6
AIRFLOW – Liters per second (L/s)
HEAT
OUTPUT
2
0
0
2
5
0
3
0
0
3
5
0
4
0
0
4
5
0
5
0
0
5
5
0
6
0
0
6
5
0
7
0
0
7
5
0
8
0
0
8
5
0
9
0
0
9
5
0
1
0
0
0
1
0
5
0
1
1
0
0
1
1
5
0
1
2
0
0
1
2
5
0
KW
TEMPERATURE RISE
(°C)
3
12.4 9.9 8.3 7.1 6.2
4
16.6 13.3 11.0 9.5 8.3 7.4 6.6
5
20.7 16.6 13.8 11.8 10.4 9.2 8.3 7.5 6.9
6
24.8 19.9 16.6 14.2 12.4 11.0 9.9 9.0 8.3 7.6 7.1
7
29.0 23.2 19.3 16.6 14.5 12.9 11.6 10.5 9.7 8.9 8.3 7.7 7.2
8
33.1 26.5 22.1 18.9 16.6 14.7 13.3 12.0 11.0 10.2 9.5 8.8 8.3 7.8 7.4
9
37.3 29.8 24.8 21.3 18.6 16.6 14.9 13.6 12.4 11.5 10.6 9.9 9.3 8.8 8.3 7.8 7.5
10
41.4 33.1 27.6 23.7 20.7 18.4 16.6 15.1 13.8 12.7 11.8 11.0 10.4 9.7 9.2 8.7 8.3 7.9 7.5
11
45.6 36.4 30.4 26.0 22.8 20.2 18.2 16.6 15.2 14.0 13.0 12.1 11.4 10.7 10.1 9.6 9.1 8.7 8.3 7.9 7.6
12
49.7 39.8 33.1 28.4 24.8 22.1 19.9 18.1 16.6 15.3 14.2 13.3 12.4 11.7 11.0 10.5 9.9 9.5 9.0 8.6 8.3 8.0
13
43.1 35.9 30.8 26.9 23.9 21.5 19.6 17.9 16.6 15.4 14.4 13.5 12.7 12.0 11.3 10.8 10.3 9.8 9.4 9.0 8.6
14
46.4 38.7 33.1 29.0 25.8 23.2 21.1 19.3 17.8 16.6 15.5 14.5 13.6 12.9 12.2 11.6 11.0 10.5 10.1 9.7 9.3
15
49.7 41.4 35.5 31.1 27.6 24.8 22.6 20.7 19.1 17.7 16.6 15.5 14.6 13.8 13.1 12.4 11.8 11.3 10.8 10.4 9.9
16
44.2 37.9 33.1 29.5 26.5 24.1 22.1 20.4 18.9 17.7 16.6 15.6 14.7 14.0 13.3 12.6 12.0 11.5 11.0 10.6
17
46.9 40.2 35.2 31.3 28.2 25.6 23.5 21.7 20.1 18.8 17.6 16.6 15.6 14.8 14.1 13.4 12.8 12.2 11.7 11.3
18
49.7 42.6 37.3 33.1 29.8 27.1 24.8 22.9 21.3 19.9 18.6 17.5 16.6 15.7 14.9 14.2 13.6 13.0 12.4 11.9
19
45.0 39.3 35.0 31.5 28.6 26.2 24.2 22.5 21.0 19.7 18.5 17.5 16.6 15.7 15.0 14.3 13.7 13.1 12.6
20
47.3 41.4 36.8 33.1 30.1 27.6 25.5 23.7 22.1 20.7 19.5 18.4 17.4 16.6 15.8 15.1 14.4 13.8 13.3
IRHANDLER
SUPPLY
RETURN
HEATER
MEASURE
DO NOT MEASURE IN
RADIANT HEAT AREA
FIGURE
DETERMINATION OF HEATING CAPACITY - HEAT
PUMP ONLY
The temperature rise method described above can be used to
determine the heating capacity of the heat pump system in the
heat pump “only” mode. The results obtained using this
method should agree to within 10% of the data published in
the specification sheets for the combination of indoor and
outdoor section.
Note - When using the following procedure to determine the
system’s capacity make sure that the indoor sections backup
heat source is de-energized.
1. Use the same procedure described above to determine
system Airflow and temperature rise across the indoor
section.
2. Referring to Table I, determine the power output of the
system for the measured Temperature Rise and sys-
tem air flow, or by use of the following formula:
Airflow (L/s) x Temperature Rise (°C)
Power (kW) =
828.3
II. REFRIGERANT CHARGE DETERMINATION AND
ADJUSTMENT
To avoid possible injury, explosion or death, practice
safe handling of refrigerants.
WARNING
COOLING CYCLE:
The method to insure that the heat pump/cooling system is
properly charged is by weighing in the amount of refrigerant
specified on the outdoor sections nameplate, with additional
adjustments for line size, line length, and other system compo-
nents.
SYSTEMS WITH MORE THAN 7.6 METERS OF REFRIG-
ERANT LINE REFRIGERANT Allowance
Systems having more than 7.6 m of interconnecting refriger-
ant lines require an additional charge allowance of R22 per
Table II.
(20 pages)
(8 pages)
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