LAARS NeoTherm NTV600 - Install and Operating Manual - Manual (Page 5)

NeoTherm Boilers and Water Heaters
Page 3
SECTION 9.
Modes of Operation
9.1 Hydronic Heating Demand ............................ 40
9.2 Hydronic Heating with Outdoor Reset ........... 40
9.3 Hydronic Heating with Domestic Hot
Water (DHW) Priority ..................................... 40
9.4 Hydronic Heating Using External
Modulation Control ........................................ 40
9.5 Hydronic Heating Using Local Lead-Lag/
Cascading Feature ........................................ 41
9.6 Hydronic Heating Using Local Lead-Lag/
Cascading Feature with Indirect Hot Water ... 41
9.7 Warm Weather Shutdown ............................. 41
9.8 Domestic Hot Water Demand (NTV only) ...... 41
9.9 Domestic Hot Water Heating Using
External Modulation Control .......................... 42
9.10 Domestic Hot Water Heating Using Local
Lead-Lag/Cascading Feature ........................ 42
Section 10.
Operating Instructions
10.1 Filling the Boiler System ................................ 43
10.2 Operating the Burner and Set Up .................. 43
10.2.1 Burner Operation ........................................... 43
10.2.2 Boiler Setup and Adjustment ......................... 44
10.3 Shutting Down NeoTherm ............................. 44
10.4 To Restart NeoTherm .................................... 44
SECTION 11.
Maintenance
11.1 System Maintenance ..................................... 46
11.2 Appliance Maintenance and Component
Description .................................................... 46
11.2.1 Burner ............................................................ 46
11.2.2 Modulating Gas Valve / Venturi ..................... 46
11.2.3 Appliance Control .......................................... 46
11.2.4 Ignitor Assembly ............................................ 47
11.2.5 Flame Sensor ................................................ 47
11.2.6 Transformer with Integral Circuit Breaker ...... 48
11.2.7 Blower ........................................................... 48
11.2.8 Heat Exchanger Coils .................................... 48
11.2.9 Gas Pressure Switches (optional) ................. 49
11.2.10 Gas Conversion ............................................. 49
Section 12.
Trouble Shooting
12.1 Sequence of Operation ................................. 49
12.2 Short Cycling ................................................. 49
12.3 Error Codes ................................................... 49
Section 13.
Replacement Parts
13.1 General Information ....................................... 52
13.2 Parts List ....................................................... 52