Laars Mighty Therm HH 500 Installation And Operation Instructions Manual Download Page 26

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LAARS Heating Systems

Page 26

Description

Model

500

600

715

850

1010

1200

1430

1670

1825

op Panel

Assembly

10660701

10660702

0660703

10660704

10660705

10660706

10660707

10660708

10660709

Rear Windshield

10658101

10658102

10658103

10658104

10658105

10658106

10658107

10658108

10658109

Upper Rear Louver Shield

10657101

10657102

0657103

10657104

10657105

10657106

10657107

10657108

10657109

Rear Panel Upper

10658701

10658702

0658703

10658704

10658705

10658706

10658707

10658708

10658709

Gap Closure-Side

106

60200

10660200

(2)

Gap Closure-Middle

106

60100

10660100

Lower Rear Panel

Assembly

10660501

10660502

0660503

10660504

10660505

10660506

10660507

10660508

10660509

Rear End Panel Lf

t. & Rt.

10657700

10657700(2)

657700

10657700

(2)

Lower Rear Shield Inner

10659901

10659902

0659903

10659904

10659905

10659906

10659907

10659908

10659909

Rear Base Extension

10658501

10658502

10658503

10658504

10658505

10658506

10658507

10658508

10658509

Gas

rain Interface Plate

20050200

2005020

20050200

Front End Panel

10657500

0657500

10657500

(2)

Front Base Extension

10659701

10659

702

10659703

10659704

10659705

10659706

10659707

10659708

10659709

Door

10660801

10660802

10660803

10660804

10660805

10660806

10660807

10660808

10660809

(2)

Front Windshield

10659101

10659102

10659103

10659104

10659105

10659106

10659107

10659108

10659109

Front Panel Upper

10658901

10658902

0658903

10658904

10658905

10658906

10658907

10658908

10658909

Flue Panel Front

10659501

10659502

0659503

10659504

10659505

10659506

10659507

10659508

10659509

Flue Panel Rear

10659301

10659302

0659303

10659304

10659305

10659306

10659307

10659308

10659309

Rain Shield-Control Box

106

60400

10660400

(Not shown)

NOTE: Numbers in (

) represent quantity required for each size. Quantity is one otherwise.

SECTION 7. Outdoor Parts Descriptions and Order Numbers

Summary of Contents for Mighty Therm HH 500

Page 1: ...se gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not...

Page 2: ...Venting 8 2C Installation of Outdoor Boilers 9 2D Gas Supply and Piping 9 2E Electrical Wiring 10 2F Water Piping of System 11 2G Filling Fully Connected System 11 SECTION 3 Operation 3A Controls Gen...

Page 3: ...149 requirement When required by the authority having jurisdiction the installation must conform to American Society of Mechanical Engineers safety codes for controls and safety devices for automatica...

Page 4: ...ult in an excessive water temperature rise and unstable boiler operation If the system water flow is variable it must not be allowed to fall below 30 of full flow The boiler must be equipped with stag...

Page 5: ...the boiler piping system shall be equipped with a flow control valve or other automatic means to prevent gravity circulation of chilled water through the boiler Chilled water in the boiler will create...

Page 6: ...es the general requirements specify that boiler rooms should be provided with two permanent air supply openings communicating directly through the wall to outside air one within 12 inches 305mm of the...

Page 7: ...t be completely isolated and this could cause flue products to accumulate in the room Additional air must be supplied to compensate for such exhaust The information in Table 3 is not applicable in ins...

Page 8: ...id ending heater vents near air conditioning or air supply fans The fans can pick up exhaust flue products from the boiler and return them inside the building creating a possible health hazard A minim...

Page 9: ...zing any portion of the common venting system the common venting system should be resized to approach the minimum size as determined using the appropriate tables in Appendix G in the National Fuel Gas...

Page 10: ...corrosion or stress cracking the piping must be rinsed with water after testing unless it has been determined that the leak test solution is noncorrosive 2E Electrical Wiring Electrical diagrams are i...

Page 11: ...l radiation units at the highest points in the piping throughout the system unless automatic air bleeders are provided at such points 5 Run system circulating pump for a minimum of 30 minutes with the...

