Desa BNG150T User Manual

NATURAL GAS
CONSTRUCTION
HEATERS
OWNER’S MANUAL
150 LP SIDE PV 017
Model BNG150T
150,000 Btu/Hr
With Built-in Thermostat
GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE, EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE POISONING, AND/OR ELECTRICAL SHOCK.
ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USE OR SERVICE THIS HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.
150,000 BTU/HR NATURAL GAS CONSTRUCTION HEATER
SAFETY INFORMATION
WARNINGS
WARNING: FIRE, BURN, IN­HALATION, AND EXPLOSION HAZARD. KEEP SOLID COMBUS­TIBLES, SUCH AS BUILDING MA­TERIALS, PAPER OR CARD­BOARD, A SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE IN­STRUCTIONS. NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES, OR PRODUCTS SUCH AS GASO­LINE, SOLVENTS, PAINT THIN­NER, DUST PARTICLES OR UN­KNOWN CHEMICALS.
WARNING: Not for home or recreational vehicle use.
The heater is designed for use as a construc­tion heater. Certain standards govern the use of fuel gases and heating products for specific uses. Your local authority can ad­vise you about these. The primary purpose of construction heaters is to provide tempo­rary heating of buildings under construc­tion, alteration or repair. Properly used, the heater provides safe economical heating. Products of combustion are vented into the area being heated.
We cannot foresee every use which may be made of our heaters. Check with your local
fire safety authority if you have questions about heater use.
Carbon Monoxide Poisoning: Some people are more affected by carbon monox­ide than others. Early signs of carbon mon­oxide poisoning resemble the flu, with head­aches, dizziness, and/or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Check for proper ventilation and have heater serviced.
Natural Gas: Natural gas has a distinctive odor. This odor helps you detect a natural gas leak. However, the odor may fade. Natural gas may be present even though no odor exists.
Make certain you read and understand all Warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.
Install and use heater with care. Follow all local ordinances and codes. In the ab­sence of local ordinances and codes, re­fer to the National Fuel Gas Code Hand-
book, NFPA54/ANSI Z223.1 and the Natural Gas Installation Code, CAN/ CGA B149.1. This instructs on the safe
storage and handling of flammable gases.
Use only the electrical voltage and fre­quency specified on model plate. The electrical connections and grounding of the heater shall follow the National
Electric Code, ANSI/NFPA 70 or the Canadian Electrical Code, Part 1.
Electrical grounding instructions — This appliance is equipped with a three­prong (grounding) plug for your pro­tection against shock hazard and should be plugged directly into a properly grounded three-prong receptacle or extension cord.
Use only with natural gas. Do not at­tempt to use with propane/LP gas.
Provide adequate ventilation. Before using heater, provide at least a three­square-foot opening of fresh, outside air for each 100,000 Btu/Hr of rating.
This heater produces carbon monoxide, which is listed by the State of Califor­nia as a reproductive toxin under Propo­sition 65.
For indoor use only. Do not use heater outdoors.
Keep heater away from strong drafts, wind, water spray , rain, or dripping water .
Do not use heater in occupied dwell­ings or in living or sleeping quarters.
Do not use heater in a basement or be­low ground level.
Keep appliance area clear and free from combustible materials, gasoline, paint thinner, and other flammable vapors and liquids. Dust is combustible. Do not use heater in areas with high dust content.
Minimum heater clearances from com­bustible materials: Outlet: 8 Ft. Sides: 2 Ft. Top: 6 Ft. Rear: 2 Ft.
Check heater for damage before each use. Do not use a damaged heater.
Check hose (if used) before each use of heater. If highly worn or cut, replace with hose specified by manufacturer before using heater.
Do not alter heater. Keep heater in its original state.
Do not use heater if altered.
Locate heater on stable and level sur­face if heater is hot or operating.
Never block air inlet (rear) or air outlet (front) of heater.
Do not leave heater unattended.
Keep children and animals away from heater.
This heater is equipped with a thermo­stat. Heater may start at anytime.
Never move, handle, or service a hot or operating heater. Severe burns may result. You must wait 15 minutes after turning heater off.
To prevent injury, wear gloves when handling heater.
Never attach duct work to heater.
Turn off natural gas supply to heater and unplug heater when not in use.
Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Improper replacement parts could cause serious or fatal injuries.
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OWNER’S MANUAL
PRODUCT IDENTIFICATION
Hot Air Outlet (Front)
Upper Shell
Lower Shell
Handle
UNPACKING
1. Remove all packing items applied to heater for shipment. Keep plastic cover cap (attached to inlet connector) for storage.
