Laars Mini-Therm JVH Installation And Operation Instructions Manual Download Page 34

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LAARS Heating Systems

Page 34

Mini-Therm JVH

Size

Description

JVH-50

JVH-75

JVH-100

JVH-125

JVH-160

JVH-225

Gas System

1 Pilots

Pilot Assembly (Nat.), Hot Surface

RW2001800

Pilot Assembly (LP), Hot Surface

RW2001900

2 Burner with Pilot Bracket

L0056500

3 Main Burner

L0052500

4 Main Gas Valves

Gas Valve, Hot Surface, (Nat.) SV9600H

R0384700

RV2001900

Gas Valve, Hot Surface, (LP) SV9500H

R0384800

5 Gas Orifices

(0-2000 FT.) Nat., Orifices

L0032200

L0050700

(2001-5000 FT.) Nat., Orifices

L0050700

L0032600

(5001-8000 FT.) Nat., Orifices

L0032600

L0050300

(8001-10,000 FT.) Nat., Orifices

L0050300

(0-5000 FT.) LP, Orifices

L0032900

(5001-8000 FT.) LP, Orifices

L0032800

(8001-10,000 FT.) LP, Orifices

L0032700

L0032800

6 Gas Manifold

L0052601

L0052602

L0052603

L0052604

L0052605

L0052606

Electrical System

7 Controller, Tekra

RE2344300

8 Transformerll5/24V(50VA)

E2074400

9 Switch, Air Pressure (0-5000 FT.)

E2074501

E2074502

E2074503

Switch, Air Pressure (5001-10000 FT.)

E2074504

E2074505

E2074506

10 Blower/Motor, Induced Draft

R2069600

11 Switch, Roll-out Safety

E2103200

12 Switch, Limit

R0061300

13 Ignition Control

E2102800

Wire Harness (not shown)

E2347500

Fuse, 5-Pack, 4-Amp (not shown)

RE0084401

Temp Sensor (not shown)

E2347600

Outdoor Sensor (not shown)

E2347400

Water System

14 Heat Exchanger

R0402007

R0402008

R0402009

R0402010

R0402011

R0402012

15 Gauge, Temperature/Pressure

A2000400

16 Gauge, Temperature

2400-392

17 Valve, Pressure Relief 30 PSI

R0061400

18A Well, Immersion, 1/2" NPT

E0025902

18B Well, Immersion, 3/4" NPT

E2345700

19 Valve, Drain 1/2' NPT

70-270

Jacket and Fire Box Components

20 Base Weldment

20400701

20400702

20400703

20400704

20400705

20400706

21 Front Panel

11028301

11028303

11028306

22 Jacket 11027901

11027901

11027903

11027905

11027906

23 Cover, top rear

11028501

11028502

11028503

11028504

11028505

11028506

24 Cover, top front

11028401

11028402

11028403

11028404

11028405

11028406

25 Access Panel, heat exchanger plug

10535900

10535901

10535900

10535901

26 Cover, piping jacket top

11047601

11047602

11047601

11047602

27 Flue Collector Weldment

20403901

20403902

20403903

20403904

20403905

20403906

28 Burner Tray Weldment

20403001

20403002

20403003

20403004

20403005

20403006

29 Control Box Weldment

20608500

30 Control Box Cover

11045901

31 Burner Cover

20403304

20403305

20403306

20403304

20403305

20403306

32 Tile Cover

10469504

10469505

10469506

10469504

10469505

10469506

33 Heat Exchanger Baffle

10485307

10485305

10485306

10485307

10485305

10485306

34 Front Refractory

T2007704

T2007705

T2007706

T2007704

T2007705

T2007706

35 Rear Refractory

T2007804

T2007805

T2007806

T2007804

T2007805

T2007806

36 Orifice Plates

Orifice Plate, Nat. (0-5000 FT.)

20404605

20404607

20404609

20404605

20404607

20404609

Orifice Plate, Nat. (5001-10,000 FT.)

20404605

20404606

20404608

20404605

20404606

20404608

Orifice Plate, LP (0-5000 FT.)

20404606

20404608

20404610

20404606

20404608

20404610

Orifice Plate, LP (5001-10,000 FT.)

20404604

20404606

20404612

20404604

20404606

20404612

37 Flue Outlet

D2004201

38 Bracket, pressure switch

11028200

10B Parts List JVH

Summary of Contents for Mini-Therm JVH

Page 1: ...your gas supplier from a nearby phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified i...

