Unitary products group EB23C Quick start guide

DOWNFLOW/UPFLOW
ELECTRIC FURNACE
MODELS: EB SERIES
294135-BTG-B-1207
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
TECHNICAL
GUIDE
TECHNICAL
GUIDE
DESCRIPTION
The EB Series Electric Furnace is actually two systems in
one. As an air handler, it provides airflow for air conditioning
and heat pump cooling requirements. As an electric furnace,
its range of heating capacities makes the EB a perfect match
for the heating requirements of almost any manufactured
home.
WARRANTY
2- year limited parts warranty.
FEATURES
• Zero clearance feature allows the EB to be installed
where space is a premium.
• Pre-painted white front panels provide a scratch resis-
tant, attractive, easy to clean appliance finish.
• Built-in coil cabinet is design-matched to work in con-
junction with Coleman heat pumps and air conditioners,
providing ease of installation and highly efficient operat-
ing performance.
• Air Conditioner and Heat Pump operation ready, all mod-
els have a multi-speed blower capable of handling cool-
ing and heat pump loads.
• Heating package includes specifically designed, long
lasting nickel/chrome heat elements.
• Universal throw-away filter cleans the air, and is easy to
replace.
• Accessory blower kit available for larger A/C and HP
applications.
• As defined by the U.S. Department of Energy, these fur-
naces are 100% efficient when used in specified applica-
tions.

294135-BTG-B-1207
2Unitary Products Group
* Approved for Single Branch Circuit Service Only.
Casing or Cabinet must be permanently grounded in accordance with N.E.C. or other applicable codes.
51-5/8
19-5/8
Sub-Base, if
Used, Adds 7/8”
More to Total
Height and
3/8” to width.
Thermostat
Wiring
Entry
Field
Wiring
Entry
OPTIONAL BOTTOM FIELD
WIRING ENTRY
A
B
C
D
E
F
H
G
J
K
L
M
N
1-7/8
2-5/8
3-1/2
1
5-1/16
5-1/2
1
5-13/16
1-3/4
7-13-16
8-5/8
9-7/16
16-1/2
J
H
CBAD
EFG
N
M
L
K
ELETRICAL DATA
MODEL NUMBER EB23C EB20C EB17C EB15C EB12C EB10C
D.O.E.
OUTPUT
CAPACITY
24 VAC
60 Hz.
1 PHASE
BTU 77,000 67,000 56,000 51,000 39,000 34,000
KW 22.6 19.6 16.4 15.0 11.4 10.0
OUTPUT
CAPACITY
230 VAC.
60Hz.
1 PHASE
BTU 71,000 61,000 52,000 47,000 36,000 31,000
KW 20.8 17.9 15.2 13.8 10.6 9.1
220 VAC
60Hz.
1 PHASE
BTU 65,000 57,000 48,000 43,000 33,000 29,000
KW 19.1 16.7 14.1 12.6 9.7 8.5
ELEMENT
CAPACITY
@ 240 VAC
KW 21.6 19.2 16.0 14.4 11.2 9.6
AMPS90.080.066.760.046.740.0
MOTOR AMPS @ 240 V 4.0 MAXIMUM
CIRCUIT LOAD
AMPS @ 240 V CKT 1 47.3 44.0 47.3 44.0 50.7* 44.0*
CKT 2 46.7 40.0 23.4 20.0 -- --
FILTER SIZE 16 x 20 x 1
SHIPPINGWEIGHTS 868486858483

