Hubbell 280-3 - Key Model Specifications

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Model 280-3
Our most powerful residential electric tankless water
heater. This 27 kW water heater is configured for
cold climates where the incoming water temperature
can drop below 45° F. The Model 280-3 is well suited
for homes in the northern U.S. and Canada, and those
in the southern U.S. that have large Roman-style or
Jacuzzi tubs and that have generally more demanding
water usage needs.
Technical Specifications:
Dimensions:
17” x 16.2” x 3.6”
Customer Double-Pole
Circuit Breaker / Fused
Disconnect Required:
1 x 125A or
2 x 60A or
3 x 40A
Weight:
20 lbs.
kW / Elements:
27 kW / 3 elements
Max. Amps:
112.5 A @ 240 V
Model 240-3
The 24 kW water heater is configured for climates
where incoming water temperatures are in the 50° -
70° F range. The Model 240-3 is suitable as a whole
house water heater.
Technical Specifications:
Dimensions:
17” x 16.2” x 3.6”
Customer Double-Pole
Circuit Breaker / Fused
Disconnect Required:
1 x 110A or
2 x 60A or
3 x 40A
Weight:
20 lbs.
kW / Elements:
24 kW / 3 elements
Max. Amps:
100 A @ 240 V
Model 220-3
The 21 kW, water heater is configured for cold
climates where the incoming water temperature can
drop below 55° F. The Model 220-3 is well suited
for homes in the northern U.S. and Canada, and
those in the southern U.S. that have large Roman-
style or Jacuzzi tubs and that have generally more
demanding water usage needs.
Technical Specifications:
Dimensions:
17” x 16.2” x 3.6”
Max. Amps:
87.5 A @ 240 V
Weight:
20 lbs.
Customer Double-Pole
Circuit Breaker Required:
1 x 100A or
2 x 50A
kW / Elements:
21 kW / 3 elements
100 105 110 115 120 125
40 3.1 2.8 2.6 2.5 2.3 2.2
45 3.4 3.1 2.8 2.6 2.5 2.3
50 3.7 3.4 3.1 2.8 2.6 2.5
55 4.1 3.7 3.4 3.1 2.8 2.6
60 4.6 4.1 3.7 3.4 3.1 2.8
65 5.3 4.6 4.1 3.7 3.4 3.1
70 6.2 5.3 4.6 4.1 3.7 3.4
75 7.4 6.2 5.3 4.6 4.1 3.7
Outlet Temp. (°F)
Maximum Flow Rate (GPM)
Inlet
Temp.
(°F)
100 105 110 115 120 125
40 2.7 2.5 2.3 2.2 2.1 1.9
45 3 2.7 2.5 2.3 2.2 2.1
50 3.3 3 2.7 2.5 2.3 2.2
55 3.6 3.3 3 2.7 2.5 2.3
60 4.1 3.6 3.3 3 2.7 2.5
65 4.7 4.1 3.6 3.3 3 2.7
70 5.5 4.7 4.1 3.6 3.3 3
75 6.6 5.5 4.7 4.1 3.6 3.3
Outlet Temp. (°F)
Maximum Flow Rate (GPM)
Inlet
Temp.
(°F)
100 105 110 115 120 125
40 2.5 2.3 2.1 2 1.9 1.8
45 2.7 2.5 2.3 2.1 2 1.9
50 3 2.7 2.5 2.3 2.1 2
55 3.3 3 2.7 2.5 2.3 2.1
60 3.8 3.3 3 2.7 2.5 2.3
65 4.3 3.8 3.3 3 2.7 2.5
70 5 4.3 3.8 3.3 3 2.7
75 6 5 4.3 3.8 3.3 3
Outlet Temp. (°F)
Maximum Flow Rate (GPM)
Inlet
Temp.
(°F)