Page 2: ...ections 4A Gas Supply and Piping 13 4B Special Precautions for LP 15 SECTION 5 Water Connections 5A Water Piping 15 5B By pass Piping 17 5C Adjusting the bypass 17 5D Alternate Auto Bypass Operation 1...

Page 3: ...ay void the warranty If field conditions require modifications consult the factory representative before initiating such modifications ATTENTION L eau chaude chaudi re doit tre install en conformit av...

Page 4: ...or 0 5 000 Propane H 2 001 5 000 Natural I 5 001 8 000 Natural and Propane J 8 001 10 000 Natural and Propane 11th Character Country U USA Canada 12th Character Revision 2 Second Revision 1C Heater I...

Page 5: ...of the boiler and the closet door when it is closed see Figure 1 2C Flooring JVS model boilers can only be installed on noncombustible flooring JVH model boilers are designed and certified for install...

Page 6: ...nnection Gas Connection in mm in mm in mm 50 75 100 125 160 225 13 3 8 13 3 8 16 7 8 16 7 8 20 3 8 25 5 8 340 340 429 429 518 651 3 1 8 2 1 4 5 3 4 5 1 2 7 1 4 10 79 57 146 140 184 254 2 7 8 2 2 7 8 2...

Page 7: ...4 1 2 75 13 3 8 340 27 3 4 710 24 1 8 610 21 3 4 550 27 1 2 700 5 13 1 1 4 1 2 100 16 7 8 430 28 3 4 730 24 1 8 610 22 3 4 580 27 1 2 700 5 13 1 1 4 1 2 125 16 7 8 430 28 3 4 730 23 5 8 600 22 3 4 58...

Page 8: ...long as the minimum clearances are observed See Table 2JVH and Figure 1JVH for clearances required for the Mini Therm JVH See Table 2JVS and Figure 1JVS for clearances required for the Mini Therm JVS...

Page 9: ...f a blower is necessary to provide adequate combustion air to the boiler a suitable switch or equivalent must Figure 2 Chimney Venting Figure 3 Vertical Venting CHIMNEY LINER THIMBLE VENT SYSTEM BOILE...

Page 10: ...ocated to prevent interference with the inducer damper Do not weld the vent pipe to the boiler collar The weight of the stack must not rest on the boiler The boiler top must be easily removable for no...

Page 11: ...to nationally recognized standards see National Building Code or ANSI NFPA 211 4 The boiler must not be connected to a fireplace wood stove or other solid fuel burning equipment 5 When the boiler and...

Page 12: ...oduct High Temperature RTV Dow Corning Trade Mate 2 51mm wide Aluminum foil tape adhesively backed Venture Product 3243 2 51mm wide Aluminum foil tape adhesively backed 3M Product 433 Vent Sealing Mat...

Page 13: ...spect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction leakage corrosion or other deficiencies which could cause an unsafe condition Section 4...

Page 14: ...are not followed Attention Vous endommagerez la soupape de gaz si vous ne respectez pas les proc dures suivantes 3 Use the figures in Table 7 to size the gas inlet piping from the gas meter to the he...

Page 15: ...ng of the boiler 6 Disconnect the boiler and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1 2 pounds per square inch psi 3 45...

Page 16: ...System Primary Secondary Multi Zone Valve System Low Temperature Installation JV JV JV JV JV JV Primary Secondary Multi Zone Valve System KEY PUMP CHECK VALVE VALVE ZONE VALVE UNION AUTO AIR BLEEDER...

Page 17: ...nd snow melt systems 5C Adjusting the bypass Refer to Figure 10 Provide a means of measuring temperature on the inlet pipe to the boiler such as using a strap on or infrared thermometer Starting with...

Page 18: ...rculator and or primary secondary piping are required Consult factory 1 Chart is based on 30 F 17 C maximum temperature rise 2 Calculations are based on Type L copper tubing with one zone valve and ei...

Page 19: ...Valve Pump From System To System Tempering Valve with System Loop and Boiler Loop Pump JV Pump Isolation Valve Isolation Valve Tempering Valve Pump From System To System Primary Secondary System Loop...

Page 20: ...ollow the schematic in Figures 10A and 10B Remove the wire nut from the two sets of wires and connect the hot lead from the 115V power supply and the neutral lead to the white wires 4 Attach the leads...

