STI 1229HTR240 - Manual (Page 4)

MOUNT BACKBOX TO WALL (Refer to Fig. 1)
1. Remove appliance heater assembly from back box and set aside.
2.
Mount back box in desired location (wall mount only) using the four #10
x 1-1/2” screws and anchors (provided). Drill a 1/4” diameter pilot hole
for plastic anchors at spacing in Fig. 1.
3. Attach conduit hub to a 3/4” NPT nipple and conduit seal fitting to the back
box, top and bottom.
Note: A conduit seal fitting must be used on both top and bottom
conduit entries as close to the unit as possible. Use conduit seal Crouse-
Hinds 3/4” EYSX 21 or equivalent. Conduit should be installed according
to applicable NEC and local codes.
4. Pull wiring into back box.
Note: High Voltage (110 or 240 VAC) wiring must enter thru bottom
conduit and low voltage and
signaling wires must enter thru
top conduit and remain separated
per NFPA 70, NEC, and local codes.
HIGH VOLTAGE WIRING (Refer to Fig. 2)
5. Connect high voltage: Make sure
110 or 240 VAC power is “OFF”.
Refer to high voltage schematic
diagram on page 6.
110 VAC 240 VAC
Pin 6 AC HOT L-1
Pin 5 Neutral L-2
Pin 4 Ground Ground
4
STI-1229HTR Installation Instructions
3/4 in.(25mm) NPT NIPPLE
(NOT PROVIDED)
ENCLOSED BACKBOX
HEATER ASSEMBLY
HIGH VOLTAGE TERMINAL BLOCK
SCREW #8-32 x 3/8 in.
(4) PROVIDED
STROBE APPLIANCE
GASKET (1) PROVIDED
SOLID CLEAR COVER
WASHER (6) PROVIDED
#8-32 x 3/4 in. SOCKET
CAP SCREW (6) PROVIDED
LOW VOLTAGE
ELECTRICAL ENTRY
1/4 in. (6.3mm)
DIA. HOLE
ANCHOR
(4) PROVIDED
SCREW #10 x 1 1/2 in.
(4) PROVIDED
LOW VOLTAGE TERMINAL BLOCK
3/4 in. NPT. NIPPLE
(NOT PROVIDED)
HIGH VOLTAGE
ELECTRICAL ENTRY
APPLIANCE
WIRE
3/4 in. NPT HUB (2) PROVIDED
FIGURE 3
1
HEATER ASSEMBLY
HEATER
OVERTEMP SAFETY
THERMOSTAT
HIGH VOLTAGE
TERMINAL BLOCK
PIN 6
PIN 5
PIN 4
2 A FUSE
CONTROL THERMOSTAT
F
1
2
3
4
5
6
1
2
FIGURE 1
FIGURE 2