Safety Precautions. LB White L.B. White Therma Grow Greenhouse Heaters HW120 28 Pages
Safety Precautions. LB White L.B. White Therma Grow Greenhouse Heaters HW120
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Safety Precautions
WARNING
Asphyxiation Hazard n
Do not use this heater for heating human living quarters.
n
Refer to the specification section and installation instructions of the heater’s Owner’s Manual, heater n
Do not use in areas without proper air exchange. See air exchange requirements on page 4 or on heater’s dataplate.
n dataplate, or contact the L.B. White Company to determine air exchange requirements of the heater.
Lack of proper air exchange will lead to improper combustion.
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Exhaust fans, supply air inlets, or exhaust fan outlets must not be obstructed.
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Proper air exchange must be provided for either indoor or outdoor mount installations.
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Improper combustion can lead to carbon monoxide poisoning in humans leading to serious injury or death.
Symptoms of carbon monoxide poisoning can include headaches, dizziness and difficulty in breathing.
FUEL GAS ODOR
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Get everyone out of the building and away from the area immediately.
LP gas and natural gas have man-made odorants added specifically for detection of fuel gas leaks.
If a gas leak occurs, you should be able to smell the fuel gas.
THAT’S YOUR SIGNAL TO GO INTO IMMEDIATE ACTION!
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Do not take any action that could ignite the fuel gas.
Do not operate any electrical switches. Do not pull any power supply or extension cords. Do not light matches or any other source of flame. Do not use your telephone.
n n
Natural gas is lighter than air and can collect around rafters or ceilings.
Use your neighbor’s phone and call your fuel gas supplier and your fire department. Do not re-enter the building or area.
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Close all propane gas tank or cylinder fuel supply valves, or the main fuel supply valve located at the meter if you use natural gas.
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Stay out of the building and away from the area until declared safe by the firefighters and your fuel gas supplier.
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Propane gas is heavier than air and may settle in low areas. When you have reason to suspect a propane leak, keep out of all low areas.
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FINALLY, let the fuel gas service person and the firefighters check for escaped gas. Have them air out the building and area before you return. Properly trained service people must repair the leak, check for further leakages, and then relight the appliance for you.
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Some people cannot smell well. Some people cannot smell the odor of the man-made chemical added to propane (LP) or natural gas. You must determine if you can smell the odorant in these fuel gases.
ODOR FADING -- NO ODOR DETECTED
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The odorant in propane gas and natural gas is colorless and the intensity of its odor can fade under some circumstances.
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If there is an underground leak, the movement of gas through the soil can filter the odorant.
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Learn to recognize the odor of propane gas and natural gas. Local propane gas dealers and your local natural gas supplier (utility) will be more than happy to give you a scratch and sniff pamphlet. Use it to become familiar with the fuel gas odor.
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Propane gas odor may differ in intensity at different levels. Since propane gas is heavier than air, there may be more odor at lower levels.
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Smoking can decrease your ability to smell. Being around an odor for a period of time can affect your sensitivity to that particular odor.
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If you have not been properly trained in repair and service of propane gas and natural gas fueled heaters, then do not attempt to light heater, perform service or repairs, or make any adjustments to the heater on propane gas or natural gas fuel system.
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Always be sensitive to the slightest gas odor.
If you continue to detect any gas odor, no matter how small, treat it as a serious leak. Immediately go into action as discussed previously.
ATTENTION -- CRITICAL POINTS TO REMEMBER!
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Propane gas and natural gas have a distinctive odor.
Learn to recognize these odors. (Reference Fuel Gas
Odor and Odor Fading sections above.
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Even if you are not properly trained in the service and repair of the heater, ALWAYS be consciously aware of the odors of propane gas and natural gas.
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A periodic sniff test around the heater or at the heater’s joints; i.e. hose, connections, etc., is a good safety practice under any conditions. If you smell even a small amount of gas, CONTACT YOUR FUEL GAS SUPPLIER
IMMEDIATELY. DO NOT WAIT!
