Desa GWN30TB user manual

User manual for the device Desa GWN30TB

Device: Desa GWN30TB
Category: Electric Heater
Manufacturer: Desa
Size: 3.73 MB
Added : 2/3/2014
Number of pages: 60
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Abstracts of contents
Summary of the content on the page No. 1

UNVeNTed (VeNT-FRee) Bl Ue FlaMe Gas Hea TeR
saFeTY INFoRMa TIoN aNd INsT alla TIoN MaNU al
Models
GWN20TB, GWP20TB, GWN30TB, GWP30TB, HdB20NT, HdB20PT,
HdB30NT, HdB30PT, MN20T, MP20T, MN30T, MP30T,
VN20BTB, VP20BTB, VN30BTB, VP30BTB WMN20a, WMP20a
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity o

Summary of the content on the page No. 2

TaBle oF CoNTeNTs Safety .................................................................. 2 Troubleshooting ................................................. 19 Local Codes......................................................... 4 Specifications .................................................... 23 Unpacking............................................................ 4 Replacement Parts ............................................ 23 Product Identification ..................................

Summary of the content on the page No. 3

saFeTY Continued Natural and Propane/LP Gas: Natural and Keep the appliance area clear propane/LP gases are fuel gases. Fuel gases and free from combustible ma- are odorless. An odor-making agent is added to fuel gases. The odor helps you detect a fuel terials, gasoline and other flam- gas leak. However, the odor added to fuel mable vapors and liquids. gas can fade. Fuel gas may be present even 1. This appliance is only for use with the type though no odor exists. of gas indicated on the

Summary of the content on the page No. 4

saFeTY Continued 12. Operating heater above elevations of 14. Provide adequate clearances around air 4,500 feet could cause pilot outage. openings. 13. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity. l oCal Codes Install and use heater with care. Follow all lo- State of Massachusetts: The installation cal codes. In the absence of local codes, use must be made by a licensed plumber or the latest edition of National Fuel Gas Code, gas fitter

Summary of the content on the page No. 5

aIR FoR CoMBUsTIoN aNd VeNTIla TIoN Unusually Tight Construction WARNING: This heater shall The air that leaks around doors and windows not be installed in a room or may provide enough fresh air for combustion and ventilation. However, in buildings of un- space unless the required vol- usually tight construction, you must provide ume of indoor combustion air additional fresh air. is provided by the method de- Unusually tight construction is defined as scribed in the National Fuel Gas co

Summary of the content on the page No. 6

aIR FoR CoMBUsTIoN aNd VeNTIla TIoN Continued 4. Compare the maximum Btu/Hr the space DETERMINING FRESH-AIR FLOW can support with the actual amount of Btu/ FOR HEATER LOCATION Hr used. Determining if You Have a Confined or _______ Btu/Hr (maximum can support) Unconfined Space _______ Btu/Hr (actual amount used) Use this work sheet to determine if you have a Example: confined or unconfined space. 51,200 Btu/Hr (maximum the space can Space: Includes the room in which you will install

Summary of the content on the page No. 7

aIR FoR CoMBUsTIoN aNd VeNTIla TIoN Continued vENTILATION AIR Ventilation Air From Inside Building 12" This fresh air would come from an adjoining unconfined space. When ventilating to an Ventilation Grills adjoining unconfined space, you must provide Into Adjoining Room, Ventilation two permanent openings: one within 12" of the Option 2 Grills into Or Adjoining Remove ceiling and one within 12" of the floor on the Room, Door into Option 1 Adjoining wall connecting the two spac

Summary of the content on the page No. 8

INsTalla TIoN Continued INSTALLATION ITEMS CAUTION: This heater creates Before installing heater, make sure you have warm air currents. These currents the items listed below. • for propane/LP gas, external regulator move heat to wall surfaces next (supplied by installer) to heater. Installing heater next • piping (check local codes) to vinyl or cloth wall coverings or • sealant (resistant to propane/LP gas) operating heater where impurities • equipment shutoff valve * (such as, but not

Summary of the content on the page No. 9

INsTalla TIoN Continued Front Panel THERMOSTAT SENSING BULB Screw (Thermostat Models Only) The thermostat sensing bulb has been placed below the heater. 1. Place clamp on thermostat sensing bulb as shown in Figure 5. Clamp is provided in hardware package. 2. Snap clamp into upper mounting hole as shown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is point- ing up. Figure 7 - Removing Front Panel Of Heater (actual heater

