Laars MINI-THERM JX Installation And Operation Instruction Manual Download

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Page 48

12.A Parts List

100

125

150

200

Jacket

Components

A1 Panel,

Top,

Front

R5X3032

R7X3032

R10X3032

R12X3032

R15X3032

R20X3032

A2 Panel,

Left

Side

R5X3043

A3 Panel,

Front

5X3038

7X3038

10X3038

12X3038

15X3038

20X3038

A4 Front

Cover

R5X3045

R7X3045

R10X3045

R12X3045

R15X3045

R20X3045

A5 Latch,

Slot,

Quarter

Turn

Assy

R2086800

A6 Flue

Collector

5X3019

7X3019

10X3019

12X3019

15X3019

20X3019

A7 Draft

Diverter

Assembly

5X3030

7X3030

10X3030

12X3030

15X3030

20X3030

A8 Panel,

Top,

Rear

5X3031

7X3031

10X3031

12X3031

15X3031

20X3051

A9 Panel,

Rear

5X3037

7X3037

10X3037

12X3037

15X3037

20X3037

A10 Panel,

Right

Side

R5X3044

Base

Assy

(includes

A12,A13

and

A14)

5X1000

7X1000

10X1000

12X1000

15X1000

20X1000

A12 Base

Assy,

Support

‐

A13 Baffle,

Base

Panel

‐

A14 Tunnel,

Burner

‐

A15 Burner

‐

Bank

Cover

Assembly

5X5004

7X5004

10X5004

12X5004

15X5004

20X5004

A16 Front

and

Rear

Baffle

and

Tile

cover

(2)

5X2020

7X2020

10X2020

12X2020

15X2020

20X2020

A17 Baffle,

Heat

Exchanger

(7)

5X2012

7X2012

10X2012

12X2012

15X2012

20X2012

Water

System

Heat

Exchanger

5X2000

7X2000

10X2000

12X2000

15X2000

20X2000

Tile

Set

includes

B2,B3

and

R5X2013

R7x2013

R10X2013

R12X2013

R15X2013

R20X2013

Refractory,

Tile,

Rear

‐

Refractory,

Tile,

Front

‐

Clamp,

Spring,

Tile

‐

Valve,

Drain,

3/4"

227

‐

48070

‐

01 227

‐

48070

‐

01 227

‐

48070

‐

01 227

‐

48070

‐

01 227

‐

48070

‐

01 227

‐

48070

‐

Valve,

PRV,

PSI

‐

054

‐

054

‐

054

‐

054

‐

054

‐

054

Adapter

1/4"

NPT

BSPP

P2142900

Spacer/Washer

for

Gauge

Adapter

P2143000

Well,Immersion,1/2

NPT,extra

short

E2402900

Gauge,2",Press./Temp.,Remote

A2117600

B10 Low

Loss

Header

Assembly

‐

5X205001

Pump,

Circulator

A2136500

Diverter

Sub

Assembly

5X207202

5X207201

‐

Ring

(Pump)

S2138700

Seal

(Flange)

S2137800

Gas

System

Pilots
Pilot

Assembly

(Natural)

R0061600

Pilot

orifice

(LP)

‐

10,000'

W2001700

Pilot

orifice

(Nat)

‐

2000'

W2016400

Pilot

orifice

(Nat)

2001

‐

10,000'

W2002200

Main

Gas

Valves

Gas

Valve,

(Natural)

RV2030700

Gas

Valve,

Regulator

Spring(LP)

V2015100

Gas

Manifold

5X6001

7X6001

10X6001

12X6001

15X6001

20X6001

Burner,

Main

and

Orifices

Burner,

Main

L0052500

Air

Shutter,

Burner

L0055900

Main

Gas

Orifice

(not

shown)

Note:

For

complete

conversion

kits

(LP

Nat

all

altitudes

available)

see

accessory

section.