5
6
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.Refer to the following:
- ANSI/NFPA 58, latest edition, Standard for
Storage and Handling of Liquefied Petroleum Gas and/or
- ANSI Z223.1/NFPA 54, National Fuel Gas Code
- ANSI/NFPA 70, National Electrical Code.
3.
Do not move, handle, or service heater while in operation or connected to a power or fuel supply.
4.
This heater may be installed in areas subject to washdown. This heater may only be washed on the external case assembly—see Cleaning Instructions. Do not wash the interior of the heater. Use only compressed air, soft brush or dry cloth to clean the interior of the heater and it’s components. After external washdown, do not operate this heater until it is completely dry. In any event, do not operate the heater for at least one hour after external washdown.
5.
For safety, this heater is equipped with a manual reset high-limit switch and an air proving switch. Never operate this heater with any safety device that has been bypassed. Do not operate this heater unless all of these features are fully functioning.
6.
Do not operate the heater with its door open.
7.
Do not locate fuel gas containers or fuel supply hoses anywhere near the blower outlet of the heater.
8.
Do not block air intakes or discharge outlets of the appliance. Doing so may cause improper combustion or damage to heater components leading to property damage or plant loss.
9.
The hose assembly shall be visually inspected on an annual basis. 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 animals, building materials, and contact with hot surfaces during use.
The hose assembly shall be that specified by the manufacturer. See parts list.
10.
Check for gas leaks and proper function upon heater installation, before building repopulation or when relocating.
11.
This heater should be inspected for proper operation by a qualified service person before building repopulation and at least annually.
12.
Always turn off the gas supply to the heater if the heater is not going to be used.
13.
This heater is equipped with a three-prong (grounding) plug for your protection against shock hazard and must be plugged directly into a properly grounded threeprong receptacle. Failure to use a properly grounded receptacle can result in electrical shock, personal injury, or death.
14.
Direct ignition heaters will make up to three trials for ignition. If ignition is not achieved, the control system will lock out the gas control valve. If gas is smelled after system lock out has occurred, immediately close all fuel supply valves. Do not relight until you are sure that all gas that may have accumulated has cleared away. In any event, do not relight for at least 5 minutes.
15.
In a hanging type installation, rigid pipe or copper tubing coupled directly to the heater may cause gas leaks during movement, and therefore must not be used. Use only gas hose assemblies that are rated and approved for L.P.gas and natural gas in a hanging type of installation.
16.
Installations not using the gas hose supplied with this appliance must connect dimensionally using
American National Standard Wrought Steel and
Wrought Iron Pipe B36/10-1970. (Aluminum piping or tubing shall not be used.) Copper tubing when used for conveying natural gas, shall be internally tinned or equivalently treated to resist sulphur.
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Table of contents
- 3 General Information
- 4 Heater Specifications
- 5 Safety Precautions
- 7 General
- 8 Air Discharge Diverter Duct Installation Instructions
- 9 Indoor VentiIation Requirements
- 9 Air inlet
- 10 Exhaust Fan
- 10 Hanging the Heater
- 11 Sediment Trap Assembly Instructions
- 11 Thermostat Installation Instructions
- 11 Manual Shut-Off Valve, Hose and Regulator Assembly Instructions
- 12 Start-Up Instructions
- 12 Shut-Down Instructions
- 13 Cleaning Instructions
- 13 Maintenance Instructions
- 14 General
- 14 Motor & Fan Assembly
- 15 Air Proving Switch
- 15 Testing the Manual Reset High Limit Switch
- 15 Gas Control Valve
- 16 Gas Pressure Checks
- 17 Igniter and Flame Sensor
- 18 Troubleshooting Instructions
- 24 Electrical Connection and Ladder Diagram
- 25 Heater Component Function
- 27 Parts Identification (Parts List & Schematic)
- 28 Warranty Policy
- 28 Replacement Parts and Service