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General| Category | Tankless Water Heater |
|---|---|
| Minimum BTU Input | 15, 000 BTU/hr |
| Minimum Flow Rate | 0.4 GPM |
| Fuel Type | Natural Gas or Propane |
| Heat Exchanger | Copper |
| Electrical Requirements | 120V AC |
| Ignition Type | Electronic Ignition |
| Warranty | 12 years heat exchanger, 5 years parts, 1 year labor |
Step-by-step guide to adjust gas pressure for HD50i and HD70E models.
Step-by-step guide to adjust gas pressure for HD55 Series models.
Setting switch No. 8 of SW1 to 'ON' for low combustion calibration.
Activating PCB switch A for calibration.
Calibrating forced low combustion using PCB switches A and B.
Resetting SW1 switch No. 8 for high combustion calibration.
Activating PCB switch B for calibration.
Calibrating forced high combustion using PCB switches A and B.
Setting SW1 switch No. 8 to 'OFF' for normal combustion.
Checking dip switch No. 1 of SW2 for correct gas type.
Attaching the pressure gauge to the burner test point.
Step-by-step guide to adjust gas pressure for HDC1200/1500 models.
Setting the unit to 'Forced Low' combustion using SW1 dipswitch.
Measuring operating pressure at the burner test point in low combustion.
Adjusting the gas pressure using the regulator screw.
Setting the unit to 'Forced High' combustion using SW1 dipswitches.
Measuring operating pressure at the burner test point in high combustion.
Adjusting the high pressure potentiometer for precise settings.
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