5-10
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01
Service Manual - ALPHA
5.5.2 Heating
ENTERING AIR DB ID COIL(
O
c)
15
20
25
ENTERING
WB OD
COIL(
o
C)
TH
Pl
TH
Pl
TH
Pl
-10
1.98 0.94 1.91 1.00 1.83 1.05
-7
2.14 0.96 2.06 1.01 1.98 1.07
-2
2.27 0.97 2.19 1.03 2.12 1.09
2
2.76 1.02 2.65 1.08 2.53 1.15
6
3.89 1.09
3.78 1.17
3.65 1.24
10
4.23 1.15 4.12 1.23 4.01 1.32
15
4.57 1.21 4.46 1.30 4.35 1.38
20
4.82 1.24 4.71 1.35 4.57 1.45
LEGEND
TH –
Total Heating Capacity, kW
PI
– Power Input, kW
WB –
Wet Bulb Temp., (
o
C)
DB –
Dry Bulb Temp., (
o
C)
ID
–
Indoor
OD –
Outdoor
5.6
Capacity Correction Factor Due to Tubing Length
5.6.1 Cooling
TOTAL TUBING LENGTH (One Way)
Model
3m
7.5m
10m
15m
20m
25m
30m
40m
50m
Alpha7,9,12
1.02
1
0.97
0.95
---
---
---
---
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*
Minimum recommended tubing length between indoor and outdoor units is 3m.
5.6.2 Heating
TOTAL TUBING LENGTH(One Way)
Model
3m
7.5m
10m
15m
20m
25m
30m
40m
50m
Alpha7,9,12
1.03
1
0.98
0.96
---
---
---
---
---
*
Minimum recommended tubing length between indoor and outdoor units is 3m.
