Weil-McLain LGB 6-20 Series User's Manual
Contents
1. 18 15 29 9 24 15 9 LGB 17 2 18 15 31 9 25 16 9 LGB 18 2 20 16 33 9 27 16 9 LGB 19 2 20 16 34 9 27 16 9 LGB 20 2 22 16 36 9 29 14 11 23 7 19 Table 2 Boiler Propane Inlet Pipe Size Boier Propane Inlet Pipe Size Model Carton Medel Carton Number Left base Right base Number Left base Right base LGB 6 A and B 1 LGB 14 l 1 1 LGB 7 A and B 1 LGB 15 J 112 ie LGB 8 C and D 1 LGB 16 J 1 1 LGB 9 C and D 12 LGB 17 J i 1 LGB 10 E Fand G 15 LGB 18 K 15 1 LGB 11 E Fand G 1 LGB 19 L 15 1 4 LGB 12 E Fand G 15 LGB 20 L 1 1 LGB 13 H 1 1 Part Number 550 141 816 0798 I Figure 1 Pilot burner assembly typical Figure 2 Main flame sensor assembly Part Number 550 141 816 0798 CSD 1 Control System Propane gas New installation continued Igniter UCS Pilot 10 32 x 5 16 Machine Screws 2 Locating Slot AA Ground Leadwire Connect to Pilot Proving Module V GND terminal LN Mounting RO Bracket 10 32 x 1 4 Machine Screws 2 Burner Support Bar Pilot Line Tubing Sensor Lead Main Burner R amp S ES with Pilot i Mounting Bracket LGB A84 B Igniter Lead Union 6 32 x 5 16 Type F Self Tapping Screws 2 Locating Slot 10 32 x 5 16 Machine Screws 2 Ground Leadwire Connect to Main Flame Proving Module 24 V GND terminal Burner Support2. Bar Flame Sensor Mounting Bracket Sensor Lead Main Burner with Pilot Mounting Bracket LGB A85 LGB 6 to LGB 20 5eries2 Control Supplement Existi ng installation conversion gas to propane gas 11 12 13 14 15 16 This conversion is to be installed by a Weil McLain distributor or other qualified agency in accordance with the manufacturer s instructions and all codes and requirements ofthe authority having jurisdiction Failure to follow instructions could result in serious injury or property damage The qualified agency performing this work assumes responsibility for this conversion For your safety turn off electrical power supply before making any electrical connections to avoid possible electrical shock hazard These instructions are for use with Propane Control Cartons as listed in Gas Control Arrangement Table 2 page 2 Remove jacket door s and access panel s Disconnect wiring and tubing from existing pilot burner and main flame sensor Remove all burners Remove 3 95 mm natural gas main burner orifices in manifold Install 2 40 mm propane gas main burner orifices Use pipe dope sparingly only on male ends Use pipe dope compatible with propane gases Do not overtighten orifices Remove and discard existing electronic pilot burner from pilot burner tube Replace with electronic pilot burner in carton Attach Q327 standing pilot
3. OTHERS OPERATING CONTROL T YTA AY see NOTE 11 SNE N A A N ie THERMOCOUPLE HIGH GAS PRESSURE SWITCH WHEN USED 24V GND SENSE SPARK NO 1 BASE PILOT PROVING MODULE THERMOCOUPLE N L LIC see NOTE 11 SNe NA E HiGHGas PRESSURE SWITCH WHEN USED 24V GND SENSE SPARK NO 2 BASE PILOT PROVING MODULE Intermittent MAIN FLAME PROVING MODULE amp 9 MANUAL RESET HIGH LIMIT MAIN GAS VALVE HIGH FIRE OPERATOR NOTE 5 FIRING RATE CONTROL WHEN USED MV MV PV MAIN GAS VALVE LOW FIRE OPERATOR d NOTE 5 ALARM ALARM SECONDARY GAS VALVE 24V 24 GND MAIN FLAME SENSOR NO 1 BASE SENSE PILOT SOLENOID VALVE PILOT FLAME SENSOR PILOT BURNER NOTE 8 MAIN GAS VALVE HIGH FIRE OPERATOR NOTE 5 FIRING RATE CONTROL WHEN USED MV MV PV PV 3 ALARM ALARM SECONDARY GAS VALVE 24V 24 GND MAIN FLAME SENSOR SENSE 2 o NO 2 BASE MAIN FLAME PROVING MODULE PILOT SOLENOID VALVE PILOT FLAME SENSOR PILOT BURNER NOTE 8 WEIL McLAIN Pilot A United Dominion Company CONNECTED TO GAS VALVES AND FIRING RATE CONTROL TERMINALS WHEN USED PILOT LEADWIRES ARE NOT FIELD REPLACEABLE REPLACE PILOT ASSEMBLY IF NECESSARY k 2 DENOTES FIELD INSTALLED CHASSIS GROUND 10 ALL CON
