Instruction/ maintenance manual of the product NTH35 Desa
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IMPORTANT: Read and understand this manual before assembling, start- ing or servicing heater. Improper use of heater can cause serious injury. Keep this manual for future reference.
2 104976 POR T ABLE FORCED AIR HEA TERS SAFETY INFORMA TION WARNINGS IMPORTANT: Read this Owner’s Manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.
3 104976 OWNER’S MANUAL Side Cover Lower Shell Fuel Cap Hot Air Outlet Upper Shell Flame-Out Control Reset Button Power Cord Fuel Tank Fan Guard Lower Shell Side Cover Fuel Tank Upper Shell Hot Air .
4 104976 POR T ABLE FORCED AIR HEA TERS Screw Wheel Support Frame Wheel Cap Nut Nut Extended Hub Front Handle Axle Rear Handle Air Inlet Fuel Tank Flange Hot Air Outlet ASSEMBL Y (FOR 100,000 AND 150,000 BTU/HR MODELS ONLY) These models are furnished with wheels and handles.
5 104976 OWNER’S MANUAL OPERA TION WARNING: Review and un- derstand the warnings in the Safety Information Section. They are needed to safely operate this heater. Follow all local codes when using this heater. TO START HEATER 1. Follow all ventilation and safety infor- mation.
6 104976 POR T ABLE FORCED AIR HEA TERS STORING, TRANSPOR TING, OR SHIPPING Note: If shipping, transport companies re- quire fuel tanks to be empty. 1. Drain fuel tank. Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel.
7 104976 OWNER’S MANUAL TROUBLESHOOTING WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. REMEDY 1. See Pump Pressur e Adjustment , page 10. 2. See Air Output, Air Intake and Lint Filters , page 10.
8 104976 POR T ABLE FORCED AIR HEA TERS Figure 9 - Fuel Filter Removal, 35/50/70,000 Btu/Hr Models Upper Shell Removal 1. Remove screws and lock washers along each side of heater using 5/16" nut- driver . These screws attach upper and lower shells together .
9 104976 OWNER’S MANUAL Spark Plug (35,000 Btu/Hr Model) 1. Remove upper shell (see page 8). 2. Remove fan (see page 13). 3. Remove fuel and air line hoses from nozzle assembly . 4. Remove spark plug wire from spark plug. 5. Remove two screws using 5/16" nut- driver and remove burner strap.
10 104976 POR T ABLE FORCED AIR HEA TERS Air Output, Air Intake, and Lint Filters 1. Remove upper shell (see page 8). 2. Remove filter end cover screws using 5/16" nut-driver . 3. Remove filter end cover . 4. Replace air output and lint filters.
11 104976 OWNER’S MANUAL Nozzle (35,000 Btu/Hr Model) 1. Remove upper shell (see page 8). 2. Remove fan (see page 13). 3. Remove fuel and air line hoses from nozzle assembly . 4. T urn nozzle assembly 1/4 turn to left and pull toward motor to remove.
12 104976 POR T ABLE FORCED AIR HEA TERS Pump Rotor (Procedure if Rotor is Binding) 1. Remove upper shell (see page 8). 2. Remove filter end cover screws using 5/16" nut-driver . 3. Remove filter end cover and air filters. 4. Remove pump plate screws using 5/16" nut-driver .
13 104976 OWNER’S MANUAL Fan IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch. 1. Remove upper shell (see page 8). 2. Use 1/8" allen wrench to loosen set- screw which holds fan to motor shaft.
14 104976 POR T ABLE FORCED AIR HEA TERS 1 2 3 4 5 6 7 8 9 11 22 13 13 15 16 17 18 19 20 21 22 39 43 23 24 26 27 28 29 30 31 32 35 36 37 38 22 14 10 11-1 11-2 11-3 11-4 11-5 33 34 40 41 42 21 46 45 44.
