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Manuals and User Guides for MASCOT MLXH 175 MBH. We have
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MASCOT MLXH 175 MBH manual available for free PDF download: Installation And Operation Instructions Manual
Laars MLXH 175 MBH Installation And Operation Instructions Manual (56 pages)
Brand:
Laars
| Category:
Boiler
| Size: 3.33 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
Hydronic Heating Demand
40
Hydronic Heating with Outdoor Reset
40
Hydronic Heating Using External Modulation Control
40
Warm Weather Shutdown
41
Domestic Hot Water Demand (MLXC Only)
41
Domestic Hot Water Priority (MLXC Only)
41
Cascade Auto Configuration
42
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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