STI 1229HTR240 - Manual (Page 5)

5
LOW VOLTAGE WIRING (Refer to Fig. 3 & Schematic drawings on Page 6)
6.
Connect Supervisory Module Connect EOL device (not included) between
pins 1 and 2 of low voltage terminal block. Pins 1 and 2 should then be
connected to the fire alarm supervisory control module.
Note: Fire alarm supervisory control module must be of the latching type only.
Pin 1 Alarm Supervisory
Pin 2 Control Module
7. Connect Fan Power
Note: Fan will not operate if polarity is reversed. Refer to low voltage
schematic on page 6.
Pin 3
-24 VDC
Pin 4 +24 VDC
8. Connect strobe appliance power
Pin 5
- 16-33 VDC
Pin 6 +16-33 VDC
9. Attach heater assembly to back box using (4) #8-32 x 3/8” flat head
screws into heater assembly mounting bosses on back box (see Fig. 1).
Make sure all service wiring is gathered away from the heater and be
careful not to pinch wire under heater assembly. Fan must be mounted
toward
top of
enclosure.
10. Wire strobe using
Teflon coated wire
provided. (White-
P o s i t i v e / B l a c k-
Negative)
and
attach to the strobe
mounting bosses
on heater assembly.
11. Record installation
date on label and in
manual (page 2).
12. Install cover and
gasket with (6) #8-
32 x 3/4” socket
cap screws and (6) flat washers as shown in Fig. 4.
13. Turn all power to “ON” position.
Note: Fan runs continuously. This system requires three sources of power:
1. 110 or 240 VAC heater on the load side of the fuse holder.
2. 24 VDC power source for the circulating fan. Check fan to see if
operating; if not check polarity and reverse then try again
3. 16-33 VDC fire alarm notification circuit for strobes and temperature
warning monitor.
EOL
DEVICE
HEATER ASSEMBLY
FAN
LOW VOLTAGE
TERMINAL BLOCK
LOW TEMP
WARNING
FAN POWER
STROBE
POWER
LOW TEMP WARNING
THERMOSTAT
STROBE
(NOT PROVIDED)
STROBE HOOK-UP
WIRE
HEATER ASSEMBLY
MOUNTING SCREW
STROBE MOUNTING BOSS
1
2
3
4
5
6
-
+
+
-
1
2
WARNING LABEL
FIGURE 3