Roberts Gorden DF Installation, Operation & Service Manual Download Page 68

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DF-S

ERIES

NSTALLATION

, O

PERATION

AND

ERVICE

ANUAL

Summary of Contents for DF

Page 1: ...ion must be done by a contractor qualified in the installation and service of gas fired heating equipment or your gas supplier Improper installation adjustment alteration service or maintenance can result in death injury or property damage Read the Installation Operation and Service Manual thoroughly before installing or servicing this equipment Installer Please take the time to read and understan...

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Page 3: ...Installation 39 SECTION 8 Venting 40 8 1 Venting 40 8 2 Unvented Operation 41 8 3 Horizontal Venting Category III 41 8 4 Vertical Venting Category III 41 8 5 Unvented Operation Tube Termination 42 8 6 Length Requirements 42 8 7 Vent Material Recommendations 42 8 8 Horizontal Venting Category III 4 10 cm Pipe 43 8 9 Vertical Venting Category III 4 10 cm Pipe 43 8 10 Common Side Wall Horizontal Vent...

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Page 5: ...s to the surface of the reflector Before installation check that local distribution conditions nature of gas and pressure and adjustment of the appliance are compatible This heater must be applied and operated under the general concepts of reasonable use and installed using best building practices This appliance is not intended for use by persons including children with reduced physical sensory or...

Page 6: ...ATION OPERATION AND SERVICE MANUAL 2 FIGURE 1 Top and Bottom Panel Label Placement Description Part Number Logo Label 91032500 Vent Length Label 91039500 Gas Connection Label 91018123 Burner Status Light Label 91032900 ...

Page 7: ...85 216 79 201 18 46 102259 102259 102259 Level droit Level droit E Description Part Number Rating Plate Label 91010401 Lighting Instruction Plate Label 91029602 Wiring Label 91032801 Clearances to Combustibles Label 91010461 Proposition 65 Label 91070016 Thermostat Connection Label 91033000 ...

Page 8: ...tag P N 91037912 is illustrated on the back cover For an immediate solution you may affix this copy on the wall near the heater Know your model number and installed configuration Model number and installed configuration are found on the burner and in the Installation Operation and Service Manual and Page 6 Figure 3 through Page 8 Figure 11 Write the proper clearance dimensions in permanent ink acc...

Page 9: ...ty to assure that adjacent materials are protected from degradation Maintain clearances from heat sensitive equipment and workstations Maintain clearances from vehicles parked below the heater Maintain clearances from swinging and overhead doors overhead cranes vehicle lifts partitions storage racks hoists building construction etc In locations used for the storage of combustible materials signs m...

Page 10: ...50 6 50 79 50 16 127 201 127 DF 175 8 52 82 52 21 133 209 133 DF 200 8 52 96 52 21 133 244 133 FIGURE 4 One Side Reflector inches centimeters Model A B C D A B C D DF 80 6 9 69 54 16 23 176 138 DF 100 6 9 76 59 16 23 194 150 DF 125 6 9 82 65 16 23 209 166 DF 150 6 9 85 69 16 23 216 176 DF 175 8 9 88 73 21 23 224 186 DF 200 8 18 102 73 21 46 260 186 C B D A FIGURE 5 Two Side Reflectors inches centi...

Page 11: ... 83 74 31 21 211 188 DF 175 12 8 85 79 31 21 216 201 DF 200 12 10 85 79 31 26 216 201 FIGURE 7 U Tube Standard Reflector inches centimeters Model A B C D A B C D DF 80 6 38 68 37 16 97 173 94 DF 100 6 40 75 39 16 102 191 100 DF 125 6 46 78 43 16 117 199 110 DF 150 6 50 83 47 16 127 211 120 DF 175 8 54 87 51 21 138 221 130 DF 200 8 54 102 51 21 138 260 130 B D C A FIGURE 8 U Tube 45 inches centimet...

Page 12: ...DF 140 150 12 74 83 22 31 188 211 56 DF 175 12 76 85 22 31 194 216 56 DF 200 12 76 85 22 31 194 216 56 B A C D FIGURE 10 2 Foot Deco Grille and Protective Grille inches centimeters Model A B C D A B C D DF 80 6 38 65 38 16 97 166 97 DF 100 6 40 70 40 16 102 178 102 DF 125 6 46 76 46 16 117 194 117 DF 150 6 50 79 50 16 127 201 127 DF 175 8 52 82 52 21 133 209 133 DF 200 8 52 96 52 21 133 244 133 C ...

