Tank Volume (Liter)
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 (Liter)
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 Liter extracted from the tank until it reaches the tank Min
100
2.5
131
1.67
4.45
110
35
40
31.56
34.21
-13
32.89
35.72
-4
5
34.59
37.71
36.38
39.88
19.4
37.52
41.30
35.6
42.62
47.53
44.6
53.6
43.75
48.95
44.70
50.09
68
44.79
50.18
73.4
44.89
50.37
78.8
44.98
50.46
84.2
45.17
50.75
89.6
44.98
50.56
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
35
110
102.10
96.78
-13
80.11
75.94
-4
64.63
61.26
5
54.00
51.19
19.4
49.39
46.82
35.6
44.6
37.27
35.33
35.57
33.71
53.6
34.42
32.63
68
34.29
32.51
73.4
78.8
34.17
32.39
34.04
32.27
84.2
33.82
32.06
89.6
34.01
32.24
95
Temp.
Entering Domestic Cold Water
7.23
10
45
50
37.23
41.01
39.12
43.28
41.49
46.12
44.23
49.52
45.93
51.69
53.77
61.80
55.57
64.26
56.98
66.15
57.17
66.43
57.36
66.62
57.55
66.91
57.83
67.28
57.55
66.91
Entering Domestic Cold Water
7.23
10
40
45
50
91.46
86.15
71.77
67.60
57.90
54.53
48.38
45.57
44.25
41.68
33.39
31.45
31.86
30.01
30.84
29.05
30.72
28.94
30.61
28.83
30.49
28.72
30.29
28.53
30.46
28.69
°C
/
°F
12.78
15.56
18.34
55
60
65
45.45
51.12
58.40
48.38
54.81
63.13
51.98
59.44
69.55
56.32
65.21
77.40
59.06
68.89
82.78
72.67
88.26
112.36
76.17
93.46
120.87
78.81
97.52
127.86
79.19
98.09
128.71
79.57
98.56
129.56
79.85
99.04
130.50
80.42
99.98
132.11
79.95
99.23
130.69
°C
/
°F
12.78
15.56
55
60
80.83
75.51
63.42
59.25
51.17
47.80
42.75
39.94
39.10
36.53
29.51
27.57
28.16
26.30
27.25
25.46
27.15
25.36
27.05
25.27
26.95
25.17
26.77
25.01
26.92
25.15
21.12
70
68.04
74.66
83.63
95.35
103.67
154.60
171.14
185.41
187.30
189.09
191.08
194.48
191.55
18.34
21.12
65
70
70.19
64.88
55.08
50.91
44.43
41.07
37.13
34.32
33.96
31.39
25.63
23.69
24.45
22.60
23.67
21.88
23.58
21.79
23.49
21.71
23.40
21.63
23.25
21.49
23.38
21.61