Operator`s manual
PUREHEAT™ HYDRONIC AIR HEATER OPERATOR’S MANUAL – SECTION 1 
V. 2, Rev. 09/01/06  © 2006 Ground Heaters, Inc.  1- 7 
1.5.1  Burner Setup, Installation and Adjustment Requirements 
  Licensed gas technician required. NG/LP Burner setup and installation, fuel supply connection, test firing and 
Burner adjustment must
 be performed by a licensed professional gas technician and must conform to the 
requirements of all relevant local, state, provincial and federal authorities. The licensed gas technician must
use Two (2) Manometers to properly adjust supply and manifold gas pressure. A Combustion Analyzer and 
Smoke Spot Tester must
 be used to properly adjust Burner emissions and verify that proper combustion 
parameters (O
2
, Exhaust temperature and smoke) have been achieved. The licensed gas technician must 
supply all fuel lines, fittings, regulators, etc. necessary to connect the 
Pureheat NG/LP Burner to the fuel source 
at the correct pressure and volume. 
NOTE: In
 the Commonwealth of Massachusetts, gas piping shall be installed by a licensed plumber or 
gas
 fitter. 
  Diesel Burner setup, installation and adjustment must
 be performed by a trained and knowledgeable 
Diesel Burner technician. The Diesel Burner technician must use a Fuel Pressure Test Gauge to properly 
adjust the fuel pressure. A Combustion Analyzer and a Smoke Spot Tester  must
 be used to properly 
adjust Burner emissions and to verify that proper combustion parameters (O
2
, Exhaust temperature and 
smoke) have been achieved. 
1.5.2 Operators
There are no published standards or certification requirements for operating portable hydronic heating 
machines. The following criteria reflect the experience of Ground Heaters, Inc. and should be considered 
a guide, not a comprehensive requirement. The following operator
 characteristics will prevent accidents, 
facilitate satisfactory results, and ensure reliable service from the Pureheat™ Hydronic Air Heater. 
1.  Patience
: Insures the system runs at optimum levels; leaks are found and fixed; valves are properly 
set; and switches are activated properly. 
2.  Good Hearing, Vision and Smell
: Enables operator to assess equipment and detect potential 
malfunctions. 
3.  Self Respect
: Dresses for the weather; wears eye protection and gloves; and does not take chances 
with personal safety. Do
 not operate the Pureheat while intoxicated or impaired by alcohol or other 
substances
. 
4.  Careful  and  Responsible
: Insures the machine is operating properly before leaving it unattended; 
keeps track of fluid levels; locks compartments; conducts operational checks at regular intervals; and 
ensures proper officials are notified of the machine’s use. 
5.   Above all, a Pureheat™ Air Heater operator reads and understands this Operator’s Manual and the 
decals posted on the machine. 
Failure to adhere to all
 safety precautions and recommendations may result in 
damage to the Pureheat™ Air Heater™, damage to other property, personal injury, or 
possibly death. 
1.5.3  Safe Operation and Maintenance
1.  Read and understand all material in this Operator’s Manual and on the decals posted on the 
Pureheat
™ Air Heater before attempting to operate it. 
2.  Keep unauthorized people, especially children, away from the 
Pureheat. 
3.  Keep guards in place. Do not disable safety features. 
4.  Keep safety and instruction decals clean and legible. Replace damaged decals. 
5.  Do not operate the Burner while the Pureheat
™ Hydronic Air Heater is in an enclosed, non-ventilated 
area. The Burner Exhaust contains carbon monoxide, a colorless, odorless and deadly gas. 
6. Locate the 
Pureheat on firm/level ground and chock wheels before operating. 
7.  Do not smoke while refueling. Do not refuel near open flame or sparks. 
8.  Clean up fuel spills immediately. 
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