Daikin ERQ Service Manual page 75

I
NSTALLATION OF THERMISTORS
Refrigerant thermistors
Location of the thermistor
A correct installation of the thermistors is required to ensure a good
operation:
1. Liquid (R2T)
Install the thermistor behind the distributor on the coldest pass of
the heat exchanger (contact your heat exchanger dealer).
2. Gas (R3T)
Install the thermistor at the outlet of the heat exchanger as close
as possible to the heat exchanger.
Evaluation must be done to check if the air handling unit is protected
against freeze-up.
Execute test operation and check for freeze-up.
1 Liquid R2T
2 Gas R3T
Installation of the thermistor cable
1 Put the thermistor cable in a separate protective tube.
2 Always add a pull-relief to the thermistor cable to avoid strain on
the thermistor cable and loosening of the thermistor. Strain on
the thermistor cable or loosening of the thermistor may result in
bad contact and incorrect temperature measurement.
4 5
EKEQFCBV3 + EKEQDCBV3
Option kit for combination of Daikin condensing units
with field supplied air handling units
4PW52446-1
1
1 2
°
Fixation of the thermistor
■
Put the thermistor wire slightly down to avoid water
accumulation on top of the thermistor.
■ Make good contact between thermistor and air
handling unit. Put the top of the thermistors on the air
handling unit, this is the most sensitive point of the
thermistor.
1 Most sensitive point of the thermistor
2 Maximize the contact
1 Fix the thermistor with insulating aluminum tape (field supply) in
order to ensure a good heat transference.
2 Put the supplied piece of rubber around the thermistor
2
(R2T/R3T) in order to avoid loosening of the thermistor after
some years.
3 Fasten the thermistor with 2 tie wraps.
4 Insulate the thermistor with the supplied insulation sheet.
Air thermistor (only for EKEQDCB)
The air thermistor (R1T) can be installed either in the room that needs
temperature control or in the suction area of the air handling unit.
For room temperature control the delivered thermistor
NOTE
(R1T) can be replaced by an optional remote sensor kit
KRCS01-1(A) (to be ordered separately).
: http://splitoff.ru/tehn-doc.html
1 2
4 5
°
Installation and operation manual
65