SECTI
ON
3
: O
PER
AT
ION
29
H2O BOILER
HC SERIES IOM Manual
3.2
PRE-COMMISSIONING
Water connections (Return and Supply Lines)
Purge air from the piping system, and from the boiler/water heater. To purge the unit, run
water through the open coils for at least 5 minutes. The coils are now completely purged.
Gas Connections
All pipe connections should be carried out in strict compliance with all applicable local
codes.
Selection of the gas regulator model and size should be carried out in accordance with the
design requirements.
Conduct a complete leak test on the unit’s gas train, and associated components.
Measure the static pressure upstream of the unit to ensure it is within the prescribed range
of 7” - 14” wc.
Vent Connection
Installation must be carried out in accordance to all applicable local codes and factory
guidelines.
When required, a proper drain should be installed on the vent.
Condensate Line Connection
Inspect the condensate line and ensure it is installed in accordance with the factory
guidelines.
Power Connection
Inspect all wiring connections to the unit and ensure they comply with all applicable local
codes.
Ensure that the appropriate power supply has been connected to the unit (please refer to the
electrical rating on the unit’s nameplate).
Ensure the temporary jumpers have been removed from the unit’s control panel.
If applicable, ensure the external control connections have been wired.
NOTE:
Start-up and commissioning MUST be carried out by a GMI qualified
technician.
WARNING:
Ensure the manual gas valve is closed prior to power being supplied to
the boiler/water heater
D-VAC Sales Inc. Email: [email protected] Tel: (516) 256-3131 www.dvachvac.com
