3
Table 2. Technical Specification
Model Number
THD-7052
THD-7053
Part Number
70-520000-001
70-530000-001
Detection
Electronic Heat Detector
Electronic Heat Detector
Approvals
cULus, FM, CSFM, MEA-NYC
cULus, FM, CSFM, MEA-NYC
UL Compatibility I.D.
P56FE1
P56FE1
Listed Spacing
For UL/ULC applications
70 foot (21.3m) centers or 4,900 square feet
(455.2 m
2
)
70 foot (21.3m) centers or 4,900 square feet
(455.2 m
2
)
For FM applications
35 foot (10.7m) centers or 1,225 square feet
(113.8 m
2
)
35 foot (10.7m) centers or 1,225 square feet
(113.8 m
2
)
Nominal Sensitivity
135
o
F (57
o
F) w/15
o
F (8.3
o
F) per minute
Rate-of-Rise
135
o
F (57
o
F)
Standby Voltage (VDC)
Using 2WB
10.2 to 36.8
10.2 to 36.8
Using 4WRB
16.8 to 36.8
16.8 to 36.8
Maximum Current
Standby
70 µA
70 µA
Alarm
100 mA
100 mA
Response Indicators
Quantity
2 external LEDs
2 external LEDs
Standby Condition
One flash every 6 seconds
One flash every 6 seconds
Thermistor Trouble
Double flash every 6 seconds
Double flash every 6 seconds
Alarm Condition
Steady at full brilliance
Steady at full brilliance
Operating Environment
Operating Temperature
32
o
to 100
o
F (0 to 38
o
C)
32
o
to 100
o
F (0 to 38
o
C)
Storage Temperature
-20 to 180
o
F (-29
o
to 82
o
C)
-20 to 180
o
F (-29
o
to 82
o
C)
Relative Humidity
0 to 93% Non-condensing
0 to 93% Non-condensing
Altitude
Up to 7,500 feet (2,286 m)
Up to 7,500 feet (2,286 m)
Physical Characteristics
Material and Finish
High-impact, flame-retardant plastic, off white
High-impact, flame-retardant plastic, off white
Weight
35.3 oz. (110g) w/o base
35.3 oz. (110g) w/o base
Dimensions
Detector Height
1.38 in (35 mm)
1.38 in (35 mm)
Detector Diameter
3.9 in (99 mm)
3.9 in (99 mm)
Base Height
0.43 in (11mm)
0.43 in (11mm)
Base Diameter
5.90 in (150 mm)
5.90 in (150 mm)
