TCH 250 utilizes a top draft, high efficiency oil fired furnace which heats water/propylene glycol (HTF) and distributes the HTF through the patented multi-zone manifold system thru a series of 600 foot. industrial hydronic hoses in a low pressure closed loop system. Thawzall uses an automatic tempering valve to cover the various temperatures needed for Thaw, Cure and Heat modes. Under no circumstances, will the furnace ever need to be adjusted down as the electronic tempering valve can adjust the temperature delivery needed for the specific applications. Up to 12 inches of frost can be removed in a 24 hour period depending on layout of hose, insulation used, ambient outside temperature and soil conditions.

Specifications
Fuel	#1, #2 Diesel
Fuel Capacity	160 Gal
HTF Capacity	122 Gal
HTF Durability	-80º F
HTF Circulation Pump	1-Closed Loop Centrifugal
Maximum BTU output	280,000
Dimensions (L x W x H)	170 x 84 x 97 in
Weight	5,600 lb
Electrical service required	120 V, 20 Amp
Hose (3,000 Lineal Feet)	5 x 600 ft
Safety Codes	NHTSA, CSA, UL, IBR
Thaw Area	3,000 ft2
With additional hose	6,000 ft2
Concrete curing area	6,000 ft2
With accessories	18,000 ft2
Frost prevention	9,000 ft2
With accessories	27,000 ft2
Heat buildings	400,000 ft3
Operating Pressure	1-5 psi
Fuel Consumption (full load)	1.0 GPH
Run Time	3+ days
Pump Capacity	30 GPM / 1,800 GPH