Page 13: ...nd D can be reduced by 50 after 25 7 5 m of tubing downstream from where the burner and burner tube connect FIGURE 12 Venting inches centimeters Model A E F A E F DF 80 20 24 18 51 61 46 DF 100 20 24 18 51 61 46 DF 125 20 24 18 51 61 46 DF 150 20 30 18 51 77 46 DF 175 200 20 30 18 51 77 46 Radiant Tubes Vent Pipes Unvented Vented A E F ...

Page 14: ...rovisions shall be made to assure accessibility to suspended heaters for recurrent maintenance purposes 4 3 Public Garages Installation in garages must be in accordance with the following codes United States Refer to Standard for Parking Structures NFPA 88A latest revision or the Code for Motor Fuel Dispensing Facilities and Repair Garages NFPA 30A latest revision Canada Refer to Natural Gas and P...

Page 15: ...osition this hanger no more than 4 10 cm away from the burner Coupling Assembly with Lock Reflector End Cap Punch out center section to accommodate tube Tube and Reflector Hanger Suspend system from these hangers Flex Gas Line with Shut Off Cock Tube Hot rolled or heat treated aluminized tube supplied in 10 3 m lengths Burner Tube Supplied in 10 3 m lengths Burner tube is always the first tube aft...

Page 16: ...ion this hanger no more than 4 10 cm away from the burner Coupling Assembly with Lock Reflector End Cap EF Punch out center section to accommodate tube Tube and Reflector Hanger EF Suspend system from these hangers Flex Gas Line with Shut Off Cock Tube Hot rolled or heat treated aluminized tube supplied in 10 3 m lengths Burner Tube Supplied in 10 3 m lengths Burner tube is always the first tube a...

Page 17: ... Outside Air Collar 3 3 3 3 3 3 92311800 Keps Nut 4 4 4 4 4 4 03051501 Turbulator Adapter 1 1 1 1 03051502 Turbulator 2 5 76 cm Aluminized Steel 4 2 3 2 03051509K Swirler Package 10 3 m Contains Qty 2 62 Swirlers 1 03051510K Swirler Package 15 4 5 m Contains Qty 3 62 Swirlers 1 Table 2 Contents of Standard Core and Extension Packages Core Packages Extension Packages Aluminized Aluminized Part No D...

Page 18: ...ssembly 1 2 3 1 2 3 4 02750313 High Efficiency Reflector 8 3 5 m 2 3 4 6 2 3 4 6 02750802 End Cap EF 2 2 2 2 03090102 Tube and Reflector Hanger EF 2 3 4 5 1 2 3 4 91907302 S Hook 2 3 4 5 1 2 3 4 03050012 Reflector Support Package EF Strap Wire Form Screws 1 2 3 5 2 3 4 6 91107720 U Clip Package 1 1 1 1 1 1 1 1 90502701 Vent Adapter 1 1 1 1 01318902 Tube Clamp Package EF 1 1 1 1 Part Number CP10ALU...

Page 19: ...ated on the rating plate and in this instruction manual The minimum and maximum gas inlet pressures must be maintained as indicated on the rating plate Typical installation configurations are shown on Page 16 Figure 15 Expansion and contraction of the tube dictates that the minimum suspension lengths must be maintained See table on Page 16 Figure 15 WARNING Severe Injury Hazard Secure burner to bu...

Page 20: ...r Placement NOTE Suspension material provided by others Description Part Number S Hook 91907302 Tube Reflector Hanger 0309010X Run Length Typical Expansion Minimum X Length 10 3 m 50 15 2 m 1 3 cm 12 30 5 cm 51 15 5 m 60 18 3 m 2 5 cm 18 45 7 cm 61 18 6 m 80 24 4 m 3 8 cm 24 61 cm ...

Page 21: ...SECTION 6 HEATER INSTALLATION 17 FIGURE 16 Linear Heater Assembly Overview ...

Page 22: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 FIGURE 17 Linear Heater Layout Overview ...