Natural

Gas

‐

2000'

L0032200

2001'

‐

5000'

L0050700

5001'

‐

8000'

L0032600

8001'

‐

10000'

L0050300

Propane

‐

2000'

L0039000

2001'

‐

5000'

L0032900

5001'

‐

8000'

L0032800

8001'

‐

10000'

L0032700

Burner

W/Pilot

Bracket

L0056500

Tube,

Pilot

5X5002

Electrical

System

D1 Controller

E2401400

Limit

Sensor

24"

E2407200

D2 Transformer

115/24V

(40VA)

R0021300

D3 Roll

‐

Out

Switch,

Man.

Reset,250F

SPST

E2103200

D4 Blocked

Vent

Safety

Switch

R2061100

D5 Circuit

Breaker,

AMP,

Panel

Mount

E2335100

D6 Terminal

Block

Finger

Guard

E2402100

Wiring

Harnesses

(not

shown)

Low

Voltage

Harness

(TB1

damper) E2403400

E2403400

Connector

Harness

(Safety

Chain) E2402700

E2402700

LLH

Pump

Harness

‐

E2402800

Pump

Kit

Harness

20071500

‐

High

Voltage

Harness

E2402600

‐

Tension

Ignition

Lead

E2407000

Vent

Damper

Assembly

(not

shown)

RE2071501

RE2071502

RE2071503

RE2071504

Accessories

and

Parts

DHW

Relay

Kit

CA019400

Relay,

24VAC,

DTDT

E2327800

DHW

Harness

E2404200

Terminal

Block

Finger

Guard

E2402100

Outdoor

Sensor

CA005400

Power

Vent

Kits

CA019501

CA019502

Low

Loss

Header

Kit

for

50/75/100

CA019600

‐

Conversion

Kits

‐

2,000'

CA019901

CA019905

CA019909

CA019913

CA019917

CA019921

2,001

‐

5,000'

CA019902

CA019906

CA019910

CA019914

CA019918

CA019922

5,001

‐

8,000'

CA019903

CA019907

CA019911

CA019915

CA019919

CA019923

8,001

‐

10,000'

CA019904

CA019908

CA019912

CA019916

CA019920

CA019924

Nat

‐

2,000'

CA020001

CA020005

CA020009

CA020013

CA020017

CA020021

Nat

2,001

‐

5,000'

CA020002

CA020006

CA020010

CA020014

CA020018

CA020022

Nat

5,001

‐

8,000'

CA020003

CA020007

CA020011

CA020015

CA020019

CA020023

Nat

8,001

‐

10,000'

CA020004

CA020008

CA020012

CA020016

CA020020

CA020024

Jacket Components

A1 Panel, Top,

A2 Panel, Le

�

A3 Panel,

A4 Front

A5 Latch, Slot, Quarter Turn Assy

R2086800

A6 Flue

A7 Dra

�

Diverter Assembly

R5X3030

R7X3030

R10X3030

R12X3030

R15X3030

R20X3030

A8 Panel, Top,

A9 Panel,

A10 Panel, Right

Base Assy (includes A12,A13 and A14)

5X1000

7X1000

10X1000

12X1000

15X1000

20X1000

A12 Base Assy, HX Support

A13 Ba

ﬄ

e, Base Panel

A14 Tunnel, Burner

A15 Burner-Bank Cover Assembly

R5X5004

R7X5004

R10X5004

R12X5004

R15X5004

R20X5004

ﬄ

e Kit (Includes A16, A17 and retainer)

R2087901

R2087902

R2087903

R2087904

R2087905

R2087906

A16 Front and Rear Ba

ﬄ

e and Tile cover (2)

5X2020

7X2020

10X2020

12X2020

15X2020

20X2020

A17 Ba

ﬄ

e, Heat Exchanger (7)

