Brochure

17
PERFORMANCE DATA
Hot Water Conversion Tables
Table 17.2 - Ethylene Glycol Correction Factors ➁
Table 17.2 is used to determine how glycol solutions affect heater capacity. These factors should be applied to the heater capacity at
actual entering water and air temperature conditions.
➁ For Propylene Glycol solution correction factor, multiply Ethylene Glycol correction factor by 0.95.

To find actual unit heater capacity when operated with glycol solution:
Btu
AG
= Btu
S
(or Btu
A
) x Glycol Correction Factor
To select a heater capacity based on standard conditions to meet a heating capacity with a glycol solution:
Btu
S
(or Btu
A
) = Btu
AG
÷ Glycol Correction Factor
Where:
Btu
S
 
Btu
A
 
Btu
AG
= Capacity with glycol solution
Table 17.3 - Hot Water Unit Heater Mounting Height Correction Factors ➂

➂ 

Max. Mounting Height
A
= Max. Mounting Height
S
x Correction Factor
Where:
Max. Mounting Height
A
= Maximum mounting height at actual conditions
Max. Mounting Height
S
= Maximum mounting height at standard conditions
Ethylene Glycol Solution %
Solution Temperature (°F) 20% 30% 40% 50% 60% 70% 80%
60 0.99 0.96 0.93 0.89 0.85 0.81 0.76
100 0.99 0.96 0.93 0.89 0.85 0.81 0.76
150 0.99 0.96 0.94 0.90 0.87 0.83 0.78
200 0.99 0.96 0.94 0.92 0.88 0.85 0.81
250 0.98 0.96 0.94 0.92 0.89 0.86 0.82
300 0.98 0.95 0.95 0.92 0.90 0.87 0.83
350 0.98 0.95 0.95 0.93 0.91 0.88 0.84
400 0.97 0.95 0.95 0.93 0.92 0.89 0.85
Table 17.1 - Minimum Water Flow and Water Volume (gallons) ➀
18 0.25 5 0.13 279 4.50 60 0.97 42 0.50 10 0.15
24 0.25 5 0.13 333 4.50 100 1.24 59 0.75 15 0.23
33 0.40 10 0.41 385 4.50 100 1.24 78 1.00 20 0.31
47 0.40 10 0.41 500 6.00 100 1.66 95 1.25 25 0.38
63 0.50 20 0.66 610 6.00 100 1.98 139 1.00 30 0.43
86 0.50 20 0.66 952 14.00 200 6.50 161 1.25 40 0.54
108 0.50 30 0.98 193 1.50 50 0.65
121 0.50 30 0.98 212 2.00 60 0.86
165 2.00 30 1.35 247 2.00 60 0.86
193 2.00 50 1.45 279 2.25 75 0.97
258 2.50 70 2.20 333 2.25 75 1.24
290 2.50 70 2.20 385 2.25 75 1.24
340 2.50 70 2.50 500 3.00 100 1.66
610 6.00 100 1.98
952 14.00 200 6.50
Type
Model
Min.
GPM
Max.
GPM
Coil Volume
(gals)
Type


HSB/HC


TM
PT/PTN
Model
Min.
GPM
Max.
GPM
Coil Volume
(gals)
Type


V/VN
Model
Min.
GPM
Max.
GPM
Coil Volume
(gals)
Entering Water Correction Entering Water Correction Entering Water Correction
Temperature, °F Factor Temperature, °F Factor Temperature, °F Factor
140 1.33 230 0.91 320 0.74
150 1.25 240 0.89 330 0.72
160 1.19 250 0.86 340 0.71
170 1.13 260 0.84 350 0.70
180 1.08 270 0.82 360 0.69
190 1.04 280 0.80 370 0.67
200 1.00 290 0.78 380 0.66
210 0.97 300 0.77 390 0.65
220 0.94 310 0.75 400 0.64
➀ Water flow and water volume is the same for standard coils and low-outlet temperature coils
1-150.14