4. ES 1 ALL WIRING MUST BE INSTALLED IN ACCORDANCE WITH A U S A NATIONAL ELECTRICAL CODE AND ANY OTHER NATIONAL STATE OR LOCAL CODE REQUIREMENTS B CANADA C S A C22 1 CANADIAN ELECTRICAL CODE PART 1 AND ANY OTHER NATIONAL PROVINCIAL OR LOCAL CODE REQUIREMENTS 2 ALL WIRING EXTERNAL TO BOILER JACKET MUST BE A U S A N E C CLASS 1 B CANADA C S A C22 1 C E C PART 1 3 IF ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED TYPE 105 DEGREES C OR ITS EQUIVALENT MUST BE USED EXCEPTION SEE NOTE 6 SIZES 13 THRU 20 REFER TO CONTROL COMPONENT INSTRUCTIONS PACKED WITH BOILER FOR APPLICATION INFORMATION MV PV TERMINAL ON MAIN GAS VALVE IS A SINGLE TERMINAL COMMON FOR LOW AND HIGH FIRE OPERATORS REFER TO CONTROL SUPPLEMENT FOR GROUND LEADWIRE ATTACHMENT IF ORIGINAL GROUND LEADWIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED TYPE 125 C OR ITS EQUIVALENT MUST BE USED WIRES ARE FACTORY INSTALLED TO CONTROL PANEL BUT MUST BE FIELD LOW VOLTAGE FIELD HIGH VOLTAGE FIELD THERMOCOUPLE LEAD LOW VOLTAGE FACTORY HIGH VOLTAGE FACTORY IGNITION SENSING CABLE FACTORY WIRED TO CONTROL FIELD WIRED TO GAS VALVE OR FIRING RATE CONTROL MAIN GAS VALVE TERMINAL 5 LADDER WIRING DIAGRAM LES P S d m pts pa P A 1 Propane gas L eo EQUIPMENT GROUND cm 120 V A LOW WATER MANUAL CUT OFF RESET STEAM ONLY LWCO SERVICE SWITCH BY
5. L SLAN SHIM x 193NNOOSIG aasnd aasn N3HM Wou3 HOLIMS HOLIMS 10 ld 3unssaud H3INHOJSNVH LL SVO HOIH su3H10 HOLIMS LINHO OL H3INHOJSNVHL WOH TANVd Q3HIM 3Hd NOLIVNISINOO LIATYONIIVH3dO 3unuvuadwaL H9IH 35335 2 Atz 193599 19899 5 TWANVW TWONVIW Qa 3 E H3INHOJSNVH WOU LINDYID 2 Ave ee dailvM F xog t SLAN SHIM JINON SNIAOHd 10119 lIATTHOIH OOM1 3340109 19599 H9IH ldSdH MO 9NlVH3dO TVANYN TVANYN LINDHID WVALS IN31SAS 1OH LINOO L QS2D 3SV8 1 ON INVH9VIG SNIHIM Part Number 550 141 816 0798 LGB 6 to LGB 20 5eries2 Control Supplement VI Leak test procedure Remove red MV and blue PV wires from main gas valve Close main test firing valve attached to the manifold Check that both leak test valves are closed and remove plugs Attach manometer to first leak test valve Open first leak test valve and check for pressure Close first leak test valve and remove manometer Attach manometer to second leak test valve Apply call for heat to boiler Check that electronic pilot proves Open second leak test valve and check for pressure Close second leak test valve and remove manometer N Remove call for heat to boiler j Ww Reinstall pl
6. PERATING LIMIT COMBINATION CONTROL FROM TRANSFORMER HIGH GAS PRESSURE NO 1 RED FLAME FAILURE LAMP PILOT PROVING MOMENTARY MAIN FLAME PROVING MODULE SWITCH IMPULSE RELAY IGNITION CONTROL i SWITCH WHEN USED TERMINAL MAIN FLAME SENSOR IGNITION CONTROL WIRE TIE CLIP BLOCK STANDING PILOT BK NO 1 BASE WIRING FIRING RATE CONTROL WHEN USED MAIN GAS VALVE TWO STAGE COMBINATION VALVE W REGULATOR SECONDARY W GAS VALVE SIZES 6 THRU 20 TO LIMIT CIRCUIT SERVICE SWITCH BY OTHERS FROM FUSED DISCONNECT TRANSFORMER N WIRE NUTS 3 EQUIPMENT GROUND NOTE 9 NO 2 RED FLAME FAILURE LAMP PILOT PROVING MODULE MOMENTARY MAIN FLAME PROVING MODULE SWITCH IMPULSE RELAY i ZH IGNITION CONTROL HIGH GAS PRESSURE SWITCH WHEN USED to 9 C C C TERMINAL 1 62 9 9 PRE WIRED PANEL LZ NOTE 11 THERMOCOUPLE STANDING PILOT PILOT SOLENOID VALVE NO 2 BASE WIRING BK MAIN FLAME SENSOR IGNITION CONTROL WIRE TIE CLIP BLOCK FIRING RATE CONTROL WHEN USED MAIN GAS VALVE TWO STAGE COMBINATION VALVE W REGULATOR SECONDARY W GAS VALVE WIRE NUTS 2 TRANSFORMER ELECTRICAL SHOCK HAZARD CAN CAUSE SEVERE INJURY OR DEATH DISCONNECT POWER BEFORE INSTALLING AND OR SERVICING NOT
