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How to calibrate your hot water using water valve
1. Make sure all electrical wires and water pipes are properly installed. Check the power
requirement for each model. Before start up, check that all connections are secure and
fittings are tight. Confirm that all air has been purged from the system.
2. With the water running, use the lower heating mode button to turn on the unit and turn
to maximum mode (or set temp). The water begins to heat and the current temperature is
shown in the display. Dial the Gate Valve on the Hot Side Only to calibrate your hot water
vs the flow rate. Ideally, you will gain a higher flow rate by lowering the set temp as water
moves through the water heaters quartz elements faster. If hotter water is required, simply
raise the set temp and slow the water flow rate to meet your temperature needs.
3. Calibrate using Gate Valve (water valve) at hot outlet and choose a desirable
temperature by pressing the mode buttons and adjusting the gate valve until you have a
comfortable water temperature and flow rate. Never use the cold inlet valve to adjust flow.
This will restrict water from flowing in and cause damage to the heating elements.
4. Turn off water and unit is set.
SIZING GUIDE
MODEL
NUMBER
MAX
KW
35 F
45 F
55 F
65 F
75 F
IR-30
3.4
-
0.50
0.60
0.70
0.90
IR-234
3.4
-
0.50
0.60
0.70
0.90
IR-245
4.5
-
0.60
0.70
0.90
1.20
IR-260
6.0
0.50
0.80
1.00
1.20
1.50
IR-288
8.8
1.00
1.30
1.50
1.70
2.30
IR-14K220
14.0
1.50
2.00
2.30
2.60
3.30
IR-18K220
18.0
2.00
2.50
3.00
3.40
4.30
GALLONS PER MIN OUTPUT BASED ON WATER TEMP.