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Specifications (3) lIlIlIlIlIlIluloop q? OPERATING INSTRUCTIONS & PARTS MANUAL d, BLOWER TYPE GAS UNIT HEATERS WITH ELECTRONIC IGNITION MODELS 3E389B THRU 3E392B FORM 5S2485 .08262 0491/073/50 READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE OR MAINTAIN THE PRODUCT DESCRIBED. PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION. FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND /OR PROPERTY DAMAGE! RETAIN INSTRUCTIONS FOR FUTURE REFERENCE. APPROVED FOR USE IN CALIFORNIA. FOR YOUR SAFETY IF YOU SMELL GAS: '4 1. OPEN WINDOWS. x 2. DO NOT TOUCH ELECTRICAL � � { °:" SWITCHES. © 3. EXTINGUISH ANY OPEN FLAME. • 4. IMMEDIATELY CALL YOUR GAS Figure 1 — Dayton Gas Unit Air Heater SUPPLIER. Description The Dayton Fuel- Trimmer blower type gas unit heater FOR YOUR SAFETY is a factory assembled, high static pressure type, cen- THE USE AND STORAGE OF GASO- trifugal blower designed for heavy duty applications such as continuous operation or where a single heater LINE OR OTHER FLAMMABLE VAPORS must do the entire heating job in a large area. Blower AND LIQUIDS IN OPEN CONTAINERS heaters may be used with the standard adjustable IN THE VICINITY OF THIS APPLIANCE louvers or with short duct runs and discharge nozzles for spot heating. Blower heaters are somewhat quieter IS HAZARDOUS. than fan type units and may be used where very low sound levels are required. FEATURES OF GAS UNIT HEATER WARNING: IMPROPER INSTALLATION, A. HEAT EXCHANGER: 20 gauge aluminized steel ADJUSTMENT, ALTERATION, SERVICE tubes; two vertical seams. Heat exchanger tubes OR MAINTENANCE CAN CAUSE PROP - "MIG" welded to heat exchanger top and bottom ERTY DAMAGE, INJURY OR DEATH. panels es gn assue of long I fee aluminized steel. Quality READ THE INSTALLATION, OPERATING B. DRAFT DIVERTER: Made of corrosion resistant AND MAINTENANCE INSTRUCTIONS aluminized steel. THOROUGHLY BEFORE INSTALLING OR C. HOUSING: 20 gauge steel with gray enamel finish. SERVICING THIS EQUIPMENT. D. LOUVERS: Independently adjustable for maximum air distribution. Stops prevent closure of louvers. E. MOTOR: Automatic reset thermal protection. 115V, WARNING: INSTALL, OPERATE AND 60 Hz. Specially designed for each heater. MAINTAIN UNIT IN ACCORDANCE WITH F. BLOWER: Dynamically balanced design with solid MANUFACTURER'S INSTRUCTIONS TO steel shaft and steel wheel to assure quiet, efficient AVOID EXPOSURE TO FUEL SUBSTAN- operation. Belt drive with adjustable motor pulley CES OR SUBSTANCES FROM INCOM- provides considerable latitude in CFM, static pressure or both. PLETE COMBUSTION WHICH CAN G. FAN SWITCH: Has built -in heat anticipator to CAUSE DEATH OR SERIOUS ILLNESS. assure positive fan delay (Not shown). THE STATE OF CALIFORNIA HAS H. LIMIT SWITCH: Prevents excessive outlet air DETERMINED THAT THESE SUBSTAN- temperature (Not shown). CES MAY CAUSE CANCER, BIRTH I. MOTOR SUPPORT: Motor mounted on rigid DEFECTS, OR OTHER REPRODUCTIVE bracket to blower housing. Mounting adjusters are HARM. rubber padded to assure quiet operation. FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 Description (Continued) J. DUAL AUTOMATIC GAS VALVE: 24VAC gas control M. HANGERS: Two point suspension with 9/16" dia. valve with pilot gas and main gas solenoid valves. hanging holes provided at top of unit. Two additional Pilot valve also serves as redundant main gas valve. stabilizing points with 9/16" dia. holes are provided K. AIR SHUTTERS: Individually adjustable; friction on the blower housing. locked, manually rotated air shutter adjustment. (Not N. TRANSFORMER: 24VAC transformer standard. shown.) O. IGNITER: 24VAC pilot ignition and safety device. L. BURNERS: Stamped aluminized steel with stain- (Part of dual automatic valve on some models.) less steel port protectors for maximum efficiency. (Not shown.) Specifications and Performance MODEL NAT INPUT FREE AIR 80 °F RISE BLOWER MOTOR FLUE HEIGHT WIDTH DEPTH HANGING APPROX. GAS BTU/HR DELIVERY 0.2" S.P. SIZE H .P. SIZE t t E , * DIM. SHP. INLET CFM CFM A t WT. 3E389B 1/2" 100,000 1,200 925 9" 1/4 6 "R,V 331/4 17/ 42% 14 253 Ibs. 3E39013 1/2 200,000 2,400 1,850 12 3/4 8 "R,H 381/ 26 47 23 351 3E39113 3/4 300,000 3,950 2,780 2 @10 3/4 10 "0V,H 381/ 37 481 33 459 3E392B 3/4 400,000 4,800 3,700 2 @12 1 12 "OV,H 381 48 51 44 _ 582 R = Round, 0 = Oval, V = Vertical, H = Horizontal ( *)Centerline. ( * *)To top of hanger. (t) See Figure 4. (11) To back of housing. Gas Pipe Sizing Chart MAXIMUM CAPACITY OF PIPE IN CUBIC FEET OF GAS PER HOUR FOR GAS PRESSURES OF 0.5 PSIG OR LESS AND A PRESSURE DROP OF 0.3 INCH WATER COLUMN (BASED ON A 0.60 SPECIFIC GRAVITY GAS) Nominal LENGTH IN FEET Iron Pipe Size, 10 20 30 40 50 60 70 80 90 100 125 150 175 200 Inches 1/2 132 92 73 63 56 50 46 43 40 38 34 31 28 26 3/4 278 190 152 130 115 105 96 90 84 79 72 64 59 55 1 520 350 285 245 215 195 180 170 160 150 130 120 110 100 1 -1/4 1050 730 590 500 440 400 370 350 320 305 275 250 225 210 1 -1/2 1600 1100 890 760 670 610 560 530 490 460 410. 380 350 320 2 3050 2100 1650 1450 1270 1150 1050 990 930 870 780 710 650 610 2 -1/2 4800 3300 2700 2300 2000 1850 1700 1600 1500 1400 1250 1130 1050 980 3 8500 5900 4700 4100 3600 3250 3000 2800 2600 2500 2200 2000 1850 1700 4 17500 12000 9700 8300 7400 6800 6200 5800 5400 5100 4500 4100 3800 3500 1. Determine required CU.FT /HR. by dividing heater BTU /HR. input from rating plate by 1,000. 