Coleman EB12B Installation Manual
DOWNFLOW/UPFLOW
ELECTRIC FURNACE
MODELS: EB SERIES
Incorrect installation may create condition
where the operation of the product could
cause personal injury or property damage.
The furnace shah be installed so the electri-
cal components are protected from water.
CAUTION]
This product must be installed in strict
compliance with the enclosed installation
instructions and any applicable Local, State
and National Codes including, but not lim-
ited to building, electrical, and mechanical
codes. Improper installation will void the
warranty.
66669 035-15266-003 Rev. A (0804)
035-15266-003Rev.A(0804)
GENERAL INFORMATION
EB FURNACE NOTES
The following list includes important facts and information
regarding the EB furnace and its packaging inclusions:
1. Furnace is rated at 240 volts, 60 Hz, single phase.
2. Heating and Cooling thermostat is packed with furnace.
3. Filters are furnished with each model.
4. Filter size is universal to all models - 16 x 20 x 1.
19-5/8
SUB-BASE, IF USED,
ADDS 7/8" MORE TO
TOTAL HEIGHTAND
3/8" TO WIDTH. N 16-1/2
THERMOSTAT
WIRING
ENTRY
N
FIELD
WIRING
ENTRY
M
WIRING ENTRY
OPTIONAL BOTTOM FIELD
FIGURE 1 : FURNACE DIMENSIONS
5. Furnace size is the same for all models. See Figure 1.
6. Four-wire thermostat operation for heating and cooling.
7. Coil cavity built into furnace.
8. All furnaces are equipped with an air conditioner blower
and is AiC or Heat Pump ready.
9. Holding strap furnished on top rear of furnace.
10. This furnace is designed for downflow application; how-
ever, it may be converted to an upflow application. (See
Page 6 for upflow conversion instruction.)
11. This furnace must not be operated without the front
panel installed.
NOTE: This furnace and its components listed on the A/C
and Heat Pump equipment sticker were listed in
combination as a system by Underwriter's Laborato-
ries for the United States and Canada.
A 1-7/8
B 2-5/8
C 3-1/2
D 1
E 5-1/16
F 5-1/2
G 5-13/16
H 1
J 1-3/4
K 7-13-16
L 8-5/8
M 9-7/16
CODES
The electric furnace must be installed in accordance with the
following codes:
Standard for the Installation of Air Conditioning and Ven-
tilating Systems (NFPA 90A)
Standard for the Installation of Warm Air Heating and Air
Conditioning Systems (NFPA 90B)
National Electric Code (NFPA 70)
Canadian Electrical Code, Part l (CSA C22.1)
All local codes (state/county/township).
NOTE: All applicable codes take precedence over any rec-
ommendation made in these instructions.
LOCATION
Access for servicing is an important factor in the location of
any furnace. Provide a minimum of 24 inches in front of the
furnace for access to the heating elements and controls. This
access may be provided by a closet door or by locating the
furnace 24 inches from a facing wall or partition.
FURNACE CLEARANCE
Electric furnace is approved for zero (0) in. clearance to com-
bustible material on all or any part of the furnace exterior and
the inlet or outlet duct work. Clearances must be provided
above the furnace for a minimum of 200 sq. inches free open-
ing for return air. For clearances other than shown above see
paragraph on Return Air.
RETURN AIR
In order for the furnace to work properly, a closet or alcove
must have a certain total free area opening for return air.
FOR HEATING ONLY FURNACE
Minimum 200 in 2 free area opening.
Use Return Grille 7900-287P/B,
Or any Return Grille with minimum 200 in 2 free area opening.
FOR A/C UP TO 4-TONS AND HP UP TO 3 1/2-TONS
Minimum 250 in 2 free area opening.
Use Return Grille 7900-287P/B, 1FG0620BK (hinged),
Or Louvered Door 3500-1581,3500-5851 (bulk pack),
Or any Return Grille with minimum 250 in 2 free area opening.