Page 23: ...tallation 7 6 1 229 cm 25 cm NOTE Tubing requires a downward slope of 1 2 13 mm per 20 6 m away from burner S Hook Burner Tube Hanger Offset mounting hole must be to the top Weld seam must be to the bottom of the tube Description Part Number Burner Tube 03051XXX S Hook 91907302 Tube Reflector Hanger 0309010X ...

Page 24: ... SERIES INSTALLATION OPERATION AND SERVICE MANUAL 20 Step 6 2 Tube Clamp Package Installation Bolt Tube Clamp Flat Washer Nut Torque 120 in lb 13 56 Nm Description Part Number Tube Clamp Package 0131890X ...

Page 25: ...oupling lock up the guide rail until snug approximately 3 8 cm to 4 10 cm C Insert tubes into coupling until end of each tube rests against internal pins D Description Part Number Coupling 01329600 Slide Bar Coupling Lock 01329700 Tube 91409XXX NOTE Prior to coupling installation review Swirler Installation on Model DF 175 requires swirler tab to be installed under coupling Swirler installation fo...

Page 26: ...2 Coupling and Tube Assembly Continued Repeat Step 6 3 A D until all tubes are assembled See Page 22 Step 6 3 2 Tighten slide bar as shown below 10 1 3 m 25 m Total Overall Tube Length 7 6 1 2 3 m 25 m Model Tube Length Minimum DF 80 20 6 m DF 100 30 9 m DF 125 30 9 m DF 150 40 12 m DF 175 40 12 m DF 200 50 15 m ...

Page 27: ...r Adapter 2 5 76 2 cm 03051501 Turbulator Section 2 61 cm 03051502 Tube 91409XXX Install turbulator as specified in the Turbulator Installation chart below Turbulator Installation Model Tube Section DF 80 2nd 10 3 m Section DF 100 3rd 10 3 m Section DF 125 3rd 10 N A Section DF 150 4th 10 N A Section ...

Page 28: ...irler can begin in either the specified tube section according to the Swirler Installation Chart or the end of the 10 3 m extension and continue towards burner Swirler Installation Chart Model Tube Section Swirler Qty DF 175 4th 10 3 m Section 2 Starters 1 Adapter DF 200 5th 10 3 m Section 1 Starter 1 Adapter Swirlers should not to be installed through 180 U sections or elbows For this reason 15 l...

Page 29: ...tab over tube as shown Swirler Adapter Section Pivot Point Swirler Starter Section Swirler Starter Section Swirler Adapter Section Coupling Tube and Reflector Hanger Burner Tube Note Swirler installation for this model must be complete prior to coupling installation for proper swirler starter tab placement Tab Burner Tube 10 3 m Tube 10 3 m Tube Vent Adapter Swirler Starter Section Swirler Adapter...

Page 30: ...upling Internal Coupling Pin Fold swirler tab over tube as shown Tab Swirler Starter Section Coupling Burner Tube 10 3 m Tube 10 3 m Tube Vent Adapter Swirler Starter Section Swirler Adapter Section Pivot Point 10 3 m Tube Swirler Adapter Section Swirler Starter Section U tube Note Swirler installation for this model must be complete prior to coupling installation for proper swirler starter tab pl...

Page 31: ...p n 03051509K See page 30 for U Tube installation instructions Tab Swirler Starter Section Vent Adapter Coupling Burner Tube Swirler Adapter Section Pivot Point Swirler Starter Section Swirler Adapter Section Tab Burner Tube 10 3 m Tube 10 3 m Tube Vent Adapter Swirler Starter Section Swirler Adapter Section Pivot Point 5 1 5 m Tubes tubes cut in field Swirler Starter Section Swirler Adapter Secti...

Page 32: ...nger and support strap Reflector must not touch tube Failure to follow these instructions can result in death injury or property damage Hanger Burner Tube Reflector Description Part Number Tube Reflector Hanger 0309010X Burner Tube 03051XXX Reflector 96 244 cm 027503XX NOTE All tube surfaces must be covered by a reflector except for a U tube ...

Page 33: ...ither pop rivets or sheet metal screws instead of u clips when installing end caps and joint pieces in areas where impact and high wind may be a factor The following rules must be observed 1 Slide first reflector after burner a minimum 2 4 cm through first hanger and ensure reflector end cap is securely fastened via U clips pop rivets or sheet metal screws Position reflector support with tight scr...

