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Sterling RF-75 User's Manual

1. H 8 TD 10 CLEARANCE BE AS SPECIFIED 203 254MM ON TENT PIPE MAXIMUM Pii pia VENT PIPE DIAMETER SEE SPECIFICATION TABLE 1 SEAL JOINT BETWEEN SINGLE WALL VENT 19 AND THE p VENT AND THE ANNULAR SPACE VENT OPERATION POWER VENTED PROPELLER UNITS DIRECT SPARK IGNITION EXPLANATION OF CONTROLS See Figure 20 1 EachUnit Heater comes equipped with a power vent System that consists of a power venter motor and blower pressure switch and sealed flue collector in place of the conventional draft diverter The power venter motor is energized by the room thermostatthrough the integrated control board when a demand for heat is sensed The pressure switch measures the flow through the vent system and energizes the direct spark ignition system beginning the pre purge timing when the flow is correct A WARNING The pressure switch MUST NOT be bypassed The unit MUST NOT be fired unless the power venter is operating An unsafe condition could result The direct ignition system consists of an ignition control module and a gas valve When the pre purge period ends the spark ignition system is energized and the gas valve opens to supply gas to the burners When the thermostat is satisfied the vent system is de energized and the valve closes to stop the flow of gas to the unit The limit switch interrupts the flow of electric current to the control board
2. standards or codes applied Any reference to U S standards or codes in these instructions are to be ignored and the applicable Canadian ANSI now organizes vented appliances into four categories VENTING Category I Includes non condensing appliances with negative vent Category III Appliances are non condensing and operate with a positive vent Venting Categories pressure like the traditional pressure atmospheric unit heater UM Condensing E Category IV Negative Category II Covers condensing appliances Vent I I e 2 appliances with positive vent pressure ME NOTICE Category II and IV do T ig not apply to equipment specified Pul within this manual ressure VERTICALLY VENTED UNIT HEATERS CATEGORY 1 Observe the following precautions when venting the unit 4 Use as few elbows as possible The unit heater shall be connected to a factory built 5 Tape flue pipe joints with high temp RTV or foil chimney or vent complying with a recognized standard face tape or a masonry or concrete chimney lined with a lining 6 Avoid running vent pipe through unheated spaces material acceptable to the authority having jurisdiction 7 When this cannot be avoided insulate the pipe to Venting into an unlined masonry chimney is prevent condensation of moisture on the walls of prohibited the pipe Insulate vent pipe runs longer than 10 feet 1 Use flue pipe of the sam
3. 130 1 Determine the required Cu Ft Hr by dividing the input by 1000 For SI Metric measurements Convert BTU Hr to kilowatts Multiply the units inputs KW by 0 0965 to determine Cu Meters Hr 2 FOR NATURAL GAS Select pipe size directly from the table 3 FOR PROPANE GAS Multiply the Cu Ft Hr value by 0 633 then use the table 4 Refer to the metric conversion factors listed in the General Safety section for SI Unit measurement conversions PIPE INSTALLATION 1 Install the gas piping in accordance with applicable local codes 2 Check gas supply pressure Each unit heater must be connected to a gas supply capable of supplying its full rated capacity as specified in Table 3 A field LP tank regulator must be used to limit the supply pressure to a maximum of 14 in W C 3 5 kPa All piping should be sized in accordance with the latest edition of ANSI Standard Z223 1 National Fuel Gas Code in Canada according to CGA B149 See Tables 1 amp 2 for correct gas piping size and also refer to Tables 3 5 and 6 If gas pressure is excessive on natural gas applications install a pressure regulating valve in the line upstream from the main shutoff valve 3 Adequately support the piping to prevent strain on the gas manifold and controls 4 To prevent the mixing of moisture with gas run the take off piping from the top or side of the main 5 Standard Unit Heaters are supplied with a combination valve which includes
4. ANY PARTS THEREOF FOUND TO BE DEFECTIVE THIS LIMITED WARRANTY GIVES THE ORIGINAL OWNER OF THE PRODUCT SPECIFIC LEGAL RIGHTS YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY BY JURISDICTION In the interest of product improvement we reserve the right to make changes without notice 29 GAS EQUIPMENT START UP Customer Job Name amp Number PRE INSPECTION INFORMATION With power and gas off Type of Equip Unit Heater Serial Number Model Number Name Plate Voltage Name Plate Amperage Type of Gas Natural LP Tank Capacity Ibs Rating F kg kw C o Are all panels doors vent caps in place o Has the unit suffered any external damage Damage 1 Does the gas piping and electric wiring appear to be installed in a professional manner Has the gas and electric been inspected by the local authority having jurisdiction Is the gas supply properly sized for the equipment Were the installation instructions followed when the equipment was installed o Have all field installed controls been installed 1 Do you understand all the controls on this equipment f not contact your wholesaler or DO NOT START this equipment unless you fully understand the controls GENERAL GAS HEATING With power and gas off With power and gas on Make certain all packing has been removed Inlet gas pressure in W C or kPa o Tighten all electrical terminals and connections Burner ignition 1 Check all
5. Terminal Block Plate 13 High Limit Switch w Mounting Bracket 14 Fan Motor 15 OSHA Fan Guard 16 Standard Fan 17 Fan Guard Motor Mount Hardware Kit 18 Flue Collector 19 Power Venter Drafter Ass y 20 Flue Collar Ass y 21 Vinyl Tubing Pressure Switch 22 Power Venter Mounting Plate 23 Louver 24 Louver Spring 25 Control Board 26 Service Panel 27 Top Jacket Panel w Insulation 27 Bottom Jacket Panel w Insulation 29 Front Jacket 30 Rear Jacket 31 Front Hanger 31 Rear Hanger 32 Tube Support Bracket 33 Green Ground Screw 06931 27 The orifices shown are for units operating at normal altitudes of O to 2000 ft 610m When replacing a flue collector make sure that the flue collector box is sealed completely to the vestibule panel using RTV Sealant IDENTIFICATION OF PARTS RESIDENTIAL TUBULAR 30 90 MBH UNIT SIZES Figure 21 Propeller Parts Figure 22 Component Parts Fan Guard Motor D4791 Hardware D4430 NOTE No rubber grommets are equipped with the 30 and 45 unit sizes Gas Valve Figure 23 Internal Furnace Components Figure 24 Power Ventor Assembly Unit Tube Size Quant _ 30 MB 2 kuar 877 45 MB 3 60 M B 4 Tube 75 MBH 3 90 MB 9 Vestibule D4809B
6. 25 000 hours of operation b Average Duty Annually after 3 years or 8 000 hours of operation c Heavy Duty Annually after 1 year or at least 1500 hours of operation A CAUTION Never over oil the motor or premature failure may occur 14 Check and test the operational functions of all safety devices supplied with your unit Table 7 Tubular Propeller Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION A Flame pops back 1 Burner orifice too small 1 Check with local gas supplier for proper orifice Size and replace Refer to Operation B Noisy Flame 1 Irregular orifice causing whistle or resonance 1 Replace orifice 2 Excessive gas input 2 Test and reset manifold pressure C Yellow tip flame some yellow 1 Clogged main burners 1 Clean main burner ports tipping on LP gas is permissible 2 Misaligned orifices 2 Replace manifold assembly 3 Insufficient combustion air 3 Insufficient combustion air 4 Possibly over fired 4 Check gas input and manifold pressures D Floating flame 1 Blocked venting 1 Clean Flue Refer to Installation 2 Insufficient combustion air 2 Clean combustion air inlet openings 3 Blocked heat exchanger 3 Clean heat exchanger Refer to Installation 4 Air leak into combustion chamber 4 Determine cause and repair accordingly or draft hood E Gas odor 1 Shut off gas supply immediately 1 Ins
7. 3 4 17 3 4 17 3 4 305 305 451 451 451 B Overall Height 13 13 18 3 4 18 3 4 18 3 4 330 330 476 476 476 C Overall Depth 25 1 2 25 1 2 26 3 4 26 3 4 26 3 4 648 648 679 679 679 Center Line Height of Flue 7 1 4 7 1 4 10 1 2 10 1 2 10 1 2 184 184 267 267 267 Center Line Electric Connection 10 1 4 10 1 4 16 16 16 260 260 406 406 406 F Discharge Opening Height 10 1 2 10 1 2 16 1 4 16 1 4 16 1 4 267 267 413 413 413 G Fan Diameter in 10 10 16 16 16 Unit Weight Ibs 62 68 87 93 95 kgs 28 31 39 42 43 Shipping Weight Ibs 72 78 102 108 110 kgs 33 35 46 49 50 For all installations the flue collar is included with the unit and should be field installed per the instructions included with the unit t Ratings shown are for unit installations at elevations between 0 and 2 000 ft 0 to 610m For unit installations in U S A above 2 000 ft 610m the unit input must be derated 4 for each 1 000 ft 305m above sea level refer to local codes or in absence of local codes refer to the latest edition of the National Fuel Gas Code ANSI Standard Z223 1 N F P A No 54 also refer to Table 6 For installations in Canada any reference to deration at altitudes in excess of 2 000 ft 610m are to be ignored At altitudes of 2 000 ft to 4 500 ft 610 to 1372m the unit must be derated to 90 of the normal altitude rating and be so marked in accordance with
