Page 2 - CONTENTS; SECTION; Determining Fresh-Air Flow for Heater Location
2 100354 CONTENTS SECTION PAGE Safety Information ......................................................................... 3 Product Identification .................................................................... 5 Local Codes .......................................................................
Page 3 - WARNINGS; Carbon monoxide poisoning may lead to death!; Continued
3 100354 SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely be-fore trying to assemble, operate, or service this heater. Improper use ofthis heater can cause serious injury or death from burns, fire, explosion,electrical shock, and carbon monoxide poisoning. DAN...
Page 4 - Right Side: 12 inches
4 100354 SAFETY INFORMATION Continued WARNINGS Continued 7. Provide the following minimum heater clearances from combustibles (as viewed from the front of heater): Front: 48 inches Back: 6 inches Top: 53 inches Right Side: 12 inches Left Side: 6 inches 8. Do not run heater • where flammable liquids ...
Page 5 - Figure 2 - Vented Propane Gas Heater, Rear View
5 100354 PRODUCT IDENTIFICATION ControlKnob Draft HoodOutlet forVentingSystem Figure 2 - Vented Propane Gas Heater, Rear View Lower FrontAccess Panel IgnitorButton ControlValve Figure 1 - Vented Propane Gas Heater
Page 6 - dealer where you bought heater.; Piezo Ignition System; NOTICE; CHECK GAS TYPE; Before installing heater, make sure you have all items below.; WARNING
6 100354 Install and use heater with care. Follow all local codes. In the absence of localcodes, use the latest edition of the following: • National Fuel Gas Code ANSI Z223.1, also known as NFPA 54 *• National Electrical Code ANSI/NFPA 70 *• National Standard of Canada CAN1-B149 ** *Available from: ...
Page 7 - For convenience and efficiency, install heater; Figure 3 - Heater Clearances; CAUTION
7 100354 INSTALLING HEATER Continued LOCATING HEATER WARNING Never install the heater • in a mobile home or a recreational vehicle.• where curtains, furniture, clothing, or other flam- mable objects are less than 48 inches from the front,53 inches from the top, 12 inches from the right sideand 6 inc...
Page 8 - Venting/chimney materials are not supplied with heater.; VENTING HEATER; INSTALLING
8 100354 Note: Venting/chimney materials are not supplied with heater. VENTING HEATER INSTALLING HEATER Continued WARNING A qualified service person must install the venting systemfor this heater. If venting system is not properly installedand maintained, the vent safety shut-off system will pre-ven...
Page 9 - Do not vent heater in any of the following ways (see Figure 4).
9 100354 INSTALLING HEATER Continued VENTING HEATER (continued) WARNING ICON G 001 WARNING Do not vent heater in any of the following ways (see Figure 4). Heater must be vented to the out-doors. Never vent heater to anotherroom or inside a building. The vertical section of vent pipe mustextend at le...
Page 10 - Prefabricated or Masonry All-Fuel Chimney -; This is a masonry chimney or a; Figure 5 - Typical Construction of Venting Systems
10 100354 VENTING HEATER (continued) INSTALLING HEATER Continued Proper Size Vent To safely vent heater, the vent connector pipe must be the same diameter as the drafthood outlet on the rear of the heater. Pipe that is too small can cause flue gas to spillfrom the heater. Fasten vent connector to th...
Page 11 - Figure 6 - External Regulator with Vent Pointing Down; If the supply line
11 100354 INSTALLING HEATER Continued CONNECTING TO GAS SUPPLY The installer must supply an external regulator. The external regulator will reduceincoming gas pressure. You must reduce incoming gas pressure to between 11 and14 inches of water. If you do not reduce incoming gas pressure, heater regul...
Page 12 - Use two pipe wrenches when connecting gas piping to gas control; Figure 7 - Gas Connection
12 100354 Installation must include a manual shutoff valve, ground joint union, plugged 1/8"NPT tap and a sediment trap. Locate NPT tap within reach for test gauge hook up.NPT tap must be upstream from heater (see Figure 7). Apply pipe joint sealant lightly to male threads. This will prevent exc...