Page 34: ...wer cord into receptacle on rear of burner Note Do NOT face blower air inlet towards hinged access panel if connecting fresh air inlet Doing so will interfere with access panel NOTE To ensure proper orientation attach burner tube with tube weld facing downward Description Part Number Bolt 94273914 Lock Washer 96411600 Blower 90709700 Blower to Burner Gasket 90709801 Locknuts 10 32 92311800 Outside...

Page 35: ...ing additional rules must be adhered to A minimum of 10 3 m on DF 80 and a minimum of 15 4 5 m on DF 100 125 150 175 200 is required between the burner and the U tube The correct turbulator swirler See Page 23 Step 6 4 must be installed in the last standard section of the tube The burner must never be operated in a tilted position The heater must be properly supported at all locations See Page 33 ...

Page 36: ...view Description Part Number U Tube Package 03011XXX 180 U Tube 013359XX Tube and Reflector Hanger 030901XX Coupling 01312700 Reflector End Cap 027508XX U Tube Support Bracket 030205XX 4 10 cm U Bolts 91912500 Reflector Support Set 030500XX S Hook 91907302 Hex Nut 92113000 Lock Washer 96411500 ...

Page 37: ...SECTION 7 OPTIONAL HEATER ACCESSORIES 33 FIGURE 25 U Tube Heater Layout Overview ...

Page 38: ...w Installation Description Part Number Elbow Package 0271870X 90 Elbow 01335801 Coupling 01312700 Reflector End Cap 0275080X Reflector Joint Piece 0275090X U Clip Package 91107720 Minimum Distance Required Between Burner and Elbow Model Minimum Distance DF 80 10 3 m DF 100 15 4 5 m DF 125 15 4 5 m DF 150 15 4 5 m DF 175 15 4 5 m DF 200 15 4 5 m ...

Page 39: ...SECTION 7 OPTIONAL HEATER ACCESSORIES 35 Step 7 2 2 Elbow Installation Step 7 2 3 Reflector Joint Installation Step 7 2 4 Reflector Joint Installation ...

Page 40: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 36 Step 7 2 5 Reflector Joint Detail FIGURE 27 Reflector Joint Detail ...

Page 41: ...on Bracket 2 per Reflector Use additional supports in high air movement applications Tube and Reflector Hanger Reflector Tube Reflector Support Description Part Number Reflector Side Extension Package 0271270X Reflector Side Extension 96 244 cm 0136800X Retainer Clips 02751200 Sheet Metal Screws 94118106 Order Separately Reflector Side Extension Bracket 01329911 ...

Page 42: ... 7 5 1 Grille Installation 12 30 cm Reflector Lower Clearance Shield 17 43 cm Washers Screws Locknuts Align Pilot Holes Description Part Number Lower Clearance Shield Package 01397501 Shield Support Strap 01397500 Lower Clearance Shield 8 2 4 m 02793000 Locknut 8 92311400 Flat Washer 8 95310800 Screw 8 x 3 8 93511406 Description Part Number Aluminum Grille 2 x 4 61 x 122 cm 91407000 ...

Page 43: ...nstallation for Decorative Grilles Description Part Number Deco Grille Shield 24 61 cm 01365900 Description Part Number Reflector Side Extension 48 122 cm 013704XX Distance A Extension Minimum Maximum Part No Width 2 4 cm 6 15 cm 013704XX 8 20 cm 6 15 cm 10 26 cm 013704XX 12 30 cm 10 26 cm 14 37 cm 013704XX 16 40 cm ...

Page 44: ...lation Silicone Cap Grille Finger Description Part Number Grille Section 08050001 Grille End Cap 08050002 Grille Section EF Reflector 08050003 Grille End Cap EF Reflector 08050004 Silicone Cap 91915951 6P NOTE Protective Grille NOT APPROVED for use with 45 tilted reflectors Bend up 90 Pull outward Grille Grille End Cap A B C D Grille Grille End Cap Reflector Final Grille Section 40 101 cm ...