7. TACTS SHOWN WITHOUT POWER APPLIED OFF SHELF CONDITION ALARM CONTACT RATINGS 15 Q 250 VAC CONTROL MODULE TERMINAL IGNITION CONTROL PANEL TERMINAL TRANSFORMER TERMINAL PANEL LAMP O O Part Number 550 141 816 0798 LGB Propane Gas CSD 1 Control System Steam or Water 6 thru 20 Weil McLain e 500 Blaine St e Michigan City IN 46360 2388 PART NUMBER 550 141 835 0798WM Part Number 550 141 816 0798 Figure 3 Wiring diagram V Sequence of operation Wiring procedure LGB 6 to LGB 20 Series 2 Control Supplement Wi ri ng continued w 6 Operating control begins startup sequence a Limit control contacts are closed Pilot proving module energized a Pilot solenoid opens b Pilot ignition spark begins c Pilot ignites d Pilot proves NOTICE On failure to sense pilot flame the pilot proving module will wait 5 minutes then retry for ignition Upon 2 consecutive pilot flame failures the control willlockout and illuminate the red lockout light Main flame proving module energized from pilot proving module Secondary gas valve opens Main gas valve opens to low fire position Main burners ignite atlow fire Main flame sensor proves low fire carryover Main gas valve opens to high fire position Main burners increase to high fire mogocp NOTICE On failure to sense main flame the main flame proving module w
8. TJ LGB n e Gas fired boiler LGD Control Supplement LGB 6 to LGB 20 series 2 Propane gas CSD 1 Control System LT Contents I New installation 2 Existing installation 4 Water and steam trim components 4 IV Gas piping V Wiring Sequence of operation 8 Wiring procedure 8 VI Leaktest procedure 10 VII Operating instructions 11 VIII Parts list 12 These terms are used throughout this WARNING Indicates presence of hazards that can cause severe personal injury death or manual to bring attention to the substantial property damage presence of hazards of various risk f levels or to important information NOTICE Indicates special instructions on installation operation or maintenance that the product are important but not related to personal injury or property damage WARNING This Control Supplement must only be used by a qualified installer service technician Read these instructions completely before beginning the installation Failure to follow these instructions can cause severe personal injury death or substantial property damage Part Number 550 141 816 0798 Pilot burner and flame sensor Boiler Model Number LGB 6 LGB 7 LGB 8 LGB 9 LGB 10 LGB 11 LGB 12 LGB 13 From left burner Flame Sens
9. d gas valve from gas supply piping during any pressure test greater than 13 W C Wiring For your safety turn off electrical power supply before making any electrical connections to avoid possible electrical shock hazard 1 All wiring must be installed in accordance with the requirements of the National Electrical Code and any additional national state or local code requirements having jurisdiction All wiring must be N E C Class 1 2 The boiler must be electrically grounded in accordance with the National Electrical Code ANSI NFPA No 70 latest edition Use 105 C thermoplastic wire or equivalent if any of the original wire must be replaced except for pilot spark sense and ground wires 3 Supply wiring to the boiler must be No 14 gauge or heavier Install in conduit 4 A separate electrical circuit with a fused disconnect switch 15 amp recommended should be used for the boiler 5 Referto wiring diagrams Figure 3 pages 6 and 7 and Figure 5 page 9 See section Wiring procedure on page 8 6 Figure5on page9 is the Field Wiring Diagram See Figure 3 pages 6 and 7 for the schematic and ladder wiring diagrams STEAM SCHEMATIC WIRING DIAGRAM LIMIT CIRCUIT MANUAL OPERATING LOW WATER RESET CONTROL CUT OFF LWCO MANUAL RESET HIGH LIMIT HIGH LIMIT JUNCTION WIRE NUTS 4 BOX WATER LIMIT CIRCUIT MANUAL MANUAL RESET RESET LWCO HIGH LIMIT FROM TRANSFORMER TEMPERATURE O
