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2. G
R
ENERAL
EQUIREMENTS AND
This unit must be installed in a dry place, in a non-corrosive, well-ventilated environment, without excessive dust. The
ambient temperatue must be over 10°C and under 27°C. If the ambient temperatue is 10°C or less, the plenum must be
insulated on 10 ft linear minimum length.
1. LOCATION - The furnace should be centrally located to the heating area.
2. POSITIONS - It can be installed for vertical, horizontal or downflow operation. When installed horizontally, the furnace should be positioned such as the
door will not end up being on the top. The door should be on the side of the furnace, to ensure that the motor bearings are in their designed position. In
vertical downflow installations, use only "L"- or "T"-shaped plenum with no openings or registers directly below furnace.
3. INSTALLATION CLEARANCES - As shipped from the factory, each unit is approved for "zero inch" clearance. If additional clearance is required, it will be
indicated on the data label attached to the furnace.
4. TEMPERATURE RISE - Furnaces are shipped to operate at 0.20" W.C. (50 Pa) external static pressure. They are certified for operation up to
0.50" W.C. (125 Pa). Check below for temperature rise table on specification chart and, if necessary, adjust the unit to match.
5. SERVICE CLEARANCE - Units are serviced from the FRONT. Leave at least 24" (610 mm) clearance in front of the door.
MODEL NO.
KW
21ECM10
10
21ECM15
15
21ECM18
18
21ECM20
20
21ECM23
22.5
*FACTORY SETTINGS.
SUBJECT TO CHANGE WITHOUT NOTICE.
All manuals and user guides at all-guides.com
S
PECIFICATIONS
240 VOLTS - SINGLE PHASE
BTHU
AMPS INCL. MOTOR HP
34152
43
51228
64
61473
76
68304
84
76842
94
10" x 8" (254 mm x 203 mm) BLOWER
SPEED
FLOW RATE
CFM
LOW**
L/s
CFM
MEDIUM
L/s
CFM
HIGH
L/s
** This speed can only be run with heater off, for cooling/ventilation purposes only.
CAUTION
BLOWER
1/3
1/3
10" x 8"
1/3
(254 mm x 203 mm)
1/3
1/3
STATIC PRESSURE
(INCHES OF WATER COLUMN)
0.2
0.3
0.4
0.5
684
582
535
481
323
275
252
227
1149
1104
1064
1016
542
521
502
479
1238
1203
1174
1139
584
568
554
538
- 4 -
TEMPERATURE RISE @ 0.20" W. C.
°C
°F
*SPEED
22
40
LOW
22
40
MEDIUM
26
47
MEDIUM
29
52
MEDIUM
36
65
MEDIUM
0.6
429
202
977
461
1106
522
RPM
662
903
903
903
903
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