750-204
Profire D/LND
2-1
CHAPTER 2 Installation
2.1 — Application
Electrical power available is usually 208 volt, 3-phase, 60 cycle, 230/460 volt, 3-phase, 60 cycle or 380 volt,
3-phase, 50 cycle. The control circuit is 115 volt, single phase, 60 cycle or 115 volt, single phase, 50 cycle.
Refer to the electrical schematic diagram shipped with the burner. Power connections are made at the control
panel. Wiring from the panel to burner mounted components is installed at the factory. Wiring from the burner
panel to boiler controls, low water controls, remote compressor motor, and remotely located fuel valves is fur-
nished by the installer.
Automatic over-fire draft control or barometric draft regulators are not usually required except where the system
has a tall chimney. The exact height of a chimney requiring draft control is indeterminate, but draft regulation is
seldom needed for chimneys less than fifty feet high, especially with Scotch Marine or sealed firebox boilers. Fuel
requirements for burners of all sizes are listed in the specifications. Fuel oil piping and gas piping instructions are
described in this chapter.
2.2 — Combustion Chamber Construction
The combustion chamber dimensions should be proportioned to the heating load of the boiler (see Figures 2-1
and 2-2).
To Next Page
Loading...