10. dition to the standard automatic reset limit control amanualresetlow water cutoff in addition to the standard automatic reset low water cutoff Part Number 550 141 816 0798 IV Part Number 550 141 816 0798 CSD 1 Control System Propane gas Gas piping 1 Contact gas supplier to size pipes tanks and regulator a Inletgas pressure to manual main shut off gas valve minimum 11 W C maximum 13 W C b Ifpressure to gas valve exceeds 13 W C install 10096 lock up gas pressure regulator upstream of hand valve 2 Remove gas supply knockout disc from jacket panel Follow good piping practices 4 Pipejoint compound pipe dope must be resistant to corrosive action of liquefied petroleum gases Apply sparingly only to male threads of pipe joints 5 Install driplegat inlet of gas connection to boiler Where local utility requires extend drip leg to floor 6 Install ground joint union when required for servicing 7 Support piping by hangers not by boiler or its accessories 8 9 Purge allair from supply piping Before operating boiler check boiler and its gas connections for leaks Do not check for gas leaks with an open flame BUBBLE TEST Failure to WARNING ias WARNING use bubble test or test for leaks can cause severe personal injury death or substantial property damage a Close manual main shut off valve during any pressure testing at less than 13 W C b Disconnect boiler an
11. ent C Donotuse this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part ofthe control system and any gas control which has been under water Placing boiler in operation STOP Read the safety information above Set the Operating controlto lowest setting Turn off all electrical power to the appliance Remove the Base access shield Close the Pilot shut off valve connected to Manual main shut off valve Close Manual main shut off valve Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information above If you don t smell gas go to the next step Open the Pilot shut off valve Press and hold the reset lever on the Pilot switch box Manually light the pilot while holding the lever down Air in the gas supply line will have to purge through the line before sufficient gas will reach the pilot After purging all air hold the Pilot switch box lever for about 1 minute to heat the thermocouple Release the Pilot switch box lever The pilot should remain lit Open the Manual main shut off valve and follow the sequence below This appliance is also equipped with an ignition device which automatically lights the second pilot Do not try to light this pilot by hand Turn on all electric power to the appliance Set Operating control to desired setting If the a
12. erminal strip terminals A1 and A2 close These contacts are rated to 15 amps 250 V To reset the boiler push the red lockout button Figure 4 Junction box assembly dual base boilers Screw Holes to Mount Junction Box mo AS to Jacket Junction Box Base 1 Offset Nipples i 2 S Junction Box Base 2 911BGLrO Part Number 550 141 816 0798 CSD 1 ControlSystem Propane gas 1V d91 TWNIWYAL H3INHOJSNVH L IVNIIAH3 L TANWd TOHINOO NOLLINOI IVNIAW3 L JINON TOHINOO IVNIINH3LE 3ATVA SVO NIV HOSN3S HO 10719 IOHLNOO 31VH ONIHl3 JAYA SVO OLQ3HIM MAIA S IOH1NOO OL Q3HIM AHOLOV 38 M 101ld HOIY In93H M INVA ni Ad NN 9 NOLIVNIBINOO 9 15 AY YAW AdO 3NWASVO AHVONOO3S aasn SY 9NIHl3 3IL3HIM Ave ex HOSN3S SWV14 NIV IOHLNOO NOLLINOI FINGOW 9NIAOHd NIVIA Field wiring diagram Figure 5 4100 IWNIAH3LL OO C OWA OSZ dV 91 ONIIVH LOVLNOO V ANY SLOVLNOO OL Q3HIM ANY SLNAWSYINOAY 310IN3H OL 9NIQHOOOV Q3ZIS 38 OL AlddNS H3MOd WHV V TVNH3IX3 E 318VO SNISN3S NOLLINOI AHOLOV4 39VLETOA HOIH AHOLOV4 39VETOA MOT 91915 39VEIOA H9IH 91314 SDVLIOA SHLON SH3HIO aasn 383HM aasn NIHM WHV1V 31OIA3H H3INHOJSNVHL Z ON NW 3sva8 OL P 5 1 31ON 339 z a aie OVAOZ
