Fan; Water Pressure Sensor; Safety And Ignition Module - IBC SL 14-115 G3 Installation And Operating Instructions Manual
Modulating gas boilers
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Also See for SL 14-115 G3:
- Installation & operating manual (124 pages) ,
- Installation and operating instructions manual (90 pages) ,
- Commissioning supplement (7 pages)
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TROUBLESHOOTING
SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
5.2.2 Fan
The fan is controlled by the SIM
5.2.3 Water Pressure Sensor
The water pressure sensor ensures that there is adequate pressure in the heating system
for safe operation. The pressure is displayed in PSI as the default. If the system pressure
should drop below 8PSI the firing rate of the boiler is reduced. If the pressure drops to
4PSI or lower, the boiler will not fire.
Check operation of the sensor by isolating the boiler from its system piping. Close the
system fill valve, and then crack the pressure relief valve. The pressure displayed should
reflect declining pressure. If it remains "fixed", drain the boiler and replace the sensor, or
dislodge any blocking debris from the sensor inlet channel and reinsert.
5.2.4 Safety and Ignition Module (SIM
The SIM
is a safety control that is certified to conform to the UL 60730-5-5 and ANSI
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Z21.20-2014 • CAN/CSA-C22.2 No. 60730-2-5-14 Standards. The low water cutoff
function and the high temperature manual reset function also conform to these standards.
The SIM
directly controls the boiler's gas valve and provides:
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•
Direct spark automatic ignition
•
Flame detection and current measurement
•
Supply water temperature sensing
•
Flue gas temperature sensing
•
Supply water maximum temperature shutdown
•
Flue gas maximum temperature shutdown
•
Low water cut-off.
, and powered via one cable.
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)
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5-3
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Troubleshooting
