Rinnai SLIMFIRE 25 User Manual (English)

Questions and Answers:

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Lawrence RomeroAug 2, 2025
Why Rinnai SLIMFIRE 25 burner will not light?
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  xdelgadoAug 2, 2025
  If your Rinnai Indoor Fireplace burner won't light, several factors could be at play. First, ensure the power cord is properly plugged in and switched on. Next, verify that the gas supply is turned on. In case of a power outage, the unit should be re-ignited once power is restored. If there is air in the gas supply pipe, it needs to be purged by a qualified installer. Finally, ignition failure can occur; in this case, try repeating the lighting procedure as described on page 2 of the manual.
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mjohnsonAug 7, 2025
What to do if I smell gas from my Rinnai SLIMFIRE 25?
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  lopezjacobAug 7, 2025
  If you smell gas from your Rinnai Indoor Fireplace, it could indicate a gas leak. Immediately turn off the gas supply at the meter or LPG/Propane cylinder and contact your installer for assistance.
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brooke77Aug 14, 2025
Why is the fan not working on my Rinnai SLIMFIRE 25?
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  kduranAug 14, 2025
  If the fan on your Rinnai Indoor Fireplace isn't working, there are a few things to check. First, make sure the power cord is plugged in and turned on. Also, ensure that the heat switch is activated by allowing the heater to run on ‘high’ for about 5 minutes. Finally, check the power supply.
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Pamela JohnsonAug 19, 2025
Why is there condensation on the glass of my Rinnai SLIMFIRE 25?
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  amanda54Aug 20, 2025
  If you notice condensation on the glass of your Rinnai Indoor Fireplace, it's likely a normal part of operation. Simply allow the heater to warm up, and the condensation should dissipate.
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Austin LeeAug 26, 2025
Why are there small soot deposits on my Rinnai Indoor Fireplace?
- B
  Bryan MaxwellAug 27, 2025
  Small soot deposits can occur during normal operation of your Rinnai Indoor Fireplace. No action is required in this case.

Rinnai SLIMFIRE 25 Specifications

General

Model	SLIMFIRE 25
Fuel Type	Natural Gas or Propane
Heating Area (sq. ft.)	Up to 1, 000 sq. ft.
Weight	80 lbs
Flue Type	Direct Vent
Ignition System	Electronic Ignition
Ignition	Electronic
Type	Indoor Fireplace
BTU Input	25, 000 BTU/h
Efficiency	Up to 85%
Dimensions	29 1/2" x 25 1/2" x 14 3/8"
Venting	Direct Vent
Vent Type	Direct Vent