Instruction manual
3
DANGER
DO  NOT  store  or  use  gasoline  or  other  ammable  vapors  or  liquids  in  the  vicinity  of  this  or  any  other 
appliance. 
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 boiler before installing, starting-up, operating, maintaining or servicing this 
boiler. Keep this manual and literature in legible condition and posted near boiler 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.
Installation is not complete unless a pressure relief valve is installed into the 3/4" tapping located on 
return injector assembly that was installed into boss on top of rear section - See "Packaged Boiler Assy 
- Trim & Controls", "Unit-Pak Boiler Assy - Trim & Controls" and "Water Boiler Piping" Sections of this 
manual for details.
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. 
This boiler is suitable for installation on combustible ooring. Do not install boiler on carpeting.
Do not tamper with or alter the boiler or controls.
Inspect  ueways  at  least  once  a  year  -  preferably  at  the  start  of  the  heating  season.    The  inside  of 
the combustion chamber, the vent system and  boiler ueways  should be  cleaned if  soot or  scale has 
accumulated.
When cleaning this boiler, take precaution to avoid damage to burner swing door insulation. If damaged, 
or if there is evidence of previous damage, burner swing door insulation must be replaced immediately.
Oil Burner and Controls must be checked at least once a year or as may be necessitated.
Do not operate boiler with jumpered or absent controls or safety devices.
Do not operate boiler if any control, switch, component, or device has been subject to water.
Boiler construction materials, products of combustion and the fuel contain alumina, silica, heavy metals, 
carbon monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful substances which can cause 
death or serious injury and which are known to the state of California to cause cancer, birth defects and 
other reproductive harm. Always use proper safety clothing, respirators and equipment when servicing 
or working nearby the appliance.
This boiler contains very hot water under high pressure.  Do not unscrew any pipe ttings nor attempt 
to disconnect any components of this boiler without positively assuring the water is cool and has no 
pressure.  Always wear protective clothing and equipment when installing, starting up or servicing this 
boiler to prevent scald injuries. Do not rely on the pressure and temperature gauges to determine the 
temperature and pressure of the boiler. This boiler contains components which become very hot when 
the boiler is operating. Do not touch any components unless they are cool.










