G115 Direct Vent Installation Instructions

8
Boiler Piping.
Install the boiler piping according to the Installation manual furnished with the boiler. The pressure relief
and tridicator should be installed on the provided tappings on the furnished supply manifold. The
pressure relief should be piped to a suitable discharge. Boiler piping and related connections should
conform to accepted industry standards using approved joint sealants and conform with local and State
codes.
Burner Controls
The furnished burner is equipped with a pre-purge and post-purge cycle. The pre-purge is intended to
establish air flow through the boiler prior to oil flow to ensure clean combustion under all circumstances.
The length of the pre-purge cycle is factory set and does not require adjustment.
The post-purge cycle on the burner ensures that after combustion has stopped, the flue products are
discharged to the outside and the venting system is fully cleared of all flue products. The post-purge cycle
is factory set and does not require adjustment.
Fuel Supply Delivery System
The fuel line supplying oil to the burner can be set up as either a one pipe or two pipe system. The use of
a Garber oil filter at the burner is mandatory to prevent nozzle contamination.
3 Operational Procedure
Figure 5: Fuel line installation details.