Omega VSHP SERIES, Product Manual

Page: 42 / 48

OMEGA | OMEGA-VSHP.F-PGD-1904
40 www.omega-heatpump.com
Airflow correction factor table is used to correct the catalog values if the desired CFM is outside of rated CFM. Calculate desired
CFM based on the "% Rated CFM" column. Multiply the catalog results by the value corresponding to the desired % Rated CFM
and the desired output.
Airflow Correction Factors
Airflow COOLING HEATING
% Rated
CFM
Total Cool-
ing Capaci-
ty (BTUh)
Sensible
Cooling
(BTUh)
Watts (W)
THR
(BTUh)
Total
Heating
Capacity
(BTUh)
Watts (W)
THA
(BTUh)
70 0.93 0.82 0.97 0.94 0.94 1.08 0.93
75 0.94 0.85 0.98 0.95 0.95 1.06 0.94
80 0.95 0.88 0.98 0.96 0.96 1.05 0.96
85 0.97 0.91 0.99 0.97 0.97 1.03 0.97
90 0.98 0.94 0.99 0.98 0.98 1.02 0.98
95 0.99 0.97 1.00 0.99 0.99 1.01 0.99
100 1.00 1.00 1.00 1.00 1.00 1.00 1.00
105 1.01 1.03 1.00 1.01 1.01 0.99 1.01
110 1.02 1.06 1.01 1.02 1.02 0.98 1.02
115 1.03 1.09 1.01 1.03 1.02 0.98 1.03
Antifreeze Correction Factors
Glycol Type % Glycol
COOLING HEATING
Total Cooling
Capacity
(BTUh)
Sensible Cool-
ing (BTUh)
Watts (W)
Total Heat-
ing Capacity
(BTUh)
Watts (W)
Ethylene Glycol
(E.G.)
0 1.000 1.000 1.000 1.000
1.000
10 0.996 0.997 1.001 0.990 0.996
20 0.991 0.992 1.004 0.980
0.992
30 0.987 0.985 1.009 0.971
0.988
40 0.982 0.976 1.016 0.961 0.984
50 0.976 0.965 1.025 0.952
0.980
Propelyne Glycol
(P.G.)
0 1.000 1.000 1.000 1.000 1.000
10 0.991 0.991 1.007 0.984 0.993
20 0.983 0.982 1.012 0.968 0.986
30 0.975 0.975 1.017 0.953 0.979
40 0.968 0.968 1.020 0.938 0.972
50 0.961 0.963 1.023 0.923 0.965
Antifreeze correction factor table is used to correct the catalog values if glycol is being utilized. Calculate the required "% Glycol".
Based on desired glycol type. Multiply the catalog results by the value corresponding to the desired glycol type and glycol ratio.