8. Construction 16 to 24 21 172 406 to 610mm 546mm Refer to Figures 3 4 and 5 for Joist Centers suspension of units Joist Log Bolt M de me a ond Washer a Rear View Side View 6 GAS PIPING A WARNING A WARNING To avoid damage or possible personal injury do not connect gas piping to this unit until a supply line pressure leak test has been completed Connecting the unit before completing the pressure leak test may damage the unit gas valve and result in a fire hazard Do not rely on a shut off valve to isolate the unit while conducting gas pressure leak tests These valves may not be completely shut off exposing the gas valve to excessive pressure and damage PIPE SIZING To provide adequate gas pressure to the gas unit heater size the gas piping as follows 1 Find the cu ft hr by using the following formula Cu fci 2 Refer to Table 2 Match Length of Pipe in Feet with appropriate Gas Input Cu Ft Hr figure This figure can then be matched to the pipe size at the top of the column Example It is determined that a 67 foot 20 4m run of gas pipe is required to connect a 75 MBTU gas unit heater to a 1 000 BTU cu ft 0 29kW natural gas supply 75 000 BTU Hr 1 000 BTU cu ft Using Table 2 a 3 4 inch pi
9. Inspect your venting system to ensure adequate ventilation exists at all times Failure to heed these warnings could result in Carbon Monoxide Poisoning symptoms include grogginess lethargy inappropriate tiredness or flu like symptoms When an existing heater is removed or replaced in venting system the venting system may not be properly sized to vent the attached appliances An improperly sized vent system can cause formulation of condensate or leakage or spillage of flue gases The following steps shall be followed with each appliance connected to the venting system placed in operation while any other appliances connected to the venting system are not in operation 1 Seal any unused openings in the venting system 2 Inspect the venting system for proper size and horizontal pitch as required in the National Fuel Gas Code ANSI Z223 1 and these instructions Determine that there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition In so far as practical close all building doors and windows and all doors between the space in which the appliance s connected to the venting system are located and other spaces of the building Turn on clothes dryers and any exhaust fans such as range hoods and bathroom exhausts so they shall operate at maximum speed Do not operate a summer exhaust fan Close fireplace damper 4 Follow the lighting instructions Place the appliance bein
10. S DSLPRFM 1 J30 06933 Rev A INSTALLATION INSTRUCTIONS AND PARTS LIST TUBULAR GAS FIRED DIRECT SPARK PROPELLER UNIT HEATERS FOR RESIDENTIAL INSTALLATIONS ATTENTION READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE ATTEMPTING TO INSTALL OPERATE OR SERVICE THESE UNITS CHECK UNIT DATA PLATE FOR TYPE OF GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT THE POINT OF INSTALLATION RECORD THE UNIT MODEL AND SERIAL No s IN THE SPACE PROVIDED RETAIN FOR FUTURE REFERENCE Model No Serial No FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance FOR YOUR SAFETY WHAT TO DO IF YOU SMELL GAS WERTE Do nottry to light any appliance Do not touch any electrical switch do H not use any phone in your building Immediately call your gas supplier C US neighbor s phone Follow the Listed gas supplier s instructions If you cannot reach your gas supplier call your fire department AWARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instruction thoroughly before installing or servicing this equipment APPROVED FOR USE IN CALIFORNIA AWARNING Install operate and maintain unit in accordance with t
11. a Manual A valve b Manual valve c Solenoid valve d Pressure regulator Pipe directly into the combination valve see Figure 6 6 Gas valve has a pressure test post requiring a 3 32 hex head wrench to read gas supply and manifold pressures Open 1 4 turn counterclockwise to read turn clockwise to close and reseat A 5 16 ID hose fits the pressure post 7 Provide a drip leg in the gas piping near the gas unit heater A ground joint union and a manual gas shutoff valve should be installed ahead of the unit heater controls to permit servicing The manual shutoff valve must be located external to the jacket See Figure 6 8 Make certain that all connections have been adequately doped and tightened Table 3 Gas Piping Requirements SINGLE STAGE GAS PIPING REQUIREMENTS GasType Natural Gas Propane LP Gas Manifold 3 5 in W C 10 0 in W C Pressure 0 9 kPa 2 5 kPa 14 0 in W C Max 14 0 in W C Max Supply Inlet 3 5 kPa 3 5 kPa Pressure 5 0 in W C Min 11 0 in W C Min 1 2 kPa 2 7 kPa For single stage application only at normal altitudes A CAUTION Do not over tighten the inlet gas piping into the valve This may cause stresses that will crack the valve NOTICE Use pipe joint sealant resistant to the action of liquefied petroleum gases regardless of gas conducted A WARNING Check all pipe joints for leakage using a soap solution or other approved
12. amp Specification Data 4 GENERAL SAFETY INFORMATION Installation 2 3 Special Precautions 2 3 INSTALLATION Locating Units 5 6 Combustion 5 6 Proper Clearances 5 6 Suspension of Units 2 5 6 Gas Supply 7 8 ELECTRICAL CONNECTIONS 9 10 VENTING 11 12 13 14 15 16 17 18 19 OPERATION Explanation of Controls and Operation 20 Main Burner Orifice Schedule 21 Adjustments 21 High Altitude Operation 21 22 MAINTENANCE Servicing amp Cleaning 22 TROUBLESHOOTING GUIDE 23 24 25 26 IDENTIFICATION OF 27 28 WARRANT Y sits cases ute re eee exp ERR 29 INSPECTION SHEET et tena 30 NOTICE It is the equipment owners responsibility to provide any scaffolding or other apparatus required to perform emergency service or annual periodic maintenance to this equipment DESCRIPTION The Residential Tubular Gas Fired Unit Heater is a factory assembled p
13. surface free from air currents and in accordance with the furnished instructions Mount the thermostat approximately 5 feet 1 5m above the floor in an area where it will be exposed to a free circulation of average temperature air Always refer to the thermostat instructions as well as our unit wiring diagram and wire accordingly Avoid mounting the thermostat in the following locations 1 Cold Areas Outside walls or areas where drafts may affect the operation of the control 2 Hot Areas Areas where the sun s rays radiation or warm air currents may affect the operation of the control 3 Dead Areas Areas where the air cannot circulate freely such as behind doors or in corners THERMOSTAT HEAT ANTICIPATOR ADJUSTMENTS The initial heat anticipator setpoint should equal the thermostat s current amperage draw when the unit is firing This setpoint should be measured for the best results Use the recommended ranges for a guide If further information is needed consult your thermostat manufacturer s instructions Recommended heat anticipator setting Unit Size 30 thru 200 250 thru 400 For Tubular Units 0 35 Amps 0 65 Amps NOTICE The start up fan delay should not exceed 30 seconds from a cold start IMPORTANT For all wiring connections refer to the wiring diagram shipped with your unit either affixed to the side jacket or enclosed in the installation instructions envelope Should any original wire supp
14. to diagram check for 24V at gas valve terminals during trial for ignition period if present and valve does not open Replace valve H Condensation 1 Improper venting 1 Refer to Installation Venting 2 Unit under fired 2 Check gas supply pressures to unit Refer to Installation 3 Building too cold 3 Refer to Installation 23 Table 7 Tubular Propeller Troubleshooting Guide continued SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION 1 Burners will not shut off Thermostat located incorrectly Relocate thermostat away from outside wall or drafts 2 Improper thermostat wiring 2 Check thermostat circuit for open and close on terminal strip on heater R and W 3 Shorted circuit 3 Check thermostat circuit for shorts staples piercing wires 4 Defective sticking gas valve 4 Check for 24v on gas valve terminals when thermostat is not calling 5 Excessive gas supply pressure 5 Refer to Installation J Rapid burner cycling 1 Loose electrical connections at thermostat 1 Tighten all electrical connections or gas valve 2 Adjust heat anticipator setting for longer 2 Excessive thermostat heat cycles Refer to Electrical Connections anticipator setting 3 Check for proper air supply across heat 3 Unit cycling on high limit exchanger and proper gas supply 4 Poor thermostat location 4 Relocate thermostat K Noisy power ventor 1 Pow
15. 0 97 82 73 66 61 57 53 50 44 40 37 35 4 96 3 40 2 75 2 32 2 07 1 87 1 73 1 61 1 50 1 42 1 25 1 13 1 05 0 99 3 4 0 824 360 250 200 170 151 138 125 118 110 103 93 84 7T 72 10 2 7 08 5 66 4 81 4 28 3 91 3 54 3 34 3 11 2 92 2 63 2 38 2 18 2 04 1 1 049 680 465 375 320 285 260 240 220 205 195 175 160 145 135 19 3 13 2 10 6 9 06 8 07 7 36 6 80 6 23 5 80 5 52 4 96 4 53 411 3 82 11 4 1 380 1400 950 770 660 580 530 490 460 430 400 360 325 300 280 39 6 26 9 21 8 18 7 16 4 15 0 13 9 13 0 12 2 11 3 10 2 9 20 8 50 7 93 1 1 2 1 610 2100 1460 1180 990 900 810 750 690 650 620 550 500 460 430 59 5 41 3 33 4 28 0 25 5 22 9 21 2 19 5 18 4 17 6 15 6 14 2 13 0 12 2 2 2 067 3950 2750 2200 1900 1680 1520 1400 1300 1220 1150 1020 950 850 800 112 77 9 62 3 53 8 47 6 43 0 39 6 36 8 34 5 32 6 28 9 26 9 24 1 22 7 21 2 2 469 6300 4350 3520 3000 2650 2400 2250 2050 1950 1850 1650 1500 1370 1280 178 123 99 7 85 0 75 0 68 0 63 7 58 0 55 2 52 4 46 7 42 5 38 8 36 2 3 3 068 11000 7700 6250 5300 4750 4300 3900 3700 3450 3250 2950 2650 2450 2280 311 218 177 150 135 122 110 105 97 7 92 0 83 5 75 0 69 4 64 6 4 4 026 23000 15800 12800 10900 9700 8800 8100 7500 7200 6700 600 5500 5000 4600 651 447 362 309 275 249 229 212 204 190 170 156 142
