Digital Ready Unit Mounted Temperature Sensor Specifications - Daikin AVV Installation And Maintenance Manual

Digital Ready Unit Mounted
Temperature Sensor Specifications
A 10 K ohm Negative Temperature Coefficient (NTC)
sensor and a 1 K ohm Positive Temperature Coefficient
sensor is provided for the discharge air, outdoor air and
room air temperature measurement. They are located
next to each other in the air stream as shown in
113. Each is wired to the terminal strip separately so that
the Automatic Temperature Control contractor may select
the appropriate sensor for the application.
10 K ohm NTC Sensor
The 10 K ohm NTC sensor is constructed from stainless
steel with an epoxy seal and twisted wire leads.
Type:
10K ohm @ 25°C
Accuracy: ±0.2°F, 40°F - 80°F
±0.36°F, 32°F - 158°F
1 K ohm PTC Sensor
The 1 K ohm sensor is a shrink-wrap encapsulated, PTC
silicon sensing element with stranded, tinned copper
wire leads (#22 AWG).
Type: 1035 ohm @ 25°C
Accuracy: ±0.9°F, 5°F - 167°F
Table 38: Temperature Sensors Resistance Values
Temperature (°C)
10 K ohm (NTC)
Resistance (ohms)
Temperature (°C)
1 K ohm (PTC)
Resistance (ohms)
IM 817-7
Figure 113: Sensor Locations
Figure
-40 -20 0
337200 97130 32660
-40 -20 0
613 727 855
54
Discharge Air Sensor
Room Air Sensor
Holes in Front
Access Panel
Outdoor Air
Opening
Outdoor Air Sensors
20 25 30
12490 10000 8056
20 25 30
997 1035 1074
40 50 60
5326 3602 2489
40 50 60
1153 1237 1323
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