Carrier 48MA User Manual
Page 48
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HEATING PERFORMANCE
Table 5 — Electric Heater Performance
UNIT
HEAT TO
TOTAL
STEPS OF HEAT
KW/STEP
SOME
COOL RATIO
HEATER KW
PER MODULE
PER MODULE
016
.75 1
53
2
3 3
&
1 1
70
2
4.4
024
1.5 1
106
3
4.4
028
75 1
66
2
3.3
&
1 1
88
2
4.4
030
1.5 1
132
3
4.4
034
.75 1
79
2
3.3
&
1 1
106
2
4.4
040
1 .5 1
158
3
4.4
Table 6 — Gas Heating Capacities (1000 Btuh)
UNIT
48MA
INPUT
BONNET CAPACITY
Total
Each
Zone
Module
Total
Each Zone Module
Stage 1
Full
016
480
60
360
22.5
45
024
480
60
360
22.5
45
028
600
60
450
22.5
45
030
600
60
450
22 5
45
034
720
60
540
22 5
45
040
720
60
540
22 5
45
NOTES:
1 Ratings are approved for altitudes to 2000 feet At altitudes over
2000 ft, ratings are 4% less for each 1000 ft above sea level.
2. At altitudes up to 2000 ft, the following formula may be used to
calculate air temp rise:
.
bonnet capacity
At = ----------------:--------------
1 09 X air quantity
3. At altitudes above 2000 ft, the following formula may be used:
_______________ bonnet capacity_____________
( 24 X specific weight of air x 60) (air quantity)
4. Maximum allowable gas pressure is 14.0 in wg
Minimum allowable gas pressure for full rated
input is 5 0 in wg
5 Unit design is A G A certified
46