Emerson White-Rodgers 24A01 Instructions D'installation page 2

OPERATION
Basic Silent Operator components are a line-to-low volt-
age transformer, a low voltage bimetal heater, an ambi-
ent compensating bimetal, and a normally open SPST
line voltage snap-action switch.
In operation, a circuit is completed through the bimetal
heater as the low voltage room thermostat closes its
contacts. In approximately 45 seconds, the warping
action of the heater closes the line voltage snap-switch to
energize the heating load. When the thermostat opens its
contacts, the bimetal heater cools for approximately 45
seconds before the line voltage switch opens to de-
energize the heating load.
INSTALLATION
The "Level-Temp" can be mounted in any position with-
out affecting the performance.
1. Mounting with the 1/2" male conduit hub:
Relay may be mounted to any standard junction box
or wiring compartment. See drawings under WIRING
DIAGRAMS for a variety of possible mountings.
Depending on the position of the relay on the junction
box or wiring compartment it may be necessary to
remove the break-off mounting tabs.
2. Mounting with the universal mounting tabs:
a. Relay can be mounted to various metal enclo-
sures, ducts, or mounting plates. The universal
mounting tab has several break-offs for 2, 3 or 4
mounting holes.
b. Location of the mounting holes may be simplified
by holding the control against the mounting sur-
face and marking the proper position for drilling the
holes (No. 8 size screws are recommended).
WIRING
All wiring should be done in accordance with local and national electrical codes and ordinances.
MAKE L2 "HOT"
ON 120V MODELS
LOW
VOLTAGE
LOAD
THERMOSTAT
BLUE
RED WHITE
Fig. 3. Diagram of "LEVEL TEMP" Wiring
L1
LINE
YELLOW
L2
BLACK
LINE
TRANSFORMER
YELLOW
BLACK
BLUE
HEATING
LOAD
Fig. 1. Internal wiring of Type 24A01/05
BREAK-OFF TABS
4 1/8"
3 7/16"
2 13/32"
2 11/16"
Fig. 2. Dimensions of Type 24A01/05 Level Temp
LINE
WIRING ENCLOSURE
Fig.4. Electric Duct Heaters
2
WIRING
Line Voltage
Line Voltage Field
Low Voltage
WHITE
RED
LINE VOLTAGE
SNAP SWITCH
(NORMALLY OPEN)
AMBIENT
COMPENSATING
BIMETAL
BIMETAL HEATER
1/2" STD. CONDUIT HUB
7/16"
15/16"
9/16"
3 11/32"
2 1/2"
1 3/8"
15/32"
1 "
9/16"
1 9/16"
HEATING
ELEMENTS
TYPE 24A01
LEVEL TEMP
THERM.