Laars LMC Series Manuals

Manuals and User Guides for Laars LMC Series. We have 2 Laars LMC Series manuals available for free PDF download: Installation And Operation Instructions Manual, User Manual

Laars LMC Series Installation And Operation Instructions Manual (52 pages)

Wall-Mounted Modulating Boiler 125 MBTU/h and 125 MBTU/h, Combination Boiler and Water Heater 125 MBTU/h

Brand: Laars | Category: Boiler | Size: 4.13 MB

Table of Contents
2
Section 1.

4
General Information

4
- Introduction
  4
- Rating Plate
  4
- Model Nomenclature
  4
- Start up / Shut down Instruction (Decal)
  5
- Unpacking
  5
- Warranty
  5
- Product Overview
  6
- Appliance Overview
  6
- Dimensions
  7
Section 2.

8
Locating the Appliance

8
- Locating Appliance for Correct Vent Distance from Outside Wall or Roof Termination
  8
Section 3.

10
Venting and Combustion Air

10
- Combustion Air
  10
- Combustion Air from Room
  10
- Ducted Combustion Air
  10
- Venting (Exhaust)
  11
- Side Wall Vent Terminal
  12
- Side Wall Combustion Air Terminal
  12
- Vertical Vent Terminal
  12
- Vertical Combustion Air Terminal
  12
- Installations in the Commonwealth of Massachusetts
  12
- Common Vent Test
  14
Section 4.

16
Gas Supply and Piping

16
Section 6.

17
Section 5.

17
Pump Capacity

17
- Mascot II Heating System Pump Capacity
  17
Water Connections

17
- Central Heat System Piping
  17
- Cold Water Make-Up
  17
- Freeze Protection
  18
- Suggested Piping Schematics
  18
- Recognized Chemicals
  19
- Domestic Hot Water (DHW) Piping (LMC)
  19
- Condensate Drain
  19
Section 7.

25
Electrical Connections

25
- Main Power
  25
- Pump Connections
  25
- 24Vac Transformer Circuit Breaker
  25
- Central Heat - Call for Heat
  25
- Outdoor Air Temperature Sensor
  25
- Domestic Hot Water Connection
  25
  - System Sensor
    25
  - (Lead Lag/Cascading Operation Only)
    25
- External Control Connections
  25
- Wiring Diagrams
  26
Section 8.

28
Control Setup and Operation

28
USER INTERFACE and Digital Display Navigation

28
- Ignition Control- Sequence of Events
  29
- Modulation Control
  29
- Pump Control
  29
- High Limit
  29
  - Stack Temperature
    29
- Domestic Hot Water Temperature
  29
- Lead Lag / Cascading
  29
- Lead Lag Setpoint
  29
- Lead Lag Master/Slave Selection
  29
- Lead Lag Address
  29
- Hydronic Heating Demand
  30
- Hydronic Heating with Outdoor Reset
  30
- Hydronic Heating Using External
  30
- Modulation Control
  30
- Hydronic Heating Using Local Lead-Lag/Cascading Feature
  31
- Warm Weather Shutdown
  31
- Domestic Hot Water Demand (LMC Only)
  31
Modes of Operation

30
Section 9.

30
Section 10.

32
Set up Instructions

32
- Filling the Boiler System
  32
- Starting the Burner after Set up
  32
- Burner Operation
  32
- Boiler Setup and Adjustment
  33
- Manifold Pressure Check
  33
- Shutting down Mascot II
  33
- To Restart Mascot II
  33
Section 11.

35
Maintenance

35
- System Maintenance
  35
- Appliance Maintenance and Component Description
  35
- Burner
  35
- Appliance Control
  35
- Ignitor Assembly
  35
- Flame Sensor
  36
- Blower
  36
- Heat Exchanger Coils
  36
- Gas Conversion
  36
Section 12.

37
- Sequence of Operation
  37
Trouble Shooting

37
- Short Cycling
  37
Replacement Parts

40
Section 13

40
- General Information
  40
- Parts List
  40

Laars LMC Series User Manual (9 pages)

Modulating Boiler 125 MBTU/h, Combination Boiler and Water Heater

Brand: Laars | Category: Boiler | Size: 1.05 MB

Laars Categories

Boiler Water Heater Industrial Equipment Swimming Pool Heater Heater

More Laars Manuals

Laars LMC Series Manuals

Laars LMC Series Installation And Operation Instructions Manual (52 pages)

Table of Contents

Section 1.

General Information

Section 2.

Locating the Appliance

Section 3.

Venting and Combustion Air

Section 4.

Gas Supply and Piping

Section 6.

Section 5.

Pump Capacity

Water Connections

Section 7.

Electrical Connections

Section 8.

Control Setup and Operation

USER INTERFACE and Digital Display Navigation

Modes of Operation

Section 9.

Section 10.

Set up Instructions

Section 11.

Maintenance

Section 12.

Trouble Shooting

Replacement Parts

Section 13

Laars LMC Series User Manual (9 pages)

Table of Contents

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