LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 4)

LAARS Heating Systems
Section 9 – Setup and Configuration ...............................44
9.1
Review of Lead/Lag Control System ............. 44
9.1.1 About Lead/Lag Operation ............................. 44
9.1.2 Lead/Lag Modulation Cycle ........................... 45
9.1.3 Lead/Lag Domestic Hot Water ....................... 46
9.2 Connection Terminals ..................................... 46
9.3 NeoTherm System Configuration ...................48
9.4 Installation Jobs .............................................. 56
A Note for Systems Using Common
Venting ........................................................... 56
B Naming the Controllers .................................. 56
C Make One Control the Lead/Lag
Master ............................................................. 57
D Disable the Lead/Lag Master Function
on the Lead/Lag Slaves .................................. 58
E Set up the Modbus Control Addressing .......... 60
F Set the Flap Valve IDs .................................... 61
G Disconnecting Unused Operator
Interfaces ........................................................ 65
H Connect the Modbus Wiring........................... 66
I Set the Parameters Used by the
Lead/Lag System ............................................ 66
About the “Time of Day” Function ................ 71
J Install the System Sensor and Adjust
the Setpoint ..................................................... 72
K Set the Lead/Lag Outdoor Reset and
Warm Weather Shutdown ............................... 72
About “Outdoor Reset” .................................. 73
L Building Automation or Multiple Boiler
Control Thermostat Demand ......................... 74
M Building Automation or Multiple Boiler
4-20mA Setpoint Control .............................. 74
N Building Automation or Multiple Boiler
4-20mA Modulation Control .......................... 75
O Combustion Setup Procedure ......................... 75
P Setting the Date and Time on the
System Display ............................................... 79
9.5 Setup for Domestic Hot Water on a
Lead/Lag System ............................................ 81
Setup Type 1 ................................................................ 81
Setup Type 2 ................................................................ 82
Setup Type 3 ................................................................ 83
9.6 Installer Parameters ........................................ 85
Section 10 - Operating Instructions ................................. 92
10.1 Filling the Boiler System ................................ 92
10.2 Initial Operation ............................................. 93
10.2.1 Initial Burner Operation ................................. 93
10.2.2 Combustion Setup Procedure ......................... 93
10.3 Shutting Down the NeoTherm Unit ............... 93
10.4 Restarting the NeoTherm Unit ....................... 93
Section 11 – Maintenance ................................................ 94
11.1 System Maintenance....................................... 94
11.2 Maintenance Notes ......................................... 94
11.2.1 Burner ............................................................. 94
11.2.2 Modulating Gas Valve/ Venturi ...................... 94
11.2.3 Controllers ...................................................... 95
11.2.4 Ignitor Assembly ............................................ 95
11.2.5 Flame Sensor .................................................. 95
11.2.6 Transformer with Integral
Circuit Breaker ............................................... 95
11.2.7 Blower ............................................................ 96
11.2.8 Heat Exchanger Coils ..................................... 96
11.2.9 Gas Pressure Switches (optional) ................... 96
11.2.10 Natural/Propane Gas Conversion ................. 97
Section 12 – Troubleshooting .......................................... 98
12.1 Potential Setup and Synchronization
Problems ......................................................... 98
12.1.1 Controller Synchronization ............................ 98
12.1.2 Flap Valve Status Checks ............................... 99
12.2 About Lockouts, Holds, and Alerts ................ 99
12.2.1 Responding to a Lockout, Hold,
or Alert ............................................................ 99
12.2.2 Viewing the Lockout and Alert
Histories ....................................................... 100
12.3 Troubleshooting Table .................................. 102
12.4 Diagnostic Tests and Input/Output
Indicators ...................................................... 117
12.5 Lead/Lag Slave Diagnostics ......................... 118
12.6 Statistics ....................................................... 118
12.7 Analysis ........................................................ 119
12.8 Operating Sequence ...................................... 119
Section 13 – Replacement Parts ..................................... 122
13.1 General Information ..................................... 122
13.2 Parts List ....................................................... 122
13.3 Parts Illustrations .......................................... 126
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