How indirect heating helped create a healthy and comfortable indoor climate
Agnieszka Dymarczyk
- 2 min read
Dantherm FH 20-40 – tent heaters
Tent heaters
The heaters are based on the indirect fired (clean air) principle to avoid introducing combustion or fumes into occupied spaces. With their industry-leading warm-up capabilities, the forced air system heaters are essentially self-contained and require no more than an external source electric power and some fuel in the built-in tank. They run on almost all diesel fuels.
Specifically developed to provide heating in tents or other temporary and transportable buildings, FH Warm Air Heaters are suitable for outside installation with supply and return air ducted to the tent or temporary building.
View all of our tent heaters or search for an indirect oil fired, indirect fuel fired or other type of commercial heater to meet your required applications.
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Key features
-
Can operate at temperatures down to -40°C
-
Creates a comfortable working environment
-
Equipment and transportation such as helicopters stay warm and ready for use, reducing wear and tear and ensuring quicker response times
-
Reliable and virtually maintenance free
-
Easy to transport
-
Can be set up by one person without the use of tools, and is easy to operate
-
Developed in close collaboration with the armed forces of NATO countries
-
Ideal for open air operation with ducted supply and return air
-
Adjustable fresh-air intake
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Large built-in fuel tank
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The efficient multi-liquid burner accepts almost all diesel fuels
-
New innovative 2 stage burning principle, which reduces energy consumption, creates a more comfortable room temperature and reduces wear and tear
-
CE-marked
Product variants
-
Bronze = Unit with built-in wheels
-
Silver = Bronze package + lifting pockets
-
Gold = Silver package + stackable frame
Product specifications
Registered NSN number
Yes
-
Operating temperature range
-40 – +30
°C
Heat output – stage 1/2
21/27
kW
Air flow
1,815
m3/h
Sound level (measured with mounted hoses) @ 1.5m
74
dB(A)
Protection class
IP44
Max. fuel consumption
1.6/2.1
l/h
Power supply
230/1ph/50
V/Hz
Rated current
3.8
A
Air discharge increasing temperature
37/49
°C
Flex duct connection
350
Ømm
Tank capacity
65
l
Product size (h x l x w)
1458 x 614 x 966
mm
Weight - Bronze variant
95
kg
Product specifications (US)
-
Select model:
- FH 20 (US)
- FH 40 (US)
Registered NSN number
Yes
Operating range
-40 to +86
°F
Heat output – step 1/step 2
71,650 / 92,000
BTU
Efficiency
88
%
Air flow
1.068
SCFM
Fresh air volume
0-218
SCFM
Fuel consumption
3.5/4.6
lbs/h
Autonomy
31
h
Rated current
3.8
A
Power supply
120/1ph/60
V/Hz
Duct connection (1x)
13.8
in
Ducting recirculation (1x)
13.8
in
Operation above sea level
9,842
ft
Tank capacity
17
gal
IP-grade electrical parts
3S
NEMA
Sound level
74
dB(A)
CE & Safety
CE + UL compliant
Height withh chimney installed
86.6
in
Product size (h x l x w) - Bronze variant
57 x 24 x 38
in
Weight - Bronze variant
209
lbs
Weight - Silver variant
240
lbs
Weight - Gold variant
254
lbs
Accessories and consumables
Product code: 4035.555
Accessory for FH 20-40
Product code: 4515.372
Accessory for FH 40
Product code: 4515.371
Accessory for FH 20
Product code: 025432
Accessory for VA-M15MKII, VA-M40MKII, FH 20-40
Useful downloads
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Indirect oil fired air heaters with 2 stage Master burner
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Featured insights
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