Operator`s manual
PUREHEAT™ HYDRONIC AIR HEATER OPERATOR’S MANUAL – SECTION 5 
V. 2, Rev. 09/01/06  © 2006 Ground Heaters, Inc.  5-1 
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WARNING
FAILURE TO FOLL OW THESE INSTRUCTIONS 
MAY RESULT IN WHEEL LOSS WHICH CAN 
CAUSE INJURY OR DEATH!
TORQUE WHEEL NUTS TO 90–120 LB-FT 
BEFORE FIRST ROAD USE. RETORQUE TO 
90–120 LB-FT AFTER 10, 25 AND 50 MI LES.
CHECK PERIODIC ALLY TH EREAFTER .
!
Torque the wheel lug nuts 
sequentially as shown. 
Torque to the values listed on the 
Warning decal located on the wheel. 
5-2
WARNING
FAILURE TO FOLLOW THESE INSTRUCTIONS 
MAY RESULT IN WHEEL LOSS WHICH CAN 
CAUSE INJURY OR DEATH!
TORQUE WHEEL NUTS TO 90–120 LB-FT 
BEFORE FIRST ROAD USE. RETORQUE TO 
90–120 LB-FT AFTER 10, 25 AND 50 MILES.
CHECK PERIODICALLY THEREAFTER .
!
TRANSPORTING THE PUREHEAT
TM
 HYDRONIC AIR HEATER   
This section describes the three basic methods of Pureheat
TM
 Hydronic Air Heater transport and 
associated precautions. 
5.1 TOWING
 The Pureheat
TM
 is easily towed by a vehicle rated to tow up to 8,500 lbs (3,855 kg) (HX Package) or 
11,300 lbs (5125 kg) for the fuel tank package. The tow vehicle must be fitted with a Class V or above 
hitch. (Photo 5-1) 
The Pureheat
TM
 has a tongue weight of 895 to 1,446 lbs (405 - 657 kg) depending on configuration.  
Towing vehicle must be equipped with an electric brake system controller. 
NOTE:  A trailer plug wiring decal is located on the inside frame wall across from the trailer junction box.  
(Refer to Appendix A-22 and Appendix A-23) 
5.2 AERIAL LIFTING
The Pureheat
TM
 is equipped with a lifting bail. The lifting bail has multiple holes to provide balance with 
various configurations. 
A
 qualified rigger should set up and perform all rigging. 
5.3  TRANSPORTING on a FLATBED
 The Pureheat
TM
 may be loaded onto a 98 in. (250 cm) or wider flatbed using common-sized loading 
ramps and docks.  The Pureheat
TM
  should  be  chained  down  to  the  flatbed  trailer. 
(Refer to Appendix A-27) 
5.4  COMMON MECHANICAL INSPECTIONS PRIOR TO TRANSPORTING
1.  Trailer lights, brakes, wiring and 
wheel bearing inspection. 
2.  Tires inflated to proper pressure and 
free of defects. 
3.  Plumbing, internal and field hose 
integrity check. 
4.  Lug nuts torque value is as directed 
on wheel decal. (Photo 5-2) 
 !
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