5X2012

7X2012

10X2012

12X2012

15X2012

20X2012

Water System

Heat

Tile Set includes B2,B3 and B4

R5X2013

R7X2013

R10X2013

R12X2013

R15X2013

R20X2013

Refractory, Tile, Rear

Refractory, Tile, Front

Clamp, Spring, Tile

Valve, Drain,

-48070-01 227-48070-01 227-48070-01 227-48070-01 227-48070-01 227-48070-01

Valve, PRV, 30

-054

1-054

Adapter 1/4" NPT x 1/8" BSP

P2148200

Washer

for

Gauge

Adapter

Well,Immersion,1/2 NPT,extra short

E2402900

Pressure Gauge,Remote

R2087700

B10 Low Loss Header Assembly

R5X205001

Pump,

A2136500

Diverter Sub Assembly

5X207202

5X207201

O-Ring

)

(

S2138700

Seal

)

(

Gas System

P2148300 P2148300 P2148300 P2148300 P2148300 P2148300

Pilot Assembly (Natural)

R0061600

Pilot ori

ﬁ

ce (LP) 0 - 10,000'

W2001700

Pilot ori

ﬁ

ce (Nat) 0-2000'

W2016400

Pilot ori

ﬁ

ce (Nat) 2001-10,000'

W2002200

Main Gas Valves
Gas Valve, (Natural)

RV2030700

Gas Valve, Regulator Spring(LP)

V2015100

R2088501

R2088502 R2088503 R2088504 R2088505 R2088506

Gas

d Replacement Kit

Burner, Main and Ori

ﬁ

ces

Burner,

Air Shu

�

er,

Main Gas Ori

ﬁ

ce (not shown)

Note: For complete conversion kits (LP or Nat all al

�

tudes available) see accessory sec

�

on.

Natural Gas 0

- 2000'

L0032200

2001'-5000'

L0050700

5001'-8000'

L0032600

8001'-10000'

L0050300

Propane 0 -2000'

L0039000

2001'-5000'

L0032900

5001'-8000'

L0032800

8001'-10000'

L0032700

Burner W/Pilot Bracket

L0056500

Tube,

Electrical System

D1 Controller w/ limit sensor 24"

R2087800

Limit Sensor

D2 Transformer 115/24V (40VA)

R0021300

D3 Roll-Out Switch, Man. Reset,250F SPST

E2103200

D4 Blocked Vent Safety Switch

R2061100

D5 Circuit Breaker, 2 AMP, Panel Mount

E2335100

D6 Terminal Block Finger Guard

E2402100

Wiring Harnesses (not shown)

Low Voltage Harness (TB1 & damper)

E2403400

X1 Connector Harness (Safety Chain)

E2402700

LLH Pump Harness

20071500 E2402800

E2402800

Pump Kit

High Voltage Harness

E2402600

Hi-Tension Igni

�

on Lead

E2407000

Vent Damper Assembly (not shown)

RE2071501

RE2071502

RE2071503

RE2071504

Accessories and Parts

DHW Relay

Relay, 24VAC, DTDT

E2327800

DHW Harness

E2404200

Terminal Block Finger Guard

E2402100

Outdoor Sensor

CA005400

Power Vent

Low Loss Header Kit for 50/75/100

CA019600

Conversion Kits
LP 0-

LP 2,001-

LP 5,001-

LP 8,001-

Nat 0-

Nat 2,001-

Nat 5,001-

Nat 8,001-

SECTION 12 REPLACEMENT PARTS

LAARS Heating Systems

Summary of Contents for MINI-THERM JX

Page 1: ...ment Installation and service must be performed by a qualified installer service agency or gas supplier AVERTISSEMENT Assurez vous de bien suivres les instructions donn es dans cette notice pour r dui...

Page 2: ...0 6 D Typical Plumbing Diagrams 21 SECTION 7 ELECTRICAL AND WIRING DIAGRAMS 7 A Safety Warnings 23 7 B Main Power 120V 15 Amp Circuit 23 7 C Outdoor Sensor 23 7 D Field Connections 24 7 D 1 TB1 Term B...