2. Remove all items from carton.
3. Check all items for shipping damage. If heater is damaged, promptly inform dealer where you bought heater.
4. Hose not included. User must supply hose or flexible connector.
Fan Guard
Power Cord
On/Off Switch
Figure 1 - 150,000 Btu/Hr Model
Thermostat Knob
Inlet Connector
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3
150,000 BTU/HR NATURAL GAS CONSTRUCTION HEATER
THEORY OF OPERATION
The Fuel System: The gas supply at­taches to the heater by a minimum 3/4 inch i.d. hose or flexible connector. User must supply hose or flexible connector. The length should be no more than 10 feet long. The natural gas moves through the solenoid valve and the internal regulator and out the nozzle.
The Air System: The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.
Combustion Chamber
Clean Heated Air Out (Front)
Nozzle
Air For Combustion And Heating
The Ignition System: The direct spark ignitor (DSI) sends voltage to the ignitor. The ignitor ignites the fuel and air mixture.
The Safety Control System: This sys­tem causes the heater to shut down if the flame goes out.
Ignitor
DSI
Fan
Motor
Internal Regulator
On/Off Switch
Solenoid Valve
Fuel
Cool Air In (Back)
Power Cord
NATURAL GAS SUPPLY
The user must furnish the natural gas sup­ply and the connections to the heater.
Regulate the natural gas supply down from a minimum 5 inches water column to a maximum of 1/2 psi. The natural gas supply capacity should be able to supply a mini­mum of 150 cubic feet of gas at pressure for each heater connected to the system.
Consult your natural gas supplier for proper sizing of the natural gas supply lines.
Follow all local ordinances and codes. In the absence of local ordinances and codes, refer to the National Fuel Gas Code Hand-
book, NFPA54/ANSI Z223.1 and the Natu- ral gas Installation Code, CAN/CGA B149.1.
VENTILATION
WARNING: Follow the mini­mum fresh, outside air ventila­tion requirements. If proper fresh, outside air ventilation is not pro­vided, carbon monoxide poison­ing can occur. Provide proper fresh, outside air ventilation be­fore running heater.
Provide a fresh air opening of at least three square feet for each 100,000 Btu/Hr rating. Provide extra fresh air if more heaters are being used.
Figure 2 - Cross Section Operational View
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103887
OWNER’S MANUAL
INSTALLA TION
WARNING: Review and un-
derstand the warnings in the
Safety Information
2. They are needed to safely op­erate this heater. Follow all local codes when using this heater.
WARNING: Test all gas pip­ing and connections for leaks after installing or servicing. Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.
1. Provide natural gas supply system.
2. Install plumbing to a low pressure natu­ral gas source. The source must be regu­lated to a maximum1/2 psi. The plumb­ing must be a minimum 3/4 inch i.d. hose or flexible connector not over 10 feet long.
3. Connect the hose to the heater at the 1/2 inch SAE flare fitting at the inlet.
4. Open natural gas supply valve slowly.
5. Check all connections for leaks.
6. Close natural gas supply valve.
Figure 3 - Hose and Inlet Connector
section, page
Inlet Connector
Hose (not included)
OPERATION
WARNING: Review and un-
derstand the warnings in the
Safety Information
2. They are needed to safely op­erate this heater. Follow all local codes when using this heater.
TO START HEATER
1. Follow all installation, ventilation and safety information.
2. Locate heater on stable and level sur­face. Make sure strong drafts do not blow into front or rear of heater.
3. Plug power cord of heater into a three­prong, grounded extension cord. Exten­sion cord must be at least six feet long. Extension cord must be UL listed.
Extension Cord Size Requirement
Up to 50 feet long, use 18 A WG rated cord. 51 to 100 feet long, use 16 AWG
rated cord.
101 to 200 feet long, use 14 AWG rated cord.
4. Plug extension cord into a 120 volt/60 hertz, three-hole, grounded outlet.
5. Open natural gas supply valve slowly.
6. Turn on/of f switch to the ON position. Adjust thermostat to desired setting. If heater does not start, thermostat setting may be too low. Turn thermostat knob to higher position to start heater.
Note:
If heater does not start, turn on/ off switch to the OFF position. W ait ten seconds for safety control to reset, then try again.
Note:
If the heater still does not start after turning thermostat knob to higher position, the high temperature switch may have opened during thermostat shutdown. Allow high temperature switch to reset. This usually takes 10­15 minutes. Try starting heater again after switch resets.
TO STOP HEATER
1. Tightly close natural gas supply v alv e.
2. Wait a few seconds. Heater will burn gas left in supply hoses.
3. Turn on/of f switch to the OFF position.
4. Unplug heater.
section, page
STORAGE
CAUTION: Disconnect heater
from natural gas supply.
1. Place plastic cover cap over brass fit­ting on inlet connector.
2. Store in dry, clean, and safe place. Do not store hose inside heater combustion chamber.
3. When taking heater out of storage, al­ways check inside of heater. Insects and small animals may place foreign objects in heater. K eep inside of heater free from combustible and foreign objects.
