IOM GMI 2M & 2ML Nov 2010.doc
26
3.2 PRE-COMMISSIONING
I: Water connections (Return and Supply Lines)
¾ Purge air from the piping system, and from the boiler/water heater.
To purge the unit, close 4 of the twelve purge valves and run water through the
open coil for at least five minutes. The coil is now completely purged. Repeat
the process for the remaining 4 coils, until all 5 coils are completely purged.
II: Gas Connections
¾ All pipe connections should be carried out in strict compliance with all
applicable local codes.
¾ Selection of the gas regulator model and size should be carried out in
accordance with the design requirements.
¾ Conduct a complete leak test on the unit’s gas train, and associated components.
¾ Measure the static pressure upstream of the unit to ensure it is within the
prescribed range of 8” - 14 ” wc.
III: Vent Connection
¾ Installation must be carried out in accordance to all applicable local codes and
factory guidelines.
¾ When required, a proper drain should be installed on the vent.
IV: Condensate Line Connection
¾ Inspect the condensate line and ensure it is installed in accordance with the
factory guidelines.
NOTE
¾
If as a result of mal-functioning of the temperature controller
the discharge water temperature increases above that of the
high limit temperature switch, the unit will automatically shut
down and will not re-start until said switch is manually re-set.
To Next Page
Loading...