Tank Volume (Litre)
DHW Flow (GPM)
DHW Tank Temp. (°F)
DHW Temp. Min (°F)
-25
-20
-15
-7
2
7
12
20
23
26
29
32
35
Tank Volume (Litre)
DHW Flow (GPM)
DHW Tank Temp. (°F)
DHW Temp. Min (°F)
-25
-20
-15
-7
2
7
12
20
23
26
29
32
35
Annex "D" - ATW Heat Pumps Performance in DWH Mode
Volume of DHW in Litre extracted from the tank until it reaches the tank Min Temp.
100
2.5
131
1.67
4.45
110
35
-13
45.08
50.56
53.30
61.24
-4
61.05
71.73
5
76.17
93.46
19.4
103.01
137.40
35.6
195.33
371.95
44.6
373.46
4,048.47
53.6
5,882.72
68
73.4
78.8
84.2
89.6
95
Tank's Temperature Recovery Time in Minutes from various Entering Domestic
Cold Water Temperatures to Maximum Temperature Set Point (131°F)
100
2.5
131
1.67
4.45
110
35
40
33.94
32.18
-13
27.33
25.91
-4
24.10
22.84
5
20.74
19.66
19.4
18.09
17.14
35.6
15.44
14.63
44.6
14.32
13.58
53.6
13.33
12.64
68
12.95
12.27
73.4
12.73
12.06
78.8
12.47
11.82
84.2
12.68
12.02
89.6
12.92
12.24
95
Entering Domestic Cold Water
7.23
10
40
45
50
57.65
67.10
72.01
87.22
86.85
110.00
120.87
171.23
206.20
413.44
3,877.43
Entering Domestic Cold Water
7.23
10
45
50
30.41
28.64
24.48
23.06
21.59
20.33
18.58
17.50
16.20
15.26
13.83
13.03
12.83
12.08
11.94
11.25
11.60
10.93
11.40
10.74
11.17
10.52
11.36
10.70
11.57
10.90
°C
/
°F
12.78
15.56
55
60
80.14
99.51
110.66
151.39
150.16
236.34
293.14
1,020.22
°C
/
°F
12.78
15.56
18.34
55
60
65
26.87
25.10
23.34
21.64
20.21
18.79
19.08
17.82
16.57
16.42
15.34
14.26
14.32
13.38
12.44
12.22
11.42
10.61
11.34
10.59
9.85
10.56
9.86
9.17
10.25
9.58
8.90
10.08
9.41
8.75
9.87
9.22
8.57
10.04
9.38
8.72
10.23
9.55
8.88
18.34
21.12
65
70
131.17
192.50
239.46
573.14
555.38
21.12
70
21.57
17.37
15.31
13.18
11.49
9.81
9.10
8.47
8.23
8.09
7.92
8.06
8.21