Page 13 - Figure 8 - Manual Shutoff Valve; Pressure Testing Gas Supply Piping System; Test Pressures In Excess of 1/2 PSIG; pipe. Pressures in excess of 1/2 PSIG will damage heater regulator.; Test Pressures Equal To or Less Than 1/2 PSIG; propane supply tank valve.; Pressure Testing Heater Gas Connections; internal joints for leaks.
13 100354 INSTALLING HEATER Continued CHECKING GAS CONNECTIONS Figure 8 - Manual Shutoff Valve PO On Position Off Position Pressure Testing Gas Supply Piping System Test Pressures In Excess of 1/2 PSIG 1. Disconnect heater and its individual manual shutoff valve from gas supply pipe. Pressures in ex...
Page 14 - Locate the glass panel package inside the back of the heater.; Figure 9 - Removing Lower Front Access Panel; Glass panels may have sharp edges. Handle with care.
14 100354 INSTALLING HEATER Continued INSTALLING GLASS PANEL 1. Locate the glass panel package inside the back of the heater. WARNING ICON G 001 CAUTION Before installing glass panels, inspect the edges. If younotice any chips or cracks, do not install. If the surfaceon either side is deeply scratch...
Page 15 - all the way to the left side.
15 100354 INSTALLING HEATER Continued 2 1 GlassPanel Lower GlassRetainingChannel Figure 11 - Inserting Top Edge of Glass Panel into Upper Glass Retaining Channel 2 1 GlassPanel Lower GlassRetainingChannel Upper GlassRetainingChannel Lower FrontAccess Area Figure 12 - Inserting Glass into Lower Retai...
Page 17 - Ventilating Confined; Follow the steps below to see if enough fresh air is available.; Figure 13 - Checking for Draft Spillage; This shows there is enough fresh air in area for
17 100354 FRESH AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Example 1: Locating Heater in Unconfined (Open) Area NOTICE An unconfined area has a minimum air volume of 50cubic feet for each 1000 BTU/Hr input rating of allappliances in the area (cubic fe...
Page 18 - Figure 14 - Ventilation Air from Outdoors; This is a hazardous situation. Draft hood spillage re-; DANGER; Providing Permanent Fresh-Air Ventilation; IMPORTANT
18 100354 FRESH AIR FOR COMBUSTION AND VENTILATION Continued Figure 14 - Ventilation Air from Outdoors Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re- leases poisonous carbon monoxide gas into your home. DANGER Carbon monoxide poisoning may lead to death! If draft hood sp...
Page 19 - Figure 15 - Ventilation Air from Inside Building; Ventilating Confined Area; This fresh air would come from an adjoining open area or outdoors.
19 100354 FRESH AIR FOR COMBUSTION AND VENTILATION Continued After providing ventilation between rooms, check for draft hood spillage (see DraftHood Spillage Test, page 17). If draft hood spillage still occurs, provide moreventilation between rooms or provide permanent ventilation from outdoors. See...
Page 20 - pilot, follow these instructions exactly.; FOR YOUR SAFETY READ BEFORE LIGHTING; Make sure manual shutoff valve is fully open.; LIGHTING INSTRUCTIONS
20 100354 OPERATING HEATER A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle ...
Page 21 - OPERATING; Figure 17 - Viewing Pilot
21 100354 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near thefloor. If you smell gas, STOP! Follow “B” in the safety information at the top ofpage 17. If you don’t smell gas, go to the next step. 6. Turn control knob clockwise Clockwise to the PILOT position. Fully ...
Page 22 - Remove lower front access panel on heater.; Shutting Off Heater
22 100354 OPERATING HEATER Continued TO TURN OFF GAS TO APPLIANCE MANUAL LIGHTING PROCEDURE 1. Remove lower front access panel on heater. 2. Locate pilot. Pilot is attached to the front of burner. 3. Follow steps 1 through 6 under Lighting Instructions, pages 20 and 21. 4. With control knob depresse...
Page 23 - Check pilot flame pattern and burner flame pattern often.; PILOT FLAME PATTERN; Figure 18 - Correct Pilot; BURNER FLAME PATTERN; To view burner flame, look through front glass of heater.
