Table of Contents
Advertisement
Electrical Connections
NOTICE: All field wiring must conform to local, state, and national installation
codes.
A disconnecting switch equipped with overcurrent protection rated at 15 A. (e.g. a time
delay-type fuse or inverse time, circuit breaker) should be installed in the service line for
shutting down and protecting the furnace and electrical system.
Since the furnace is entirely pre-wired at the factory, it is only necessary to connect the
building electrical service lines to the two (2) pigtail wires extending from the junction
box. The junction box is mounted inside the furnace burner compartment or mounted on
the front exterior of the furnace, in the case of the horizontal / counterflow model. The
service lines to the furnace should be no smaller than 14 Ga., insulated copper wire with
a temperature rating of 60ºC, or greater.
Connect an equipment ground wire to the furnace at the junction box. If wiring is run
through metal electrical conduit, it may not be necessary to run a separate equipment
ground wire. Consult local codes and authorities for specific minimum requirements.
A two (2) wire connection to the room thermostat from the oil furnace control is also
necessary. This is typically a low voltage (24 VAC) circuit. Consult the National
Electrical Code, ANSI/NFPA 70-2002, for guidelines for proper wiring methods and
materials for this circuit.
Refer to the electrical diagrams contained in Appendix B of this manual for an electrical
schematic, a connection diagram, and operating instructions.
Room Thermostat
A room thermostat is not furnished with this furnace. However, a thermostat is required
to properly operate the furnace control system in a typical residential heating
application.
The room thermostat should be located on an interior wall in the natural circulating path
of the room air.
The thermostat should not be installed in a location where it is directly exposed to,
• cold air infiltration, i.e. drafts from outside openings such as windows and doors,
• air currents produced by supply air registers, and
• heat from a nearby source, such as a fireplace, electrical appliances, lamps,
solar radiation, a wall enclosing warm air ducts, a chimney, or a flue gas vent.
These phenomena will adversely influence the operation of the thermostat, preventing it
from properly controlling the room temperature. Conversely, avoid installing the room
thermostat in a location where the natural circulation of air is blocked, such as behind
doors, in shelves, or in corners.
14
Hide quick links:
Advertisement
Table of Contents