294135-BTG-B-1207
Unitary Products Group 3
* Requires Jumper Bars (P/N 3500-378P) - Dual Supply for U.S. Only.
T- Refer to N.E.C. Table 250-95 for non-sheated conductor ground wire.
LOCATION
Access for servicing is an important factor in the location of
any furnace. A minimum of 24 inches should be provided 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. For furnaces installed in upflow
application, there must be 1” clearance from the outlet duct
work for a distance of 3 feet from the supply air opening.
Clearances must be provided above the furnace for a mini-
mum of 200 sq. inches free opening for return air. For clear-
ances other than shown above see paragraph on Return Air.
EB SERIES BLOWER PERFORMANCE
Static Pressure (Inches of WC) .0 .1 .2 .3 .4 .5 .6 .7 .8
Low Speed
Heating Speed
Models EB10, 12, 15 CFM (STD. Air) 945 936 936 924 915 889 870 813 705
Medium Speed
Heating Speed
Models EB17, 20, 23 CFM (STD. Air) 1160 1145 1145 1140 1129 1109 1073 1027 935
Medium High
with A-Coil in place CFM (STD. Air) 1340 1317 1290 1252 1208 1158 1095 1021 876
High
with A-Coil in place CFM (STD. Air) 1573 1534 1490 1435 1369 1309 1237 1135 1019
SUPPLY CIRCUIT WIRE SIZES - 240 VOLT, 60 CYCLE, SINGLE PHASE - FROM N.E.C. TABLE 310-16
MODELS EB23C* EB20C* EB17C* EB15C* EB12C EB10C
Single Branch
Circuit Service
2 Leads +
1 Ground
CKT #1
2 Leads +
1 Ground
CKT #1
2 Leads +
1 Ground
CKT #1
2 Leads +
1 Ground
CKT #1
2 Leads +
1 Ground
CKT #1
2 Leads +
1 Ground
CKT #1
Nominal Circuit Load - AMPS 94.0 84.0 70.7 64.1 50.7 44.0
Minimum Wire Size (90ºC) #2 #3 #4 #4 #6 #8
Minimum Wire Size (75ºC) #1 #2 #3 #4 #6 #6
Minimum Wire Size (60ºC) #0 #1 #2 #3 #4 #6
Ground Wire Size #6 #6 #8 #8 #8 #10
Max. Fuse (or C.B.) - AMPS 125 110 90 90 70 60
Dual Branch
Circuit Service
4 Leads +
2 Ground 4 Leads + 2 Ground 4 Leads + 2 Ground 4 Leads + 2 Ground
NOT
APPROVED
CKT #1 CKT #2 CKT #1 CKT #2 CKT #1 CKT #2 CKT #1 CKT #2
Branch Circuit Load - AMPS 47.3 46.7 44.0 40.0 47.3 23.4 44.0 20.1
Branch Circuit Min. Ampacity 59.2 58.4 55.0 50.0 59.2 29.3 55.0 25.2
Minimum Wire Size (90ºC) #6 #6 #8 #8 #6 #10 #8 #10
Minimum Wire Size (75ºC) #6 #6 #6 #8 #6 #10 #6 #10
Minimum Wire Size (60ºC) #4 #4 #6 #6 #4 #10 #6 #10
Ground Wire Size T#10 #10 #10 #10 #10 #10 #10 #10
Max. Fuse (or C.B.) - AMPS 60 60 60 50 60 30 60 30

Subject to change without notice. Printed in U.S.A. 294135-BTG-B-1207
Copyright © by Unitary Products Group. 2007. All rights reserved. Supersedes: 294135-BTG-A-0607
Unitary P.O. Wichita
Products Box KS
Group 19014 67204-9014
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 in2free area opening.
Use Return Grille 7900-287P/B,
Or any Return Grille with minimum 200 in2free area opening.
FOR A/C AND HP APPLICATIONS (Standard Blower):
Minimum 250 in2free 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 in2free area opening.
FOR A/C AND HP APPLICATIONS (Accessory Blower)
Minimum 330 in2free area opening.
Use Return Grille 1RF1025BK, 1FG0125 (hinged),
Or Louvered Door 3500-1591, 3500-5861 (bulk pack),
Or any Return Grille with minimum 330 in2free area opening.
The return air opening can be located in a closet front door or
a sidewall above the furnace casing, or in a louvered 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.
For Upflow installations, a closet that is 32 inches wide by 30
inches deep with a 30-inch wide door is necessary.
AIR FILTER
The filter supplied with the furnace is of the throw-away type.
Filters need to be cleaned frequently. Shake out all loose dirt,
and use vacuum cleaner to clean additionally. This method of
cleaning will prolong life of filters. DO change filters often
since clean filters not only provide added comfort, better and
cleaner environment, but increase the efficiency of the fur-
nace as well.
FILTER LOCATION: The furnace's front panel must be
removed to gain access to the filter of the downflow furnace.
(See Figure 2.) However, the filter for the upflow furnace* is
located behind the return air grill, adjacent to the furnace
closet or any other location in the return air. For EBL series
furnaces air filters (20 x 20 x 1) are located inside the front
panel.
UL
R
FILTER (IN
DOWNFLOW
ONLY) *
CAVITY
FOR
COIL
THERMOSTAT
WIRES
CIRCUIT
BREAKERS
ELECTRIC
PANEL FIELD WIRING
PROTECTIVE
SHIELD
* Filter in the front panel of EBL series furnace.