LAARS Heating Systems
Page 30
7.3
24 VaC transformer with Integral
Circuit Breaker
24 VAC is supplied by a transformer mounted on the
control panel. All 24 VAC power is supplied through
a circuit breaker that is part of the transformer. The
transformer is then connected to terminal blocks 1
and 2 (TB1 and TB2).
7.4
Signal Connections
See Section 9 for details on the following
connections:
• System sensor
• Call for heat/thermostat
• Outdoor air temperature sensor
• Aquastat for domestic hot water
• External control connections
7.5
optional field Connections
Optional components, such as low water cutoffs,
flow switches, additional high limits and other field
supplied devices can be installed as shown on the
wiring diagram (Fig. 21).
7.6 ladder and Wiring Diagrams
(See Figures 20 and 21.)
Caution
When servicing controls, label all wires prior to
disconnection. Wiring errors can cause improper
and dangerous operation. Verify proper operation
after servicing
table 10 - electrical Data
Voltage
120 V AC
Current - FLA
12 A
Current - Nominal
5A
Summary of Contents for NTV1000
Page 2: ......
Page 35: ...NeoTherm Boilers and Water Heaters Page 31 Fig 20 Ladder Diagram...
Page 36: ...LAARS Heating Systems Page 32 Fig 21 Wiring Diagram...
Page 37: ...NeoTherm Boilers and Water Heaters Page 33...
Page 51: ...NeoTherm Boilers and Water Heaters Page 47 Fig 52 Connection Terminals...
Page 130: ...LAARS Heating Systems Page 126 Fig 140 Machine Frame and Rear Panel 13 3 PARTS ILLUSTRATIONS...
Page 131: ...NeoTherm Boilers and Water Heaters Page 127 Fig 141 Front Panel and Covers...
Page 132: ...LAARS Heating Systems Page 128 Fig 142 Burners and Combustion Chambers...
Page 134: ...LAARS Heating Systems Page 130 Fig 145 Electronic Components...
Page 135: ...NeoTherm Boilers and Water Heaters Page 131 Fig 146 Condensate Trap Fig 147 Control Bezel...
Page 136: ...LAARS Heating Systems Page 132 Fig 148 Flow Switch...
Page 137: ...NeoTherm Boilers and Water Heaters Page 133 This page intentionally left blank...