16. 3 Figure 13 Category I Horizontal Venting Requirements Extension Distance from Wall Approved Vent Terminal T Minimum Vertical Rise Maximum Horizontal Vent Length Vertical Extension Condensate Drain with Trap Listed Pipe sloped down 1 4 inch per foot toward terminal end Thimble D 06838A 14 4 Inch to 5 Inch Transition If required Figure 14 Vent Support Clamp Support Arm Top View N ID E PIE N Clamp Z S N N D 06839A N Side View HORIZONTALLY VENTED UNIT HEATERS All venting of residential tubular unit heaters must comply with the latest edition of CSA 10 96 27 ed requirement Category III horizontal venting arrangements are designed to use single wall vent pipe These arrange ments must terminate external to the building using either single wall or double wall Type B vent See Figures 15 16 and 18 for installa tion requirements regarding these venting conditions If double wall venting is used components that are UL Listed and approved for Category III positive pressure venting systems must be used with one exception a single 5 foot 1 52 M section of 4 inch 102mm Type B vent pipe with a draft hood connector may be used between the appliance vent connection and the vent terminal Use Metalbestos Type B Gas Vent with a Me
17. H fisv 1 60 WIRING TENE 7 051 BY MANUFACTURER 50 90 NAT amp LP UT 1097 IGNITION CONTROLLER with ROLL OUT SWITCH DIAGRAM RECORD 1 TRANSFORMER GAS VALVE d BY OTHERS OR OPTIONS MV GAS VALVE 24V WIRING 1 DRAFTER MOTOR TERMINAL BLOCK OR M2 FAN MOTOR FIELD CONNECTION POINT WIRE CROSSING NO CONNECTION WIRE CONNECTION WIRE CONNECTION NOTE COLOR KEY IF AN OPTIONAL COMPONENT IS BL BLUE NOT USED WITH RESPECT TO RD RED THE COMPONENT TYPE A DIRECT WH WHITE CONNECTION OR NO CONNECTION BK BLACK SHOULD EXIST GR GREEN YL YELLOW AUTOMATIC IGNITION 115V 1 60 THERMOSTAT DRAFTOR FILE J49 06901 DATE 08 9 2005 REV D 10 NOTICE See Figures 7 8 and 9 for connecting the thermostat to the unit heater If using a standard low voltage thermostat with a sub base switch for fan control remove the jumper between G and R Connect the G terminal of the thermostat to the G terminal of the unit heater VENTING All unit heaters must be vented All Venting installations shall be in accordance with the latest edition of Part 7 Venting of Equipment of the National Fuel Gas Code ANSI Z223 1 or applicable provisions of local building codes Refer to notes below for Canadian installations Refer to Figures 12 19 AWARNING CARBON MONOXIDE Your venting system must not be blocked by any snow snow drifts or any foreign matter
18. N PIPE i DIAMETER SEE SPECIFICATION TABLE 1 18 Figure 18 SINGLE WALL VENT VENTING continued HORIZONTAL ARRANGEMENT SYSTEM TO DOUBLE WALL TERMINATION BUILDING ADJACENT OVERHANG BUILDING SEAL JOINT BETWEEN SINGLE WALL VENT AND VENT AND THE ANNULAR SPACE DF EE a THE VENT VENT PIPE DIAMETER APPROVED HUN SEE SPECIFICATION TABLE 1 VENT CAP 3 0 MIN SEE INSTRUCTIONS 0 9 MIN aan Sco MI N BUILDING MATERIAL SLBM MIN N DEGRADATION FROM FLUE GASES N N N N Sig N FLUE N T N D3661C PITCH FLUE PIPE DOWN TOWARD DUTLET 1 4 PER FOOT 21MM M gt FLASHING OF RUN TO ALLOW FOR WALL al 12 INCHES 305MM PLUS 203 254MM CONDENSATE DRAINAGE MAXIMUM SNOW DEPTH MAX IMUM FOR AREA ABOVE GRADE CLEARANCE TO BE AS SPECIFIED ON TYPE B VENT PIPE Figure 19 SINGLE WALL VENT SYSTEM T DOUBLE WALL TERMINATION 6 0 MIN 1 8M MIN APPROVED 4 VENT CAP f ADJACENT BUILDING SEE INSTRUCTIONS H 6 INCHES 152 FIBERGLASS PLUS MAXIMUM SNOW INSULATION 4 DEPTH FOR AREA MIN 2 THICK VERTICAL PIPE 51 MIN TENSION OVER 12 305MM MUST BE INSULATED ROOF ROOF PITCHED 1 FLASHING FRUM 0 45 7 4 H n 03662 Z Z 7 7 7 7 LLL
19. Panel Heat Exchanger Assembly D4810 28 HOW TO ORDER REPLACEMENT PARTS Please send the following information to your local representative if further assistance is needed contact the manufacturer s customer service department eModel Number Serial Number if any Part Description and Number as shown in Replacement parts Catalog LIMITED WARRANTY Residential Power Vented Tubular Propeller Unit Heaters The Manufacturer warrants to the original owner at original installation site that the above model Gas Fired Heater the Product will be free from defects in material or workmanship for 1 year from the date of shipment from the factory or one and one half 1 1 2 years from the date of manufacture whichever occurs first The Manufacturer further warrants that the complete heat exchanger flue collector and burners be free from defects in material or workmanship for a period of ten 10 years from the date of manufacture If upon examination by the Manufacturer the Product is shown to have a defect in material or workmanship during the warranty period the manufacturer will repair or replace at its option that part of the Product which is shown to be defective This limited warranty does not apply a if the product has been subjected to misuse or neglect has been accidentally or intentionally damaged has not been installed maintained or operated in accordance with furnished written i
20. Seal all vent pipe joints and seams to prevent leakage Use General Electric RTV 108 Dow Corning RTV 732 or equivalent silicone sealant with a temperature rating of 500 F or 3M 425 aluminum foil tape or equivalent The vent system must be installed to prevent collection of condensate Pitch horizontal pipes downward 1 4 inch per foot 21mm per meter toward the outlet for condensate drainage Install a tee with a condensate drain at the low point of the pipe See Figure 13 As an alternate a 3 8 inch diameter hole may be drilled at the low point of the pipe for condensate drainage Horizontal portions of the venting systems shall be supported at maximum intervals of 4 feet 1 2m to prevent sagging Insulate single wall vent pipe exposed to cold air or running through unheated areas Local codes may supersede any of the above provisions Each unit must have an individual vent pipe and vent terminal Each unit MUST NOT be connected to other vent systems or to a chimney Table 4 Category I Horizontal Venting Requirements Vent Maximum Number Maximum Horizontal Minimum Extension Unit Diameter Elbows Vent Length Vertical Rise Distance Size in Ft In from Wall 30 4 1 4 12 36 4 1 8 18 36 4 2 4 12 36 4 2 8 18 36 45 4 1 10 18 36 4 2 5 18 36 5 2 10 12 36 60 5 2 10 12 36 75 5 2 10 24 36 90 5 1 10 24 24 5 2 10 36 24 One elbow is required to make the vertical extension See Figure 1
21. ade in the field attach label J17 06459 to the unit and record adjusted manifold pressure altitude of the unit installation and the technician s name and date on the label using a permanent marker Table 6 NATURAL GAS PROPANE LP GAS NATURAL GAS PROPANE LP GAS Heating Manifold Heating Manifold Heating Manifold Heating Manifold Altitude Value Pressure Value Pressure Altitude Value Pressure Value Pressure Feet BTU Cu ft In W C BTU Cu ft In W C Feet BTU Cu ft In W C BTU Cu ft In W C 2 000 948 3 2 2 278 10 0 6 500 802 2 9 1 927 9 3 2 500 931 3 2 2 237 10 0 7 000 787 2 8 1 891 9 2 3 000 914 3 2 2 196 10 0 7 500 771 2 8 1 853 9 0 3 500 897 3 1 2 156 10 0 8 000 756 2 8 1 817 8 9 4 000 881 3 1 2 116 10 0 8 500 741 2 7 1 781 8 7 4 500 865 3 1 2 077 9 9 9 000 726 2 6 1 745 8 5 5 000 849 3 0 2 039 9 7 9 500 711 2 6 1 709 8 3 5 500 833 3 0 2 000 9 6 10 000 696 2 5 1 673 8 1 6 000 818 2 9 1 964 9 5 Notes 1 Consult local utility for actual heating value 2 Tables based on heating value of 1 050 BTU Cu ft at sea level MAINTENANCE PERIODIC SERVICE NOTICE The heater and vent system should be checked once a year by a qualified technician All Maintenance Service information should be recorded accordingly on the Inspection Sheet provided in this manual A WARNING Open all disconnect switches and disconnect all electrical an
22. annot be maintained AIR FOR COMBUSTION The unit heater shall be installed in a location in which the facilities for ventilation permit satisfactory combustion of gas proper venting and the maintenance of ambient air at safe limits under normal conditions of use The unit heater shall be located in such a manner as not to interfere with proper circulation of air within the confined space When buildings are so tight that normal infiltration does not meet air requirements outside air shall be introduced per Sections 1 3 4 2 and 1 3 4 3 of ANSI Z223 1 for combustion requirements A permanent opening or openings having a total free area of not less than one square inch per 5 000 BTU Hr 1 5 kW of total input rating of all appliances within the space shall be provided NOTICE Unit Heater sizing should be based on heat loss calculations where the unit heater output equals or exceeds heat loss CLEARANCES Each Gas Unit Heater shall be located with respect to building construction and other equipment So as to permit access to the Unit Heater Clearance between vertical walls and the vertical sides of the Unit Heater shall be no less than 1 inch 25 4mm However to ensure access to the control box and fan a minimum of 18 457mm is required for the fan and control box side A minimum clearance of 1 inch 25 4mm must be maintained between the top of the Unit Heater and the ceiling The bottom of the Unit Heater must be no less than 1 inc