13. ill lockout and illuminate the red lockout light For dual base assembly operating control energizes controls for each base assembly at the same time See steps 1 through 3 above Boiler shuts down when operating control satisfied NOTICE Determine right or left electrical supply wiring Attach electrical junction box es to inside jacket end panel Screws and nuts are provided For dual base boilers use offset nipples provided to connect junction boxes together as at right then hang junction boxes by screwing top box to boiler jacket See Figure 4 Attach control transformer s to junction box es Drill 1 8 hole in interior jacket panel midway between ignition control panel and left jacket panel Mount wire support clip using sheet metal screw furnished Complete wiring per diagrams Figure 3 pages 6 and 7 and Figure 5 page 9 Terminate at secondary gas valve in valve junction box with wirenuts and strain relief provided NOTICE Hot side of line voltage to boiler must be wired directly to limit circuit then fed to transformer primary ies Dual Base R terminal of secondaries are to supply power to bases independently of each other Do not wire R terminals together Install pilot proving and main flame proving ground connections as shown in Figures 1 and 2 and wiring diagram Route wires through wire support clip If the boiler locks out the alarm contacts on the t
14. or No 1 NNNMNNN 2 Gas control arrangement LGB 6 to LGB 20 Series 2 Control Supplement New installation Remove all burners from base box assembly Remove 3 95 mm natural gas main burner orifices in manifold Install 2 40 mm propane gas main burner orifices Use pipe dope sparingly only on male ends Use pipe dope compatible with propane gases Do not overtighten orifices Install pilot burners and flame sensor s See Figures 1 and 2 page 3 Follow Table 1 below for electronic pilot burner UCS standing pilot burner Q327 and flame sensor locations on manifold Install gas controls and ignition control panel as shown in Table 2 below and Figure 6 page 12 Attach pilot switch box to interior jacket panel See Figure 6 page 12 Connect thermocouple from standing pilot to switch box Cut 60 pilot tubing into 2 pieces to make connections from pilot valve to pilot switch box and from pilot switch box to standing pilot Attach a 550 223 710 label at boiler operating instruction label Place so that this label reads first b 550 223 796 label at rating label c Wiring diagram on door one on each base Table 1 locations Electronic Standin Boiler Electronic Standin Pilot Burner Pilot Miete Model Feme Senser Pilot Burner Pilot r No 2 No 1 No 2 No 1 No 2 Number No 1 No 2 No 1 No 2 No 1 No 2 9 6 LGB 14 2 16 13 25 8 21 11 7 LGB 15 2 16 13 27 8 22 13 8 LGB 16 2
15. ppliance will not operate turn off gas to the appliance by closing the Manual main shut off valve and Pilot shut off valve Call your service technician or gas supplier Replace Base access shield and Front panel Part Number 550 141 816 0798 This document is intended only as a supplement to the LGB Gas Fired Boiler Manual Follow all instructions in the Manual including those regarding start up found in Section VIII Pilot Thermocouple a connection OX Reset lever Pilot Pilot gas OUT gas IN scio 11 LGB 6 to LGB 20 VIII Series 2 Control Supplement 12 13 14 Parts list Figure 6 Install leak test valves here 131ABGL Ref No Description Size Vendor Part Number Weil McLain Part Number 1 Main flame sensor Honeywell 392956 511 724 274 2 Main burner with pilot bracket Weil McLain 512 200 055 Main flame sensor bracket Weil McLain 423 300 420 1 Kinco Balon 500 511 246 325 3 M hut off val TERM 14 Kinco Balon 600 511 246 330 4 Seconda 19 Honeywell V8943A1003 511 044 191 yg 1 7 Honeywell V8943A1111 511 044 192 5 1 Honeywell 89441 1033 511 044 346 9 1 7 Honeywell 89441 1041 511 044 218 6 Pilot burner standing repair kit propane Weil McLain 383 300 410 7 Pilot burner electronic repair kit p