FOR A/C UP TO 5-TONS AND HP UP TO 4-TONS
Minimum 330 in 2 free area opening.
Use Return Grille 1RF1025BK, 1FG0125 (hinged),
Or Louvered Door 3500-1591,3500-5861 (bulk pack),
Or any Return Grille with minimum 330 in 2 free area opening.
The return air opening can be located in a closet front door or
a sidewall above the furnace casing, or in a Iouvered door on
the furnace. If opening for the return air is located in the floor,
side walls or closet door anywhere below furnace casing
height, 6 inches minimum clearance must be provided on the
furnace side where return is located to provide for proper air
flow. See Figure 2. The 6 " minimum clearance is not required
if there is a return grille installed above the furnace height.
This return grille cannot start more than three feet above the
furnace height.
2 Unitary Products Group
There must be at least
2 ft. of space available
in front of furnace for
23" MIN.
_ 20" _
24" MIN.
servicing the furnace
when necessary.
A 6 in. clearance is
required if the space
between furnace and
J enclosure is used for
return air,
/
f-
FIGURE 2 : ALCOVE & CLOSET CLEARANCES
For Upflow installations, a closet 32 inches wide by 30 inches
deep with a 30-inch wide door is necessary. See Figure 3.
When installing furnace in a separate closet or room which is
accessible only through an outside door, a minimum of 200
sq. in. free opening for return air must be provided. The sup-
ply and return air must be ducted, securely attached and be
sealed to the furnace casing if there are grilles in the outside
door to the closet. Openings where ducts pass through walls,
the floor or the ceiling must be sealed to prevent air leakage
into or from closet and the living area.
32"
1-5/8" MIN., 2-3/8 MAX. _
30"
RETURN AIR
PASS THROUGH
FRAME WIDTH
30" _1 CLOSET
WIDE DOOR
FIGURE 3 • UPFLOW CLOSET CLEARANCE
Provisions shall be made to permit the return of circulating air
from all rooms and living spaces, except the bathroom(s) to
the circulating air supply inlet of the furnace. Failure to com-
ply may cause improper heating and may cause the furnace
to cycle on the limit.
25-1/2 ....
I
035-15266-003Rev.A(0804)
DUCT SYSTEM DESIGN
Electric furnace is designed to operate at a given static pres-
sure.
In order to assure proper air flow through the furnace, the dis-
tribution system must be designed so that the static pressure
external to the furnace does not exceed the static pressure
rating shown on the furnace rating plate. See Table 3.
The number, size and placement of registers should be such
that even distribution of heat is provided throughout the
home.
DOWNFLOW FURNACE INSTALLATION
(WITH 7900 SERIES DUCT CONNECTOR)
We have redesigned our duct connector to eliminate the sub-
base requirement. Table 1 will help you in deciding the part
number of the new duct connector you need.
If you are installing a new duct connector (7900 Series), refer
to the following instructions. Read carefully the instructions
provided before starting the installation.
Provide adequate clearance for servicing.
1. Locate furnace conveniently away from wall facing or
partitions to permit easy removal of components.
2. A minimum of six (6) inches should be maintained
between the furnace and closet door when door is used
for return air. See Figure 2.
3. Two (2) feet of space must be available in front of fur-
nace for future servicing (blower or element removal, fur-
nace removal, etc.).
Table 1: DUCT CONNECTOR FOR ELECTRIC
FURNACES
FLOOR TO
DUCT DIMENSIONS
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
12"
13"
14"
15"
1"4,-Indicates connector above or below could be used
depending on tolerance in floor to duct dimension.
1"1"-Indicates connector above could be used depending
on tolerance in floor to duct dimension.
4,4,- Indicates connector below could be used depending
on tolerance in floor to duct dimension.
FINGERED
STYLE
7990-6211
7990-6221
14,
7990-6241
14,
7990-626!
7990-6271
7990-628!
14,
7990-6301
14,
7990-6321
1?
NA
NA
SCREW
TAB STYLE
7990-60! 1
7990-6021
14,
7990-6041
14,
7999-6961
7990-6071
7990-6081
14,
7990-6101
14,
7990-6121
1?