Summary of the content on the page No. 10

INsTalla TIoN Continued 2. Mark screw locations on wall (see Figure 8). Attaching To Wall Anchor Method For attaching mounting bracket to hollow Note: Only mark last hole on each end of walls (wall areas between studs) or solid walls mounting bracket. Insert mounting screws (concrete or masonry) through these holes only. 1. Drill holes at marked locations using 3. Remove tape and mounting bracket from 5/16" drill bit. For solid walls (concrete or wall. masonry), drill at least 1" deep. 1

Summary of the content on the page No. 11

INsTalla TIoN Continued Installing Bottom Mounting Screws MOUNTING HEATER TO FLOOR 1. Locate two bottom mounting holes. These WITH OPTIONAL FLOOR KIT holes are near bottom on back panel of Mounting Base Feet to Heater heater (see Figure 12). Note: A 90° elbow is required for mounting this 2. Mark screw locations on wall. unit and must be installed BEFORE base feet 3. Remove heater from mounting bracket. to provide proper clearance (see Figure 15). 4. If installing bottom mounting screws int

Summary of the content on the page No. 12

INsTalla TIoN Continued CONNECTING TO GAS SUPPLY CAUTION: Use only new, black WARNING: This appliance iron or steel pipe. Internally-tinned requires a 3/8" NPT (National copper tubing may be used in Pipe Thread) inlet connection to certain areas. Check your local the pressure regulator. codes. Use pipe of large enough diameter to allow proper gas vol- ume to heater. If pipe is too small, WARNING: A qualified ser- undue loss of volume will occur. vice person must connect heater to ga

Summary of the content on the page No. 13

INsTalla TIoN Continued IMPORTANT: Hold the pressure regulator CHECKING GAS CONNECTIONS with wrench when connecting it to gas pip- ing and/or fittings. Do not over tighten pipe WARNING: Test all gas piping connection to regulator. The regulator body and connections, internal and could be damaged. external to unit, for leaks after Pressure installing or servicing. Correct Heater Regulator Cabinet all leaks at once. WARNING: Never use an 3/8" NPT Pipe Nipple open flame to check for a le

Summary of the content on the page No. 14

INsTalla TIoN Continued Test Pressures Equal To or Less Than Thermostat Gas Valve 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Fig- ure 16). 2. Pressurize supply piping system by either Gas opening propane/LP supply tank valve Meter for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air. 3. Check all joints from gas meter for natural gas (see Figure 17) or propane/LP supply tank for propane/LP gas, to equipment shutof

Summary of the content on the page No. 15

oPeRa TIoN 6. Thermostat Models: Turn control knob FOR YOUR SAFETY READ counterclockwise to the PILOT BEFORE LIGHTING position. Press in control knob for five (5) seconds. WARNING: If you do not fol- Manual Models: Press in and turn control low these instructions exactly, knob counterclockwise to the PILOT a fire or explosion may result position. Keep control knob pressed in for causing property damage, per- five (5) seconds. sonal injury or loss of life. 7. With control knob press

Summary of the content on the page No. 16

oPeRa TIoN Continued Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. WARNING: Always operate This may not always agree with room tem- manual control heaters at the perature (depending on housing construction, locked positions. Operation installation location, room size, open air tem- between these positions may peratures, etc.). Frequent use of your heater will create a possible health hazard let you determine your own comfort levels. if used

Summary of the content on the page No. 17

oPeRa TIoN Continued Extension Cord minutes after unit cycles off or is turned off, Use extension cord if needed. The cord must blower will shut off. Blower will cycle on and off have a three-prong, grounding plug and a in this manner. Note: If you have a heater with three-hole receptacle. Make sure cord is in a thermostat, the heater and blower will not turn good shape. It must be heavy enough to carry off and on at exactly the same time. Blower cycle the current needed. An undersized cord

Summary of the content on the page No. 18

CleaNING aNd MaINTeN aNCe We also recommend that you keep the burner WARNING: Turn off heater tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend and let cool before cleaning. using compressed air no greater than 30 PSI. Your local computer store, hardware store or CAUTION: You must keep home center may carry compressed air in a control areas, burner and circu- can. If using compressed air in a can, please follow the directions on the can. If you

Summary of the content on the page No. 19

TRoUBlesHoo TING WARNING: Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERvED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, 1. Ignitor electrode positioned 1. Replace pilot assembly there is no spark at ODS/ wrong pilot 2. Ignito

Summary of the content on the page No. 20

TRoUBlesHoo TING Continued OBSERvED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released 2. Control knob not pressed in 2. After ODS/pilot lights, keep long enough control knob pressed in 30 seconds 3. Equipment shutoff valve not 3. Fully open equipment shut- fully open off valve 4. Thermocouple connection 4. Hand tighten until snug, loose at control valve then tighten 1/4 turn more


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