2. For Natural Gas: Select pipe size directly from chart. General Safety Information 1. This heater is intended ONLY for permanent and checked by a qualified electrician, using copper installation in accordance with the National Electrical wire only. All gas connections should be made and Code (NEC), ANSI Standard Z223.1 -1988 (NFPA No. leak- tested by a suitably qualified individual, per 54: "National Fuel Gas Code "), all applicable local instructions in this manual. codes and ordinances, and all sections of this 3. Use only the fuel for which the heater is designed manual. Standards referred to herein are those that (see nameplate). Using LP gas in a heater that were applicable at the time the design of the heater requires natural gas, or vice versa, will create the risk was certified. ANSI Standards are available from the of gas Teaks, carbon monoxide poisoning and American Gas Association, 1515 Wilson Blvd., explosion. Arlington, VA 22209. NFPA Standards are available WARNING: DO NOT ATTEMPT TO CONVERT THE from the National Fire Protection Association, HEATER FOR USE WITH A FUEL OTHER THAN THE Batterymarch Park, Quincy, MA 02269. ONE INTENDED. SUCH CONVERSION IS DANGER - NOTE: This heater is suitable for use in airplane hangars OUS, AS IT WILL CREATE THE RISKS LISTED when installed in accordance with ANSI /NFPA No. 409- ABOVE. 1990, and in public garages when installed in 4. Make certain that the power source conforms to the accordance with NFPA No. 88A -1985 and NFPA No. electrical requirements of the heater. Disconnect 886 -1985' power before installing or servicing the heater. If the 2. Follow installation instructions CAREFULLY to avoid power disconnect is out -of- sight, lock it in the open creating unsafe conditions. All wiring should be done position and tag it to prevent unexpected application —2— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 General Safety Information (Continued) involved, circulation of air around the perimeter is power. Failure to do so could result in fatal electric recommended (where heated air flows along of p exposed walls). Satisfactory results can also be shock. obtained where multiple heaters are located WARNING: DO NOT DEPEND UPON A THERMOSTAT toward the center of the area with heated air OR OTHER SWITCH AS THE SOLE MEANS OF DIS- directed toward the outside walls. Be careful to CONNECTING POWER WHEN INSTALLING OR SER- avoid obstacles and obstructions which could VICING THE HEATER. ALWAYS DISCONNECT impede cool air distribution patterns. Heat throw POWER AT THE MAIN CIRCUIT BREAKER AS distances, as well as examples of heater loca- DESCRIBED ABOVE. FAILURE TO DO SO COULD tions, are presented (see Figure 2). RESULT IN FATAL ELECTRIC SHOCK. e. Locations to avoid: Unit heaters should not be 5. Special attention must be given to any grounding installed within corrosive or flammable atmo- information pertaining to this heater. To prevent the spheres. Avoid locations where extreme drafts • risk of electrocution, the heater must be securely and can affect burner operation. Do not locate any adequately grounded. This should be accomplished gas fired heater where air for combustion con - by connecting a grounded conductor between the tans chlorinated vapors vapors or acid fumes. service panel and the grounding screw provided in CAUTION: Presence of these impurities can cause the conduit box of the heater. To ensure a proper premature failure of the heat exchanger, and void ground, the grounding means must be tested by a the warranty (see Limited Warranty on back page). qualified electrician. NOTE: Unit heater sizing should be based upon heat 6. Do not insert fingers or foreign objects into the heater loss calculations where Unit Heater output equals or or its air moving device. Do not block or tamper with exceeds heat loss. Heater output is approximately 80% the heater in any manner while it is in operation or of input BTU /HR. rating. just after it has been turned off, as some parts may be hot enough to cause injury. STANDARD UNIT HEATER APPLICATIONS 7. This heater is intended for general heating applica- APPROXIMATE DISTANCE OF HEAT THROW (FEET) tions ONLY. It must NOT be used in potentially dan- gerous locations such as flammable, explosive, Distance from chemical -laden or wet atmospheres. floor to bottom Size Unit — BTU Input (Multiply by 1000) 8. This heater must not be used as a makeup air heater. of unit HT. Such usage voids the warranty and will create 100 200 300 400 unsafe operation. 8' 60 80 105 120 9. In cases in which property damage may result from 10' 54 68 90 100 malfunction of the heater, a backup system or a tem- perature sensitive alarm should be used. 12' 44 61 80 90 15' NR* 52 70 80 Installation 20' NR* 46 63 70 NOTE: For installation in Canada, see page 5. ( *)Not Recommended 1. HEATER LOCATION: Location of unit heaters is HEATER LOCATION related directly to the selection of sizes. Basic rules — to follow: -D C a. Mounting height: As a general rule, unit heaters + 4 must be installed 8 feet above the floor. Less effi- cient air distribution results at higher levels. Of course, there are exceptions to this principle. f t f Occasionally, unit heaters must be mounted at 12 d to 16 feet above the floor to clear obstacles. In this i 8 l case, it is advisable to use centrifugal blower heaters. One exception to the minimum mounting height would be in a school classroom if permit- t f ted by local codes, or other structures where ceil- �. ing heights are 10 feet or less. i - I ,_ b. Unit heaters should be installed in airplane Figure 2 hangars and public garages as follows: In 2. CLEARANCES: Every gas appliance should be airplane hangars, units must be at least 10 feet located with respect to building construction and above the upper surface of wings or engine other equipment so as to permit access to the appli- enclosures of the highest aircraft to be stored in ance. Clearance between vertical walls and vertical the hangar, and 8 feet above the floor in shops, sides of appliance shall be no less than 18 ". Mini - offices, and other sections of the hangar where mum clearance between top of appliance and ceil- aircraft are not stored