Page 3: ...System 36 9 B System Start Up Seq of Operation 36 9 C Proper Pilot Flame 38 9 D Lighting Instructions Decal 39 9 E System Shutdown 40 SECTION 10 MAINTENANCE 10 A Removing the Covers and Panels 40 10...

Page 4: ...justing high limit to anything other than 190 F 88 C Installing an outdoor sensor for the purpose of setting the Reset Curve Changing the temp readout from Fahrenheit to Celsius or back to Fahrenheit...

Page 5: ...ater use adjust the outlet control limit or use temperature limiting valves to obtain a maximum water temperature of 125 F 52 C WARNING The inlet gas pressure to the unit must not exceed 13 W C 3 2kPa...

Page 6: ...njury death or property damage Disconnect the power supply before beginning installation or changing the wiring to prevent electrical shock or damage to the equipment It may be necessary to turn o mor...

Page 7: ...Connections See 7 B on page 23 See 7 D on page 24 Gas Valve Pilot Ignitor Sensor Shown with front cover off Field Connections TB1 DHW Relay Connections TB3 Field Connections TB2 Low Loss Header Vent...

Page 8: ...nt cover and allow for advanced settings and installations that have outdoor reset and Low Water Cut Off LWCO with manual reset and several other advanced settings See SECTION 8 on page 30 Figure 4 Sy...

Page 9: ...4 Front View Draft Diverter Damper 6 15 3cm 3 1 4 8 3cm Low Loss Gas Supply Header A D B V 1 1 4 NPT Female OUT Supply IN Return 1 1 4 NPT Female 53cm 23cm F2 11 8cm 4 5 8 21 9 1 8 Max E Right View 1...

Page 10: ...Installation Clearances the minimum clearance between hot water pipes and combustible construction is 1 2 5 cm 2 A minimum of 15 381mm access must be available in front of the boiler for burner remov...

Page 11: ...es Improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death AVERTISSEMENT Cette chaudi re doit tre ventil conform ment a...

Page 12: ...openings one within 12 inches 305mm of the ceiling the other within 12 inches 305mm of the floor NOTE In Canada follow Canadian Standard CAN CSA B149 1 or local codes Outside Air Supply When combusti...

Page 13: ...p is designed so that it can be easily removed for normal boiler service and inspection without removal of the venting Avoid terminating boiler vents near air conditioning or air supply fans The fans...

Page 14: ...d expected system water temperatures Also ensure the boiler s anti condensing features are utilized by properly wiring the system pumps See Figure 28 on page 27 WARNING Do not store any chemical clean...

Page 15: ...c e d i s n i o t e c n a r a e l C G H Clearance to each side of centerline extended above meter regulator assy 3 ft 91 cm within a height of 15 ft 4 6 m m c 1 9 t f 3 t e l t u o t n e v r o t a l u...

Page 16: ...ANSI Z223 1 NFPA 54 AVERTISSEMENT Lorsqu une chaudi re existante est retir e d un syst me de ventilation commun le syst me de ventilation commun est susceptible d tre trop grand pour une ventilation a...

Page 17: ...ed gas meter Gas supply pressures to the heater are listed in Table 3 SECTION 4 Gas Connections 4 A Gas Supply and Piping Follow this guideline checklist for the gas supply installation 1 Gas piping i...

Page 18: ...e DO NOT ATTEMPT TO CONVERT THIS HEATER FOR USE WITH ANY OTHER TYPE OF FUEL AVERTISSEMENT Le unit est con u pour tre utilis avec du gaz naturel ou du gaz LP mais seulement des navires de l usine comme...

Page 19: ...eadloss See Table 5 Primary Secondary systems and boilers with LLH systems can be used to avoid needing larger system pumps Water Flow Requirements Electrical Data All Sizes with Low Loss Header witho...

Page 20: ...system utilizing oxygen permeable tubing Provide a water to water heat exchanger between systems to prevent corrosion of ferrous metals such as the boiler s piping wet walls etc Air elimination devic...

