Recommended heating capacity depending on the volume of water V and the temperature difference Δ
T between the desired water temperature and the lowest ambient temperature:
V
≤ 10 gal
≤ 15 gal
≤ 30 gal
≤ 40 gal
≤ 55 gal
≤ 80 gal
≤ 106 gal
14
40 °F (5 °C)
25 W
50 W
75 W
100 W
150 W
250 W
350 W
∆ T
50 °F (10 °C)
25 W
50 W
100 W
150 W
200 W
300 W
400 W
60 °F (15 °C)
75 W
100 W
200 W
300 W
2 ×200 W
2 ×300 W
2 × 450 W