Laars Mighty Therm HH 500 Installation And Operation Instructions Manual Download Page 20

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LAARS Heating Systems

Page 20

Description

Model

500

600

715

850

1010

1200

1430

1670

1825

ile, Heat Shield/S

pcr

, Frt. & Rr

10560100

—

(2)

ile, Heat Shield/S

cer

, Front

——

10547901

0547

902

——

10547903

10547901

10547904

10547903

ile, Heat Shield/S

acer

, Front

——

548002

10548003

—

10548001

ile, Heat Shield/S

cer

, Front

——

10548101

10548102

10548103

10548104

ile, Heat Shield/S

cer

, Rear

——

10548201

0548

202

——

10548203

10548201

10548204

10548203

ile, Heat Shield/S

acer

, Rear

——

548302

10548303

—

10548301

ile, Heat Shield/S

cer

, Rear

——

10548401

10548402

10548403

10548404

Saddle Assembly

End

ile

10533600

10533

600

10533600

(2)

Lower End Panel/Heat Shield

eldment, Right

10540701

Lower End Panel/Heat

Shield W

eldment, Lef

10540702

540702

10540702

Lower Rear Panel & Baf

fle

Rear W

eldment

10532901

532902

10532903

10532904

10532905

10532906

10532907

10532908

10532909

Middle Rear Panel/Heat

Shield W

eldment

10540401

10540

402

10540403

10540404

10540405

10540406

10540407

10540408

10540409

End Panel, Upper Right

10531600

0531600

10531600

End Panel, Upper Lef

10534000

1053400

10534000

Upper Rear Panel/Heat

Shield W

eldment

10540501

10540

502

10540503

10540504

10540505

10540506

10540507

10540508

10540509

Front Panel, Upper

10531501

10531502

0531503

10531504

10531505

10531506

10531507

10531508

10531809

Bracket

s, Support, End

ile

10551000

10551

000

10551000

(2)

Draf

thood, Relief Baf

fle, Right

10540901

10540

902

10540903

10540904

10540905

10540906

10540907

10540908

10540909

Draf

thood, Relief Baf

fle, Lef

10541001

10541

002

10541003

10541004

10541005

10541006

10541007

10541008

10541009

Lower Right Panel/Heat

Shield W

eldment

10554601

10554

602

10554603

10554604

10554605

10554606

10554607

10554608

10554609

Middle Front Panel

10554401

10554402

0554403

10554404

10554405

10554406

10554407

10554408

10554409

Sweep Sheet, Flue Collector

10533901

10533902

0533903

10533904

10533905

10533906

10533907

10533908

10533909

NOTE: Numbers in (

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

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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