Power Flame Nova Plus, Installation And Operation Manual

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NOVA PLUS Installation & Operation Manual -
POWER FLAME INCORPORATED
DC4 DRAFT CONTROL
ENTER ESC
®
6
Figure 3
Typical Gas Piping Schematic for Model NVC Burner, UL Listed.
8. COMBUSTION AIR REQUIREMENTS
Fresh air required to support combustion, as well as to provide adequate location ventilation,
must be supplied. All types of fuel require approximately 10 cubic feet of standard air (sea level
at 60 ° F) per 1000 BTU’s firing rate, for theoretical perfect combustion. In actual practice, the
premix burner will require approximately 60% more air to achieve the N0x reduction and to
ensure complete combustion, but this can vary substantially with specific job conditions.
Additional air is lost from the boiler room through barometric dampers, draft diverters and similar
venting devices. It is generally accepted that ½ square inch of free air opening (for each burner
in the room) per 1000 BTU/hr firing rate will be adequate. Under no circumstances should a
boiler room be under negative pressure. Jurisdictional authority relating to combustion air and
boiler room ventilation requirements vary widely. In order to make certain compliance, the
controlling authorities should be consulted.
9. BURNER MOUNTING – GENERAL
Provisions should be made to provide adequate space around the burner and associated
equipment to allow for ease of inspection, maintenance and service.
Observe codes for the minimum clearances to combustible materials.
The burner mounting flange must be securely attached to the front plate with suitable gasket or
non-asbestos, high temperature rope packing to prevent any products of combustion from
escaping from the combustion chamber through the burner-boiler mounting flanges. The burner
assembly must be supported at the base of the housing to prevent undue strain on the front
plate. (A mounting pedestal is furnished for this purpose.)
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NOVA PLUS Installation & Operation Manual -
POWER FLAME INCORPORATED
DC4 DRAFT CONTROL
ENTER ESC
®
Item Frequency Checked By Remarks
Flame signal strength Weekly Operator If flame signal meter installed, read and log;
for both pilot and main flames, notify service
organization if readings are very high, very low,
or fluctuating; refer to flame safeguard
manufacturer’s instructions
Pilot turndown tests as required/annually Service Technician Required after any adjustments to flame
scanner mount or pilot burner; verify annually –
refer to flame safeguard manufacturer’s
instructions.
Refractory hold in As required/annually Service Technician See Pilot Turndown Tests
High limit safety control Annually Service Technician Refer to heat exchanger manufacturer’s
instructions
Operating control Annually Service Technician Refer to heat exchanger manufacturer’s
Instructions
Low draft, fan, air pressure, Monthly Operator Refer to this manual and control manufacturer’s
and damper instructions
High & low gas pressure interlocks Monthly Operator Refer to instructions in this manual
Fuel valve interlock switch Annually Service Technician Refer to valve manufacturer’s instructions
Purge switch Annually Service Technician Refer to fuel/air control motor manufacturer’s
instructions
Low fire start interlock Annually Service Technician Refer to fuel/air control motor manufacturer’s
instructions
Automatic changeover control At least annually Service Technician Under supervision of gas utility
(dual fuel)
Inspect burner components Service Technician Refer to this manual and control component
Manufacturer’s instructions
Check blower motor and blower Annually Service Technician Remove and clean
wheel for cleanliness. Remove
and clean as necessary
Remove, inspect and clean gas Annually Service Technician Remove and clean
pilot assembly
Refer to heat exchanger manufacturer’s instructions for general inspection procedures and for specific
testing and inspection of all liquid level controls, pressure/temperature relief and other applicable items.
If you have any questions about the procedures listed above or questions relating to components or
devices on your unit not specifically covered in the above, contact our Service Department at
(620) 421-0480 for assistance.