Crown Boiler 24-07 - Manual (Page 4)

4
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, personal injury or loss of life. Failure to follow all instructions in the proper order
can cause personal injury or death. Read and understand all instructions, including all
those contained in component manufacturers manuals which are provided with the
appliance before installing, starting-up, operating, maintaining or servicing this appliance.
Keep this manual and literature in legible condition and posted near appliance for reference
by owner and service technician.
This boiler requires regular maintenance and service to operate safely. Follow the
instructions contained in this manual. Installation, maintenance, and service must be
performed only by an experienced, skilled and knowledgeable installer or service agency.
All heating systems should be designed by competent contractors and only persons
knowledgeable in the layout and installation of hydronic heating systems should attempt
installation of any boiler. It is the responsibility of the installing contractor to see that all
controls are correctly installed and are operating properly when the installation is
completed. Installation is not complete unless a pressure relief valve is installed into the
specified tapping located at the rear of appliance - See Section III of this manual for details.
This boiler is suitable for installation on combustible flooring. Do not install boiler on
carpeting. Do not operate on floors where heat affected material is below.
Do not tamper with or alter the boiler or controls. Retain your contractor or a competent
serviceman to assure that the unit is properly adjusted and maintained.
Clean boiler at least once a year - preferably at the start of the heating season to remove
soot and scale. The inside of combustion chamber should also be cleaned and inspected
at the same time.
Have Burner and Controls checked at least once a year or as may be necessitated.
Do not operate unit with jumpered or absent controls or safety devices.
Do not operate unit if any control, switch, component, or device has been subject to water.
Return water cannot be lower than 135°F for prolonged periods of time. Operation under
these conditions will result in sustained condensing within the combustion chamber and
potentially reduce boiler longevity.
In addition, the return water cannot be introduced into the boiler if it is more than 40°F less
than the idle boiler temperature. Continued operation under these conditions may result in
premature boiler failure through thermal shock.
Example: A boiler that has been idle for some time since the last heat demand cycle may
have it's boiler water temperature reduced to 150°F. The return temperature from the next
zone activation cannot be less than 110°F.
If the above conditions exist, an RTC system must be installed to protect the boiler from
sustained condensing operation and thermal shock.
DANGER
DO NOT store or use gasoline or other flammable vapors or liquids in the vicinity of this or any
other appliance.