16. ropane Weil McLain 383 300 411 8 Main burner with pilot bracket Weil McLain 512 200 055 Pilot burner bracket Weil McLain 460 005 624 9 Pilot proving module United Technologies 1003 615 511 330 086 10 Main flame proving module United Technologies 1003 60 511 330 085 11 Impulse relay Potter Brumfield S89R 11ABD 1 24 510 350 226 Honeywell 21 2 12 Push button switch Eaton Controls ZZ1K11810K 511 624 580 Honeywell AML51 C10R 13 Fens icover Eaton Controls ZZOPMOZA 211 624 581 14 Light bulb TI 34 85 Available at Local Supply House F Honeywell V8046C1014 15 Pilot sol d 511 044 039 sus Johnson Controls H91ABG 16 Pilot shut off valve Kinco Balon P2R 511 246 340 17 Pilot switch box Johnson Controls L62GB 3C 511 330 229 18 Thermocouple 48 Honeywell Q309A 511 724 245 1 Watts FBV3 06 511 246 290 19 Firing valve 1 Watts FBV3 07 511 246 292 1 Watts FBV3 08 511 246 294 20 Leak test valve Kinco Balon P2R 511 246 340 21 Pilot tubing alum 4 O D x 032 20 long Available at Local S ly H 22 Pilot tubing alum O D x 032 60 long d be cdd TOUSE Contact local Weil McLain distributor agent for current replacement part and order number Weil McLain WEIL M LAIN 500 Blaine Street 12 A United Dominion Company Part Michigan City IN 46360 2388 http www weil mclain com Number 550 141 816 0798
17. to burner tube in kit Connect pilot tubing and thermocouple to pilot Re install burners See Table 1 page 2 for location of pilot burners and flame Attach pilot switch box to jacket See Figure 6 page 12 Connect thermocouple to pilot switch box Cut 60 pilot tubing into 2 pieces to make connections from tee in pilot line to pilot switch box and from pilot switch box to standing pilot Remove natural gas valve train Install propane gas valve train and fittings from carton See page 5 section IV paragraph 4 ofthis Supplement Re install access panel s See Figure 6 page 12 for propane piping Wire per wiring instructions and wiring diagrams pages 5 9 Add splices as needed Attach a 550 223 710 label at boiler operating instruction label Place so that this label reads first b 550 223 796 label at rating label c Wiring diagram over diagram on door one on each base To place in operation follow instructions on constant burner pilot light up label and boiler operating label Replace jacket doors Water and steam trim components 1 Install water or steam trim components as required by CSD 1 latest edition See the boiler manual for tapping locations a Water boilers require amanualreset high temperature limit control in addition to the standard automatic reset limit control amanualreset low water cutoff b Steam boilers require amanualreset high pressure limit control in ad
18. ugs on leak test valves gt Connect wiring to main gas valve U1 Open main test firing valve attached to the manifold When checking for pressure at the leak test valves any small pressure NOTICE ES i reading is normal If the pressure continues to increase after opening the leak test valve the upstream valve is leaking and should be replaced 10 Part Number 550 141 816 0798 VII Starting boiler CSD 1 Control System Propane gas Operating instructions Gr 10 11 12 13 14 15 16 A This boiler is equipped with a pilot which must be lighted by hand When lighting the pilot follow these instructions exactly The gas supply to this pilot is controlled by Pilot switch box This boiler is also equipped with an ignition device which automatically lights a second pilot The gas supply to this pilot is controlled by the Gas control Do not try to light this pilot by hand B BEFORE OPERATING THE MANUAL PILOT smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Donottrytolight any appliance Donottouchany electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions Ifyou cannot reach your gas supplier call the fire departm
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