Page 12: ...8 seconds and provides 100 safety shutdown 2 Operating Controls a Electrically Operating Controls Single two stage four stage or modulating aquastats are provided in models HH and PH boilers to contro...

Page 13: ...nd the pilot spark ignition is initiated until the pilot flame has been reestablished On propane systems unit locks out for safety This sequence should be checked by turning off the manual pilot gas v...

Page 14: ...rature see Table 5 3 Minimum input rates The low firing rate setting must be equal to or greater than the specified minimum input rating as shown on the appliance rating plate Laars boilers use gas va...

Page 15: ...ccurrence dampen the soot deposits with wet brush or fine water spray before servicing or cleaning the heat exchanger With a wire brush remove soot and loose scale from heat exchanger Clean fallen deb...

Page 16: ...ve terminals Check continuity to actuator coil If open circuit or short is indicated replace coil or operator Possible Cause What To Do A Static pressure in system A Calculate height of water in excee...

Page 17: ...o the system Clean tubes with tube cleaning kit Determine hardness Check for modified flow if necessary 7 WATER DRIPPING IN FIREBOX Possible Cause What To Do 6 SOOT IN FLUEWAYS OR IN TUBES OR NOXIOUS...

Page 18: ...81 10364300 10364300 10364300 10364300 10364300 10364300 10364300 10364300 10364300 Return Header S00642 Bronze 10364301 10364301 10364301 10364301 10364301 10364301 10364301 10364301 10364301 13 Inle...

Page 19: ...ature Control Wells Inlet Outlet Header 1 Firing Mode L K C 2 Dry Wells 2 Firing Mode H A Natural Gas Boilers Heaters 500 thru 850 2 Dry Wells 1010 thru 1430 3 Dry Wells 1670 thru 1825 4 Dry Wells B P...

Page 20: ...e Rear Panel Heat Shield Weldment 10540401 10540402 10540403 10540404 10540405 10540406 10540407 10540408 10540409 33 End Panel Upper Right 10531600 10531600 10531600 10531600 10531600 10531600 105316...

Page 21: ...Mighty Therm Hydronic Boiler Page 21 Figure 20 Tile Assemblies...

Page 22: ...4600 W0034600 W0034600 W0034600 Pilot Burner Honeywell Standing Pilot Propane W0034400 W0034400 W0034400 W0034400 W0034400 W0034400 W0034400 W0034400 W0034400 53 Pilot Burner Johnson IID Pilot Nat W00...

Page 23: ...1400 F0011400 F0011400 75 Plug Sq Hd 1 NPT P0033000 P0033000 P0033000 P0033000 P0033000 P0033000 P0033000 P0033000 P0033000 76 Plug 1 2 NPT P0026900 P0026900 P0026900 P0026900 P0026900 P0026900 P00269...

Page 24: ...0703 10550704 97 Burner Tray I I D Mech Mod 3 4 Sect Manifold Nat 10551201 10551202 10551203 10551204 10551205 98 Burner Tray St Pl Mech Mod SpIt Manifold Pro 10550301 10550302 10550303 10550304 99 Bu...

Page 25: ...Mighty Therm Hydronic Boiler Page 25 Figure 21 Outdoor Parts...

Page 26: ...9903 10659904 10659905 10659906 10659907 10659908 10659909 10 Rear Base Extension 10658501 10658502 10658503 10658504 10658505 10658506 10658507 10658508 10658509 11 Gas Train Interface Plate 20050200...

Page 27: ...6 10661507 10661508 10661509 2 2 2 4 4 4 4 4 4 10 Baffle Heat Exchanger 10667701 10667702 10667703 10667704 10667705 10667706 10667707 10667708 10667709 7 14 14 14 14 28 28 28 14 41 Middle Front Panel...

Page 28: ...ould be ordered separately SECTION 8 Optional Parts Descriptions and Order Numbers H0117400E Standard PH Model Pumps Armstrong 1050 PH Model Part Number Description 500 850 A2000700 1 3 hP with 3 1 2...

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Laars Mighty Therm HH 500, Installation And Operation Instructions Manual

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