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Fröling FHG

Fröling FHG
High Efficiency Wood Boiler with
Advanced Lambda Gasification Technology

  • Very efficient and easy to use.
  • Over 80% efficiency.
  • Safe and clean burning with virtual no creosote or visible smoke.
  • Large loading door allows free access to firebox.
  • Easy to clean. External heat exchange cleaning lever dramatically reduces the need for brushing ash.
  • Lambdatronic control system continuously monitors and adjusts combustion through the entire burn process.
  • Unique in industry; fast ignition access door.
  • Built-in smoke hood practically eliminates smoke roll-out.
  • Automatic safety switch reduces operating steps. Load, Light, and Walk Away!.
  • Generous firebox size.
  • Built-in thermal storage controls and monitoring.

Scroll down for additional specifications

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Have Questions?

Give us a call!

b_20_22_16777215_0___images_stories_migrated_phone.png800.782.9927

Overview

The Fröling FHG uses down draft gasification technology to achieve over 80% efficiency. Equipped with a draft induction fan, the boiler starts with ease, even when the flue is cold. The fan and integrated Lambda control continuously adjust combustion parameters so that maximum efficiency and clean burn are maintained throughout the entire burn cycle.

After the fuel load has been burned through, the primary and secondary air dampers are closed and the fan is switched off. This allows for live embers to stay in the firebox for extended periods which reduces the need to re-light the fire after each burn period.

A menu-driven, user interface can be utilized to obtain information about boiler start up, exhaust gas and boiler temps, residual oxygen content, outdoor temperature and more.

The Fröling FHG boiler is covered by a 20-year limited warranty.

Specifications

Description Unit 20 30 40 50
Rated Heat Output Btu/Hr 70,000 102,500 136,560 170,700
Heating Efficiency Range Btu/Hr 35,000
-
70,000
51,250
-
102,500

68,280
-
136,560

85,350
-
170,700
Electrical Connection V/Hz 240/60 240/60 240/60 240/60
ElectricalConsumption W 120 180 180 180
Output Temperature Range ºF 158-194 158-194 158-194 158-194
Boiler Weight Pounds 1150 1150 1345 1345
Fuel Loading Chamber Door inches 13 x 14.50 13 x 14.50 13 x 14.50 13 x 14.50
Fuel Loading Chamber Capacity Cu Ft 5 5 7.4 7.4
Wood Length inches 21 21 21 21
Water Contents Gallons 32 32 50 50
Upstream Resistance Psi 0.042 0.094 0.157 0.245
Minimum Return Feed Temperature ºF 131 131 131 131
Minimum Operating Temperature ºF 203 203 203 203
Maximum Operating Pressure Psi 43.5 43.5 43.5 43.5
Permitted Fuel Firewood Firewood/
Course
wood waste
Firewood/
Course
wood waste
Firewood/
Course
wood waste
Boiler test Pressure Psi 65 65 65 65
Flue Gas Temperature
Rated Load
Partial Load
F
303
203
 
329
212
 
311
214
 
253
223
Minimum Draft Required
Rated Load
Partial Load
Inch WC  
-0.060
-0.028
 
-0.060
-0.040
 
-0.072
-0.040
 
-0.072
-0.040

Documentation

Brochure file size 3.58Mb

Product Datasheet file size 434.67Kb

Plumbing Schematics Document file size 4.16Mb

Emission Chart file size 17.17Kb

Pictures

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4 Britton Lane, P.O. Box 285, Lyme, NH 03768 · Tel 800.782.9927