23. ard 1 4 inch per foot 21mm per meter toward the outlet for condensate drainage Horizontal portions of the venting systems shall be supported at maximum intervals of 4 feet 1 2m to prevent sagging in Canada support at 3 feet 1m minimum intervals Insulate single wall vent pipe exposed to cold air or running through unheated areas Insulate vent pipe runs longer than 10 feet 3m Insulation should be a minmum of 1 2 inch thick foil faced fiberglass 1 1 2 density insulation Each unit must have an individual vent pipe and vent terminal Each unit MUST NOT be connected to other vent systems or to a chimney Figure 15 Category III Horizontal Venting Requirements Using Single Wall Vent Pipe Ft 305 MM Min Ft 1 52 M2 Min Approved Vent Terminal T t 1 Ft 305 MM Min Above Highest Snowfall L I 1 Es condensate Drain with Trap If required local authorities Figure 15A Category III Horizontal Venting Requirements Using Type B Double Wall Vent Pipe ne Piece Vent 5 Ft 1 52 Draft Hood Connector Thimble J Inch Clearance mi Ftx 1 4 21 2 Min Slope 1 Ft 305 MM Min pproved Vent Terminal T 1 Ft 305 Min Above Highest Snowfall D 06879A Figure 15B Type B Draft Ho
24. ch that the gas ignition control system is not directly exposed to water spray rain or dripping water NOTICE Location of unit heaters is related directly to the selection of sizes Basic rules are as follows MOUNTING HEIGHT If the unit heater is installed in a garage it must be installed with a minimum clearance above the floor of 18 inches 457mm AIR DISTRIBUTION Direct air towards areas of maximum heat loss When multiple heaters are involved circulation of air around the perimeter is recommended where heated air flows along exposed walls Satisfactory results can also be obtained where multiple heaters are located toward the center of the area with heated air directed toward the outside walls Be careful to avoid all obstacles and obstructions which could impede the warm air distribution patterns Unit heaters should not be installed to maintain low temperatures and or freeze protection of buildings A minimum of 50 F 10 C thermostat setting must be maintained If unit heaters are operated to maintain lower than 50 F 10 hot flue gases are cooled inside the heat exchanger to a point where water vapor a flue gas by product condenses onto the heat exchanger walls The result is a mildly corrosive acid that prematurely corrodes the aluminized heat exchanger and can actually drip water down from the unit heater onto floor surface Additional unit heaters should be installed if a minimum 50 F 10 C thermostat setting c
25. d gas supplies and secure in that position before servicing unit Failure to do so may result in personal injury or death from electrical shock A WARNING Gas tightness of the safety shut off valves must be checked on at least an annual basis To check gas tightness of the safety shut off valves turn off the manual valve upstream of the appliance combination control Remove the 1 8 inch pipe plug on the inlet side of the combination control and connect a manometer to that tapping Turn the manual valve on to apply pressure to the combination control Note the pressure reading on the manometer then turn the valve off A loss of pressure indicates a leak If a leak is detected use a soap solution to check all threaded connections If no leak is found combination control is faulty and must be replaced before putting appliance back in service Should maintenance be required perform the following inspection and service routine 1 Inspect the area near the unit to be sure that there is no combustible material located within the minimum clearance requirements listed in this manual A WARNING Under no circumstances should combustible material be located within the clearances specified in this manual Failure to provide proper clearance could result in personal injury or equipment damage from fire 2 Turn off the manual gas valve and electrical power to the unit heater 22 3 Remove service
26. damage or personal injury A WARNING Make sure that the i 04912 structure to which the unit heater is to be mounted is capable of HANGER safely supporting its weight INSTALL FRONT AND REAR HANGERS AS Under no circumstances must the SHOWN USING EXISTING 40 X 1 2 SCREWS gas lines the venting system or the electrical conduit be used to support the heater or should any other objects i e ladder person Figure 4 Heater Mounting Steel Construction lean against the heater gas lines STEEL CONSTRUCTION D 4779 venting system or the electrical conduit for support Failure to heed these warnings may result 2773 8 Mais 2151 2 in property damage personal Lu pem ies woe injury or death E F F LA Q A CAUTION Unit Heaters must be A hung level from side to side and from front to back see Figures 3 4 and 5 id Failure to do so will result in poor M N performance and or premature failure SS of the unit Rear View Side View A WARNING Ensure that all hardware used in the suspension of each unit heater is more than adequate for the job Failure to do so may result in extensive prop erty damage severe personal WOOD CONSTRUCTION D 4778 injury or death Figure 5 Heater Mounting Wood
27. e severe injury or death Only a trained experienced service technician should perform this trouble shooting 1 Check the system thermo stat to make sure it is call ing for heat Do not cycle the thermostat on and off at this time 2 Remove the appliance burner compartment door Do not interrupt power to the control board by opening any electrically interlocked panels 3 Observe the LED indicator on the control board a green LED labeled OK indicates system faults check and repair system as noted in the chart to the right NOTICE Air flow proving switch and power venter hose barbs must be free of any dust or debris at all times Periodically check these openings and or if any problems occur LED STATUS INDICATES CHECK REPAIR Slow Flash Control OK no call for heat Not Applicable Fast Flash Control OK call for heat present Not Applicable Steady Off Internal control fault or no power 1 Line voltage on terminals 120 and C on transformer 2 Low voltage 24V on terminals 24 and C on transformer 3 5 Amp fuse on circuit board Steady On Control internal failure or bad ground 1 Common side of transformer grounded to chassis 2 Loose spark ignitor 2 Flashes In lockout from failed ignitions or flame losses 1 Gas supply off or gas supply pressure too low 2 Flame sense rod contaminated or loose wire 3 Gas valve switch is of
28. e an open flame to detect gas leaks Explosive conditions may exist wich could result in personal injury or death Open the manual valve on the unit heater Turn ON the electrical power The unit should be under the control of the thermostat Turn the thermostat to the highest point and determine that the power venter motor starts and the burners ignite Turn the thermostat to the lowest point and determine that the power venter motor shuts off and the burners are extinguished Turn the thermostat to the desired position See Gas Input Rate and Adjustments sections PON 5 6 SHUT DOWN 1 Turn the valve selector lever to the OFF position 2 Turn off the electricity 3 To relight follow start up instructions See Figure 20 for parts identification Figure 20 Direct Spark Gas Valve D6929B PRIMARY AIR SHUTTER ADJUSTMENT Primary air adjustment is made at the factory No field adjustments are necessary GAS INPUT RATE Check the gas input rate as follows Refer to General Safety Information section for metric conversions CAUTION Never overfire the unit heater as this may cause unsatisfactory operation or shorten the life of the heater 1 Turn off all gas appliances that use gas through the same meter as the unit heater 2 Turn the gas on to the unit heater 3 Clock the time in seconds required to burn 1 cubic foot of gas by checking the gas met
29. e and electrical rating of the transformer should be checked before energizing the unit heater electrical system All external wiring must conform to the latest edition of ANSI NFPA No 70 National Electrical Code and applicable local codes in Canada to the Canadian Electrical Code Part 1 CSA Standard C22 1 CAUTION po not use any tools i e screwdriver pliers etc across terminals to check for power Use a voltmeter It is recommended that the electrical power supply to each unit heater be provided by a separate fused and permanently live electrical circuit A disconnect switch of suitable electrical rating should be located as close to the gas valve and controls as possible Each unit heater must be electrically grounded in accordance with the latest edition of the National Electrical Code ANSI NFPA No 70 or CSA Standard C22 1 Refer to Figures 7 8 and 9 Figure 7 Low voltage Thermostat Wiring Single Stage Low voltage Single Stage Thermostat R GW1W2 i D4788 Figure 8 T834H 1009 or T834H 1017 Thermostat Wiring Honeywell T834H 1009 or Warning RemoveJumper between G and R inside control panel 8 1 1 R G Wi W2 T834H 1017 Thermostat w Oo 5 THERMOSTAT WIRING AND LOCATION NOTICE The thermostat must be mounted on a vertical vibration free