Page 45: ...circumstances according to building ventilation codes Refer to the above codes and Page 42 Section 8 2 for further information Unvented operation also requires compliance with the clearances to combustibles given on Page 9 Figure 12 The bottom of the vent or air intake terminal shall not be located less than 1 0 3 m above grade level The vent shall not terminate less than 7 2 1 m above grade where...

Page 46: ... 10 cm vents in either combustible or noncombustible walls use Tjernlund VH1 4 P N 90502100 or equivalent insulated vent terminal Follow the manufacturer s instructions for proper installation For 6 15 cm common vents in either combustible or noncombustible walls use Tjernlund VH1 6 P N 90502101 or equivalent insulated vent terminal Approved venting material for horizontal venting Category III mus...

Page 47: ...n 20 6 m If using vent lengths greater than 20 6 m condensation will form in the vent pipe Insulation and additional sealing measures high temperature silicone at all seams are required Optional heat exchanger beyond minimum lengths is considered as vent length for length determination Subtract 15 4 6 m of maximum allowed vent or duct length per vent elbow if more than two are used 8 7 Vent Materi...

Page 48: ...ed together with sheet metal screws and sealed with high temperature silicone sealant approved for at least 550 F 288 C supplied by others The installer must perform a leak test on the complete venting system A solution of soap and water should be used to test the venting system Description Part Number Vent Terminal Comb Wall 90502100 Vent Terminal 02537801 XX Description Part Number Vent Cap 4 10...

Page 49: ...sheet metal screws and sealed with high temperature silicone sealant approved for at least 550 F 288 C supplied by others The installer must perform a leak test on the complete venting system A solution of soap and water should be used to test the venting system Description Part Number Vent Terminal 6 15 cm 90502101 Note A continuous section of type B vent may only be used to pass through the outs...

Page 50: ... combustion gases NOTE It is required that all vent pipes and connectors be fastened together with sheet metal screws and sealed with high temperature silicone sealant approved for at least 550 F 288 C supplied by others The installer must perform a leak test on the complete venting system A solution of soap and water should be used to test the venting system Note A continuous section of type B ve...

Page 51: ...e combustion air is not recommended with unvented heaters The air supply duct may have to be insulated to prevent condensation on the outer surface The outside air terminal must not be more than 1 31 cm above the vent termination while maintaining a minimum distance of 3 93 cm for both vertical and horizontal venting 8 11 1 Length Requirements Follow the constraints listed on Page 43 Section 8 6 8...

Page 52: ...on 8 11 4 Vertical Outside Air Supply for Double Heater Installation Requirements Heaters must be controlled by a common thermostat Band Clamp Recommended Flex Hose Recommended Vent Cap Wall 4 10 cm Single Wall Pipe Burner Description Part Number Vent Cap 4 10 cm 90502300 Description Part Number Vent Cap 6 15 cm 90502302 ...

Page 53: ...SECTION 8 VENTING 49 8 11 5 Horizontal Outside Air Supply for Double Heater Installation Requirements Heaters must be controlled by a common thermostat Description Part Number Vent Cap 6 15 cm 90502302 ...

Page 54: ...es The Flexible Stainless Steel Gas Hose US models supplied with the heater is certi fied per the Standard for Connectors for Gas Appli ances ANSI Z21 24 CSA 6 10 latest revision Canada The Rubber Type 1 Gas Hose Canadian models optional with the heater is certified as being in compliance with the Standard for Elastomeric Composite Hose and Hose Couplings for Conducting Propane and Natural Gas CAN...

Page 55: ...el Gas Hose US Models 91412200 3 4 Flexible Stainless Steel Gas Hose US Models 91412203 1 2 Rubber Type 1 Gas Hose Canadian Models 91412206 3 4 Rubber Type 1 Gas Hose Canadian Models 91412207 Description Part Number High gas pressure regulator 2 PSI 90207600 High gas pressure regulator 5 PSI 90207602 See Page 66 Section 14 ...

Page 56: ...at to multiple burners see Page 53 Section 10 2 Heaters must be grounded in accordance with applicable codes United States Refer to National Electric Code NFPA 70 latest revision Canada Refer to Canadian Electrical Code CSA C22 1 Part 1 Latest revision If any of the original internal wiring must be replaced it must be replaced with wiring materials have a temperature rating of at least 221 F 105 C...