or housed. Refer to ing is 6 ". Minimum clearance from combustibles to ANSI /NFPA No. 409 -1990. the bottom of the unit is 12 ". However, this bottom c. in public garages, unit heaters must be at least 8 clearance should be maintained at 21" for access to feet above the floor. Refer to NFPA No. 88A-1985 the burners. Minimum clearance from combustibles and NFPA No. 88B -1985. to the flue collector is 6 ". Adequate clearance must d. Air distribution: Direct air towards areas of maxi- be maintained around air opening into the combus- mum heat loss. When multiple heaters are tion chamber. —3— , FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 installation (Continued) a. GAS CONNECTIONS: (See Figures 5 & 7) HEATER MOUNTING This unit heater must be connected to a gas sup- ply capable of supplying its full rated capacity at STEEL CONSTRUCTION* a pressure not less than 5" WC nor greater than STD. I -BEAM 14" WC for natural gas. The connecting pipe ROD SADDLE,___ should be sized in accordance with the ANSI ■ STD. I -BEAM ; NUT & WASHER Standard Z223.1 National Fuel Gas Code. See -Anillir II CLAMP Q % gas pipe sizing chart for proper size of gas sup- ■ ®. - -- �- ply piping. Gas piping supplied by the unit heater CHANNEL THREADED ROD ° �l ' manufacturer has been tested for leaks. A . WASHER & NUT f °'1 ground joint union and a manual gas valve t THREADED MALLEABLE I ROD should be installed ahead of the unit heater con - IRON BOLT trols to permit servicing. It is recommented that THREADED PIPE IRON BO TE pipe compound which is resistant to the action of liquified petroleum gases be used. Do not over Figure 3 tighten the inlet gas piping into the valve. This may cause stresses that would crack the valve. Gas supply piping and all factory unit WOOD CONSTRUCTION JOISTS' piping should be checked for gas Teaks with a soapy water solution or some other approved JOIST WASHER , method, but never with matches or any other & NUT source of ignition. A drip leg must be installed ahead of the unit. A 1/8" N.P.T. plugged tap - — -t.• ping, accessible for test gauge connection, - must be installed immediately upstream of the 101 WI T. Tir gas supply connection to the appliance. 2" X 6" LAG BOLTED THREADED ROB _ LAG BOLT ACROSS JOISTS & WASHER IMPORTANT: HEATER INSTALLATION FOR USE ~ "A WITH PROPANE (BOTTLED) GAS MUST BE MADE BY VA A QUALIFIED L.P. GAS DEALER OR INSTALLER. HE WILL ENSURE THAT PROPER JOINT COMPOUNDS 100,000 THRU ARE USED FOR MAKING PIPE CONNECTIONS; THAT UNIT HEATER 400,000 AIR IS PURGED FROM LINES; THAT A THOROUGH UNIT HEATERS TEST IS MADE FOR LEAKS BEFORE OPERATING *SEE SPEC. CHART HEATER; AND THAT IT IS PROPERLY CONNECTED P. 2 FOR "A" DIM. TO THE NATURAL GAS SUPPLY SYSTEM. "ALL HANGING HARDWARE & WOOD NOT INCLUDED. b. ELECTRICAL CONNECTIONS: (See Figures 7 & Figure 4 — Mounting Heaters 8) . 3. AIR FOR COMBUSTION — Appliances shall be Standard units are shipped for use on 115 volts, PP 60 hertz, single phase electric power. Check installed in a location in which facilities for ven- motor nameplate and electrical rating on tilation permit satisfactory combustion of gas, transformer before energizing unit heater electri- proper venting, and maintenance of ambient tem- cal system. Wiring of unit heater conforms to the perature at safe limits under normal conditions of standard as set forth in ANSI Standard Z83 -8, b. use. Appliances shall be located in such a manner External wiring must conform to National as not to interfere with proper circulation of air within Electrical Code and applicable local codes. It is confined space. When buildings are so tight that nor- recommended that electrical power supply to unit mal infiltration does not meet air requirements, out- heater be provided from a fused, separate, and side air shall be introduced per Sections 1.3.4.2 and permanently live electrical circuit. This unit must 1.3.4.3 of ANSI Z223.1 for combustion requirements. be electrically grounded according to National A permanent opening or openings having a total free Electric Code, ANSI /NFPA No. 70 -1990. See area of not less than one square inch per 5,000 thermostat connections. BTUH of total input rating of all appliances within the The transformer supplied with this unit heater is space shall be provided. internally fused. Any overload or short circuit will 4. Unit heater must be hung level from side to side and ruin the transformer. DO NOT USE A SCREW- front to back, from the two balanced suspension DRIVER ACROSS THE TERMINAL TO CHECK points at top of unit. Two additional stabilizing points FOR POWER. Use a voltmeter. with 9/16" dia. holes are provided on blower housing. WARNING: MAKE CERTAIN THAT THE STRUCTURE c. Venting: (See Figure 6) TO WHICH THE HEATER IS TO BE MOUNTED IS CAUTION: This unit heater is equipped with a CAPABLE OF SAFELY SUPPORTING ITS WEIGHT. blocked vent (spill) shutoff switch. (See Canadian UNDER NO CIRCUMSTANCES MUST THE GAS Installation.) LINES OR THE ELECTRICAL CONDUIT BE USED TO If the venting system becomes blocked or there SUPPORT THE HEATER. FAILURE TO HEED THESE is continuous spillage the vent (spill) shutoff WARNINGS MAY RESULT IN PROPERTY DAMAGE, switch will shut off the unit heater. Before resetting PERSONAL INJURY OR DEATH. the switch check to see if the vent system is When suspension is completed, proceed with the fol- blocked. Remove any blockage. lowing: To reset the switch (which is located in the upper —4— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 Installation (Continued) right side of the draft diverter), push the reset CANADIAN INSTALLATION button after the unit heater has cooled down. The following instructions apply to Canadian installa- NOTE: The switch will not reset hot. tions in addition to installation and operating in- All Unit Heaters must be