Operating instruction
EC3-X33 Superheat Controller and ECD-002
Keypad / Display Unit
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Date: 03.04.2017
EC3-X33_OI_ML_R12_865009.docx
G e n e r a l i n f o r m a t i o n :
EC3-X33 is a universal superheat controller in conjunction with EMERSON
Electrical Control Valves EX4...EX8 and FX5…FX9.
Note: This document contains short form instructions for experienced users.
S a f e t y i n s t r u c t i o n s :
•
Read operating instructions thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
•
According to EN 13313 it is intended for use by persons having the
appropriate knowledge and skill.
•
Do not exceed the specified maximum ratings for pressure, temperature,
voltage and current.
•
Before installation or service disconnect all voltages from system and device.
•
Do not operate system before all cable connections are completed.
•
Entire electrical connections have to comply with local regulations.
Note
: The EC3-X33 series contains
a VRLA battery = valve regulated rechargeable
lead-acid battery.
The battery must NOT be disposed of with other commercial
waste. Instead, it is the user’s responsibility to pass it to a designated collection
point for the safe recycling of batteries (harmonized directive 2012/19/EU). For
further information contact your local environmental recycling center.
M o u n t i n g p o s i t i o n :
The EC3-X33 is designed to be mounted onto a standard DIN rail. Mounting
position: on vertical walls, with stepper motor connector on top side only.
M o u n t i n g o f E C D - 0 0 2 :
•
ECD-002 can be installed at any time also during operation.
•
ECD-002 can be mounted in panels with
71x29 mm cutout.
•
Push controller into panel cut-out.(1)
•
Make sure that mounting lugs are flush with
outside of controller housing
•
Insert Allen key into front panel holes and turn
clockwise. Mounting lugs will turn and gradually
move towards panel (2)
•
Turn Allen key until mounting lug barely touches
panel. Then move other mounting lug to the same
position (3)
•
Tighten both sides very carefully until keypad is
secured. Do not over tighten as mounting lugs
will break easily.
E l e c t r i c a l I n s t a l l a t i o n :
•
Refer to the electrical wiring diagram for electrical connections.
•
Do not apply voltage to the controller before completion of wiring.
•
Ground the metal housing with a 6.3 mm spade connector.
•
Keep controller and sensor wiring well separated from mains wiring. Minimum
recommended distance 30 mm.
•
Use a class II category transformer for 24 VAC power supply. Do not ground the
24 VAC lines. We recommend using individual transformers for EC3
controller(s) and for 3
rd
party controllers to avoid possible interference or
grounding problems in the power supply.
•
Connecting any EC3 inputs to mains voltage will permanently damage the EC3.
•
The use of the relay is essential to protect the system in case of power failure if
the communications interface or the ECD-002 are not utilized.
•
If the output relay is not utilized, the user must ensure appropriate safety pre-
cautions are in place to protect the system against damage caused by a power
failure.
•
In order to provide system protection in the event of power loss, it is
recommended to change the battery annually.
Digital input status is dependent to operation of compressor/thermostat
Commander
Operating condition
Digital input (I)
Compressor
Compressor starts
Closed / 24 V (Start)
Compressor stops
Open / 0 V (Stop)
Thermostat
Demand (compressor must be ON)
Closed / 24 V (Start)
No demand
Open / 0 V (Stop)
W i r i n g :
A
:
White wire
B
: Black wire
C
: Blue wire
D
: Brown wire
E
:
Plug cable assembly EXV-Mxx for connection to EX4…EX8 and FX5…FX9
G
:
Remote control panel, system controller
H
:
Alarm relay, dry contact. Relay coil is not energized at alarm or power off.
I
:
Digital input (0V/open = Stop; 24V/closed = Start)
J
:
Transformer Class II, 24 VAC secondary / 25 VA
K
:
Third party controller (can use the analog output signal from EC3)
P r e p a r a t i o n f o r S t a r t - u p :
•
Vacuum the entire refrigeration system
•
Note:
EMERSON Electrical Control Valves EX4…EX8 and FX5…FX9 are
delivered at half open position. Do not charge system before closure of valve.
•
Apply supply voltage 24 V to EC3 while the digital input is 0 V (open). The
valve will be driven to close position.
•
After closure of valve, start to charge the system with refrigerant.
•
Start the system and check the superheat and operating conditions.
!
