[qode_accordion][qode_accordion_tab title=”Gas” title_tag=”h3″]
Nu-way Enertech cannot accept any responsibility for any costs incurred of any description, or any damage caused to person, product or property, whilst using the GUIDELINES listed below.
These instructions given below are on the assumption the burner has previously been commissioned successfully.
These guidelines are only for use by suitable qualified, competent persons with appropriate test equipment and industry knowledge.
The basics should be checked first:
- Are the gas cocks of the installation open?
- Are the fuses in order and current switched on?
- Are the controls (room thermostat, boiler thermostat etc.) correctly adjusted?
- Is the gas replay of the burner ready for start and not locked out?
- Is the air supply to the burner sufficient?
[/qode_accordion_tab][qode_accordion_tab title=”Burner fails to start” title_tag=”h3″]
| Cause | Remedy |
|---|
| No gas | Check that all gas cocks are open |
| No voltage | Check fuses, thermostats and electrical connections |
| The burner motor fails to start | The thermal protection has locked out. Motor defective. |
| The gas relay is defective | Replace |
[/qode_accordion_tab][qode_accordion_tab title=”Burner motor is running but no ignition after the pre-purge time has elapsed” title_tag=”h3″]
| Cause | Remedy |
|---|
| No voltage on the terminals | Check the contact. Replace faulty reply. |
| The ignition electrodes in contact with each other or with earth | Adjust |
| The porcelain of the electrodes is broken | Replace the electrodes |
| The connector has a bad contact | Improve the contact |
| The ignition cables are damaged | Replace |
| The ignition transformer is damaged, no voltage on the secondary side | Replace the transformer |
| The ignition cable and the ionisation cable have been transposed | change |
[/qode_accordion_tab][qode_accordion_tab title=”No flame establishment despite a trouble free start” title_tag=”h3″]
| Cause | Remedy |
|---|
| The gas solenoid is defective | Replace |
| The gas solenoid valve does not open despite its obtaining voltage | Replace coil or the whole valve if necessary |
| No voltage to the solenoid valve | Check the contact |
| No electrical connection through the air pressure switch | Test the adjustment and the function of the air pressure switch |
| The starting load is not correctly adjusted | Reduce or increase the gas supply, reduce the quantity of air |
| Gas relay is defective | Replace |
| Air pressure switch incorrectly adjusted or defective | Check the adjustment and readjust |
| No response as the cams of the servomotor are not correctly adjusted or out of position. | |
[/qode_accordion_tab][qode_accordion_tab title=”The burner locks out after the safety time has elapsed in spite of flame establishment” title_tag=”h3″]
| Cause | Remedy |
|---|
| No ionisation current or the UV-cell in wrong position | Adjust the ionisation electrode and the UV cell examine cables and connections |
| The supervision part of the gas relay is defective | Replace the relay |
| Voltage lower than 185V | Contact the electricity authorities |
| The ignition electrodes are disturbing the ionisation current | Adjust the ignition electrodes, repole the ignition transformer if necessary |
| Bad earthing | Arrange for proper earthing |
| Phase and neutral transposed | See wiring diagram and change |
[/qode_accordion_tab][qode_accordion_tab title=”The burner locks out during pre-purge” title_tag=”h3″]
| Cause | Remedy |
|---|
| The air switch is defective or incorrectly adjusted | |
| The starting load is not correctly adjusted | Reduce or increase the gas supply. Reduce the quantity of air. |
| The gas pressure is too low | Increase the pressure. Contact the gas supply company if necessary. |
[/qode_accordion_tab][qode_accordion_tab title=”Condensation in boiler and chimney” title_tag=”h3″]
| Cause | Remedy |
|---|
| The flow gas temperature is too low or the quantity of gas is not sufficient | Increase the flue gas temperature by increasing the gas supply. Insulate the chimney |
[/qode_accordion_tab][qode_accordion_tab title=”Pulsations at start” title_tag=”h3″]
| Cause | Remedy |
|---|
| The ignition electrodes are wrongly adjusted | Re-adjust |
| The gas pressure is too high | Check and adjust by means of a pressure gauge and a pressure adjustment valve |
| The flue gas side is blocked | Check the chimney flue |
[/qode_accordion_tab][qode_accordion_tab title=”Pulsations during operation” title_tag=”h3″]
| Cause | Remedy |
|---|
| The burner is not correctly adjusted | Re-adjust |
| The burner is dirty | Clean the burner |
| Defective chimney | Check and change the dimensions if necessary |
[/qode_accordion_tab][qode_accordion_tab title=”The burner is operating correctly but locking out now and then” title_tag=”h3″]
| Cause | Remedy |
|---|
| The ionisation current is too low | Check. Must be at least 4µA according to the relay manufacturer but should be 8-20µA |