vented. They should structions: be vented with a UL listed Type B Vent, a factory 1. Installation must conform with local building codes, built chimney, or a lined brick and mortar chim- or in absence of local codes, with current ney that has been constructed in accordance with CAN /CGA/B149.1, Installation Codes for Natural National Building Code. Horizontal section of vent Gas Burning Appliances and Equipment, or connector should slope upwards from the heater CAN /CGA- B149.2, Installation Codes for Propane at the rate of 1/4" per foot of length. Venting Gas Burning Appliances and Equipment. should comply with Section 7, "Venting of Appli 2. Any references to U.S. standards or codes in these ances", of ANSI Z223.1 (Installation of Gas Appli instructions are to be ignored and the applicable ances and Gas Piping). Venting system should be Canadian standards or codes applied. checked to determine whether or not there is ade- quate draft to assure proper venting of the 3. Any references to deration at altitudes in excess of appliance. 2000 feet are to be ignored. When installed in Canada at altitudes of 2000 to 4500 feet, the unit Other considerations to which governing codes heaters must be orificed to 90% of the normal alti- should be applied are: vent clearances from com- tude rating, and be so marked in accordance with bustible materials, vent termination above the the C.G.A. certification. roof, dillution air for venting, and combined vents. 4. Unit heaters are design certified to comply with In buildings where negative pressures are CAN /CGA 2.6. created by exhaust fans or other causes, the 5. In Canada, installation of unit heaters in air lane negative pressure will cause downdraft condi- p tions in a gravity vent. Here "Make -up Air hangars and public garages is acceptable when in Heaters" should be specified. Do not try to use accordance with current CAN/CGA-B149, Installa- Powered Vents to overcome a negative pressure tion Codes for Gas Burning Appliances and problem. Equipment. Diameter of vent pipe from unit heater to stack 6. All electrical connections must be in accordance with should never be less than that of vent outlet in Canadian Electrical Code, Part 1, CSA Standard unit. When a common vent is used for more than C22.1. one unit, refer to NFPA No. 54 for venting design. • 7. For high static units, installation is to be adjusted to *Length of vent pipe from duct furnace to obtain a temperature rise within the range specified stack should be kept at a minimum and on unit heater rating plate. should not exceed 75% of the height of the vertical flue section. Vent pipe should be at 8. The blocked vent (spill) switch may not be on (east 6" from combustible material and should Canadian units. be properly insulated when passing through combustible partitions. Where vent goes directly from unit through roof, the vertical stack should be at least 5' and an approved type weather cap FOR 100,000 BTU and OPTIONAL should be used. Top of vertical stack should be 400,000 BTU MODELS ONLY. at least 21/2 feet above highest point of roof. APPROVED TYPE Responsibility of providing adequate vent rests I I I WEATHER CAP with the installer of this equipment. Ham. _ J .? USE INSULATED �* _. _ ' STACK OUTDOORS — j j THIMBLE 2' /s FT MIN.t ROOF 1 MIN. DISTANCEt 5 FT MIN. DRIP LEG 5 FT. MIN. � � PIPE TO CEILING 6 INCHES FROM �i i r 1 .-1 FT.. 1/41 it" MIN. SLOPE 1/4" TO 1" HEATER 10 FT MAX. * 0 SUGGESTED METHOD FOR INSTALLING TRAP (DRIP LEG) Figure 5 Figure 6 —5— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 Installation (Continued) ■ TO HIGH LIMIT AND BLOCKED \ VENT (SPILL) SWITCH `'% I \ N TO BLOWER ; MOTOR r `, h ' /f . 9 BLACK L - �,9, •o, ©— z TO C/i' \'_ `III j m �� ©- THERMOSTAT I j , I I POWER BLACK �_' � ��� �, P ! I IN BY -` WHIT �� OTHER GREEN � � GREEN � �l GPEEN _ Ilei Je� `, Ity i - jet M 10 , 1\ -(0i: � _„-,146..: s' \ ■ tgibPr' \ GAB �A il Figure 7 — Valve, Transformer and Thermostat Connections TRANSFORMER BLOWER 115- 230/24V MOTOR 0115- 230/1/60 VHITE Le IBLACK OPTIONAL e , J MANUAL 40 U BLACK 8 r. = SUMMER/ . c WINTER L2 VHITE a !•� WITCH R] xi FAN TIME DELAY O TOTSTAT ° I 1 Q l � BLUE SPDT 3 L F FAN TIME DELAY SWITCH HI - LIHIT - O HOT _ seboo 115- 230/1/60 r —1 IGNITER L20 NEUTRAL �� 1 x m� GAS VALVE B 1 = i o�� ° <�E m SPILL n 6 TH-TTR 1p V ; ' ,^ . • •.. \ MOTOR SWITCH 'Vm® j{� 0 .. . 1DT�' — 163 4 2 WHITE . BLUE IA � � n I BLA CK ‘ � goL' 1, - WIRING DIAGRAM FOR BLOWER UNIT HEATERS WITH INTERMITTENT PILOT =�Q �� � / • ■ CAUTION — DISCONNECT POWER BEFORE SERVICING. ,, cr� • UNIT MUST BE GROUNDED. m C? ` �--- ` • USE COPPER CONDUCTORS ONLY. POWER IN b i° © - TO THERMOSTAT • REFER TO INSTALLATION INSTRUCTIONS FOR VENTING, (BY OTHERS) /_ 1 GAS PIPING, AND START -UP PROCEDURES. 1. ® • IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE F APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED A '' TO 24V(1) ON IGNITOR WITH WIRING MATERIAL HAVING A TEMPERATURE RATING TRANSFORMER- F OF AT LEAST 125 °C. HI -LIMIT AND BLOCKED VENT 24 VOLT SIDE TO HIGH LIMIT (SPILL) SWITCH WIRES MIN. 200 °C. LEGEND BY MANUFACTURER BY OTHERS 3184 -1 C100613 2/12/91 Figure 8 — Junction Box Wiring Figure 9 — Schematic Wiring Diagram —6— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 Operation 1. EXPLANATION OF CONTROLS: d. Insert the time required to burn one cubic foot of a. Unit heater is equipped with a dual automatic gas gas in the formula below and compute the input valve and electric ignition device (separate from rate. the gas valve) which provide the following functions: 3600 (Sec. Per Hr.) x Btu /Cu. Ft. = INPUT RATE (1) Pilot solenoid valve is energized and pilot is Time (Sec.) electrically ignited when thermostat calls for heat. EXAMPLE: Assume the Btu content of 1 cubic foot (2) Electronic circuitry proves that pilot flame is of gas equaled 1000 and that it takes 12 established, then energizes main gas sole- seconds to burn one cubic foot of gas. noid valve. 