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Connection of a Marathon Water Heater to Heat Pump
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ELEMENT WATTAGE
(@ 240 volts) |
MINIMUM FUSE or BREAKER |
MINIMUM WIRE SIZE |
ELEMENT RESISTANCE (OHMS) |
Recovery Rate
(GPH @90°F) |
50 GALLON RECOVERY RATE |
85 GALLON RECOVERY RATE |
| 4500 |
30 amp |
10 |
12.8 ± 0.6 |
20.5 gph |
2.4 hours |
4.1 hours |
| 3800 |
20/30 amp |
12/10 |
15.2 ± 0.8 |
17.3 gph |
2.9 hours |
4.9 hours |
| 3000 |
20 amp |
12 |
19.2 ± 1.0 |
13.6 gph |
3.7 hours |
6.3 hours |
| Notes: |
(a) |
(b) |
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* Notes:
a) 3800 watt elements may run on 20 amp breakers with 12/2 wire however other factors such as length of wire run, and breaker performance may affect suitability
b) Standard 60°C copper wire (local codes may specify other gauge if fuse or breaker is more than 90 feet from water heater)
c) 3000 watt elements are stocked only in 40, 50 and 85 gallon models only; 3000 watt elements in other models may require a 6-8 week lead time or field replacement
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Specifications