L.B. White Tradesman 400 Owner'S Manual And Instructions Download Page 7

1.

Do not attempt to install, repair, or service this heater
or the gas supply line unless you have continuing
expert training and knowledge of gas heaters.  

Qualifications for service and installation of this
equipment are as follows:

a. To be a qualified gas heater service person, you

must have sufficient training and experience to
handle all aspects of gas-fired heater installation,
service and repair.  This includes the task of
installation, troubleshooting, replacement of
defective parts and testing of the heater.  You
must be able to place the heater into a continuing
safe and normal operating condition.  You must
completely familiarize yourself with each model
heater by reading and complying with the safety
instructions, labels, Owner’s Manual, etc., that is
provided with each heater.

b. To be a qualified gas installation person, you must

have sufficient training and experience to handle
all aspects of installing, repairing and altering gas
lines, including selecting and installing the proper
equipment, and selecting proper pipe and tank
size to be used.  This must be done in accordance
with all local, state and national codes as well as
the manufacturer’s requirements.

c.

In the Commonwealth of Massachusetts, this
product must be installed by a gas fitter licensed
by the Commonwealth of Massachusetts.

2.

All installations and applications of L.B. White heaters
must meet all relevant local, state and national
codes.  Included are L.P. gas, natural gas, electrical,
and safety codes.  Your local fuel gas supplier, a local
licensed electrician, the local fire department or
similar government agencies, or your insurance agent
can help you determine code requirements.

Also refer to:

-- ANSI/NFPA 58, latest edition, Standard for

Storage and Handling of Liquefied Petroleum
Gas 

-- ANSI Z223.1/NFPA 54, National Fuel Gas

Code

-- ANSI/NFPA 70, National Electrical Code.

3.

Adequate ventilation air for combustion must be
provided in accordance with OSHA 29 CFR 1926.154,
Temporary Heating Devices, and ANSI A10.10, Safety
Requirements for Temporary and Portable Space
Heating Devices.

4.

We cannot anticipate every use which maybe made 
of our heaters.  Check with the local fire safety
authority if you have questions about applications.

5.

Once the heater has been lit, high sur face and
exhaust temperatures can ignite clothing or burn
users who come too close to the heater. When the
heater is in operation, those working around the
heater should never touch the heater or come within
the clearances stated. Use extreme caution when
lighting the heater or adjusting heat levels.

6.

Forced air heaters shall not be directed toward any
propane gas container within 20 feet (6.10 meters).
Do not wash the heater.  Use only compressed air, a

soft brush or dry cloth to clean the interior of the
heater and it’s components.

7.

Use only the regulator supplied with the heater.  The
heater must be regulated at all times for proper
operation.

8.

For safety, this heater is equipped with an auto reset
backflash switch, and an air proving switch.  Never
operate the heater with any safety device that has
been bypassed.  Do not operate this heater unless
these features are fully functioning.

9.

Do not block air intakes or discharge outlets of the
heater.  Doing so may cause improper combustion or
damage to heater components leading to property
damage.

10

The hose assembly shall be visually inspected on a
daily basis after heater relocation and when the
heater is in use.  If it is evident there is excessive
abrasion or wear, or if the hose is cut, it must be
replaced prior to the heater being put into operation.
The hose assembly shall be protected from building
materials, and contact with hot surfaces during use.
The hose assembly shall be that specified by the
manufacturer.  See parts list.

11.

Check for gas leaks and proper function upon heater
installation, when relocating, and after servicing.
Refer to leak check instructions within installation
section of this manual.

12.

This heater should be inspected for proper operation
by a qualified service person before each use and at
least annually.

13.

Always turn off the gas supply to the heater if the
heater is not going to be used in the heating of the
work space.

14.

T h i s   h e a te r   i s   e qu i p p e d   w i t h   a   t h r e e - p ro n g
(grounding) plug for your protection against shock
hazard and must be plugged directly into a properly
grounded three-prong receptacle.  Failure to use a
properly grounded receptacle can result in electrical
shock, personal injury, or death.

15.

If gas flow is interrupted and flame goes out, do not
relight the heater until you are that all gas that may
have accummulated has cleared away.  In any event,
do not relight the heater for at least 5 minutes.

16.

The heater requires a minimum 500 gallon propane
tank for proper gas supply pressure and operation. A
l a r g e r   t a n k   m ay   b e   r e qu i r e d   d e p e n d i n g   u p o n
temperature conditions at the site.

17.

W h e n   t h e   h e a te r   i s   to   b e   s to r e d   i n d o o r s ,   t h e
c o n n e c t i o n   b e t we e n   t h e   p ro p a n e   g a s   s u p p l y
container and the heater must be disconnected. The
container must be stored in accordance with the
Standard for the Storage and Handling of Liquified
Petroleum Gases, ANSI/NFPA 58.

18.

Propane gas supply containers have left handed
threads.  Always use the appropriate wrench to make
a connection to tighten or loosen the P.O.L. fitting at
the cylinders’ gas supply valve.

6

Summary of Contents for Tradesman 400

Page 1: ...hite com ATTENTION ALL USERS This heater has been tested and evaluated by C S A International in accordance with the requirements of Standard ANSI Z83 7 CSA 2 14 and is listed and approved as a direct...

Page 2: ......

