A52x Series Electronic Refrigeration Controller with Adaptive Defrost Technical Bulletin
22
Setting Up the System Components
To define the sensors, evaporator fan motors, defrost system type, and defrost termination type on the controller,
navigate to the high-level
SYSTEM SETUP
screen and press
SET.
To scroll through the
SYSTEM COMPONENT
screens and options, tap the
DOWN
and
UP
keys.
Note:
The selections you make in the following setup screens determine many of the setup screens that appear
on the
REFRIGERATION SETUP
and
DEFROST SETUP
menu flows.
SET
SET
To set the Sensor 1 offset value, select the
offset value and press
SET.
The offset
range is -5F
o
to 5F
o
.
SET
SET
To set a Sensor 2 sensor type, select
A99, NON
(None or no sensor), or
NTC
and press
SET.
SET
SET
SET
SET
To set an evaporator fan motor type,
select
1 SPD
(single-speed fan) or
2 SPD
(two-speed EC motor fan) and press
SET.
To set the defrost type, select
OFF/CYC
(off-cycle passive defrost)
, HOT/GAS
(hot
gas defrost), or
ELC/TRC
(electric
resistive heat) and press
SET.
To set a defrost termination type, select
TI/ME
(time-based termination),
HV/BIN
(high-voltage binary temperature switch),
or
TE/MP
(temperature-based termination)
and press
SET
.
Note: DEFROST TERM
TYPE
screens do not appear when the
defrost type is
OFF/CYC
.
SET
SET
SET
SENSOR1: TYPE
A99
EVAP FAN TYPE
SET
DATE/TIME
SET
SENSOR 1: SETUP
SET
SENSOR1: TYPE
SET
SET
SET
SN1: OFFSET
SET
SN1: OFFSET
0
o
SET
SENSOR 2: SETUP
SET
SENSOR2: TYPE
SET
SENSOR2: TYPE
A99
SN2: OFFSET
SET
SN2: OFFSET
0
o
EVAP FAN TYPE
1
SPD
DEFROST TYPE
OFF
CYC
DEFROST TYPE
SET
DEFROST TERM
TYPE
TI
ME
DEFROST TERM
TYPE
SET
To set a Sensor 1 sensor type, select
A99
or
NTC
(Negative Temperature
Coefficient) and press
SET
.
SYSTEM SETUP
SET
SET
SET
SET
To set the Sensor 2 offset value, select the
offset value and press
SET.
The offset
range is -5F
o
to 5F
o
.
In the
DATE/TIME
setup start screen, scroll to the
SENSOR 1: SETUP
screen and
press
SET.
QREV/PSHC
SET