| The UV cell is in a wrong position | Adjust |
| Voltage drop at certain times | Must not drop more than 15% of the rated current |
| Air pressure switch defective or incorrectly adjusted | Contact the electricity authorities if necessary |
| Spark over in ignition electrodes | Replace the electrodes |
| The ambient temperature of the gas relay is too high | Heat insulate, max. 60°C |
| The ignition spark is too weak | Check the transformer |
[/qode_accordion_tab][qode_accordion_tab title=”Bad combustion” title_tag=”h3″]
| Cause | Remedy |
|---|
| Bad draught conditions | Check the chimney |
| The flue gas temperature is too high | The boiler is overloaded. Reduce the quantity of gas |
| The CO² content is too low | Check the boiler with regard to leaks. Choke the draught if it too high. |
[/qode_accordion_tab][qode_accordion_tab title=”The CO² content is too high” title_tag=”h3″]
| Cause | Remedy |
|---|
| Excess air when using natural gas and gasoil (propane and butane) | Choke the air |
| Air shortage | Check the air supply. Check the flue gas damper |
| The holes in the gas nozzle are clogged | Clean |
| The fresh air intake is too small | Check and enlarge |
| The flame is not burning straight because the burner head is out of position | Check the burner head and readjust |
[/qode_accordion_tab][qode_accordion_tab title=”Oil” title_tag=”h3″]
Nu-way Enertech cannot accept any responsibility for any costs incurred of any description, or any damage caused to person, product or property, whilst using the GUIDELINES listed below.The information given below is on the assumption the burner has previously been commissioned successfully. These guidelines are only for use by suitably qualified, competent persons with appropriate test equipment and industry knowledge.
The basics should be checked first:
- Are all the oil valves open?
- Are the fuses in order and the current switched on, polarity correct etc?
- Are the external controls calling?
- Is the air supply and flue clear and sized/positioned correctly?
[/qode_accordion_tab][qode_accordion_tab title=”Burner fails to start. Burner locks out, despite flame establishment” title_tag=”h3″]
| Cause | Remedy |
|---|
| Flame instability – incorrect head settings | – Check nozzle to burner head dimensions and electrode position |
| – Low oil pressures – check oil pressure |
| – Excess air – check and adjust air damper |
| Photo cell not seeing light | – check photo cell is clean and unobstructed |
| Photo cell failed | – Confirm by replacement |
| Control faulty | – confirm by replacement |
[/qode_accordion_tab][qode_accordion_tab title=”Burner locks out with no flame established” title_tag=”h3″]
| Cause | Remedy |
|---|
| False light | Check photo cell is not seeing ambient light |
| Check HT leads, spark electrodes condition and position (not arcing other than at electrode gap) |
| No spark | Check supply to ignition transformer from control box |
| Replace transformer or control box if necessary |
| Check leads, electrodes condition and position |
| No oil | Check oil supply to burner – check pump is no air-locked |
| No oil at nozzle | Check of operation of magnetic valve |
| Photo cell seeing light or giving false signal. |
[/qode_accordion_tab][qode_accordion_tab title=”Burner fails to start after normal operation. Burner locks out – lamp not lit” title_tag=”h3″]
| Cause | Remedy |
|---|
| Fuse blown | Check & replace if necessary. Check reason for failure and resolve before reinstating. |
| Appliance stat has not reset | Adjust thermostat |
| Overheat device has operated | Reset overheat device. Find reason for operation & rectify |
| Control relay or photo cell defective | Check by replacement |
[/qode_accordion_tab][qode_accordion_tab title=”Motor runs – burner runs to lockout” title_tag=”h3″]
| Cause | Remedy |
|---|
| No oil being delivered | Check tank, oil lines, fire valve, pump pressure and nozzle condition |
| Excessive flue draught | Rectify |
| No spark | Check ignition transformer, electrode gap and ceramics |
[/qode_accordion_tab][qode_accordion_tab title=”Delayed ignition, burner starts violently. Burner pulsates on start-up – only with hot flue” title_tag=”h3″]
| Cause | Remedy |
|---|
| Excessive draught | Re-commission burner |
[/qode_accordion_tab][qode_accordion_tab title=”Burner pulsates on start-up” title_tag=”h3″]
| Cause | Remedy |
|---|
| Nozzle partly blocked | Replace nozzle |
| Oil pressure too low | Check and re-commission |
| Flue blocked or damaged | Check and rectify |
| Fan slipping on shaft | Check and retighten |
| Pump coupling loose or worn | Check and replace |
[/qode_accordion_tab][qode_accordion_tab title=”Burner starts violently (delayed ignition)” title_tag=”h3″]
| Cause | Remedy |
|---|
| Poor spark | Check transformer voltage input |
| Replace transformer |
| check electrode adjustment and condition |
| check HT leads for damage and disconnection |
[/qode_accordion_tab][/qode_accordion]
