General Requirements And Specifications - Broan Nortron 21ECM10 Installation And User Manual

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.
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
684 582 535
323 275 252
1149 1104 1064
542 521 502
1238 1203 1174
584 568 554
- 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
0.5 0.6
481 429
227 202
1016 977
479 461
1139 1106
538 522
RPM
662
903
903
903
903