909528_Thermo Pro 50 Data Sheet

Engine-off Coolant Heater for Specialty Vehicles & Equipment Thermo Pro 50

Thermo Pro 50 Engine-Off Coolant Heater for Specialty Vehicles and Equipment

Be Ready For Work The Thermo Pro 50 has been specially designed for use in specialty commercial vehicles and off-highway equipment. Its compact dimensions and lightweight design allow for installation in vehicles with limited space. The heater pre-warms the engine eliminating cold starts, reducing harmful emissions, and increasing engine life. The heater’s innovative features and compact size offer multiple installation options and significant fuel savings.

Coolant Heater Features: n Auxiliary heating with up to 17,000 BTU/h of heating power n The lightest heater in its class n Tested to -50° F (-46° C) n Compact size allows installation in a wide range of vehicles and equipment n High product quality with long service life n Low emissions due to efficient design n Automatic high altitude adjustment up to 11,000 feet (3,350 m) n Coolant inlet & outlet ports can be rotated 180° n Remote mounted coolant pump

Technical Specifications

Technical specifications for circulating pump U4847 Coolant Flow

Thermo Pro 50

Heating Capacity

8,500 – 17,000 BTU/h (2.5 – 5.0 kW)

1.98 gal/min (7.5 l/min)

Fuel Consumption

0.08 – 0.17 gal/h (0.3 – 0.65 l/h)

Power Consumption

.75 A (18 W)

Fuels (Suitability for special fuels)

JP8, Diesel 1, Diesel 2, Arctic

Dimensions (L, ø )

4.3 L, ø 1.9 in (109 L, ø 48.5 mm)

Rated Voltage

24 V


0.7 lbs (0.3 kg)

Power Consumption

1.2 – 2.0 A (28 – 46 W)

Dimensions (L x W x H)

8.6 x 3.6 x 5.8 in (218 x 91 x 147 mm)


4.8 lbs (2.2 kg)

Available Thermo Top Pro 50 Heater Kits: Thermo Pro 50 Diesel Kit with SmarTemp Control 3.0 Bluetooth (24 V) - P/N: 5013915 Thermo Pro 50 Standard Kit (24 V) - P/N: 5010666 Thermo Pro 50 Heavy Duty/Off Highway Kit (24 V) - P/N: 5010870 Thermo Pro 50 Diesel Heavy Duty/Off Highway Heater Kit with Enclosure Box (24 V) - P/N: 5011083

Upgrade to the new SmarTemp Control 3.0 with adapter harness - Part number 5013932

Optional Accessories:

SmarTemp Control 3.0: Part Number 5013873 n Same unit controls air or coolant heater n Programmable run times (Timers) n Adjustable Low Voltage Disconnect (LVD) n Preventive maintenance reminder n Heater fault codes displayed SmarTemp Control 3.0 Bluetooth: Part Number 5013874 n Same features as SmarTemp 3.0 n Bluetooth connection to SmarTemp 3.0 App - View diagnostic information - Manage & control heater function - Link to techwebasto.com - Program multiple units

Webasto Thermo & Comfort North America, Inc. 15083 North Road Fenton, Michigan 48430 USA Toll Free: 800-860-7866 Phone: 810-593-6000 webasto-comfort.com

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