30. e size as the flue 3m Insulation should be a minimum of 1 2 inch connections on the gas unit heater 4 inch 102mm 12 7mm thick foil faced fiberglass 1 1 2 density All heaters must be vented with UL Listed Type B insulation vent or single wall pipe 8 Do not damper the flue piping Failure to open such 2 Provide as long a vertical run of flue pipe at the gas a damper prior to operating the gas unit heater will unit heater as possible A minimum of 5 feet 1 5m result in the spillage of flue gas into the occupied of vertical flue is required The top of the vent pipe space should extend at least 2 feet 0 61m above the 9 Avoid installing units in areas under negative highest point on the roof Install a weather cap over pressure due to large exhaust fans or air the vent opening conditioning When required a flue vent fan should 3 Slope horizontal runs upward from the gas unit be installed in accordance with the instructions heater at least 1 4 inch per foot 21 mm m minimum included with the fan Horizontal runs should not exceed 33 of the 10 Vent connectors serving Category I and Category vertical height of the vent pipe or chimney above II heaters shall not be connected into any portion of the flue pipe connection up to a maximum length mechanical draft systems operating under positive of 10 feet 3m Horizontal portions of the venting pressure system shall be supported at maximum intervals of 11 Also refer to Figures 17 and 19 f
31. er 4 Insert the time required to burn one cubic foot of gas into the following formula and compute the input rate 3600 Sec per Hr X BTU Cu Ft Input Rate Time Sec For example Assume the BTU content of one cubic foot of gas is 1000 and that it takes 48 seconds to burn one cubic foot of gas 3600 x 1000 48 75 000 NOTICE If the computation exceeds or is less than 95 of the gas BTU hr input rating see Table 1 adjust the gas pressure Adjust the gas pressure as follows 1 NATURAL GAS Best results are obtained when the unit heater is operating at its full rated input with the manifold pressure of 3 5 inches W C 0 9 kPa Adjustment of the pressure regulator is not normally necessary since it is preset at the factory However field adjustment may be made as follows a Attach manometer at the pressure tap plug below the control outlet Remove the regulator adjustment screw cap located on the combination gas valve With a small screwdriver rotate the adjustment screw counterclockwise to decrease pressure or clockwise to increase pressure Replace regulator adjustment screw cap b 21 2 PROPANE GAS An exact manifold pressure of 10 0 inches W C 2 5 kPa must be maintained for proper operation of the unit heater If the unit is equipped with a pressure regulator on the combination gas valve follow steps a through d above If the unit is not so equipped the propane gas suppl
32. er ventor wheel loose 1 Replace or tighten 2 Power ventor wheel is dirty 2 Clean power ventor wheel 3 Power ventor wheel is rubbing on the housing 3 Realign power ventor wheel L Fan will not run 1 Loose electrical connections 1 Check and tighten wires on fan circuit 2 Defective motor or overload 2 Test for 115v on terminal ACB Heat and L2 if voltage is present replace motor 3 Defective control board 3 Test for 115v on terminal ACB Heat and L2 on the control board if voltage is not present 45 seconds after trial for ignition replace board M Fan motor turns on and off 1 Motor overload protection is tripping 1 Check motor amps against motor name while burner is operating plate check voltage replace if found defective 2 Loose wiring or connection 2 Check for 115v between motor leads 3 Control board is defective 3 Check terminal ACB Heat for voltage if voltage not constant replace board N Fan will not stop 1 Control Board is in flame failure mode 1 Turn 115v power off to the unit wait 10 seconds and reapply voltage to the unit 2 Fan improperly wired 2 Check wiring of fan circuit to wiring diagram 3 Defective board 3 If unit is not calling for heat and board is not in a flash code mode replace board O Not enough heat 1 Incorrect gas input 1 Refer to Operation 2 Heater undersized 2 Is the heater output sized correctly for heat loss of the space Has the space been enlarged 3 Thermosta
33. f or wires are not connected 4 Broken or cracked porcelain on flame probe or spark ignitor 3 Flashes Pressure Switch open with inducer on or closed with inducer off 1 Obstructions or restrictions in appliance air intake or flue outlet are preventing proper combustion airflow 2 Moisture or debris in tubing that connects pressure switch and draft inducer 3 Airflow switch jumpered or miswired 4 Flashes Limit or rollout switch is open 1 Open manual reset rollout switch 2 Gas pressure too high over fire condition 3 Incorrect airflow due to blockage or motor not operating 5 Flashes Flame sensed while gas valve is off 1 Flame probe miswired or shortened 6 Flashes On board microprocessors disagree 1 Thermostat is interfering with control board 26 IDENTIFICATION OF PARTS RESIDENTIAL TUBULAR 30 90 MBH UNIT SIZES D6930A Item No ItemDescription 1 Vestible Panel Tube Ass y Heat Exchanger 2 Manifold Bracket Sub Ass y 3 Manifold 4 Inshot Burner 5 Standard Orifice Natural Gas or Propane LP Gas 6 Spark Ignitor 7 Flame Sensor 8 Gas Valve Single Stage Natural or Propane LP Gas 9 Manual Rollout Safety Switch 10 Transformer 50 VA 115 24 11 Air Pressure Switch 12
34. fans amp blowers for free movement Manifold gas pressure in W C or kPa Cycle on HIGH LIMIT Cycle and check all other controls not listed 1 Check all controls for proper settings Qu Cycle by thermostat or operating control Remarks 30
35. ft Adjoining building or parapet Adjacent public walkways The venting system for these appliances shall terminate at least 4 feet 1 2m below 4 feet 1 2m horizontal from or 1 foot 0 3m above any door window or gravity vent air inlet into the building The vent terminal must be at least 12 inches 305mm from the exterior of the wall that it passes through to prevent degradation of the building material by flue gases The vent terminal must be at least 3 feet 1m above grade or in snow areas at least 3 feet 1m above the snow line to prevent blockage by snow Through the wall vent for these appliances shall NOT terminate over public walkways or over an area where the condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators relief valves or other equipment Maintain 1 inch 25 4mm between the vent pipe and combustible materials The vent terminal must be installed with a minimum horizontal clearance of 4 feet 1 2m from electric meters gas meters regulators and relief equipment The horizontal portion of the vent pipe must not exceed 8 feet 2 44m for the 30 unit size or 10 feet 3 05m for the 45 to 90 unit sizes The minimum length for the horizontal portion of the vent pipe is 4 feet 1 22m The vent system must be constructed as shown in Table 4 and Figure 13 The vent pipe and vertical extension must be supported as shown in Figure 14
36. g inspected in operation Adjust thermostat so that the appliance will operate continuously After it has been determined that each appliance connected to the venting system properly vents when tested as outline above return doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous condition of use If improper venting is observed during any of the above tests the venting system must be corrected immediately so that the system conforms with the National Fuel Gas Code ANSI 2223 1 When resizing any portion of the venting system the venting system should be resized to approach the minimum size as determined using the appropriate tables in Appendix G of the National Fuel Gas Code ANSI 2223 1 The unit heater shall be connected to a factory built chimney or vent complying with a recognized standard or a masonry or concrete chimney lined with a lining material acceptable to the authority having jurisdiction Venting into an unlined masonry chimney is prohibited ADDITIONAL REQUIREMENTS FOR CANADIAN INSTALLATIONS The following instructions apply to Canadian installations in addition to installation and operating instructions 1 Installation must conform with local building codes or in the absence of local codes with current CGA B149 1 Installation Codes for Natural Gas Burning Appliances and Equipment or CGA B149 2 Installation Codes for Propane Gas Burning Appliances and Equipment
