MASCOT MLXH 125 MBH Manuals

Manuals and User Guides for MASCOT MLXH 125 MBH. We have 1 MASCOT MLXH 125 MBH manual available for free PDF download: Installation And Operation Instructions Manual

Laars MLXH 125 MBH Installation And Operation Instructions Manual

Laars MLXH 125 MBH Installation And Operation Instructions Manual (56 pages)

Brand: Laars | Category: Boiler | Size: 3 MB

Table of Contents

Table of Contents
2
Section 1.

4
General Information

4
- Introduction
  5
- To Open the Mascot LX
  5
- Rating Plate
  5
- Model Nomenclature
  5
- Mascot LX Overview
  6
- Start up / Shut down Instruction (Decal)
  7
- Dimensions for All Sizes
  8
- Unpacking
  10
- Warranty
  10
Section 2.

11
Locating the Appliance

11
- Correct Vent Distance from Outside Wall or Roof Termination
  11
- Wall Mount Hole Locations
  12
Section 3.

13
Venting and Combustion Air

13
- Combustion Air
  13
- Combustion Air from Room
  13
- Ducted Combustion Air
  14
- Venting (Exhaust)
  14
- About Common Venting
  16
- Locating Vent & Combustion Vent Terminals
  17
- Side Wall Vent Terminal
  17
- Side Wall Combustion Air Terminal
  17
- Vertical Vent Terminal
  19
- Vertical Combustion Air Terminal
  19
- Installations in the Commonwealth of Massachusetts
  19
- Common Vent Test
  20
Section 4.

21
Gas Supply and Piping

21
Section 5.

22
Pump Capacity

22
- Mascot LX Heating System Pump Capacity
  22
Water Connections

23
Section 6.

23
- Central Heat System Piping
  23
- Cold Water Make-Up
  23
  - Freeze Protection
    23
- Recognized Chemicals
  23
- Domestic Hot Water Piping (DHW and MLXC)
  23
- Indirect Water Heater Piping
  23
- Condensate Drain
  24
- Piping Schematics
  25
Section 7.

31
Electrical Connections

31
- Main Power
  31
- Pump Connections
  31
- 24Vac Transformer Circuit Breaker
  31
- Central Heat - Call for Heat
  31
- Outdoor Air Temperature Sensor
  31
- Domestic Hot Water Connection
  31
- System Sensor
  31
  - (Lead Lag/Cascading Operation Only)
    31
- External Control Connections
  31
- Ladder Diagram, Connections, and Wiring Diagrams
  32
Section 8.

35
CONTROL Setup and Operation

35
- Digital Display
  35
- CONTROLLER Modes
  36
- User Mode
  37
- Installer Mode
  38
- Service Mode
  39
- Modulation Control
  39
- Pump Control
  39
Section 9.

40
- High Limit
  40
- Stack Temperature
  40
- Domestic Hot Water Temperature
  40
OPERATION Modes

40
Section 10.

43
Set up Instructions

43
- Filling the Boiler System
  43
- Starting the Burner after Set up
  43
- Burner Operation
  43
- Boiler Setup and Adjustment
  44
- Shutting down the Mascot LX
  44
- To Restart the Mascot LX
  44
Section 11.

46
Maintenance

46
- System Maintenance
  46
- Appliance Maintenance and Component Description
  46
- Burner
  46
- Appliance Control
  46
- Ignitor Assembly
  47
- Flame Sensor
  47
- Blower
  47
- Heat Exchanger Coils
  47
- Gas Conversion
  48
Section 12.

49
Troubleshooting

49
- Sequence of Operation
  49
- Short Cycling
  49
- Error Codes
  50
Section 13.

52
Replacement Parts

52
- Exploded Parts Illustrations
  52

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