Family-owned gas fireplace repair serving Merrimac

Delayed ignition is a service call

A main burner should light smoothly once its valve opens. A noticeable pause before it catches is on Heat & Glo's list of faults to check, and for its Supreme inserts the yearly checklist has the technician confirm the main burner lights within four seconds of the valve opening. That is one maker's figure for its own models.

The causes the manuals point to are physical. Plugged burner ports, embers pushed over the ports or into the pilot area and a burner that has moved out of line with its pilot can all slow the light-off.

That checklist also asks for smooth lighting and carryover to every port, so a late start is judged together with how the flame spreads. On your Merrimac fireplace, the ports, media and burner position are checked and, where the maker gives a figure, the light-off is timed against it before the fix is written into the estimate.

A burner that has shifted out of line

The pilot lights the main burner across a small gap, so the two have to sit where the maker put them. The burner section of one yearly checklist opens by asking the technician to verify that the burner is secured and aligned with the pilot or igniter.

A burner can be disturbed whenever the logs and base pan above it are lifted out for service or cleaning, and it has to go back exactly as it came out. Next on that checklist come smooth lighting, carryover to all ports and no ignition delay, so alignment is confirmed before a slow or patchy start is blamed on another part.

Our technician checks the burner's mounting and its line to the pilot, then watches several starts of the fireplace in your Merrimac home. Where alignment was the cause, correcting it is part of the repair, and missing fixings or a damaged burner are listed on the estimate.

What a yearly gas fireplace service covers

Makers recommend annual service by a qualified service technician, and one direct vent manual asks for the burner system to be inspected annually. The work behind that advice is specific. The owner's manual for one insert line lists the technician tasks, and the groups below follow that list.

Each item is compared with the manual for your model rather than a generic checklist. Air shutter settings, ember placement and pilot flame patterns differ from one fireplace to the next.

A yearly service is not a repair visit. If our technician finds a worn part along the way, it is written on the estimate as a separate repair line, and you decide on it before it is replaced. For homes in Merrimac, the service itself is priced upfront.

• Gasket, glass assembly and seal plate checked
• Logs placed correctly, embers renewed, burner ports cleared
• Lighting, carryover and pilot flame pattern observed
• Orifice, pressures and accessible gas fittings checked

Homeowner tasks and technician tasks

Upkeep is split into two columns in one insert owner's manual. A few tasks are for the homeowner, done seasonally or once a year. The rest, including anything that touches the burner, pilot, gas pressures or the gasket and glass seal, is marked for a qualified service technician. The manual also says installation and repair should be done by a qualified technician only.

The homeowner column is short and practical. None of it involves adjusting the burner or pilot.

The manual adds that owners who are uncomfortable with any of these can call for a service appointment instead. On a maintenance visit in Merrimac, our technician works through the technician column for your model, and the owner column stays with you.

• Checking the barrier front for damage
• Cleaning the glass once it has cooled
• Replacing remote batteries and testing the remote
• Looking over the vent cap for blockage