NA
NA
Unitary Products Group 3
035-15266-003 Rev. A (0804)
DUCT CONNECTORS (7990 SERIES)
These duct connectors are for connecting the furnace to an under the floor supply duct system.
The furnace may be installed on combustible flooring without a separate sub-base.
DUCT CONNECTORS FOR
SCREW ATTACHMENT
18 42_434
_14_
o
_L
_13
11
o_o
FIGURE 4 : DUCT CONNECTOR DIMENSIONS (7990 SERIES)
REAR WALL CEILING CUT-OUT
OF ENCLOSURE ........ / FOR ROOF JACK
W___ .................. // FLOOR CUT*OUT
"_ ,,': , , , , FOR DUCT
I _/ I CONNECTOR
m _ i / i
& i , ,
| _ _ FURNACE
/_ ( 5 ) JN °UTL'NE
DUCT CONNECTORS FOR
TAB ATTACHMENT
18¼
14_
_DUCT 11
_ DIMENSIONS o
CUTOUT _°
_o °
DUCT CONNECTOR
DEPTH
j_FLOOR
i i i OPT ONAL
"!_ i _ _ ...... ELECTRIC
2_1/8,,, !l I
FUTURE REFRIGERANT
LINE ENTRANCE
[_4- ENTRANCE
lq/8
FLOOR
FIGURE 5 : RECOMMENDED FLOOR CUT-OUT (7990
SERIES)
FIGURE 6 : DUCT CONNECTOR DEPTH
SUPPLY DUCT
(7990 SERIES)
4 Unitary Products Group
035-15266-003Rev.A(0804)
LOCATORBRACKET
NAILS,FLATHEADSCREWS
OR STAPLES
_ SCREWS
!
SUPPLY DUCT
FIGURE 7 • DUCT CONNECTOR SCREW
ATTACHMENT (7990 SERIES)
INSTALLATION OF SCREW ATTACHMENT DUCT
CONNECTOR (7990 SERIES)
1. Make floor cut out as shown in Figure 5.
2. Determine the depth of the floor cavity from the surface
of the floor to the top of the supply air duct and select the
appropriate duct connector from the chart.
3. Place locating bracket (supplied with the duct connector)
to the back edge of the floor opening. See Figure 7.
4. Apply a water based duct sealant to the 1/2" supply duct
attachment flange of the duct connector.
5. Determine which of the four positions the duct connector
best centers over the supply duct and insert it through
the floor cutout.
6. When properly aligned with the supply duct, secure the
duct connector to the floor with nails, fiat head screws or
staples.
7. Use screws as required to secure the duct connector to
the supply duct.
8. Cut out the opening to the supply duct. If sealant was not
used, the installer should tape the mating flanges to pro-
vide a good air seal.
NOTE: Duct sealant and tape must be classified as meeting
HUD Standard 3280.715, U.L. Standard 181A. Tape
used to provide a better air seal should be approved
by the applicable National or Local Code.
LOCATOR BRACKET
OR STAPLES
BENDTABSUNDER
NAILS, FLAT HEAD SCREWS
DUCT OPENING TO
SECURE TO THE
SUPPLY DUCT.
FLOOR
SUPPLY DUCT
FIGURE 8 : DUCT CONNECTOR TAB
ATTACHMENT (7990 SERIES)
INSTALLATION OF TAB ATTACHMENT DUCT
CONNECTOR (7990 SERIES)
1. Make floor cut out as shown in Figure 5.
2. Determine the depth of the floor cavity from the surface
of the floor to the top of the supply air duct and select the
appropriate duct connector from the chart.
3. Place locating bracket (supplied with the duct connector)
to the rear of the floor area for the furnace. See Figure 8.
4. Determine which of the four positions the duct connector
best centers over the supply duct and insert it through
the floor cutout.
5. Mark cut-out location on the supply duct and remove the
duct connector.
