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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
300
2.5
131
1.67
4.45
110
35
40
94.59
102.44
-13
98.66
107.16
-4
103.57
113.02
5
109.05
119.64
19.4
112.55
123.80
35.6
127.76
142.51
44.6
131.26
146.85
53.6
133.91
150.16
68
134.19
150.54
73.4
134.57
151.01
78.8
134.85
151.39
84.2
135.42
152.15
89.6
134.95
151.48
95
Tank's Temperature Recovery Time in Minutes from various Entering Domestic
Cold-Water Temperatures to Maximum Temperature Set Point (131°F)
300
2.5
1.67
4.45
131
110
35
40
306.28
290.33
-13
240.33
227.81
-4
193.88
183.78
5
162.00
153.56
19.4
148.17
140.45
35.6
111.81
105.99
44.6
106.69
101.13
53.6
103.26
97.88
68
102.87
97.51
73.4
102.49
97.15
78.8
102.10
96.79
84.2
101.44
96.16
89.6
102.01
96.70
95
Temp.
Entering Domestic Cold Water
7.23
10
12.78
45
50
111.70
122.85
136.36
117.37
129.75
144.96
124.46
138.35
155.83
132.49
148.46
168.78
137.59
154.89
177.09
161.12
185.31
218.01
166.70
192.69
228.41
170.95
198.45
236.44
171.52
199.21
237.48
171.99
199.87
238.52
172.56
200.62
239.46
173.50
201.85
241.26
172.65
200.72
239.75
Entering Domestic Cold Water
7.23
10
12.78
45
50
274.38
258.43
242.47
215.29
202.78
190.26
173.69
163.59
153.49
145.13
136.69
128.25
132.73
125.02
117.30
100.17
94.34
88.52
95.57
90.02
84.46
92.51
87.13
81.75
92.16
86.80
81.44
91.81
86.47
81.14
91.47
86.15
80.83
90.87
85.59
80.31
91.38
86.07
80.76
°C
/
°F
15.56
18.34
55
60
65
153.28
175.01
164.24
189.38
178.32
208.47
195.43
232.19
206.67
248.25
264.79
337.08
280.19
362.50
292.48
383.39
294.08
386.03
295.60
388.68
297.11
391.32
299.94
396.14
297.49
391.99
°C
/
°F
15.56
18.34
55
60
65
226.52
210.57
177.74
165.23
143.39
133.29
119.81
111.38
109.58
101.87
82.70
76.87
78.90
73.35
76.37
70.99
76.08
70.73
75.80
70.46
75.51
70.20
75.02
69.74
75.44
70.13
21.12
70
203.93
223.78
250.80
285.96
310.81
463.71
513.23
556.13
561.71
567.28
573.05
583.44
574.47
21.12
70
194.62
152.71
123.20
102.94
94.15
71.05
67.79
65.62
65.37
65.12
64.88
64.46
64.82
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