Page 3: ...d to property damage personal injury or loss of life GENERAL HAZARD WARNING Failure to comply with the precautions and instructions provided with this heater can result in Death Serious bodily injury...

Page 4: ...s Owner s Manual includes all options and accessories commonly used on this heater When calling for technical service assistance or for other specific information always have model number configuratio...

Page 5: ...Gas 6 ft 1 83 m SPECIFICATIONS Model Electrical Supply Volts Hz Phase Amp Draw Dimensions Inches L x W x H Minimum Safe Distances From Nearest Combustible Materials STARTING CONTINUOUS OPERATION Fuel...

Page 6: ...nder some circumstances If there is an underground leak the movement of gas through the soil can filter the odorant Propane gas odor may differ in intensity at different levels Since propane gas is he...

Page 7: ...Forced air heaters shall not be directed toward any propane gas container within 20 feet 6 10 meters Do not wash the heater Use only compressed air a soft brush or dry cloth to clean the interior of t...

Page 8: ...nd clear while the main burner ignites to prevent injury caused from hidden leaks that could cause flashback With the main burner in operation check all connections hose connections fittings and joint...

Page 9: ...and defective parts replaced immediately The heater must be retested by properly qualified service personnel before placing the heater back into use PROPANE GAS SUPPLY SIZING The vaporization of prop...

Page 10: ...nsert POL stem into the valve on the tank Thread the nut counterclockwise into the tank valve Tighten the nut securely with a wrench See Fig 4 2 Slowly open the tank valve This will prevent lock up of...

Page 11: ...urer s recommended burner manifold pressure for size orifice used Ensure that the primary air supply to heater is open and free of dust dirt and debris for complete proper combustion If the heater is...

Page 12: ...no cost A nominal charge will be applied for wiring diagrams Maintenance Instructions 1 Before cleaning shut off all gas supply valves and disconnect electrical supply 2 The heater should have dirt or...

Page 13: ...check for gas leaks 9 Clean the heater s orifice with compressed air or a soft dry rag Do not use files drills broaches etc to clean the orifice Doing so may enlarge the hole causing combustion or ign...

Page 14: ...contacts of the switch opening 3 Allow the switch to cool The switch contacts will close Check for electrical continuity across the switch terminals to ensure contacts have closed FIG 10 AUTO RESET B...

Page 15: ...UT BOWED RETAINING CLIP SMALLER HOLE ALIGNED TO IGNITER GAP MAINTENANCE 1 Using a small wire brush reach down the barrel of the heater and brush the igniter electrode Ensure buildup is removed 2 Test...

Page 16: ...rom heater FIG 19 THERMOSTAT IGNITION CONTROL 14 15 1 Disconnect the LED wire harness from the circuit board if applicable 2 Disconnect the ignition cable and remove the nuts securing the control to t...

Page 17: ...and start the heater FIG 22 C Reading Pressures 1 With the heater operating the pressure gauge must read the pressures specified on the dataplate 2 Does the reading at the gas control valve agree wit...

Page 18: ...Lights But Does Not Stay Lit 24 Components should be replaced only after each step has been completed and replacement is suggested in the flow chart Refer to the Servicing sections as necessary to obt...

Page 19: ...voltage supplied to heater power cord Check extension cords and circuit breakers Repair extension cord reset breaker or call qualified electrician No 18 Problem Defective ignition control Does thermos...

Page 20: ...and closed positions Yes If air proving switch is bypassed remove the bypass and retest Replace the switch if necessary One Time Air proving switch contacts are closed before fan motor starts Is air...

Page 21: ...gnition control Defective motor Does ignition control send voltage to air proving switch Is ignition control receiving proper voltage No Is proper voltage supplied to heater power cord Defective ignit...

Page 22: ...ernal board fault If module resets then have qualified electrician check power source for power quality problems Frequency line noise line spikes loose connections too small wire gauge Flame sense rel...

Page 23: ...ed to ignition control Defective thermostat Is voltage supplied to air proving switch from the ignition control Defective Ignition Control Does fan motor start Check for voltage from ignition control...

Page 24: ...rk Is high voltage lead securely connected to ignition control and ignitor Connect high voltage lead Is ignitor properly gapped Check igniter gap Regap to 3 16 in Is ignitor gap positioned toward burn...

Page 25: ...iter if needed No Connect high voltage lead 24 TRADESMAN HEATER Problem Is proper fuel supplied to heater inlet Connect proper gas supply to heater Open all gas shutoff valves No Is proper gas pressur...

Page 26: ...Electrical Connection and Ladder Diagrams 25 TRADESMAN 400 TRADESMAN 400 ULTRA...

Page 27: ...fresh air into the heater and blow it into room for heating Gas Control Solenoid Valve House an electromagnet which is energized by voltage and opens to allow passage of gas to the burner orifice Gas...

Page 28: ...27 PARTS SCHEMATIC Parts Identification...

Page 29: ...ve 572551 14 Manifold tube with fittings 572570 15 Ignition control 571344 16 Ignition cable high voltage 571263 17 Igniter 573196 18 Backflash switch with hardware 572571 19 Combustion chamber with b...

Page 30: ...nths of the date code marked on the part If the defect occurs more than 24 months later than the date code but within 24 months from the date of purchase by the end user a copy of a bill of sale will...

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