Operating instruction
EC3-P33 Superheat Controller and
ECD-002 Keypad / Display Unit
Installation in non explosive environment
Emerson Climate Technologies GmbH
www.emersonclimate.eu
Am Borsigturm 31 I 13507 Berlin I Germany
Date: 04.05.2017
EC3-P33_OI_ML_R01_865919.docx
G e n e r a l i n f o r m a t i o n :
EC3-P33
is the superheat controller for systems with flammable refrigerants
(A2L/A3) and able to drive EMERSON Valves EX4-7-…FLR via M12 Connector
ECV05A.
Note: This document contains short form instructions for experienced users.
Warning:
•
EC3-P33 has a potential ignition source and does not comply with ATEX
requirements. Installation only in non-explosive environment.
•
EX4-7…FLR are currently released for R290 in term of compatibility. The
other listed refrigerants are subject to qualification at later stage. No
warranty or product liability if EX4-7…FLR to be used with other
refrigerants stored in software of EC3-P33.
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.
•
Ensure that the system is correctly labeled with applied refrigerant type and
a warning for explosion risk.
•
Do not exceed the specified maximum ratings for temperature (max.+60°C),
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-P33 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-P33 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!
•
Ensure that cables are not mounted near sharp edges.
•
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 :
v
2
:
White wire
4
: Black wire
3
: Blue wire
1
: Brown wire
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; 24 V/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:
EX4-7-…FLR 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.
!
Non-explosiv
environment