Page 21: ...es Indirect Tank Air Scoop Zone Pumps mustbesized properly Valves Check Valves DHW Pump Drains Drains Drains Drains Check Valve Valves Indirect Tank Check Valve Valves Indirect Tank DHW Pump DHW Pump...

Page 22: ...and 100 Low Loss Header is standard on models 125 150 and 200 and Optional for models 50 75 and 100 Figure 16 Low Loss Header with Zone Pumps and DHW Typical Plumbing Diagrams continued KEY PUMP CHECK...

Page 23: ...nly 7 A Safety Warnings NOTE All internal electrical components have been pre wired No attempt should be made to connect electrical wires to any other location except the terminal blocks and line volt...

Page 24: ...the optional DHW Relay Kit will control the boiler to the high limit setpoint See SECTION 8 for functionality 7 D 1 c Field Interlocks Field Interlocks allow for auxiliary limits or LWCO Breaking the...

Page 25: ...sation due to low inlet water temperature 7 D 2 c Aux Power This terminal and the 120V N terminal provide constant high voltage to accessories such as power vent combustion air and or zone relay syste...

Page 26: ...Air System Laars Power Vent Kit L1 N T1 T2 T3 L1 N T1 T2 T3 L N 1 2 4 Example Fields Controls CAS 4 Wiring to JX Combus on Air System Example Laars Power Vent Kit and Fields Controls CAS 4 Wiring to...

Page 27: ...d the total capacity of the transformers See Zone Valve manufacturer s installation instructions for valve electrical requirements Three Wire Zone Valves need an Isolation Relay if not using a zone co...

Page 28: ...4V L PILOT VALVE 24V L MAIN VALVE 24V N Y GAS VALVE S BLOCKED VENT SWITCH SWITCH ROLL OUT 24VAC 120VAC R O A A OAS COM W W SD X1 X2 X4 Y Y R R CONNECTOR DAMPER O Y Y R R R R TRANSFORMER BOILER PUMP CO...

Page 29: ...X1 2 X1 8 X1 5 MAIN VALVE 24V N 24V L 24V L SPARK IGNITOR GENERATOR SPARK J1 WATER TEMP SENSOR FACTORY INSTALLED X3 5 POWER VENTER PROOF OF FAN not supplied FACTORY JUMPERED VENT DAMPER PROOF OF OPEN...

Page 30: ...it to Celsius or back to Fahrenheit To change the economy settings 8 A 2 The HI LIMIT Dial Program Select The high limit is factory set at 190 F To adjust turn the HI TEMP dial until the desired setti...

Page 31: ...ctive IMPORTANT NOTE If the sensor installation has been modified to a single function sensor well this LED will not illuminate indicating that the control is not providing low water cut off functiona...

Page 32: ...proceed to Step 3 If you are using outdoor sensor and you ve programed your Reset Ratio then skip the Economy dial and proceed to Step 4 Always finish with Step 4 to ensure the high limit is properly...

Page 33: ...eset press and hold the Mode button The LED will illuminate solid red after 10 to 30 seconds but continue to hold the Mode button for 60 seconds and the LWCO will shut down the boiler and the LOW WATE...

Page 34: ...l regulate the boiler s temperature based on the temperature outside On cold days the boiler will run at higher temperatures to meet the heating load in the house On warmer days the boiler will run at...

Page 35: ...f the LOW WATER light is ng the control has been programmed to provide lock rotection in the event a low water condition is detected Manual Reset Low Water Cut Off ORTANT The system must be checked by...

Page 36: ...prevent air locked zones and boiler damage M START UP Carbon monoxide hazard The vent damper must be fully open and the flue must be clear before the main burner fires If the burner fires when the ve...

Page 37: ...he manual gas valve and verify that the burner flame is extinguished and the boiler continues to try to restart continuous retry of pilot You can then allow the boiler to restart by opening the manual...

