Service Manual -
B-VMHxxAV-1
Outdoor Unit
66
Capacity(Btu/h)
18k
Pipe Length (m)
Cooling
7.5
10
20
30
Height difference
H (m)
Indoor Upper
than Outdoor
20
0.941
0.919
10
0.974
0.951
0.928
5
0.995
0.983
0.960
0.937
0
1.000
0.988
0.965
0.942
Outdoor Upper
than Indoor
-5
1.000
0.988
0.965
0.942
-10
0.988
0.965
0.942
-20
0.965
0.942
Heating
7.5
10
20
30
Height difference
H (m)
Indoor Upper
than Outdoor
20
0.987
0.978
10
0.996
0.987
0.978
5
1.000
0.996
0.987
0.978
0
1.000
0.996
0.987
0.978
Outdoor Upper
than Indoor
-5
0.992
0.988
0.979
0.970
-10
0.980
0.971
0.962
-20
0.963
0.955
Capacity
(Btu/h)
24k
Pipe Length (m)
Cooling
7.5
10
20
30
40
50
Height difference
H (m)
Indoor Upper
than Outdoor
25
0.917
0.898
0.879
20
0.946
0.926
0.907
0.887
10
0.975
0.955
0.936
0.916
0.896
5
0.995
0.985
0.965
0.945
0.925
0.905
0
1.000
0.990
0.970
0.950
0.930
0.910
Outdoor Upper
than Indoor
-5
1.000
0.990
0.970
0.950
0.930
0.910
-10
0.990
0.970
0.950
0.930
0.910
-20
0.970
0.950
0.930
0.910
-25
0.950
0.930
0.910
Heating
7.5
10
20
30
40
50
Height
difference
H (m)
Indoor Upper
than Outdoor
25
0.984
0.978
0.972
20
0.991
0.984
0.978
0.972
10
0.997
0.991
0.984
0.978
0.972
5
1.000
0.997
0.991
0.984
0.978
0.972
0
1.000
0.997
0.991
0.984
0.978
0.972
Outdoor Upper
than Indoor
-5
0.992
0.989
0.983
0.977
0.970
0.964
-10
0.981
0.975
0.969
0.963
0.957
-20
0.967
0.961
0.955
0.949
-25
0.953
0.947
0.941
3. Capacity Correction Factor for Height Difference
Summary of Contents for Comfort-Aire Century A-VMH18SV-1
Page 30: ...Service Manual B VMHxxAV 1 ...
Page 37: ...Service Manual B VMHxxAV 1 Outdoor Unit 3 3 Panel Plate X430 Square grille ...
Page 38: ...Service Manual B VMHxxAV 1 Outdoor Unit 4 4 Panel Plate D30 Square grille ...
Page 39: ...Service Manual B VMHxxAV 1 Outdoor Unit 5 5 2 Service Place Minimim 4 Recommended 12 ...
Page 42: ...Service Manual B VMHxxAV 1 Outdoor Unit 8 8 A VMH18SV 1 A VMH24SV 1 ...
Page 45: ...Service Manual B VMHxxAV 1 ...
Page 103: ...Service Manual B VMHxxAV 1 Troubleshooting 15 ...