3600 x 1000 (3) When thermostat is satisfied, main gas 12 = 300,000 BTU /HR. solenoid valve and pilot solenoid valve are de- energized, stopping all flow of gas. NOTE: If computation exceeds or is less than 95% of (4) Pilot solenoid valve also functions as a main gas BTU /HR. input rating (see Specifications), adjust gas valve to provide redundancy. gas pressure. (5) Pressure regulator provides proper and steady gas pressure to the main burners. 4. Gas pressure adjustment: (Refer to rating plate on (6) Manual shut -off valve for service and long unit.) term shut -down. Best results are obtained when the unit heater is k b. The limit switch interrupts the flow of electric cur- operating at its full input rating with the manifold rent to the main gas valve in case the heater pressure of 3.5" WC. Adjustment of the Pressure becomes overheated. Regulator is not normally necessary since it is preset c. The fan switch delays the operation of the fan un- at the factory. However, field adjustment may be accomplished as follows: til the heater is warmed; then keeps the fan run- I ning after the gas has been turned off until the use- (1) Attach manometer at pressure tap plug be- ful heat has been removed. The start-up fan delay low control outlet. must not exceed 90 seconds from a cold start. (2) Remove regulator adjustment screw cap, d. The wall thermostat is a temperature sensitive located on combination gas valve. switch which turns the main gas valve on or off (3) With small screwdriver, rotate adjustment to control the temperature of the space being screw counterclockwise to decrease or heated. It must be mounted in the space on a clockwise to increase pressure. vibration -free, vertical surface away from air CAUTION: Do not force beyond stop limits! currents, in accordance with the instructions fur- nished with the thermostat (not standard equip- 5. Ratings of gas appliances are based on sea level ment). operation and need not be changed for operation at 2. INITIAL LIGHTING INSTRUCTIONS: elevations up to 2,000 feet. For operation at eleva- tions above 2,000 feet, input ratings should be a. Open the manual valve supplying gas to the unit reduced at the rate of 4 percent for each 1,000 feet heater and, with the union connection loose, above sea level. purge air from gas line. Tighten union and check for gas leaks. CAUTION: Do not attempt to de -rate heater by install - b. Open manual valve on unit heater. ing blank (undrilled) orifices. This may cause hot c. Turn on electrical power. spots on the heat exchanger and significantly should be under control of thermostat. Turn shorten its life. Holes in the heat exchanger may d. Unit et should be und point and determine that allow harmful combustion products to enter the thermostat and main burners ignite. an dr d thermostat at space being heated. Proper de- rating is accom- p g plished by installing smaller orifices. Contact gas lowest point and determine that pilot and main supplier for correct orifice size. burners are extinguished. e. If pilot adjustment is required, remove pilot ad- 6. After the unit heater has been operating for at least justment seal cap and adjust pilot screw to obtain 15 minutes, adjust the primary air flow to the burners proper flame. Clockwise rotation decreases pilot as follows: Turn friction locked, manually rotated air flame size. Replace cap. shutters clockwise to close; counterclockwise to f. Turn thermostat to desired position. open. 3. Check gas input rate as follows: For correct air adjustment, close air shutter until IMPORTANT: NEVER OVERFIRE THIS UNIT HEATER, yellow tips in flame appear. Then open air shutter to AS UNSATISFACTORY OPERATION OR SHORT LIFE the point just beyond the position where yellow tip - ping disappears. MAY RESULT. a. Turn off all gas appliances that use gas through CAUTION: There may be momentary and spasmodic the same meter p the unit heae orange flashes in the flame. This is caused by the burning of airborne dust particles, and is not to be b. Turn gas on to the unit heater. confused with the yellow tipping, which is a stable c. Clock the time in seconds required to burn one or permanent situation, when there is insufficient cubic foot of gas by checking the gas meter. primary air. —7— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 Operation (Continued) 7. If the thermostat employed has an adjustable heat setting and check system operation; adjust to 0.5 anticipator, adjust anticipator to match current rating setting and recheck, etc., until the desired stamped on the main gas valve (add .4 for fan time "burner -on" time is obtained. If the nominal set - delay relay). Move the indicator on the scale to ting is 0.2, adjust to 0.23 or 0.25 to achieve the correspond with this rating, and the anticipator will desired burner -on time. be properly adjusted for optimum comfort with most b. If the room temperature overshoots the ther- types of heating systems. mostat setting excessively, decreasing the A slightly higher setting to obtain longer "burner -on" "burner -on" time may result in more constant times (and thus fewer cycles per hour) may be temperature. To accomplish this, adjust the an- desirable on some systems. Proceed as follows: ticipator setting from the nominal 0.4 down to 0.35, or from the nominal 0.2 down to 0.18, and a. If the nominal heater setting is 0.4, adjust to 0.45 recheck operation. Maintenance WARNING: DISCONNECT ALL POWER SOURCES proceed as follows: RELATED TO THE INSTALLATION BEFORE SERVIC- a. Remove bottom panel. ING ANY COMPONENT. b. Compress spring by moving burner toward mani- fold, slide opposite end of burner downward from 1. Inspect blower wheel and housing for accumulation locating slot while retaining spring is still of lint or other foreign material. Clean as appropriate compressed. to maintain efficient air flow. c. Pull burner away from heater. 