Fastrax Hellfire 900, Installation, Operation & Maintenance Instructions Manual

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E. CONTROLS & INDICATIONS
E.1 AAR Signal Wiring - For non SCADA installations
Table 4 – AAR Signal Wiring
Terminals Label Description
A1 - A2 REMOTE START A contact closure across these terminals starts the heater when the heater is in REMOTE RTC mode.
A3 - A4 RUN Dry contact closes to provide a run indication.
A5 - A6 ALARM Dry contact closes to provide alarm indication.
A7 - A8 FORCE OFF Default is closed. If FORCE OFF function is desired, remove shorting link and replace with customer
supplied relay contact. Open contact disables heater.
A9 - A10 TANK VALVE These terminals are intended to operate a 120V AC gas supply solenoid shut off valve. They energize
when the motor contact closes.
A11 RS-485 (+) Communications, RS-485 positive terminal (for RCMS operation only)
A12 RS-485 (-) Communications, RS-485 negative terminal (for RCMS operation only)
E.2 Controller
1. The controller manages the operation of the heater and
allows it to either operate on its own or be part of a
network of heaters.
2. The controller monitors various inputs, controls the heater
functions, communicates status and provides indication
LEDs.
3. The controller is DIN rail mounted and all wiring
connections are made with plug connectors to allow quick
replacement in the event of a failure.
4. With the addition of the EMS package, a stand alone
heater can operate automatically based on weather
conditions, or when connected to a network, act as a
weather station providing input to a SCADA system.
5. Its’ RS-485 serial communications port allows the heater
to interface with SCADA systems, and be operated and
managed by a Remote Control and Monitoring System,
such as the Fastrax®
RCMS.
NOTE:
Controllers are
not
interchangeable between HELLFIRE
400 (24V AC) and HELLFIRE 900 (120V AC).