37. h 25 4mm from any combustible The distance between the flue collector and any combustible must be no less than 1 inch 25 4mm Also see AIR FOR COMBUSTION and VENTING sections NOTICE Increasing the clearance distances may be necessary if there is a possibility of distortion or discoloration of adjacent materials MOUNTING The Unit Heater may be mounted with the vent outlet gas and electrical connections to the right or left of the air moving fan The Unit Heater is shipped with the connections to the right of the fan when looking in the direction of the air flow If connections to the right are required remove hanger brackets from face of unit and attach as pictured in Figure 3 If connections to the left are required invert the heater 180 mount the hanging brackets as above and remove invert and replace the control access panel and the air discharge louvers INSTALLATION continued The Unit Heater may be mounted by Figure 3 Hanger Bracket Installation Instructions fastening the hanging brackets directly to ceiling joists or by suspending from f four rods See Figures 3 4 and 5 NC md N FRONT HANGER A WARNING Make certain that the lifting methods used to lift the heater and the method of suspen sion used in the field installation of the heater are capable of uniformly supporting the weight of the heater at all times Failure to heed this warning may result in property
38. he manufacturer s instructions to avoid exposure to fuel substances or substances from incomplete combustion which can cause death or serious illness The state of California has determined that these substances may cause cancer birth defects or other reproductive harm INSTALLER S RESPONSIBILITY Installer Please Note This equipment has been test fired and inspected It has been shipped free from defects from our factory However shipment and installation problems such as loose wires leaks or loose fasteners may occur It is the installer s responsibility to inspect and correct any problem that may be found RECEIVING INSTRUCTIONS EH a Ea Inspect shipment immediately when received to determine if any damage has ERAL INO occurred to the unit during shipment After HVAC PRODUCTS the unit has been uncrated check for any 260 NORTH ELM ST WESTFIELD MA 01085 visible damage to the unit If any damage TEL 413 564 5540 FAX 413 562 5311 is found the consignee should sign the bill www sterlinghvac com KA A MESTEK COMPANY of lading indicating such damage and 7 immediately file claim for damage with the MODELS RF 30 45 60 75 90 transportation company Please utilize this toll free number to contact your local 10 05 representative 800 490 2290 TABLE OF CONTENTS SPECIFICATIONS Basic Description eseenee 2 Performance
39. interrupting the flow of gas to the gas valve if the unit heater becomes overheated The flame roll out switch interrupts the flow of electric current to the control board interrupting the flow of gas to the unit heater in the event of sustained flame roll out from the burner area If this switch trips DETERMINE AND CORRECT THE CAUSE of the flame roll out Once the thermostat is satisfied or the limit switch interrupts the flow of electric current to the control board the unit will begin a post purge period When the post purge period ends the power venter motor is de energized The fan operation is delayed 30 seconds once the thermostat is closed and continues operation for 30 seconds after the thermostat opens The start up fan delay must not exceed 30 seconds from a cold start Flame Rollout Switch 8 The wall thermostat supplied optionally is a temperature sensitive switch that operates the vent system and ignition system to control the temperature of the space being heated The thermo stat must be mounted on a vertical vibration free surface free from air currents and in accordance with the furnished instructions also refer to Electrical Section START UP Also refer to lighting instruction plate equipped on the unit 1 Open the manual gas valve in the gas supply line to the unit heater with union connection loose purge air from the gas line Tighten the union and check for leaks A WARNING Never us
40. ker as described above Failure to do so could result in fatal electric shock Special attention must be given to any grounding information pertaining to this heater To prevent the risk of electrocution the heater must be securely and adequately grounded This should be accomplished by connecting a ground conductor between the service panel and the heater To ensure a proper ground the grounding means must be tested by a qualified electrician Do not insert fingers or foreign objects into heater or its air moving device Do not block or tamper with the heater in any manner while in operation or just after it has been turned off as some parts maybe hot enough to cause injury This heater is intended for general heating applications ONLY It must NOT be used in potentially dangerous locations such as flammable explosive chemical laden or wet atmospheres Do not attach ductwork to this product or use it as a makeup air heater Such usage voids the warranty and will create unsafe operation In cases in which property damage may result from malfunction of the heater a back up system or temperature sensitive alarm should be used Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the appliance before shutting off the electrical supply A CAUTION The open end of piping systems being purged shall not discharge into areas where there are sources of ignition or into confined s
41. lated to personal injury GENERAL SAFETY INFORMATION A WARNING Failure to comply with the general safety information may result in extensive property damage severe personal injury or death A WARNING This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachusetts Installation must be made in accordance with local codes or in absence of local codes with the latest edition of ANSI Standard Z223 1 N F P A No 54 National Fuel Gas Code All of the ANSI and NFPA Standards referred to in these installation instructions are those that were applicable at the time the design of this appliance was certified The ANSI Standards are available from CSA Information Services 1 800 463 6727 The NFPA Standards are available from the National Fire Protection Association Batterymarch Park Quincy MA 02269 If installed in Canada the installation must conform with local building codes or in the absence of local building codes with CGA B149 1 Installation Codes for Natural Gas Burning Appliances and Equipment or CGA B149 2 Installation Codes for Propane Gas Burning Appliances and Equipment These unit heaters have been designed and certified to comply with CGA 2 6 A WARNING Do not alter the unit heater in any way or damage to the unit and or severe personal injury or death may occur A WARNING all power a
42. lied with the heater have to be replaced it must be replaced with wiring material having a temperature rating of at least 105 C Figure 9 Tubular Propeller Units Equipped with a Rollout Switch ELECTRICAL CONNECTIONS continued Tubular 30 thru 90 Unit Sizes with Natural and Propane LP Gas PICTORIAL LINE IN 115V AC CONTROL PANEL 24v Hot 24v Gnd G O 2 TERMINAL BLOCKS TO T STAT ACB Heat TO THERMOSTAT DRAFTER PRESSURE SWITCH HL HIGH LIMIT 24V WIRING BY OTHERS OR OPTIONS 115V 1 60 WIRING SUPPLIED BY OTHERS wi eA UE wi 9 iS 61 THERMOSTAT T834H THERMOSTAT LADDER LINE 120 1 60 saco Li ACB Heat AL ACB Cool 42 CMB L1 L2 2 7 115 24 1712 50 1 6 90 324v Hot 1 1 rs oto P1 2 me P1 5 oT C R 1 4 coy WH R THERMOSTAT MV LM 3e 1 5 HoA o R W FS pe WHE sensor Spark 24v Gnd re LEGEND KEY UNIT RO ROLLOUT SWITC
43. method Never use an open flame or severe personal injury or death may occur Figure 6 Pipe Installation Standard Controls manual shut off valve with 1 8 In plugged tapping accessible for test gage con nection must be installed immediately upstream of the gas supply connection to the appliance When installed within the Commonwealth of Massachusetts o handle gas cock must be used Ground Joint Union To Controls 3 Plugged 76MM Min 1 8 Tn Test Goge Connection Drip Pocket AWARNING Never use an open flame to detect gas leaks Explosive conditions may exist which may result in personal injury or death The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system in excess of 1 2 psig 3 5 kPa The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psig 3 5 kPa ELECTRICAL CONNECTIONS A WARNING HAZARDOUS VOLTAGE DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING Failure to disconnect power before servicing can cause severe personal injury or death Standard units are shipped for use on 115 volt 60 hertz single phase electric power The motor name plat
44. nd gas supplies before installing or servicing the heater If the power disconnect is out of sight lock it in the open position and tag itto prevent unexpected application of power Failure to do so could result in fatal electric shock or severe personal injury A CAUTION Ensure that all power sources conform to the requirements of the unit heater or damage to the unit will result Follow installation instructions CAREFULLY to avoid creating unsafe conditions All wiring should be done and checked by a qualified electrician using copper wire only All gas connections should be made and leak tested by a suitably qualified individual per instructions in this manual Also follow procedures listed on Gas Equipment Start Up Sheet located in this manual Use only the fuel for which the heater is designed see rating plate Using LP gas in a heater that requires natural gas or vice versa will create risk of gas leaks carbon monoxide poisoning and explosion A WARNING Do not attempt to convert the heater for use with a fuel other than the one intended Such conversion is dangerous as it will create the risks previously listed Make certain that the power source conforms to the electrical requirements of the heater A WARNING Do not depend upon a thermostat or other switch as sole means of disconnecting power when installing or servicing heater Always disconnect power at main circuit brea
