LAARS NeoTherm LC NTV1700 - Install and Operating Manual - Manual (Page 3)

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 NTH Lead/Lag with Indirect
Domestic Hot Water ................................ 46
9.2 Connection Terminals ............................. 46
9.3 NeoTherm LC System Configurations .. 46-54
9.4 Installation Jobs ...................................... 55
A Note for Systems Using Common
Venting .................................................... 55
B Naming the Controllers ........................... 55
C Make One Control the Lead/Lag
master ..................................................... 56
D Disable the Lead/Lag Master Function
on the Lead/Lag Slaves .......................... 57
e Set up the modbus control addressing .. 58
f Set the flap Valve IDs ............................ 59
G Disconnect Unused operator
Interfaces ................................................ 63
h connect the modbus Wiring ................... 63
I Set the Parameters Used by the
Lead/Lag System .................................... 64
About the “Time of Day” Function ........... 68
J Install the System Sensor and Adjust
the Setpoint ............................................ 68
K Set the Lead/Lag Outdoor Reset and
Warm Weather Shutdown ....................... 68
About “Outdoor Reset” ........................... 69
L Building Automation or Multiple Boiler
Control Thermostat Demand ................. 70
M Building Automation or Multiple Boiler
4-20mA Setpoint Control ....................... 70
N Building Automation or Multiple Boiler
4-20mA Modulation Control .................... 71
O Combustion Setup Procedure ................ 71
P Setting the Date and Time on the
System Display ....................................... 76
9.5 Setup for Domestic Hot Water on a
Lead/Lag System .................................... 77
Setup type 1 ........................................... 77
Setup type 2 ........................................... 78
Setup type 3 ........................................... 79
9.6 Gateway connections to a
Building Automation System ................... 80
9.7 Setup for high altitude operation -
nt 1700 only .......................................... 80
9.8 Installer Parameters .......................... 81-87
Section 10 -
InItIal StartUp InStrUctIonS ...................... 88
10.1
Filling the Boiler System ......................... 88
10.2 Initial operation ...................................... 89
10.2.1 Initial burner operation ........................... 89
10.2.2 Combustion Setup Procedure ................ 89
10.3
Shutting Down the NeoTherm LC ........... 89
10.4 Restarting the NeoTherm LC .................. 89
Section 11
maIntenance ..................................................... 90
11.1
System Maintenance .............................. 90
11.2 maintenance notes ................................. 90
11.2.1 burner ..................................................... 90
11.2.2 Modulating Gas Valve/ Venturi ................ 90
11.2.3 controllers .............................................. 91
11.2.4 Ignitor Assembly ..................................... 91
11.2.5 Flame Sensor ......................................... 91
11.2.6 Transformer with Integral
circuit breaker ........................................ 91
11.2.7 blower ..................................................... 92
11.2.8 heat exchanger coils ............................. 92
11.2.9 Gas pressure Switches (optional) .......... 92
11.2.10 Natural/Propane Gas Conversion ......... 93
11.2.11 condensate trap .................................. 93
11.2.12 Battery (Date & Time Back-Up) ............ 93
Section 12
troUbleShootInG ........................................... 94
12.1
potential Setup and Synchronization
Problems ................................................ 94
12.1.1 controller Synchronization ..................... 94
12.1.2 flap Valve Status checks ....................... 95
12.2
about lockouts, holds, and alerts .......... 95
12.2.1 responding to a lockout, hold,
or alert .................................................... 95
12.2.2 Viewing the lockout and alert
histories .................................................. 96
12.3 troubleshooting tables (all codes)......98-112
12.4 Diagnostic Tests and Input/Output
Indicators ...............................................113
12.5 Lead/Lag Slave Diagnostics ..................114
12.6 Statistics ................................................114
12.7 analysis .................................................114
12.8
control Snapshot ...................................115
12.9 operating Sequence ..............................115
Section 13
replacement partS .......................................118
13.1
General Information ...............................118
13.2 parts list ................................................118
13.3 parts Illustrations .................................. 124
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