STI HK3 - Manual (Page 5)

5
Wiring
7. Wire one channel of the dual monitor module to the low temp warning terminals (pins 1 & 2)
on the 24 VDC terminal block. Wire the other channel to the fire alarm terminals (pins 5 & 6)
on the same terminal block. Add any end of the line devices as required for the alarm system.
8. Connect wires from alarm panel to the dual monitor module according to design specifications.
Connect continuous 24 VDC supply to fan power terminals (pins 3 & 4) of the 24 VDC termi-
nal block.
Note:
1. Fan is polarity sensitive and must be connected correctly for fan to operate.
2. Fan operates continuously.
9. Connect the 110 or 240 VAC supply to the high voltage terminal block pins 4, 5, and 6. Earth
Ground, AC Low, and AC High respectively.
10. Attach the heater and cover assembly to the back box with (4) #8-32 x 3/4” socket cap screws
and (4) #8 flat washers.
11. Record installation date in space provided on the label located on underside of cover. Unit is
ready for testing.
12.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 polar-
ity and reverse, then try again.
3. Fire alarm initiating circuit and temperature warning monitor.
S
#6-32 x 1 in. PAN
HEAD SCREW
(4) PROVIDED
3/8 in. STANDOFF
(4) PROVIDED
DUAL MONITOR
ADDRESSABLE MODULE
(NOT INCLUDED)
24 VDC TERMINAL BLOCK
PULL STATION
(NOT INCLUDED)
#8-32 x 3/8 in.
FLAT HEAD SCREW
SLIDE PLATE
HIGH VOLTAGE TERMINAL BLOCK
FAN
WARM AIR DUCT (DO NOT COVER
WITH PULL STATION)
VENT SLOTS
(DO NOT COVER
WITH PULL STATION)
COVER AND HEATER ASSEMBLY
IN C
ASE
OF
PU
LL
FIR
E
6. Turn assembly over and mount dual monitor module to the backside of the heater assembly
using (4) #6-32 x 1” screws and (4) 3/8” standoffs provided. Replace cover.
FIG. 2