Page 57: ...ired for 2 burners and 1 thermostat 2 4PDT relays required for 3 or 4 burners and 1 thermostat Maximum of 4 burners per thermostat 4PDT relay provided by others W W2 R L1 L2 CR W2 W R RC TRANSFORMER 120VAC 60 Hz POWER SUPPLY EXTERNAL RELAY DPDT LOW FIRE EXTERNAL RELAY DPDT HIGH FIRE 120VAC 60 Hz POWER SUPPLY W W2 R C L1 L N 24VAC ALL BURNERS MUST BE CONNECTED TO GROUND NOT SHOWN BURNER 1 BURNER 2 ...

Page 58: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 54 10 3 Internal Wiring ...

Page 59: ...SECTION 10 WIRING 55 10 4 Ladder Diagram 10 5 Electrical Connection to the Burner ...

Page 60: ...opens the two stage gas valve for low fire operation and energizes the spark igniter 4 When the flame is established the sparking sequence ceases The burner is either operat ing at high fire or low fire depending on the load conditions sensed by the thermostat If the burner is on high fire the high fire indicator light will illuminate immediately The low fire indicator light will illuminate upon i...

Page 61: ...lation and service of equipment sold and supplied by Roberts Gordon LLC and conform to all requirements set forth in the ROBERTS GORDON manuals and all applicable governmental authorities pertaining to the installation service operation and labeling of the equipment To help facilitate optimum performance and safety Roberts Gordon LLC recommends that a qualified contractor conduct at a minimum annu...

Page 62: ...Section 10 Suspension Points Make sure the heater is hanging securely Look for signs of wear on the chain or ceiling See Page 16 Figure 15 Decorative and Protective Grille optional The grille must be securely attached Check that the side reflector extensions are installed correctly and secured in place if necessary Decorative grille only See Page 38 Section 7 5 and Page 40 Section 7 6 Make sure sh...

Page 63: ...and vapors the minimum required clearances to combustibles away from heater Some objects will catch fire or explode when placed close to heater Cut Pinch Hazard Wear protective gear during installation operation and service Edges are sharp WARNING Failure to follow these instructions can result in death injury or property damage Burn Hazard Allow heater to cool before service Tubing may still be h...

Page 64: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 60 12 1 Troubleshooting Flow Chart ...

Page 65: ...SECTION 12 TROUBLESHOOTING 61 ...

Page 66: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 62 12 2 Manifold Gas Pressure Setting ...

Page 67: ...e all safety systems are in working order before leaving the heater to operate Minor faults may be traced by using the troubleshooting charts on Page 59 Section 12 through Page 62 Figure 12 2 Carbon Monoxide Hazard WARNING Use only genuine ROBERTS GORDON replacement parts per this installation operation and service manual Failure to follow these instructions can result in death electric shock inju...

Page 68: ...DF SERIES INSTALLATION OPERATION AND SERVICE MANUAL 64 ...

Page 69: ...02568200 Burner Cup Assembly 03020100 Gas Valve Natural 90034900 Electrode 90427400 DSI Ignition Module 90439500K Transformer 90436900K Pressure Switch 200 90439801K 175 90439802K 125 150 90439803K 80 100 90439805K Motor Blower Assembly 90709700 P Blower Outlet Gasket 90709801 Burner Status Light 91316103 Relay SPDT 90447140 ...

Page 70: ...Air Connection Size 4 10 cm Refer to figure above for dimensional information ELECTRICAL RATING ALL MODELS 120 V 60 Hz 1 A run GAS INLET PRESSURE Natural Gas for BH 40 60 80 100 115 125 140 150 4 6 wc Minimum for BH 175 200 5 0 wc Minimum 14 0 wc Maximum LP Gas 11 0 wc Minimum 14 0 wc Maximum PRODUCT TYPE ACCORDING TO ASHRAE HANDBOOK HVAC SYSTEMS AND EQUIPMENT LATEST EDITION Type C Indirect Tube T...

Page 71: ...quired annual maintenance history The data plate and or serial number are removed defaced modified or altered in any way The ownership of the ROBERTS GORDON GORDONRAY DF is moved or transferred This warranty is non transferable Roberts Gordon LLC is not permitted to inspect the damaged equipment and or component parts READ YOUR INSTALLATION OPERATION AND SERVICE MANUAL If you have questions about ...

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