Page 21: ...UNLESS VENT DAMPER IS TO BE INSTALLED LA CHAUDI RE NE FONCTIONNERA PAS SANS LE VOLET MOTORIS AUTOMATIQUE LE F AISCEAU DE C BLES DU VOLET MOTORIS DOIT TRE INS R DANS LA PRISE DU VOLET MOTORIS AU CANADA...

Page 22: ...az Switch Limiteur Gas Valve HW VR8304 Air Puls Voir Manuel Prise De Ventilation See Doc 1077 Power Venter Receptacle High Limit Limite Sup rieure Veilleuse Electrode Sensor with Spark Pilot Burner TH...

Page 23: ...OL FAN PROVING ROLLOUT SW GAS VALVE R 2 4 GND R BL R N JVH BK TEMP CONTROL BOILER PUMP TRANSFORMER 110V 110 VAC FUSE 1 BR INDUCER FAN TEMP CONTROL CONTROL RLY CONTROL RLY 24V 3 1 TEMP CONTROL HI LIMIT...

Page 24: ...LAARS Heating Systems Page 24 COM HEAT Figure 11 Multiple Zone Wiring Wiring with Taco Zone Valves Wiring with Honeywell Zone Valves Wiring with Multiple Zone Pumps COM HEAT COM HEAT...

Page 25: ...re falls below the wall thermostat setting the cycle will repeat Section 7 7A Filling the System It is crucial to the efficient operation of the system that all air be removed from the circuit For thi...

Page 26: ...LAARS Heating Systems Page 26 8C Operating Instructions Mini Therm JVH...

Page 27: ...Mini Therm JV Page 27 8D Operating Instructions Mini Therm JVS...

Page 28: ...ollowing data are used to calculate the target setpoint from the outdoor temperature 1 The heating curve or reset ratio RR is set by the potentiometer with a range of 0 4 to 3 6 2 The room temperature...

Page 29: ...heat exchanger is caused by incomplete combustion and is a sign of venting and or combustion air problems The heat Section 9 9A Maintenance 1 Lubricate the water circulating pump per the instructions...

Page 30: ...e terminal board Turn the wall thermostat high enough to call for heat If the meter fails to register 24 volts the thermostat or its circuit may be defective 5 Place the second lead on the purple wire...

Page 31: ...Boiler pounding or knocking Too low water flow through boiler Check temperature rise between inlet and outlet boiler piping 15 F 8 C to 25 F 14 C temperature rise is recommended If temperature rise is...

Page 32: ...UNPLUG IGNITER MEASURE VOLTAGE AT TWO BOTTOM TERMINAL OF SV9501 SV9601 24 VAC NOMINAL YES YES YES YES YES NO NO NO YES NO NO NO Troubleshooting Honeywell SV9501 SV9601 Hot Surface Pilot System JVH on...

Page 33: ...diation Isolation Valve Used to isolate the boiler from the circuit It minimizes the amount of water drained from the system Primary Secondary Piping Two or more interconnecting circulating loops each...

Page 34: ...00 Outdoor Sensor not shown E2347400 E2347400 E2347400 E2347400 E2347400 E2347400 Water System 14 Heat Exchanger R0402007 R0402008 R0402009 R0402010 R0402011 R0402012 15 Gauge Temperature Pressure A20...

Page 35: ...Page 31 ITEMS14 39 AND INSULA TION NOT SHOWN left side right side Figure 14A JVH Parts Identification 25 26 22 25 16 15 27 35 33 38 32 32 17 14 19 20 34 3 28 1 2 6 5 9 23 24 37 36 29 10 31 18A 18B 4 1...

Page 36: ...400 E2347400 E2347400 E2347400 E2347400 Water System 11 Heat Exchanger R0402001 R0402002 R0402003 R0402004 R0402005 R0402006 12 Pressure Relief Valve 30PSI R0061400 R0061400 R0061400 R0061400 R0061400...

Page 37: ...Page 37 Mini Therm JVS on left side Figure 14B JVS Parts Identification 19 17 18 20 7 8 5 22 23 2 24 26 13A 13B 3 1 4 29 14 11 12 25 28 26 21 16 15 9 6 27...

Page 38: ...stomer Service Service Advisors 20IndustrialWay Rochester NH03867 603 335 6300 Fax603 335 3355 ApplicationsEngineering 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130...

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