Steffes DLF40B - Manual (Page 20)

N.O.
N.O.
N.O.
N.O.
N.O.
N.O.
N.O.
N.O.
BACK VIEW
OF SFIII
UTILITY CONTROL
REVERSING SWITCH
J3­1
J2­1
J4­1
N/A
OVERRIDE
WINTER
SUMMER
Auto
Lo
Hi
R WG C Y
AU
X
Y2Y3
W G B R
TO OUTDOOR
SENSOR
N.O. N.C.
START CANCEL
L
o
w
Vo
ltag
e F
ield
W
iring
Co
nne
ct
io
ns
Installing The Furnace
(cont'd)
19
LOW VOLTAGE ELECTRICAL CONNECTIONS
The outdoor temperature sensor, room thermostat, and peak control signal are low voltage wire connections to
the furnace. All low voltage wiring must be segregated from line voltage circuits in the furnace.
Low Voltage Wiring Diagram
9
NOTES: 1. Low voltage auxiliary control contacts.
a. Y to Y2 contacts open when load control device closes.
b. Y to Y3 contacts close when load control device closes.
2. Auxiliary contacts close during off­peak heat calls.
3. N.O. used for open on­peak load control device (switch closes to charge).
N.C. used for closed on­peak load control device (switch opens to charge).
FIGURE 12