0014_Installation_Operation_Manual
Draft
Page 6 of 22
Copyright 2017 Unifire
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General Product Information
SUPERVISOR I provides all necessary functions for the safe start-up and shutdown of industrial,
natural draft gas fired appliances. Approved to the latest IEC/CSA 60730-2-5 standard the control
module provides factory configured purge, pilot trial for ignition and main trial for ignition
periods, multiple recycle/retrials on flameout, varied flame safeguard options (Ionization rod,
UV/IR scanner, thermocouple), interrupted pilot and direct main ignition options. 24VDC power
supply and low power consumption allows for remote off-the-grid field operation with
aftermarket solar panels or thermoelectric power sources. The module is approved and ready for
use in Class I Zone/Div 2 Hazardous locations.
Designed to be safe, simple and flexible; the module allows the end user to integrate BMS
functionality to natural draft gas fired appliances; quickly, easily and safely. The design of the
module allows for process trips to be wired in series to a permissive input that will prevent
startup of the burners until all permissive inputs are proven. During light-off and once the
burner(s) are in operation the permissive inputs continue to provide a trip mechanism for safe
shutdown of the appliance. With all permissive inputs proven a factory configured timed purge is
invoked either automatically via remote commands or by pressing the front mounted start/reset
button. A completed purge is followed with trial for ignition on either the pilot burner or, in the
case of direct ignition, main burner. On completion of the trial for ignition the module will
energize two status outputs that can be connected to a controlling PLC or direct to the solenoids
of a main burner fuel train.
Beyond the basic startup and shutdown of typical appliances SUPERVISOR I is extended to
include multiple options for flame safeguard. Conventional flame (Ionization) rods are
supplemented with options for Thermocouple based flame detection and use of third party
UV/IR flame scanners. Other options during runtime include configurations for interrupted pilot
ignition and recycles or retrials of ignition on a loss of flame.
The complete sequence of operation and control is clearly indicated on the front panel with 4
simple LED’
s and started automatically or manually via the front mounted START/RESET button.
CAUTION
Prior to powering up the SUPERVISOR I module please ensure that all safety and code
compliance information within this manual is observed.