45. nstructions or has been altered or modified in any way by any unauthorized person b to any expenses including labor or material incurred during removal or reinstallation of the Product c to any damage due to corrosion by chemicals including halogenated hydrocarbons precipitated in the air d to any workmanship of the installer of the Product This limited warranty is conditional upon a advising the installing contractor who in turn notify the distributor or manufacturer b shipment to the Manufacturer of that part of the Product thought to be defective Goods can only be returned with prior written approval of the Manufacturer All returns must be freight prepaid c determination in the reasonable opinion of the Manufacturer that there exists a defect in material or workmanship Repair or replacement of any part under this Limited Warranty shall not extend the duration of the warranty with respect to such repaired or replaced part beyond the stated warranty period THIS LIMITED WARRANTY IS IN LIEU OF ALL WARRANTIES EITHER EXPRESS OR IMPLIED AND ALL SUCH OTHER WARRANTIES INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS LIMITED WARRANTY IN NO EVENT SHALL THE MANUFACTURER BE LIABLE IN ANY WAY FOR ANY CONSEQUENTIAL SPECIAL OR INCIDENTAL DAMAGES OF ANY NATURE WHATSOEVER OR FOR ANY AMOUNTS IN EXCESS OF THE SELLING PRICE OF THE PRODUCT OR
46. od Connector Seal annular space with silicone sealant VENTING continued Figure 16 SINGLE WALL VENT SYSTEM SINGLE WALL TERMINATION BUILDING OVERHANG ADJACENT BUILDING VENT PIPE DIAMETER SEE SPECIFICATION TABLE 1 APPROVED n VENT CAP 3 0 MIN SEE INSTRUCTIONS 0 9 2 18 MIN 4 2 MIN 305 mm MIN e 6 0 MIN LN 51MM MIN TO PREVENT COM MINS ALL ARDUND BUILDING MATERIAL N DEGRADATIUN FRDM FLUE GASES N D SX FLUE N DIA N N N PITCH FLUE PIPE sesen FLASHING DOWN TOWARD DUTLET 1 4 PER FOOT 21MM M gt CLEARANCE FIBERGLASS DF RUN TO ALLOW FOR 51MM 12 INCHES 305MM PLUS TUMBLE INSULATION e CONDENSATE DRAINAGE MAXIMUM SNOW DEPTH MIND F R AREA ABDVE GRADE Figure 17 SINGLE WALL VENT SYSTEM TO SINGLE WALL TERMINATION m 6 0 MIN zi 18M MIN APPROVED VENT ADJACENT BUILDING SEE INSTRUCTIONS J 6 INCHES 152 FIBERGLASS PLUS MAXIMUM SNOW INSULATION 4 DEPTH F R AREA MIN 2 THICK n VERTICAL PIPE EX 51MM MIN TENSION OVER 12 305 M MUST BE INSULATED ROOF M ROOF PITCHED FLASHING FROM 0 TO 45 7 f 136194 2 CLEARANCE J 51 8 MIN THIMBLE 51MM MIN CALL AROUND REDE Lac E
47. or additional 4 feet 1 22m See Figure 12 requirements Approved Figure 12 i DI Vent Terminal 2 Ft Min Use Insulated 061 Mina utdoors S Ft Min Thimble 152 M Min Min Distance 1 25 4 from Pipe to Ceiling 12 1 4 Min 1 Ft 21 MM M Min Slope 10 Ft lt 3 05 M Not to Exceed 337 Vertical Flue Height D 4805 HORIZONTALLY VENTED UNIT HEATERS CATEGORY I U S RESIDENTIAL ONLY All venting of residential tubular unit heaters must comply with CSA International Requirement 10 96 U S for Unit Heaters for Residential Use 2 Edition Category I horizontal venting arrangements are designed to be used with either single wall vent pipe or double wall Type B vent pipe These arrangements must terminate external to the building using either single wall or double wall Type B vent See Table 4 and Figures 13 and 14 for special installation requirements regarding these venting conditions An Amerivent Americap Fields Starkap or Metalbestos vent cap must be supplied by the customer for each power vented unit Vent Systems Termination Clearance Requirements Minimum Clearances for Structure Termination Locations 4 feet below Door window or any gravity vent inlet 4 feet horizontally 1 foot above 3 feet above 6 feet 7 feet above grade Forced air inlet within 10
48. ower vented low static pressure type propeller fan unit heater designed to be suspended within the space to be heated THESE HEATERS ARE NOT TO BE CONNECTED TO DUCTWORK These Tubular Unit Heaters are design certified under ANSI 283 8 for Industrial Commercial use and CSA 10 96 Figure 1 Tubular 30 thru 90 Propeller Unit Heaters U S 2nd ed Unit Heaters for Residential Installation The designs are certified by ETL as providing a minimum of 80 thermal efficiency and approved for use in California Do not alter these units in any way If you have any questions after reading this manual contact the manufacturer See Identification of Parts throughout this manual The following terms are used throughout this manual in addition to the ETL requirements to bring attention to the presence of potential hazards or to important information concerning the product Indicates an imminently hazardous situation which if not avoided will result in death serious injury or substantial property damage A WARNING Indicates an imminently hazard ous situation which if not avoided could result in death serious injury or substantial property damage A CAUTION Indicates an imminently hazardous situation which if not avoided may result in minor injury or property damage NOTICE Used to notify of special instructions on installation operation or maintenance which are important to equipment but not re
49. paces UNLESS precautions are taken as follows 1 by ventilation of the space 2 control of the purging rate 3 elimination of all hazardous conditions All precautions must be taken to perform this operation in a safe manner Unless otherwise specified the following conversions may be used for calculating SI unit measurements 1 foot 0 305 m 1000 BTU cu ft 37 5 MJ m 1 inch 25 4 mm 1000 BTU per hour 0 293 kW 1 gallon 2 3 785 L 1 inch water column 0 249 kPa 1 pound 0 453 liter second CFM x 0 472 1 psig 6 894 kPa meters second FPM 196 8 1 cubic foot 0 028m Table 1 Performance and Dimensional Data Tubular 30 thru 90 Propeller Unit Heater Unit Size 30 45 60 75 90 PERFORMANCE DATAT Input BTU Hr 30 000 45 000 60 000 75 000 90 000 KW 8 8 13 2 17 6 22 0 26 4 Output BTU Hr 24 300 36 450 48 600 60 750 72 900 kW 7 1 10 7 14 2 17 8 21 4 Thermal Efficiency 81 81 81 81 81 Free Air Delivery CFM 500 750 1 000 1 250 1 500 cu m s 0 236 0 355 0 473 0 591 0 710 Air Temperature Rise Deg F 45 45 45 45 45 Deg C 25 25 25 25 25 Full Load Amps at 120V 3 0 3 0 3 7 3 7 4 8 MOTOR DATA Motor HP 1 20 1 20 1 20 1 20 1 20 Motor kW 0 04 0 04 0 04 0 04 0 04 Motor Type SP SP SP SP SP R P M 1650 1650 1050 1050 1050 Motor Amps 115V 1 9 1 9 2 6 2 6 2 6 DIMENSIONAL DATA inches mm A Jacket Height 12 12 17
50. panel To clean or replace the burners remove the four screws holding the manifold to the burner box and pull the manifold back slightly to disengage the orifices from the burners Remove each burner by holding it against the tab on the burner bracket then rotate the inlet end of the burner toward the fan side of the unit and slide the burner off the tabs See Figure 20 5 With the burners removed wire brush the inside surfaces of the heat exchanger 6 Remove any dirt dust or other foreign matter from the burners using a wire brush and or compressed air Ensure that all parts are unobstructed 7 Reassemble the unit heater by replacing all parts reverse order 8 Complete the appropriate unit startup procedure as given in the Operation section of this manual See lighting instruction on the unit nameplate 9 Check the burner adjustment Check all gas control valves and pipe connections for leaks Check the operation of the automatic gas valve by lowering the setting of the thermostat stopping the operation of the gas unit heater The gas valve should close tightly completely extinguishing the flame on the burners Inspect and service motor fan assembly To maintain efficient air flow inspect and clean the fan blades and guard to prevent buildup of foreign matter Check lubrication instructions on motor If oiling is required add 3 or 4 drops of electric motor oil as follows a Light Duty After 3 years or
51. pe is needed 75 Cu ft hr NOTE See General Safety Information section for English Metric unit conversion factors NOTICE If more than one unit heater is to be served by the same piping arrangement the total cu ft hr input and length of pipe must be considered NOTICE If the gas unit heater is to be fired with LP gas consult your local LP gas dealer for pipe size information NOTICE HEATER INSTALLATION FOR USE WITH PROPANE BOTTLED GAS MUST BE MADE BY A QUALIFIED L P GAS DEALER OR INSTALLER HE WILL ENSURE THAT PROPER JOINT COMPOUNDS ARE USED FOR MAKING PIPE CONNECTIONS THAT AIR IS PURGED FROM LINES THAT A THOROUGH TEST IS MADE FOR LEAKS BEFORE OPERATING THE HEATER AND THAT IT IS PROPERLY CONNECTED TO THE PROPANE GAS SUPPLY SYSTEM Before any connection is made to the existing line supplying other gas appliances contact the local gas company to make sure that the existing line is of adequate size to handle the combined load Table 2 Gas Pipe Size Maximum Capacity of Pipe in Cubic Feet of Gas per Hour Cubic Meters per Hour for Gas Pressures of 0 5 psig 3 5 kPa or Less and a Pressure Drop of 0 5 Inch Water Column 124 4 Pa Based on a 0 60 Specific Gravity Gas Nominal Iron Internal Length of Pipe Feet meters Pipe Size Dia 10 20 30 40 50 60 70 80 90 100 125 150 175 200 in in 3 0 6 1 9 1 12 2 15 2 18 3 21 3 24 4 27 4 30 5 38 1 45 7 53 3 61 0 1 2 0 622 175 12
