1.1 Boiler Fabrication and Testing
Your boiler was manufactured by Fröling, a world leader in hot water
(hydronic) heating for over 40 years. The P4 Pellet boiler conforms to
traditional high standards for quality and reliability. It offers modern
pellet boiler technology with high operating efficiencies at over 90%. If
treated properly and operated according to the guidelines in this manual
it will provide years of safe, dependable, and economical heating.
P4 Pellet boilers are designed and built in accordance with European
Standard EN 303-5. Safety and performance testing and listing for North
American markets have been performed by OMNI Test Laboratories,
Inc., Portland, Oregon. The boiler is tested and listed to applicable UL,
CAN and other standards. The boiler is not ASME stamped. The installer
should follow local or state installation requirements.
The P4 Pellet boiler is a pellet boiler designed and constructed for highly
efficient combustion of wood pellets.
Do not burn other fuels in the P4 Pellet boiler. The P4 Pellet boiler is not
a self contained weather-tight boiler. It should be installed within the
heated building. P4 Pellet boilers should be installed with a thermal
storage system to prevent short-cycling of the boiler during periods
when the building is not calling for heat.
1.2 Models and Applications
Five P4 Pellet boiler models are available (8/15, 20/25, 30/38, 48/60),
and 80/100 covering an output range between 35,800Btu/hr and
330,000Btu/hr. Models 8/15, and 20/25 is available with a pneumatic
hopper or 280 lb (240 liter) day bin. Specification data for each P4 Pellet
boiler is provided in the Installation Manual. The boilers can be utilized
as a single heat source, or in parallel with another boiler.