2. Blowers are equipped with permanently lubricated d. To clean burners, remove any dust, dirt or other bearings. No lubrication required. foreign matter, using a wire brush and /or com- 3. For motor lubrication, refer to label on motor. pressed air. Ensure that all ports are unob- 4. To clean or replace main burners, turn off both elec- structed. Inspect and clean pilot if necessary. tric power supply and gas supply to unit heater and 5. Replace all parts in reverse order. I ) s - �' f 4 .r.,. t ,r "%; 1 / ., BLOWER o `°'' ,, # `, ....":,4 d GAS u i . VALVE ff 1 • *AIR SHUTTERS r —....� k OKs f� _ �.- -- ELECTRICAL MANIFOLD g i '.: p , LOWER r I a 1 PORTION i',094 = -`r OF 4 a ,4 ' BURNER .11111 r 5 ( *)AIR SHUTTER IS il „ * � ` THE UPPER HALF • '''''''-'7':,," W OF DISC. • r0' NOTE: BOTTOM PANEL NOT . t ,t �~ �' REMOVED. SHOWN: HAS BEEN Figure 10 —8— FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 r r •»x '- -' ' x x s" , m ' r', 9 a' ,• r" riff , T, _ - - a ' ,-. ' -� " -;- �y .. ....r . w , k i , -- ',,,,,;: i - ;,„, _,,,,, -i. - , ,,,, ,, .; - ,,,... .. - ,,,,,, 'r3ORIFICE BURNER , i MANIFOLD , , .� _ RETAINING t SPRING s • E�� ',„,• ,�� • , AIR , t '� :£ i SHUTTERS ° - �' ' „4'�''�, , ,;. -� L PILOT S :4 '" BURNER PILOT TUBING MAIN ,` , S~, - , . -:',-Ni-,-;;', ` ti • ems i n ;•; � . BURNER '. S . iE 7Q , ,yf '-',.:,V7-4 j, 3' .✓ '^ Figure 11 Troubleshooting Chart SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Flame lifting from 1. Pressure regulator set too high. 1. Reset manifold pressure. Refer to burner ports "Operation ". 2. Defective regulator. 2. Replace regulator section of combi- nation gas valve or complete valve. 3. Burner orifice too large. 3. Check with local gas supplier for proper orifice size and replace. Refer to "Operation ". Flame pops back. 1. Excessive primary air. 1. Close air shutter. Refer to "Opera- tion ". 2. Burner orifice too small. 2. Check with local gas supplier for proper orifice size and replace. Re- fer to "Operation ". I' Noisy flame. 1. Too much primary air. 1. Close air shutter. 2. Noisy pilot. 2. Reduce pilot gas. Refer to "Opera- tion". 3. Irregular orifice causing whistle or 3. Replace orifice. resonance. 4. Excessive gas input. 4. Reset manifold pressure. Replace regulator section of combination gas valve or complete valve. Check with local gas supplier for proper orifice size and replace. Refer to "Operation ". Yellow tip flame 1. Insufficient primary air. 1. Open air shutters. Refer to "Opera - (some) yellow tipping tion ". -- on propane gas is 2. Clogged main burner ports. 2. Clean main burner ports. permissible). 3. Misaligned orifices. 3. Replace manifold assembly. 4. Clogged draft hood. 4. Clean draft hood. 5. Air shutter tinted. 5. Check for dust or lint at air mixer opening and around the air shutter. 6. Insufficient combustion air. 6. Clean combustion air inlet openings in bottom panel, see "Installation" —9— FORM 5S2485 MODELS 3E389B THRU 3E392B 1 08262 Troubleshooting Chart SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Floating flame 1. Blocked heat exchanger 1. Clean heat exchanger 2. Insufficient combustion air 2. Clean combustion air inlet openings in bottom panel. Refer to "Installation" 3. Blocked venting 3. Clean flue. Refer to "Installation" 4. Air leak into combined chamber, 4. Determine cause and repair draft hood accordingly Gas odor 1. Shut off gas supply immediately 1. Inspect all gas piping and repair 2. Blocked heat exchanger 2. Clean heat exchanger 3. Drafts around heater 3. Eliminate drafts. Refer to "Installation" 4. Negative pressure in building 4. See "Installation" 5. Blocked draft hood 5. Clean draft hood Delayed ignition 1. Excessive primary air 1. Close air shutter. Refer to "Operation" 2. Main burner ports clogged near pilot 2. Clean main burner ports 3. Pressure regulator set too low 3. Reset manifold pressure. Refer to "Operation" 4. Pilot decreases in size when main 4. Supply piping is inadequately sized. burners come on Refer to "Installation" 5. Pilot flame too small 5. Clean pilot orifice. Refer to "Operation" 6. Drafts around heater 6. Eliminate drafts. Refer to "Installation" 7. Improper venting 7. Refer to "Installation" Main burners will not 1. Main gas off 1. Open all manual gas valves light 2. Lack of power at unit 2. Replace fuse or turn on power supply 3. Thermostat not calling for heat 3. Turn up thermostat 4. Defective limit switch 4. Check limit switch with continuity tester. If open, replace limit switch 5. Improper thermostat or transformer 5. Check wiring per diagrams wiring at gas valve 6. Tripped blocked vent (spill) switch 6. Check blocked vent (spill) switch and reset. See Venting 7. Defective gas valve 7. Replace gas valve 8. Defective thermostat 8. Check thermostat and replace if defective 9. Defective transformer 9. Be sure 115 volts is supplied to the transformer primary; then check for 24 volts at secondary terminal before replacing 10. Loose wiring 10. Check and tighten all wiring con- nections per diagrams 11. Defective ignition control 11. Replace - 10 - FORM 5S2485 08262 MODELS 3E389B THRU 3E392B Troubleshooting Chart (Continued) SYMPTOM POSSIBLE CAUSES(S) CORRECTIVE ACTION Condensation of Improper venting. Refer to "Installation ". water vapor. Burner won't turn off. 1. Poor thermostat location. 1. Relocate thermostat away from drafts. 2. Defective thermostat. 2. Replace thermostat. 3. Improper thermostat or transformer 3. Check wiring per diagrams. wiring at gas valve /igniter. 4. Short circuit. 