6. Cut out the opening to the supply duct.
7. Bend tabs down through and back up under the supply
duct.
8. Secure the duct connector to the floor with nails, flat
head screws or staples.
The duct connector is designed for use on ducts down to 12"
in width. When using the connector on smaller width ducts,
there will not be sufficient clearance to bend the tabs on two
sides of the duct connector.
In such cases the tabs may be attached to the sides of the
duct by using sheet metal screws or other suitable fasteners.
Holes for sheet metal screws are provided in three (3) tabs on
each side of the duct connector. If more than 3 tabs need to
be used to provide a more secure and air tight connection,
the remaining tabs can also be fastened to the duct with
screws after drilling the required screw holes.
Unitary Products Group 5
035-15266-003Rev.A(0804)
PARALLELDUCTSYSTEM
TheEBDuctConnectorInsert37323716001maybeusedon
EBSeriesElectricManufacturedHousingFurnaceswhere
theductsystemrunsparalleltothefurnace.SeeFigure9.
TheEBDuctConnectorInsertshouldnotbeusediftheduct
systemrunsperpendiculartothefurnaceoriftheductsys-
temextendsonlyonedirectionfromthefurnace.
TheDuctConnectorInsertcannotbeusedwith 1" and 2"
Duct Connectors (7990-6011, 7990-6021, 7990-6211, and
7990-6221 ).
Follow Accessory Kit Installation Instruction 035-20632-001
provided with the Duct Connector Insert.
JRNACE DOO
PERPENDICULAR LAYOUT
PARALLEL LAYOUT
FIGURE 9 : DUCT SYSTEM CONFIGURATION
FURNACE CONVERSION TO UPFLOW
APPLICATION
Upfiow furnace conversion is easily accomplished by follow-
ing the steps listed below:
Provide adequate clearance for servicing:
1. Before Conversion, locate the furnace conveniently
away from wall facing or partitions to permit easy
removal and installation of components.
2. Two (2) feet of space must be available in front of fur-
nace for future servicing (blower or element removal, fur-
nace removal, etc.).
3500-5451" Adapter Box and/or 3500-7211" Upflow Flange
Plate Kit are needed prior to following steps below:
1. Assemble the 3500-5451 filter box per installation pro-
vided with kit.
2. Remove furnace panel.
3. Remove air filter.
4. Remove strap on the top of the unit, saving the screw
and strap for later use.
5. Turn entire unit upside-down, so the filter box is on the
floor.
6. Remove two (2) screws that are on the front of the unit at
the top. Obtain front panel hanger angle from the upflow
kit 3500-7211 *. Secure the hanger angle with two (2)
screws removed from the furance casing See Figure 11.
FURNACE SEATED
AGAINST THE
LOCATOR BRACKET
FIGURE 10 : INSTALLATIONOF FURNACE
INSTALLATION OF THE FURNACE
1. Remove the front panels and set the furnace onto the
duct connector. Slide it back until the rear of the unit
engages the Iocator bracket.
2. Secure the front of the furnace with two screws at the
mounting holes provided. See Figure 10.
3. Secure the top of the furnace to a structural member
using screw through the strap at the top of the furnace.
Strap may be moved to any of the holes located along
the top back of the furnace. Installer may provide an
equivalent method, such as screws through the casing
side.
HANGER ANGLE _.
SCREW x 2
FIGURE 11 : HANGER ANGLE ATTACHMENT
7.
Attach the strap that was removed in Step 4 to the top,
side or back of the furnace.
8.
Install the duct flange plate on top of the inverted furnace
as shown in Figure 12.
9.
If installaing POS, Standard or Deluxe Air Systems, pro-
ceed to Step 10.
Optional start collar for the Economy POS system
shipped with 3500-7211" can be used for blend air flex
duct installation. Punch the lineset knockout out and
position the start collar over it. Duct connector edge can
be pushed under the casing flange and screws provided
can be used to capture the other end of duct connector.
Secure collar to top of furnace.
6 Unitary Products Group
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