Laars MINI-THERM JX Manuals

Manuals and User Guides for Laars MINI-THERM JX. We have 2 Laars MINI-THERM JX manuals available for free PDF download: Installation And Operation Instruction Manual, User Manual

Laars MINI-THERM JX Installation And Operation Instruction Manual (52 pages)

Residential Gas-Fired Hydronic Boilers

Brand: Laars | Category: Boiler | Size: 6.2 MB

Table of Contents
2
SECTION 1 GENERAL INFORMATION 1.A Introduction
4
B Warranty
4
C Model Number and Nomenclature
4
D Safety Warnings
5
E Model Overview
6
F Pressure Gauge
8
G Digital Dashboard
8
H the Installation Kit
8
I Accessory Kits Available
8
J Dimensions
8
Section 2 Locating the Boiler
10
A Field Assembly
10
B Boiler Placement
10
C Clearances
10
Section 3 Air and Venting
11
A Safety Warnings
11
B Combustion Air Supply
12
C Venting
13
Vertical Venting - Category I
14
Locations for Vent Pipe Terminator
15
Venting with a Power Venter
16
G Common Vent Test
16
Section 4 Gas Connections
17
A Gas Supply and Piping
17
LP Gas Conversion Kit
18
Special Precautions for LP Gas
18
Pump Sizing with Low Loss Header and an Integral Pump
19
Low Loss Header
19
SECTION 6 WATER CONNECTIONS 6.A Water Piping
20
B Oxygen Permeable Systems
20
Anti-Freeze
20
Typical Plumbing Diagrams
21
ELECTRICAL and WIRING DIAGRAMS Safety Warnings
23
Main Power, 120V / 15 Amp Circuit
23
Outdoor Sensor
23
Field Connections
24
TB1 (Term Block 1 -TT, DHW, OAS)
24
D.1.A TT (Central Heat)
24
D.1.B DHW
24
D.1.C Field Interlocks
24
D.1.D PV Terminals
24
D.1.E WWSD + COM
24
D.1.F OAS + COM
24
TB2 (for Pumps and Aux Power)
25
D.2.A Boiler Pump
25
D.2.B SYS Pump
25
D.2.C Aux Power
25
TB3 (for Optional Equipment)
25
D.3.A DHW Pump
25
D.3.B DHW Aquastat
25
Wiring Connections, Power Vent and Air
26
Wiring Diagram
28
Logic Diagram
29
Section 8 the Digital Dashboard
30
Getting to Know the Digital Dashboard
30
The lo Limit Dial (Advanced Programing)
30
The Hi Limit Dial (Program Select)
30
Economy Dial (no Outdoor Sensor Needed)
31
Mode
31
Control Leds
31
A.5.A TS ACTIVE (TEMP)
31
A.5.B HIGH TEMP
31
A.5.C LWS ACTIVE (LWCO)
31
A.5.D LOW WATER
31
A.5.E TEMP ACTIVE (ECONOMY)
31
A.5.F TEMP TARGET
31
Digital Leds
31
Ignition Leds
32
A.7.A LIMITS
32
A.7.B V-PWR
32
A.7.C V-SW
32
A.7.D FLAME
32
B Advanced Programing
32
Fahrenheit or Celsius
32
Low Water Cut-Off
32
B.2.A RESET, Manual or Automatic
32
B.2.B Testing Low Water Cut off
33
High Limit Differential
33
C Sensor Programming
33
Outdoor Sensors
33
Setting Warm Weather Shutdown
33
Adjusting Outdoor Reset Ratio
34
Thermal Boost Function
34
C.4.A Outdoor Reset
34
C.4.B Thermal Targeting
35
D Restore Factory Default Settings
35
E View Current Settings
35
DHW Functionality
35
Section 9 Initial Startup
36
A Filling the System
36
B System Start up (Seq of Operation)
36
C Proper Pilot Flame
38
D Lighting Instructions Decal
39
E System Shutdown
40
SECTION 10 MAINTENANCE 10.A Removing the Covers and Panels
40
Access Cover Removal
40
Flue Collector Access
40
Side Panel Removal
41
Draft Hood Removal
41
B Maintenance
42
Operating Details and Troubleshooting
43
A Operating Details
43
B Electrical Troubleshooting
43
C Troubleshooting Table
44
D Troubleshooting Flow Charts
45
Troubleshtng Flow Chart 1 (Burners Off)
46
Troubleshtng Flow Chart 2 (Burners On)
46
E Glossary of Terms
47
Replacement Parts
48
A Parts List
48
B Accessories List
50

Laars MINI-THERM JX User Manual (4 pages)

Residential Gas-Fired Hydronic Boilers. Sizes 50-200 MBTU/h

Brand: Laars | Category: Boiler | Size: 0.94 MB

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