23 100354 INSPECTING PILOT AND BURNER FLAME Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilotflame pattern. The incorrect pilot flame is not touching the thermocouple. This willprevent the t...
Page 24 - Figure 21 - Incorrect Burner Flame Patterns; If burner flame pattern is incorrect, as shown in Figure 21
24 100354 INSPECTING PILOT AND BURNER FLAME Continued Sharp BlueFlame HighYellowFlame FlameLiftingOff ofBurner Figure 21 - Incorrect Burner Flame Patterns Figure 20 - Correct Burner Flame Pattern If burner flame pattern is incorrect, as shown in Figure 21 • turn heater off (see To Turn Off Gas to Ap...
Page 25 - Turn off heater and let cool before cleaning or servicing.; CLEANING; Air Passageways; • Use a vacuum cleaner or pressurized air to clean.; Exterior; cabinet to remove dust.
25 100354 WARNING Turn off heater and let cool before cleaning or servicing. WARNING Keep heater clear and free from combustible materials,gasoline, and other flammable vapors and liquids. CAUTION You must keep control areas, burner, and circulating airpassageways of heater clean. Inspect these area...
Page 26 - SHOOTING; REMEDY
26 100354 TROUBLE- SHOOTING Note: All troubleshootingitems are listed in order ofoperation. WARNING Turn off and unplug heater and let cool before servicing.Unless you need gas supply for testing, shut off manualshutoff valve before servicing. Only a qualified service per-son should service and repa...
Page 30 - Figure 22 - Removing Control Valve and Burner Tube
30 100354 SERVICE PROCEDURES Removing Control Valveand Burner Tube 1. Shut off gas supply to heater. 2. Remove lower front access panel on heater. 3. Disconnect burner tube from orifice holder (seeFigure 22). 4. Remove pilot gas line from control valve (seeFigure 22). 5. Disconnect wire connec- tors...
Page 31 - Removing Burner
31 100354 SERVICE PROCEDURES Continued Removing Burner 1. Shut off gas supply to heater. 2. Remove lower front access panel on heater. 3. Disconnect burner tube from orifice holder (seeFigure 23). 4. Remove orifice holder from burner (see Figure23). 5. Remove pilot burner bracket nuts and removepilo...
Page 32 - Changing Burner Orifice
32 100354 SERVICE PROCEDURES Continued Figure 24 - Orifice Location (35,000 BTU/Hr Burner Shown) Figure 25 - Orifice BurnerTube OrificeHolder Orifice Burner Changing Burner Orifice 1. Shut off gas supply to heater. 2. Remove lower front access panel on heater. 3. Disconnect burner tube from orifice ...
Page 33 - Model; SPECIFICATIONS; When gas pressure is too low; SERVICE
33 100354 TECHNICAL SERVICE You may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical Service Department at 1-800-323-5190. 35,000 BTU/Hr 50,000 BTU/Hr Model Model BTU 35,000 50,000 Type Gas Propane Only Propane Only Ignition Piezo...
Page 34 - age for parts replaced under warranty.; Parts Under Warranty; Parts Not Under Warranty; When calling DESA International, have ready; ORDERING
34 100354 Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact Vanguard dealer or call DESA International’s Technical Service Depart-ment at 1-800-323-5190. When calling DESA International, have ready • ...
Page 35 - ACCESSORIES; BLOWER KIT - PART NUMBER GA6010
35 100354 ACCESSORIES BLOWER KIT - PART NUMBER GA6010 For all models. Provides better heat distribution.Makes heater more efficient. Complete installationand operating instructions provided with blower. Purchase these heater accessories from your local dealer. If they can not supplythese accessories...
Page 37 - PARTS LIST
37 100354 This list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Ordering Replacement Parts on page 34 of thismanual. KEY PART NUMBER FOR NO. GVB50P GVB35P DESCRIPTION QTY. 1 100206-02 100206-01 Combustion Chamber 1 2 098324-02 098324-02 Co...
Page 39 - NOTES
39 100354 _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ __________________________...
Page 40 - WARRANTY INFORMATION; LIMITED WARRANTY; INTERNATIONAL; DESA
100354-01REV. C6/94 Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standardwritten warranty. We make no other warranty, expressed or implied. WARRANTY INFO...