Daikin AVV - Digital Ready Unit Mounted Temperature Sensor Specifications

IM 817-7 54 www.DaikinApplied.com
Digital Ready Unit Mounted
Temperature Sensor Specications
A 10 K ohm Negative Temperature Coefcient (NTC)
sensor and a 1 K ohm Positive Temperature Coefcient
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 Figure
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
Figure 113: Sensor Locations
Discharge Air Sensor
Room Air Sensor
Holes in Front
Access Panel
Outdoor Air Sensors
Outdoor Air
Opening
Table 38: Temperature Sensors Resistance Values
10 K ohm (NTC)
Temperature (°C) -40 -20 0 20 25 30 40 50 60
Resistance (ohms) 337200 97130 32660 12490 10000 8056 5326 3602 2489
1 K ohm (PTC)
Temperature (°C) -40 -20 0 20 25 30 40 50 60
Resistance (ohms) 613 727 855 997 1035 1074 1153 1237 1323