Specifications

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SECTION 2 VTG-IOM-2012-1001 INSTALLATION
11. Particulate matter or chemicals (example: perchlorethylene, halogenated
compounds) in the combustion air supply to the boiler will cause damage
or failure to the burner and is not covered under warranty. High-risk
situations for particulate matter to be in the air include construction and
maintenance activities.
12. In Canada, for recommended practice, refer to CSAB1.
¡ Combustion Air Supply From the Boiler Room
Adhere to the following for installation:
1. Adequate combustion air and ventilation must be supplied to the boiler
room in accordance with local codes and NFPA54/ANSI Z233.1, Section 5.3,
Air for combustion and ventilation.
2. The boiler room must meet the NFPA criteria for a non-con ned space.
3. It is important to provide free access of air to the boiler. Per ASME Section
VI Para. 6.04 and NBIC, unobstructed air ventilation openings (one near
ceiling, one near  oor) should be sized on the basis of one square inch
free area per 2000 BTU/HR maximum fuel input of the combined burners
located in the boiler room. This is subject to state and local regulations.
4. Consistent proper ventilation of the boiler room is essential for good
combustion. Install two fresh air openings, one at a low level, 24” (610 mm).
5. Boiler room pressure must be neutral relative to the outdoors.
¡ Air Piped From Outside Boiler Room
Adhere to the following for installation:
1. The combustion air supply can be piped directly to the air inlet (Figure 11)
of the boiler.
2. A rubber air intake coupling is supplied with boilers speci ed for
installation with ducted air supply. It must be used to connect the intake
piping to the boiler air inlet.
3. The air intake must be piped out of the building if the boiler room contains
contaminated air.
4. Air Intake pipes and  ttings shall be Schedule 40 PVC pipe or galvanized
steel. All Schedule 40 PVC pipe,  ttings, primer and cement must conform
to American National Standard Institute and the American Society for
Testing and Materials (ANSI/ASTM standards.)
5. Intake PVC piping must be assembled using cement. This will ensure that
the intake is air tight and will not allow contaminates from the boiler room
into the boiler. The cement must be free  owing and contain no lumps,
undissolved particles or any foreign matter that adversely a ects the joint
strength or chemical resistance of the cement. The cement must not show
gelation, strati cation, or separation that cannot be removed by stirring.
6. Adhere to procedure for cementing joints (per ASTM D2855).
! WARNING
Cements for plastic pipe are
 ammable liquids and should
be kept away from all sources of
ignition. Proper ventilation should
be maintained to reduce the hazard
and to minimize breathing of cement
vapors. Avoid contact of cement with
skin and eyes.
Never install a barometric damper on
 ue systems designed with positive
pressure.
Assure all electrical connections are
powered down prior to attempting
replacement or service of electrical
components or connections of the
boiler.
Do not use the boiler/burner as
support for ducted air piping.
Ducted piping must be supported
independently of the boiler.
Particulate matter or chemicals in
the combustion air supply to the
boiler will cause damage or failure to
the burner and is not covered under
warranty.