Install Manual

04/03/2009 12 EI204
Utility load control – extend the two blue wires to an
appropriate set of wires or contact closure within the power
company control receiver. For electric energy operation (off-
peak) the two blue wires represent a contact closure as
shipped. Do not apply external voltage or external power
to the blue wires, they are simply looking for a closed
contact during off-peak. (figure 8)
- Optional – where load management interrupt
does not apply simply leave the two blue wires
tied together and wire nutted.
- LMC reverse logic – Normal logic NC
(normally closed) is simply the blue and blue/
white wires J3-2 and J3-3. NO (normally open)
logic can be obtained by connecting the
appropriate load control wires between the “X1”
tab and “R” tab while the two blue wires remain wire nutted
together.
- In areas where “peak” control is accomplished by
interrupting the 240 line voltage, other methods must be
used to open the blue/blue white wires. Contact factory
for more information.
Downflow – Horizontal Sensor Probe (figure 9)
Within the right portion of the main control box locate the two
pigtailed red/ white wires with wire nuts on the ends. (See drawing
ES203). Remove the wire nuts, route, and connect in series to this
additional hi-limit probe’s red wires.
Oil Furnace with “T and T” control (figure 10)
information, isolation is required between fan center “W”
and the voltage which will be experienced on oil control “T
and T”. Normally the standard fan center simply passes the
“W” voltage on to the gas valve. Warning: When installing
or wiring an oil furnace, this isolated contact is extremely
important. Unexplainable and strange control reactions have
been experienced when this isolation relay is not installed.
The isolation relay shown on the following drawing can be a
basic 24-volt coil, single contact cube relay or you can order
from Electro Industries – EE-5053 prepackaged relay. If you
use EE-5053 it has wire leads, the connection for the wire
colors are as follows:
- Interface module, W – black/yellow
- Interface module, C – gray
- Oil control, T – yellow/green
- Oil control, T – blue/yellow
- Unused, cap off – orange/black
Fi
g
ure 8
Fi
g
ure 10
Fi
g
ure 9