MAINTENANCE
WARNING: Never service heater while it is plugged in, con­nected to gas supply, operating, or hot. Severe burns and electri­cal shock can occur.
1. Keep heater clean. Clean heater annu­ally or as needed to remove dust and debris. If heater is dirty or dusty , clean heater with a damp cloth.
2. Inspect heater before each use. Check connections for leaks. Apply mixture of liquid soap and water to connections. Bubbles forming show a leak. Correct all leaks at once.
3. Have heater inspected yearly by a quali­fied service agency.
4. Keep inside of heater free from com­bustible and foreign objects.
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150,000 BTU/HR
FAN CROSS SECTION LP-PFA/P 013
FAN LP-PFA/P 023
NATURAL GAS CONSTRUCTION HEATER
SERVICE PROCEDURES
WARNING: Never service heater while it is plugged in, con­nected to gas supply, operating, or hot. Severe burns and electri­cal shock can occur.
UPPER SHELL REMOVAL
1. Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together.
2. Lift or slide upper shell off.
3. Remove fan guard.
FAN
IMPORTANT:
shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch.
1. Remove upper shell (column 1).
2. Use 1/8" hex wrench to loosen setscrew which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using soft cloth moistened with kerosene or solvent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Make sure setscrew is touching back of flat sur­face on motor shaft (see Figure 6).
7. Place setscrew on flat of shaft. T ighten setscrew firmly (40-50 inch-pounds).
8. Replace fan guard and upper shell.
Remove fan from motor
IGNITOR
1. Make sure gap between ignitor elec­trode and burner nozzle is .13⁄.15". Access ignitor electrode from inside combustion chamber. No other main­tenance is needed for ignitor.
Fan
Setscrew
Motor shaft
Figure 5 - Fan, Motor Shaft, and Setscrew Location
Fan
Hub
Motor Shaft
Setscrew
Figure 4 - Upper Shell Removal
SPECIFICATIONS
Input Rating (Btu/Hr) 150,000 Fuel Natural Gas Only For All Models Fuel Consumption 146 Cubic Feet/Hour Supply Pressure To Heater Min: 5"WC Max: 1/2 psi Internal Regulator Outlet Pressure 4" WC (Factory Preset) Manifold Pressure 5" WC Hot Air Output (CFM Approx) 550 Motor 3,430 RPM, 1/8 HP Electric Input 120 V/60 Hz Amperage 2.2 Ignition Direct Spark, Interrupted Type Ignitor Gap (Inches) .13/.15 Weight (Pounds) Heater: 24 Shipping: 35 Size - L x W x H (Inches) 36 1/4 x 14 1/2 x 20
Figure 6 - Fan Cross Section
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103887
OWNER’S MANUAL
WIRING DIAGRAMS
Electrical Ladder Diagram
Black
Position of Leads May Vary
T
Line
Electrical Connection Diagram
Insulated Connector
Green
Blue
Green
Black
Black
Blue
Ignitor
Solenoid Valve
Automatic Ignition System
G V VR ACR AC
Blue
Blue
Motor
Solenoid Valve
Automatic Ignition System
G V VR ACR AC
Orange
White
Green or Green/Yellow
White
Orange
White
Neutral
Green
TECHNICAL SERVICE
You may have further questions about this heater. If so, contact DESA International’s Technical Service Department at 1-800­323-5190 or visit our website at www.desatech.com.
REPLACEMENT PARTS
WARNING: Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Improper replacement parts could cause serious or fa­tal injuries. This will also protect your warranty coverage for parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central or call DESA International’s Tech­nical Service Department at 1-800-323-
5190. When calling DESA International, have ready:
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• purchase date In most cases, we will ask you to return the
defective part to the factory.
High
Temp
Switch
Black
On/Off Switch
Power Cord 120 VAC
103887
Black
Thermostat
T
Black
Black
White
Blue
Blue
White Black
Green
Black
White
Position of Leads May Vary
Motor
7
Green
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this prod­uct. If they can’t supply original replace­ment part(s), either contact your nearest Parts Central or call DESA International’s Parts Department for referral information at 1-800-972-7879. When calling DESA International, have ready:
• model number of your heater
• the replacement part number
150,000 BTU/HR NATURAL GAS CONSTRUCTION HEATER
ILLUSTRATED PARTS BREAKDOWN
BNG150T
24
32
10
34
31
1
11
37
33
38
2
3
5
43
50
51
6
4
23
25
45
26
9
8
7
44
21
6
29
45
46
18
8
20
17
19
7
30
L
®
O
R
T
I
X
A
M
42
27
Note: Screws are standard hardware items
8
15
22
28
40
44
12
48
41
14
20
16
47
49
35
36
39
13
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OWNER’S MANUAL
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 7 of this manual.
