Operating instructions

18
XVII. Correction Factors
Ground Side Flow Rates
GW, Hydronic Side Flow Rates
NOMINAL
HEATING
COOLING
NOMINAL
HEATING
COOLING
GPM
BTU/hr
KW
BTU/hr
KW
GPM
BTU/hr
KW
BTU/hr
KW
60%
0.95
0.98
0.98
1.07
80%
0.99
1.03
0.96
0.99
70%
0.97
0.98
0.98
1.05
90%
1.00
1.01
0.98
1.00
80%
0.98
0.99
0.99
1.03
100%
1.00
1.00
1.00
1.00
90%
0.99
0.99
0.99
1.02
120%
1.00
0.97
1.03
1.01
100%
1.00
1.00
1.00
1.00
140%
1.01
0.96
1.06
1.02
110%
1.01
1.00
1.01
0.99
160%
1.01
0.94
1.08
1.03
120%
1.02
1.01
1.02
0.98
180%
1.01
0.93
1.09
1.04
130%
1.03
1.01
1.02
0.98
200%
1.02
0.93
1.10
1.05
140%
1.04
1.01
1.03
0.97
150%
1.05
1.02
1.03
0.96
Water Coil Pressure Drop Ratings (Pure Water)*
*
Note: dP Pressure Drops apply to standard coils, and cupro-nickel ground water coils have higher pressure drops.
Note: Head Loss = Pressure Drop in PSI x 2.31.
Gnd Loop
Hyd Loop
Flow
GPM
dP
PSIG
Flow
GPM
dP
PSIG
GW 2400
55
4.9
38
3.1
58
5.3
39
3.2
60
5.6
40
3.4
62
5.8
41
3.5
65
6.6
42
3.6
GW 3600
75
5.6
50
2.9
80
6.4
55
3.4
85
6.9
60
3.9
90
7.4
65
4.6
95
8.0
70
5.4
100
8.7
75
6.3
80
7.3
85
8.5
90
9.8
95
11.2