GM20-425 - Heating Gasmate - Free user manual and instructions
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| Product Type | Gas Patio Heater |
| Brand | Gasmate |
| Model | GM20-425 |
| Fuel Type | Propane (LPG) |
| Heat Output | 12,000 BTU/hr (approx. 3.5 kW) |
| Ignition System | Piezo electronic ignition |
| Heating Coverage | Up to 200 sq. ft. (approx. 19 m²) |
| Dimensions (Height) | 85 inches (216 cm) |
| Dimensions (Base Diameter) | 24 inches (61 cm) |
| Weight | 28 lbs (12.7 kg) |
| Fuel Consumption | 0.3 kg/h (approx.) |
| Safety Features | Automatic shut-off valve, tip-over switch |
| Emitters | Stainless steel burner mesh |
| Assembly Required | Yes |
| Maintenance | Clean burner and vents regularly; check gas connections |
| Spare Parts | Replacement burner, reflector, gas valve available |
| Reparability | User-serviceable; refer to manual for parts |
| Certification | AGA / IAPMO approved |
| Warranty | 1 year limited |
Frequently Asked Questions - GM20-425 Gasmate
How do I light the Gasmate GM20-425 heater?
Ensure the gas valve is closed. Open the gas supply. Press and turn the control knob to the 'Pilot' setting. Press the piezo igniter button repeatedly until the pilot ignites. Hold for 30 seconds, then turn to desired heat level.
What type of gas does the GM20-425 use?
It uses propane (LPG) only. Do not use natural gas without a conversion kit.
Can I use this heater indoors?
No. This heater is designed for outdoor use only. Using indoors can cause carbon monoxide poisoning.
How do I clean the heater?
Turn off the gas and let it cool. Wipe the exterior with a damp cloth. Use a soft brush to clean the burner mesh and remove any debris or spider webs.
Why does the flame go out after a few minutes?
Check for a blocked pilot or insufficient gas flow. Ensure the tank is not empty and the gas valve is fully open. Also check the tip-over switch is not triggered.
What size gas tank do I need?
A standard 20 lb (9 kg) propane tank is recommended for this heater.
Is the heater safe in windy conditions?
The heater is designed to withstand moderate wind, but strong gusts may cause the flame to go out. The tip-over safety switch will shut off gas if the unit falls.
How do I replace the burner?
Disconnect gas and remove the reflector and cover. Unscrew the burner from the gas valve. Install the new burner and reassemble. Refer to the manual for detailed steps.
Where can I buy spare parts?
Spare parts such as burners, reflectors, and gas valves are available from Gasmate authorized dealers or online retailers.
Does the heater come with a warranty?
Yes, the GM20-425 comes with a 1-year limited warranty covering manufacturing defects. Proof of purchase is required.
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USER MANUAL GM20-425 Gasmate
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Product information
Brand : Gasmate
Model : GM20-425
Category : Heating