BNG150T
KEY PART NO. NUMBER DESCRIPTION QTY.
1 098511-114 Upper Shell 1 2 100647-01 Screw, #10-16 x 1/2" 8 3 098512-53 Combustion Chamber Kit 1 4 103891-01 Nozzle 1 5 103934-01 Ignitor 1 6 M11084-38 Screw, #8-18 x 3/8" 2 7 099334-03 Fuel Tube Kit 1 8 097806-02 Ignitor Cable 1 9 M51108-01 Heat Shield 1 10 M51153-01 Fan 1 11 103404-01 Motor 1 12 097776-01 Universal Bushing 1 13 078978-01 Sleeve Cap 1 14 103401-01 Male Connector 1 15 103403-01 Solenoid Valve 1 16 097966-12AA Base 1 17 M51605-02 DSI Control 1 18 M12461-7 Screw, #6-32 x 1" 2 19 099432-01 Hex Nut, #6-32 2 20 M11084-27 Screw, #10-16 x 1/2" 10 21 M50104-05 Shorty Bushing 1 22 M50104-01 Shorty Bushing 1 23 101481-05 Thermal Limit Switch 1 24 097968-05 Screw, #4-40 x 1/2" 2 25 097384-04 Hex Nut, #4-40 Captive Washer 2 26 098511-129 Lower Shell 1 27 097965-02AA Side Cover 1 28 098226-01 On/Off Switch 1 29 079010-38 Wire Assembly 1 30 103406-01 Regulator 1 31 M51104-01 Handle 1
KEY PART NO. NUMBER DESCRIPTION QTY.
32 M11084-29 Screw, #10-16 x 3/4" 2 33 097964-03AA Fan Guard 1 34 101206-01 35 M11143-1 Strain Relief Bushing 1 36 098219-17 Power Cord 1 37 M50631 Rubber Bumper 2 38 NTC-4C Lock Nut 2 39 099157-01 Break Mandrell Rivet, 3/16" 1 40 099125-01 Terminal Board 1 41 M12461-25 Screw, #10-32 x 1/4" 2 42 103407-01 Fitting, Union 1/2 NPT to 1/2 NPT 1 43 M11271-8 Clip Nut 8 44 101480-10 High Temperature Wire Assy 1 45 101480-11 High Temperature Wire Assy 1 46 098276-01 Plug 1/8 NPTF Hex 1 47 M10908-1 Screw Hex TPG “F” 6-32 x .25 2 48 097657-03 Built-in Thermostat 1 49 104905-01 Thermostat Knob 1 50 103400-02 Screw, Baffle 1 51 078896-02 Washer, Baffle 1
PARTS AVAILABLE—NOT SHOWN
079231-01 Service Center List 1 097940-09 Tradename Decal 2 103886-01 General Information Decal 1 099504-01 Warning Decal 2 103402-01 Wiring Decal 1 103021-01 Thermostat Decal 1 103889-01 NG Warning Decal 1
Motor & Relay Support Brkt Assy
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WARRANTY AND REPAIR SERVICE
INTERNATIONAL
KEEP THIS WARRANTY
LIMITED WARRANTY
DESA International warrants this product and any parts thereof, to be free from defects in materials and workmanship for one (1) year from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided.
This warranty covers only the cost of parts and labor required to restore the product to proper operating condition. Transportation and incidental costs associated with warranty repairs are not reimbursable under this warranty.
Warranty service is available only through authorized dealers and service centers. This warranty does not cover defects resulting from misuse, abuse, negligence, accidents, lack of proper maintenance, normal wear,
alteration, modification, tampering, contaminated fuels, repair using improper parts, or repair by anyone other than an authorized dealer or service center. Routine maintenance is the responsibility of the owner.
THIS EXPRESS WARRANTY IS GIVEN IN LIEU OF ANY OTHER WARRANTY EITHER EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DESA International assumes no responsibility for indirect, incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitations or exclusions may not apply to you. This Limited Warranty gives you specific legal rights and you may also have other rights which vary from state to state.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied.
WARRANTY SERVICE
Should your heater require service, return it to your nearest authorized service center. Proof of purchase must be presented with the heater. The heater will be inspected. A defect may be caused by faulty materials or workmanship. If so, DESA International will repair or replace the heater without charge.
REPAIR SERVICE
Return your heater to your nearest authorized service center. Repairs not covered by the warranty will be billed at standard prices. Each Service Center is independently owned and operated. We reserve the right to amend these specifications at any time without notice.
For information, write: DESA International, P.O. Box 90004
Bowling Green, Kentucky 42102-9004 ATTN: Customer Service Department
When writing, always include model number and serial number.
Model Serial No. Date of Purchase
2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004
www.desatech.com
103887 01
NOT A UPC
103887-01 Rev. C 06/99
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