4. Check operation at valve. Look for short and correct, such as staples piercing thermostat wiring. 5. Defective or sticking gas valve. 5. Replace gas valve. 6. Excessive gas supply pressure. 6. Refer to "Operation ". Rapid burner cycling. 1. Draft on pilot. 1. Eliminate drafts. Refer to "Instal- lation". 2. Defective igniter control. 2. Replace igniter. 3. Loose electrical connections at gas 3. Tighten all electrical connections. valve, igniter, pilot, or thermostat. 4. Excessive thermostat heat anticipa- 4. Adjust thermostat heat anticipation tion. for longer cycles. Refer to "Opera- tion ". 5. Fan motor turning too slowly. 5. Clean blower wheel and housing, check voltage to blower motor (should be 115 VAC). Refer to "Maintenance ". 6. Poor thermostat location. 6. Relocate thermostat (Do not mount thermostat on unit). Noisy. 1. Blower wheel loose. 1. Replace or tighten. 2. Blower wheel dirty. 2. Clean blower wheel. 3. Pulleys loose. 3. Replace or tighten. — 11 — FORM 5S2485 MODELS 3E389B THRU 3E392B 1 08262 Troubleshooting Chart (Continued) LIMIT - FAN SWITCH - AUTOMATIC PILOT - AUTOMATIC VALVE - FAN OPERATION SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Pilot will not light or 1. Main gas off 1. Open all manual valves will not stay lit 2. Improper spark gap at pilot 2. Adjust to 0.10 -inch 3. Defective spark cable 3. Replace 4. Defective gas valve /igniter control 4. Replace 5. Pilot adjustment screw on automatic 5. Increase size of flame. Refer to gas valve turned too low "Operation" 6. Air in gas line 6. Disconnect pilot line from the pilot burner. Bleed air from the gas supply line. 7. Incorrect lighting procedure 7. Follow lighting instructions adjacent to gas valve 8. Dirt in pilot orifice 6. Remove pilot orifice. Clean with compressed air or solvent. (Do not ream) 9. Extremely high or low gas pressure 9. Refer to "Operation" 10. Bent or kinked pilot tubing 10. Replace pilot tubing 11. Drafts around unit 11. Eliminate drafts. Refer to "In- stallation" Blower will not run 1. Loose wiring 1. Check and tighten all wiring connec- tions per diagrams 2. Defective motor overload protector or 2. Replace motor defective motor 3. Defective fan switch 3. Check for 24V across "H" terminals on fan time delay switch. If 24V is present, jumper terminal numbers 1 and 3. If motor runs, replace fan time delay switch. If 24V is not present, check wiring per diagrams Blower motor turns 1. Fan switch heater element improperly 1. Be sure fan switch heater terminals on and off while wired A & B are connected to gas valve burner is operating per diagrams 2. Defective fan switch 2. Replace fan switch 3. Motor overload protector cycling on 3. Check motor amps against motor and off nameplate rating, check voltage, replace fan motor if defective 4. Motor not properly oiled 4. Oil motor Blower motor will not 1. Improperly wired fan control 1. Check all wiring at fan switch and top stop of gas valve against diagrams 2. Pilot not lit while thermostat calls for 2. Light pilot heat 3. Defective fan switch 3. Replace fan switch -12- FORM 5S2485 I MODELS 3E389B THRU 3E392B 08262 i Troubleshooting Chart (Continued) POOR HEATING RESULTS SYMPTOM POSSIBLE CAUSES(S) CORRECTIVE ACTION Not enough heat. 1. Incorrect gas input. 1. Refer to "Operation ". 2. Heater undersized. 2. This is especially true when . the heated space is enlarged. Have the heat Toss calculated and compare to the heater output (80% of input). Your gas supplier or installer can furnish this information. If heater is undersized, add additional heaters. 3. Thermostat malfunction. 3. Replace thermostat. 4. Heater cycling on limit control. 4. Check air movement through heat exchanger. Check voltage to motor. Clean. Too much heat. 1. Thermostat malfunction. 1. Replace thermostat. 2. Heater runs continuously. 2. Check wiring per diagrams. Check operation at valve. Look for short and correct, such as staples pierc- ing thermostat wiring. Replace gas valve. Refer to "Operation ". Cold air is delivered Fan switch heater element improperly Be sure fan switch heater terminals on start up. wired. A &B are connected to gas valve per diagrams. Cold air is deliv- 1. Incorrect manifold pressure or 1. Refer to "Operation ". ered during heater input. operation. 2. Voltage to unit too high. 2. Check motor voltage with fan run- ning. Should be 115 volts AC. —13— 1 FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 0 ORDER REPLACEMENT PARTS BY CAL.UNG TOLL FREE 10 0 :s 1- 800 - 323 -0620 0 ' / '� 01 Please provide following information: Address parts correspondence to: r/ r/ / r /' ' 1 0 10 '/ , • • Model Number 101 1 1 1 / / I Dayton Electric Mfg. Co. ✓ 10 1 r/ / 1 1/ • Serial Number (if any) J 1 0 r/ • Part Description and Number 1250 Busch Parkway ✓to r// / toe 1 /1/1/ 1 1 /1/ 4 as shown in Parts List. Buffalo Grove, IL 60089 /r / /1/ / 1 � 1 /I0 0 101 / 1/7 /1/ 1 / 1/ I/ / 1 /10 1/ /1/ t 10 MODELS 12 �� �� Z/ (0 J/ 5 - _ 4 3E389B & 3E390B t�A0,1,-A ► J i (1„..7,• 1 1 'Us - 1. 411111111111144, 0 I A Fillti z _ / s o l *M-0.-----.. >A do . Ca --•••• , -' (li 8 x ' - 14 _d K k _v___„.... %mill • 7, il 5 ....._ __:. „ P 1% MODELS t I -uu= r, -� O� • 3E391 B & 3E392B 7 • A 11 PARTS USED ON 100 THRU 200 225 THRU 400 ...1 ∎ V∎1. NAT NAT 4 4 8 9 10 10 10 COMMON 11 11 12 12 13 13 19 19 ,,,` 24 1 5* BLOWER i� \ - s , I '` r. 18 '... % , ..." t �. 2 Li :\ 22 / 111 ill . 