Fulton VMP Hot Water (VMPW) - Manual (Page 36)

© The Fulton Companies 2012
MAINTENANCE
VMPW-IOM-2012-1001
SECTION 4
4-6
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WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
Follow proper lockout / tag out
procedures for the electrical, gas and
water connections. Use caution when
lifting heavy parts.
Ð
CAUTION
All maintenance procedures should
be completed by trained personnel.
Appropriate training and instructions
are available from the Fulton Service
Department at (315) 298-5121 or your
local Fulton Thermal Representative..
After a new Fulton Boiler has been in
operation for several months, pieces
of burned metal will be found in the
space at the bottom of the boiler. These
pieces of metal are the remains of a
light gauge metal form which was
used during manufacture for forming
the boiler insulation. This is a normal
condition and does not aff ect the
effi
ciency or the life of the boiler in any
way.
Procedure for Primary Air Adjustment/Inspection
The primary air adjustment control is located at the top righthand side of the
burner assembly. This damper-type air controller is used to introduce air to
the fuel supply of the burner. The purpose of the primary air adjustment is to
proportionally divide the air to the center or outer fi re chamber.
It is important to the combustion process to maintain proper air mixtures
between the outer service and the center of the blast tube area. Fire should be on
the outside wall and not the blast tube area. Damper positions are as follows:
Open: Most of the air is forced down the blast tube, and less air is going
down the outside wall of the defl ector face and fi re chamber.
Closed: Less air is forced down the blast tube, and most of the air is going
down the outside wall of the defl ector face and fi re chamber.
NOTE: If it is necessary to close the damper due to a rumbling fi re, close it slowly
and no more than 1/4th of the distance of the swing of the damper assembly.
Perform inspections as follows:
1. Visually inspect down the blast tube. If heat, fl ames, or fumes are backing
up through the burner plate area, the damper must be opened up.
2. Visually confi rm, via the sight glass, that fi re is completely covering the
walls. If the fi re is tunneling down or is not on the outside wall, effi ciency
will drop. If required, use a micro-amp meter to verify fi re signal as damper
is moved. Adjust as necessary.
Procedure for Secondary Air Adjustment/Inspection
The secondary air adjustment, or main air control, is located at the fan housing
face. This control is used to supply the burner with excess air needed for good
combustion.
It is important to ensure that the lowest level of excess oxygen is present, while
still maintaining a high level of carbon dioxide and no carbon monoxide. It is
best to measure the fl ue gas burn with the stack in excess of 420 F (216 C).
Perform inspections as follows:
1. Use an O2 or CO2 test kit to determine the percent of excess air in the
combustion mixture. Adjust main air control as needed to reach optimal
effi
ciencies. Generally a boiler stack area is used to measure the percent of
oxygen and carbon dioxide in the fuel.