Page 38: ...and the pilot should be adjusted down using the valve s pilot adjustment screw shown in Figure 42 If the flame is small and the inner cone does not engulf the pilot ignitor sensor then the pilot is u...

Page 39: ...ndie ou une explosion entra nant des dommages des blessures ou la mort A Cet appareil est muni d un dispositif d allumage qui allume automatiquement la veilleuse Ne tentez pas d allumer la veilleus ma...

Page 40: ...his panel off in normal operation High voltage and temperatures could cause a hazardous condition 10 A 1 Access Cover Removal To remove the front access cover simply turn the lock at the top center of...

Page 41: ...l 10 A 3 Side Panel Removal Remove the front access and the top as described previously Drain the boiler and remove the drain valve and or the PRV and associated fittings depending on the panel being...

Page 42: ...n 10 B Maintenance WARNING The Warranty does not cover damage caused by lack of required maintenance lack of water flow or improper operating practices AVERTISSEMENT La garantie ne couvre pas les domm...

Page 43: ...or power on any switch on the boiler 5 To perform voltage checks on 120VAC attach one meter lead to either terminal 2 or 3 of TB1 Use the other lead to check for power at any high voltage terminal or...

Page 44: ...efficiency Replace heat exchanger 6 Pump noisy Air in volute Bleed air from volute Check pump alignment Worn bearings Replace worn parts 7 Boiler pounding or knocking Water flow too low through boiler...

Page 45: ...ature drops to the automatically calculated Target Temp Differential Is the Green LED TEMP ACTIVE On The Control is Not Powered The Temp Active LED will be on at all times when the control is powered...

Page 46: ...VAC on the Gas Valve WARNING 11 D 2 Troubleshooting Flow Chart 2 burners on from previous page Is There 24 VAC on the PV terminal of the Valve If Flame Light is solid spark should be off and 24VAC sho...

Page 47: ...and system piping is simplified Primary Secondary Piping Two or more interconnecting circulating loops each with its own pump Primary Boiler Circuit Secondary System Circuit Reverse Return Piping Bal...

Page 48: ...X 5 R 3 4 0 3 X 5 R e d i S A3 Panel 8 3 0 3 X 0 2 8 3 0 3 X 5 1 8 3 0 3 X 2 1 8 3 0 3 X 0 1 8 3 0 3 X 7 8 3 0 3 X 5 t n o r F A4 Front 5 4 0 3 X 0 2 R 5 4 0 3 X 5 1 R 5 4 0 3 X 2 1 R 5 4 0 3 X 0 1 R...

Page 49: ...Page 49 C2 A7 A2 A9 A1 A8 A10 A3 A4 A12 A13 A14 D3 B2 B4 B5 C6 C3 B6 D13 D2 B8 B9 A15 D1 A6 A5 A16 A17 B1 B7 C1 D4 C5 C4 B4 B3 MINI THERM JX Residential Boilers...

Page 50: ...L0039000 L0039000 L0039000 L0039000 2001 5000 L0032900 L0032900 L0032900 L0032900 L0032900 L0032900 5001 8000 L0032800 L0032800 L0032800 L0032800 L0032800 L0032800 8001 10000 L0032700 L0032700 L00327...

Page 51: ...2 not shown 1 H2413100 INSTRUCTIONS INSTALLATION DHW RELAY KIT JX n 1 5X7002 DHW PANEL ASSY JX ECN DECIMALS XX DRAFT CHECK RELEASE REVISIONS K REV CF 6JUL20 DWG CHANGE IN WRITING BY LAARS HEATING SYST...

Page 52: ...6 Fax 800 559 1583 Headquarters 20 Industrial Way Rochester NH USA 03867 603 335 6300 Fax 603 335 3355 9 Brigden Gate Halton Hills Ontario Canada L7G 0A3 905 203 0600 Fax 905 636 0666 www Laars com Li...

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