STEP 1:
See the color chart of North America to find the average incoming water temperature in your region.
Choose your inlet ground water temperature:
STEP 2:
Look at the chart for the applications that call for hot water and much water they use per minute or ( GPM) , base on the applications you plan on running at one time your water heater must heat that much water per minute.
Note: Average Hot Water Temp is 105°F-115°F. To get your temperature rise take your desired hot water temp minus the incoming water temp = temp rise. Example: 107°F desired hot water – 57°F inlet = 50°F temperature rise.Choose your application:
- Hand-Sink (.5 gpm and below) Only one hand sink may be used at any given time
- Hand-Sink High Flow (.6 - 1 gpm) A Hand sink can be used in this application one at a time
- 1 Shower Low Flow (1.1 - 1.5 gpm) A low flow shower head one at a time
- 1 Shower (1.6 - 2.0 gpm) A low flow shower head and bathroom sink may be used simultaneously in this application
- 1 Shower & 1 Sink (2.1 - 2.5 gpm) A low flow shower head and a kitchen sink or a dishwasher, or a washing machine may be used simultaneously in this application
- 2 Shower (2.6 - 3.4 gpm) Two low flow showers may be used simultaneously in this application
- 2 showers & 1 sink (3.5 - 4.5 gpm) Two low flow showers head and a kitchen sink or a dishwasher, or a washing machine may be used simultaneously in this application
Standard Deviation:
- Power:
- -1 kW / +1 kW
- TempRise:
- -3°F / +3°F
- Water Flow:
- -0.1 gpm / +0.1 gpm
Recommended PRODUCT:
- Model:
- IR-30
- Power (KW):
- 3.4kW
- Voltage (V):
- 120VAC
- Breaker Sized (A):
- 30 Amp Single Pole
- Recommended Electrical Service:
- 100 Amp
- Wire Size (AWG):
- 10
- Model:
- IR-245
- Power (KW):
- 4.5 kW
- Voltage (V):
- 220VAC
- Breaker Sized (A):
- 20 Amp Double Pole
- Recommended Electrical Service:
- 100 Amp
- Wire Size (AWG):
- 12
- Model:
- IR-260
- Power (KW):
- 6kW
- Voltage (V):
- 220VAC
- Breaker Sized (A):
- 30 Amp Double Pole
- Recommended Electrical Service:
- 100 Amp
- Wire Size (AWG):
- 10 (x2)
- Model:
- IR-288
- Power (KW):
- 8.8kW
- Voltage (V):
- 220VAC
- Breaker Sized (A):
- 40 Amp Double Pole
- Recommended Electrical Service:
- 100 Amp
- Wire Size (AWG):
- 8 (x2)
- Model:
- SIO 14
- Power (KW):
- 14 kW
- Voltage (V):
- 220VAC
- Breaker Sized (A):
- (2 x 30 Amp)
- Recommended Electrical Service:
- 200 Amp
- Wire Sized:
- (#10 (2 Sets)
- Model:
- SIO 18
- Power (KW):
- 18 kW
- Voltage (V):
- 220VAC
- Breaker Sized (A):
- (2 x 40 Amp)
- Recommended Electrical Service:
- 200 Amp
- Wire Sized (AWG):
- (#8 (2 Sets)