
of
its supplementary
furnaces to be free
of
defects
in
material
or
workmanship for five years from date
of
sale; all other components, including electronics, gaskets and grates are covered
in
the same manner for aperiod of one year.
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 forwarranty
claims during first year.
In
second and subsequent years, only parts and labor will
be
provided at no charge. DAKA is not responsible for installation
or
dismantling
costs.
Warranty void ifunit is used
in
other than residential service connected to
conventional basement-type
up
flow central heating system, if non-approved fuels
are used
in
firing
of
units, or if unit
is
damaged due to accident, improper
installation or negligence.
For service under this warranty, contact selling dealer or DAKA Corporation,
Customer Service Dept., 955 Industrial St
NE,
Pine City MN 55063; Telephone
(320) 629-6737.
Implied Warranties including that of merchantability are expressly limited
in
duration to the duration ofthis warranty. DAKA Corporation disclaims any
responsibility for consequential damages. Some states do not allow limitations on
how long an implied warranty lasts, or the exclusion
or
limitation
of
incidental
or
consequential damages, so this limitation and exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
This
is
our exclusive written warranty.
Page
17
of
17
DAKA
Furnace
Model
622
2008 Edition
Rev
1:
7-6-11
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