52. pect all gas piping and repair 2 Leaking gas test port on valve 2 Check to ensure gas test ports are seated 3 Blocked heat exchanger 3 Clean heat exchanger flue 4 Blocked draft hood 4 Clean flue collector 5 Negative pressure in the building 5 See Installation F Delayed ignition 1 Improper ground 1 Check grounding wires and spark bracket connections 2 Bad or broken spark cable 2 Inspect spark cable connections and cuts 3 Faulty control 3 Check to ensure spark is energized after pre purge period 4 Pressure regulator set too low 4 Test and reset manifold pressure refer to Operations 5 Main burner orifices dirty 5 Clean or replace orifices 6 Improper venting 6 Refer to Installation G Failure to ignite 1 Gas supply is off 1 Open all manual valves check for leaks 2 No power supply to unit 2 Turn on power supply check fuses and replace if bad 3 Thermostat not calling 3 Turn up thermostat Check for 24v on terminals R and W1 on terminal strip 4 Defective high limit 4 Check switch for continuity if open with no heat present replace 5 Defective drafter prove switch 5 Check switch operation to ensure Switch closes after draftor purge period If it does not make check tubing connections blockage 6 Loose wiring 6 Check all wiring per diagram 7 Improper ground 7 Check all ground wires and connections 8 Improper thermostat or transformer wiring 8 Check both for wiring according
53. r inlet into the building The vent terminal must be at least 12 inches 305mm from the exterior of the wall that it passes through to prevent degradation of the building material by flue gases The vent terminal must be at least 1 foot 305mm above grade or in snow areas at least 3 feet 1m above the snow line to prevent blockage by snow Through the wall vent for these appliances shall NOT terminate over public walkways or over an area where the condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators relief valves or other equipment The vent pipe equivalent length must not exceed 30 feet 9 14m for the 30 and 45 unit sizes and 40 feet 12 2m for the 60 75 and 90 unit sizes Equivalent length is the total length of straight sections PLUS 5 feet 1 52m for each 90 elbow and 2 5 feet 0 76m for each 45 elbow Maintain 1 inch 25 4mm between the vent pipe and combustible materials The vent terminal must be installed with a minimum horizontal clearance of 4 feet 1 2m from electric meters gas meters regulators and relief equipment Seal all vent pipe joints and seams to prevent leakage Use General Electric RTV 108 Dow Corning RTV 732 or equivalent silicone sealant with temperature rating of 500 F or 3M 425 aluminum foil tape or equivalent The vent air system must be installed to prevent collection of condensate Pitch horizontal pipes downw
54. rol board is suspect Check flash code S Power ventor will not run 1 Loose wiring or connections 1 Check all wring in the power vent circuit to ensure good connection including Neutral 2 Motor overload is tripped or bad motor 2 Check for 115v between motor leads and check amp draw of motor Replace if needed 3 Bad control board 3 Check for continuous 115v on terminal CBM Blower and neutral during call for heat If not present and all checks are normal replace T Power ventor turns on and off 1 Power ventor improperly wired 1 Check power ventor circuit per wiring during operation diagram 2 Motor overload cycling or defective motor 2 Check motor voltage and amp draw to motor name plate replace if motor found defective 3 Defective control board 3 Check for continuous 115v on terminal CMB Blower during call for heat replace board if found defective U Power ventor will not stop 1 Power ventor improperly wired 1 Check power ventor circuit per wiring diagram 2 Main burner did not light on call for heat 2 Heater is in lockout mode check flash code table for problem 3 Defective control board 3 No flash codes present along with no call for heat replace control board 25 Table 8 Troubleshooting with LED Indicator Assistance No Cycling or appliance power or thermostat call for heat since appliance failure has occured A WARNING Line voltage power can cause product damag
55. t malfunction 3 Check thermostat circuit 24v on terminals R and W on terminal strip 4 Heater cycling on limit 4 Check air movement across heat exchanger Check voltage and amps at the fan motor Check gas input to ensure unit is not over fired Check heat exchanger to ensure unit is not dirty 5 Incorrect orifice sizes 5 Check orifice size replace if undersized P Too much heat 1 Unit is over fired 1 Refer to Operation Check orifice size If too big replace 2 Thermostat malfunction 2 Check thermostat for operation to ensure circuit open and closes 3 Heater runs continuously 3 Check wiring per diagram check operation at the gas valve look for a short in thermostat circuit 24 Table 7 Tubular Propeller Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE S CORRECTIVE ACTION Q Cold air is delivered during 1 Incorrect manifold pressure or input 1 Refer to Operation heater operation 2 Air throughput too high 2 Refer to Operation R High limit tripping 1 Unit is over fired 1 Burner orifices may be too large verify and replace 2 Air flow is low 2 Check for proper voltage ensure fan blade is correct 3 Defective switch 3 Check operation of switch did the switch open when unit is running or is the switch open during start up 4 Defective control board 4 Check for 24v on line side of the high limit Constant voltage should be recorded if not cont
56. talbestos 4RV DH Draft Hood Connector or Amerivent Type B Gas Vent with an Amerivent 4EDC Draft Hood Connector See Figure 15A If using a single section of Type B vent pipe seal the annular space between the inner and outer sections of the draft hood connector with high temperature silicone sealant See Figure 15B Attach the draft hood connector to the appliance vent connection with screws and seal the joint with silicone sealant Install a Type B vent thimble in the wall Insert the vent pipe through the thimble and attach it to the adapter on the appliance Seal the joint with silicone sealant or two wraps of aluminum foil tape Install a vent cap on the outlet of the pipe and secure it with screws An Amerivent Americap Fields Starcap or Metalbestos vent cap must be supplied by the customer for each power vented unit The vent pipe diameter MUST be 4 inches 102mm CATEGORY III Vent Systems Termination Clearance Requirements Minimum Clearances for Termination Locations 4 feet below 4 feet horizontally Structure Door window or any gravity air inlet 1 foot above 3 feet above Forced air inlet within 10 ft Adjoining building or parapet 6 feet 7 feet above grade Adjacent public walkways The venting system for these appliances shall terminate at least 4 feet 1 2m below 4 feet 1 2m horizontal from or 1 foot 0 3m above any door window or gravity vent ai
57. the ETL certification 202 3 8 695mm Maximum Hanger Spacing Fr 24 610mm Hanger Spacing 16 406mm Hanger Spacing D4889 21 172 Hanger Spacing 546mm Top View Electrical Connection Vent Connection Gas Connection 1 2 Inch Adjustable Louvers 4 Inch 102 MM Natural amp Propane Gas 15 3744 3 4 RENES 400mm 9mm Discharge Fon 0 Spocing eg Discharge Opening D H 1 3 4 44mm L aa 28 5 8 I 80 1 4 4 1 2 114mm 514mm 727mm 9mm a L 8 C Access Panel 203mm Rear View Side View Front View DIMENSIONS IN PARENTHESIS 0009 MILLIMETERS Figure 2 Dimensional Drawing Tubular 30 thru 90 Propeller Unit Heater 4 INSTALLATION A WARNING Do not install unit heaters in corrosive or flammable atmospheres Premature failure of or severe damage to the unit will result A WARNING Avoid locations where extreme drafts can affect burner operation Unit heaters must not be installed in locations where air for combustion would contain chlorinated halogenated or acidic vapors If located in such an environment premature failure of the unit will occur Since the unit is equipped with an automatic gas ignition system the unit heater must be installed su
58. y system pressure must be regulated to attain this manifold operating pressure The adjusted manifold pressure should not vary more than 10 from pressure specified in Tables 5 amp 6 Table 5 Main Burner Orifice Schedule TYPE OF GAS NATURAL PROPANE E HEATING VALUE 1075 BTU Ft 2500 BTU Ft INPUT 40 1 MJ m 93 1 3 I MANIFOLD 8 5 W C 10 W C NO OF 1000 PRESSURE 0 87kPA 2 49 kPA BURNER BTU ORIFICES FT 28 12 29 ORIFICE DRILL 49 57 2 45 FT 42 18 3 ORIFICE DRILL 49 57 FT S HR 56 24 id ORIFICE DRILL 49 57 75 FT 70 30 5 ORIFICE DRILL 49 57 90 FT 84 36 5 ORIFICE DRILL 47 55 This schedule is for units operating at normal altitudes of 2000 ft 610m or less When installed in Canada any references to deration at altitudes in excess of 2000 ft 610m are to be ignored At altitudes of 2000 to 4500 ft 610 to 1372m the unit heaters must be orificed to 9096 of the normal altitude rating and be so marked in accordance with ETL certification TUBULAR UNIT HEATER HIGH ALTITUDE DERATION This Tubular Unit Heater has been manufactured utilizing standard burner orifices and a normal manifold pressure setting as per the specifications shown on your unit rating plate refer to Tables 3 5 and 6 All unit deration must be done through field adjustments by a qualified technician refer to Table 6 Once the proper adjustments are m

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