15 104976 OWNER’S MANUAL KEY PART PART NO. NUMBER DESCRIPTION QTY. 1 M51104-01 Handle 1 2 098511-231 Upper Shell 1 3 102432-01 Screw/Lockwasher, 1/2" 6 4 098512-43 Combustion Chamber 1 5 M51108.
16 104976 POR T ABLE FORCED AIR HEA TERS ILLUSTRA TED PA R T S BREAKDOWN NTH50 50,000 BTU/HR MODEL 10-6 10-3 10-2 10-4 10-5 10-7 Burner Head Assembly 10-1 18-1 18-2 18-18 18-4 18-5 18-6 18-7 18-8 18-9.
17 104976 OWNER’S MANUAL P ARTS LIST NTH50 50,000 BTU/HR MODEL This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part.
18 104976 POR T ABLE FORCED AIR HEA TERS 1 2 4 3 5 6 7 8 10 11 12 12 14 15 17 20 18 19 21 21 24 28 29 30 31 32 34 38 37 11 13 9 33 35 36 42 43 39 40 23 44 11 41 45 26 25 16 22 27 ILLUSTRA TED PA R T S.
19 104976 OWNER’S MANUAL KEY PART PART NO. NUMBER DESCRIPTION QTY. 1 M51104-01 Handle 1 2 098511-231 Upper Shell 1 3 102432-01 Screw/Lockwasher, 1/2" 6 4 098512-44 Combustion Chamber 1 5 M11084.
20 104976 POR T ABLE FORCED AIR HEA TERS 8-1 8-2 8-4 8-3 8-5 8-7 8-6 1 2 3 4 5 7 8 9 10 11 12 13 14 15 17 20 25 26 9 30 31 33 34 35 36 37 38 39 40 41 6 42 9 21 22 23 24 43 44 27 28 16 19 18 47 46 45 2.
21 104976 OWNER’S MANUAL KEY PART PART NO. NUMBER DESCRIPTION QTY. 1 098511-233 Upper Shell 1 2 102432-01 Screw/Lockwasher, 1/2" 8 3 098512-31 Combustion Chamber 1 4 M16660 Photocell Bracket 1 .
22 104976 POR T ABLE FORCED AIR HEA TERS 8-1 8-2 8-4 8-3 8-5 8-7 8-6 1 2 3 4 5 7 8 9 10 11 12 13 14 15 17 20 25 26 9 30 31 33 34 35 36 37 38 39 40 41 6 42 9 21 22 23 24 45 44 27 28 16 19 18 43 48 47 4.
23 104976 OWNER’S MANUAL **Not available as an assembly, order parts separately. KEY PART PART NO. NUMBER DESCRIPTION QTY. KEY PART PART NO. NUMBER DESCRIPTION QTY.
24 104976 POR T ABLE FORCED AIR HEA TERS ACCESSORIES Purchase accessories from your local dealer. HEAVY DUTY WHEELS AND HANDLE KIT - HA1202 For heavy duty applications. Makes your heater even more portable and convenient. For 35/50/70,000 Btu/Hr models.
25 104976 OWNER’S MANUAL EC CONFORMITY DECLARA TION NU-TOOL Group Carcroft Industrial Estate, Adwick-Le-Street Doncoster KN6 7DU, England Manufacturer: DESA International, Inc.
W ARRANTY INFORMA TION WARRANTIES INCLUDING THOSE OF MERCHANTABIL- ITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THIS EXPRESS WAR- RANTY. Any transportation charges, costs of installation, duty, taxes or any other charges whatsoever must be borne by the user.
An important point after buying a device Desa NTH35 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa NTH35 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa NTH35 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa NTH35 you will learn all the available features of the product, as well as information on its operation. The information that you get Desa NTH35 will certainly help you make a decision on the purchase.
If you already are a holder of Desa NTH35, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa NTH35.
However, one of the most important roles played by the user manual is to help in solving problems with Desa NTH35. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa NTH35 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
