Horsepower X 33,475 = BTU/hr 
mm =
0.04 in 
Horsepower X 0.299 = GPH 
Liter
= 0.264 gal 
Bar =
14.891 PSI 
PSI =
6.9 kPa 
BTU/hr
= 0.2930 watts 

cu.
in. = 0.004330279 gal 
Watts X .00134 = Horsepower 
Ft oil = 0.43 PSI 

GPH = 140,000 BTU 
Fuel
Oil #2 = Spec Gravity .9 / SSU of 50 @ 70° 
kPa =
0.145 PSI 
Kerosene = Spec Gravity
.82 / SSU of 37 @ 65° 
Meter
= 3.28 ft 

Meter
= 1.1 yd 

Motor Derating Chart
To use 60cy Motor on 50cy Operational Voltage
60cy 230v = 190v200v208v on 50cy Operation
60cy 460v = 380v400v415v on 50cy Operation
60cy 575v = 475v500v520v on 50cy Operation
Motor will maintain nameplate horsepower with a 1.0 service factor
Oil Heat Terminology