1 -- 9 ---716 ''''''V.' . II , ...../ 1. BLOWER � \ _J , . ( 16 BAFFLE i Ali <12 1 17 • 4 M;, \ / 23 20 ��� / �./ 3 a ( *) 2 REQD. FOR MODELS 3E391 B & 3E392B Figure 12 — Replacement Parts Illustration — 14 — FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 a Replacement Parts List FOR SIZES (MBTU) 100 200 300 400 REF NO. DESCRIPTION 3E389B 3E390B 3E391 B 3E392B 1 Heat exchanger (only) 20004 20008 20012 20016 2 Draft diverter 20304 20308 20312 20316 3 Burner drawer 20504 20508 20512 20516 4 Main gas valve 21501 21501 21502 21502 5 Sensor lead 21514 21514 21514 21514 6 Igniter 21506 21506 21506 21506 7 Pilot burner ass'y 21512 21512 21512 21512 8 Burner spring set 21081 A 21085 21088 21090 9 Burner orifice set 21052 21056 21059 21061 10 Main burner set 21018 21022 21025 21027 11 Air shutter set 21093A 21097 21100 21102 12 Burner manifold 21110 21114 21117 21119 13 Transformer. and 4X746 4X746 4X746 4X746 mounting plate 40 Va. 4X748 4X748 4X748 4X748 14 Pilot tubing 21515 21515 21515 21515 15 *tBlower ass'y complete 24300 24302A 24304 24305A 16 Blower wheel 24306 24308A 24307B* 24308E* 17 Blower housing 24309 24311 A 24310B* 24311 E* 18 Blower motor, 115V 24312 24315 24315C 24316A 19 V -belt 24317 24321 24324 24326 20 Blower shaft 24327 24329A 24330 24331 A 21 Bearing set 24332 24333A 24334 24335A 22 Drive pulley 24336 24337A 24337D 24337F 23 Driven pulley 24338 24339A 24338C 24339E 24 Blocked vent (spill) switch 21126 21126 21126 21126 ** Fan time delay 21121 21121 21121 21121 A Belt guard 24340 24342A 24341 B 24342E A Rear blower panel 24343 24347 NA NA A Rear blower mounting panel ass'y NA NA 24350 24352 A Louver spring set 25004 25008 25012 25016 A Louver horiz. set 25104 25108 25112 25116 A Right side panel 25204R 25208R 25212R 25216R A Left side panel 25204L 25208L 25212L 25216L A Bottom panel 25304 25308 25312 25316 A High limit switch 21120 21120 21120 21120 NA = Not applicable ( *) Two required per unit. ( * *) Fan time delay switch is located inside junction box (see Figure 8). (t) Contains 2 housings, 2 wheels, 1 shaft and 1 bearing set. (0) Not — 15 — FORM 5S2485 MODELS 3E389B THRU 3E392B 08262 ORIFICE SCHEDULE TYPE OF GAS NATURAL ORDER REPLACEMENT PARTS INPUT BTU VALUE 1075 BY CALLING TOLL FREE IN MANIFOLD NO. OF 1 - 800 - 323 - 0620 1000 BTU PRESSURE IN 3 BURNERS Please provide following information: INCHES WATER • Model Number 100 Cu. Ft /Hr 96 4 • Serial Number (if any) Orifice drill 42 • Part Description and Number k 200 Cu. Ft /Hr 186 8 as shown in Parts List. Orifice drill 42 Cu. Ft /Hr 280 Address parts correspondence to: 300 Orifice drill 42 12 Dayton Electric Mfg. Co. 1250 Busch Parkway 400 Cu. Ft /Hr 372 16 Buffalo Grove, IL 60089 Orifice drill 42 LIMITED WARRANTY DAYTON ONE -YEAR LIMITED WARRANTY. Fuel - trimmer blower type gas unit heaters with electronic ignition, Models 3E389B thru 3E392B, are warranted by Dayton Electric Mfg. Co. (Dayton) to the original user against defects in workmanship or materials under normal use for one year after date of purchase with an extended 9 -year warranty on the heat exchanger, draft diverter and burner. This warranty does not cover damages caused by operating the unit in a corrosive atmosphere containing chlorinated or halogenated hydrocarbon vapors or any other damaging chemical compounds. Any part which is determined by Dayton to be defective in material or workmanship and returned to an authorized service location, as Dayton designates, shipping costs prepaid, will be, as the exclusive remedy, repaired or replaced at Dayton's option. For limited warranty claim procedures, see PROMPT DISPOSITION below. This limited warranty gives purchasers specific legal rights which vary from state to state. LIMITATION OF LIABILITY. To the extent allowable under applicable law, Dayton's liability for consequential • and incidental damages is expressly disclaimed. Dayton's liability in all events is limited to, and shall not exceed, the purchase price paid. WARRANTY DISCLAIMER. Dayton has made a diligent effort to illustrate and describe the products in this literature accurately; however, such illustrations and descriptions are for the sole purpose of identification, and do not express or imply a warranty that the products are merchantable, or fit a particular purpose, or that the products will necessarily conform to the illustrations or descriptions. Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in "LIMITED WARRANTY" above is made or authorized by Dayton. PRODUCT SUITABILITY. Many states and localities have codes and regulations governing sales, construction, installation, and /or use of products for certain purposes, which may vary from those in neighboring areas. While Dayton attempts to assure that its products comply with such codes, it cannot guarantee compliance, and cannot be responsible for how the product is installed or used. Before purchase and use of a product, please review the product application, and national and local codes and regulations, and be sure that the product, installation, and use will comply with them. Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you; (b) also, some- states do not allow limitations on how long an implied warranty lasts, consequently the above limitation may not apply to you; and (c) by law, during the period of this Limited Warranty, any implied warranties of merchantability or fitness for a particular purpose applicable to consumer products purchased by consumers, may not be excluded or otherwise disclaimed. PROMPT DISPOSITION. Dayton will make a good faith effort for prompt correction or other adjustment • with respect to any product which proves be defective within limited warranty. For any product believed to be defective within limited warranty, first write or call dealer from whom product was purchased. Dealer will give additional directions. If unable to resolve satisfactorily, write to Dayton at address below, giving dealer's name, address, date and number of dealer's invoice, and describing the nature of the defect. Title and risk of loss pass to buyer on delivery to common carrier. If product was damaged in transit to you, file claim with carrier. Manufactured for Dayton Electric Mfg. Co., 5959 W. Howard St., Chicago, IL 60648