LAARS Mascot LX MLXC 175 MBH - Install and Operating Manual - Manual (Page 3)

Mascot LX Boilers and Water Heaters
SECTION 8.
CONTROL Setup and Operation
8.1 Digital Display ................................................... 31
8.2 CONTROLLER Modes ..................................... 32
8.3 User Mode ........................................................ 33
8.4 Installer Mode ................................................... 34
8.5 Service Mode .................................................... 35
8.6 Modulation Control............................................ 35
8.7 Pump Control .................................................... 35
8.8 High Limit .......................................................... 36
8.9 Stack Temperature ............................................ 36
8.10 Domestic Hot Water Temperature..................... 36
SECTION 9.
OPERATION Modes
9.1 Hydronic Heating Demand................................ 36
9.2 Hydronic Heating with Outdoor Reset .............. 36
9.3 Hydronic Heating Using External
Modulation Control............................................ 36
9.4 Warm Weather Shutdown ................................. 37
9.5 Domestic Hot Water Demand (MLXC only) ...... 37
9.6 Domestic Hot Water Priority (MLXC only) ........ 37
9.7 Cascade Auto Configuration ............................. 38
SECTION 10.
Set Up Instructions
10.1 Filling the Boiler System ................................... 39
10.2 Starting the Burner after Set Up ....................... 39
10.2.1 Burner Operation ............................................ 39
10.2.2 Boiler Setup and Adjustment .......................... 40
10.3 Shutting Down the Mascot LX .......................... 40
10.4 To Restart the Mascot LX ................................. 40
SECTION 11.
Maintenance
11.1 System Maintenance ....................................... 42
11.2 Appliance Maintenance and Component
Description ........................................................ 42
11.2.1 Burner ............................................................... 42
11.2.2 Appliance Control ............................................. 42
11.2.3 Ignitor Assembly ............................................... 43
11.2.4 Flame Sensor ................................................... 43
11.2.5 Blower ............................................................... 43
11.2.6 Heat Exchanger Coils ....................................... 43
11.2.7 Gas Conversion ................................................ 44
SECTION 12.
Troubleshooting
12.1 Sequence of Operation .................................... 45
12.2 Short Cycling .................................................... 45
12.3 Error Codes ...................................................... 46
SECTION 13.
Replacement Parts
13.1 Exploded Parts Illustrations ............................. 48