Plum ecoLAMBDA User manual

MODULE
ecoLAMBDA ver.2
ISSUE: 1.0_EN
02-2021
TO OPERATE THE LAMBDA PROBE
INSTALLATION MANUAL

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ELECTRIC DEVICE UNDER VOLTAGE!
Before any action related to the power supply (cables
connection, installation, etc.) check if the controller is not
connected to the mains!
Installation should be done by a person with appropriate
electrical qualifications. Improper cables connection could result
in damage to the controller.
The controller cannot be used in steam condensation
conditions and cannot be exposed to water.

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TABLE OF CONTENTS
1. SAFETY ...................................................... 4
2. GENERAL INFORMATION ............................. 4
3. DIRECTIVE WEEE 2012/19/EU ..................... 4
4. TECHNCIAL DATA ....................................... 5
5. SET CONTENTS........................................... 5
6. MOUNTING THE MODULE ............................ 5
6.1. Installation and use of Lambda probe .... 5
6.2. Module installation ............................... 7
6.2.1. Connectors support ........................... 7
6.2.2. Supply connection............................. 7
6.2.3. Transmission connection .................... 7
6.2.4. Connecting Lambda probe to the module7
7. FUSE REPLACEMENT ................................... 8
8. ELECTRICAL SCHEME .................................. 9

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1. SAFETY
The module can only be used within the
household and similar.
The module should be installed by a
qualified and authorized installer,
according to the requirements of EN
60335-1 standard.
2. GENERAL INFORMATION
ecoLAMBDA ver. 2 module is used for
measuring the oxygen content in exhaust
fumes. The measurement results are sent via
RS485 transmission to the controllers
cooperating with the module, whose task is to
maintain the oxygen content and temperature
of the exhaust fumes at a preset level.
The opeating instructions for the module are
described in the manuals of the individual
controllers, to which the module is attached.
Example of ecoLAMBDA module connection.
3. DIRECTIVE WEEE 2012/19/EU
Purchased product is designed and
manufactured with the highest quality materials
and components, which are recyclable and
reusable.
The product meets the requiremenrs of the
Directive of the European Paliament and of
the Council 2012/19/EU of 4 July 2012 on
waste electrical and electronic equipment
(WEEE), according to which it is marked by the
symbol of crossed-out wheeled bin (like below),
meaning that product is subjected to separate
collection.
Responsibilities after finishing a period of
using product:
• dispose of the packaging and product at the
end of their period of use in an approopriate
recycling facility,
• do not dispose of the product with other
unsorted waste,
• do not burn the product.
By adhering obligations of waste electrical
and electronic equipment controlled disposal
mentioned above, you avoid harmful effects on
the environment and human health.

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4. TECHNCIAL DATA
Measurement
parameters
- measurement range:
0..21% O2,
- accuracy ±1% O2and it
refers to the module input
itself, and does not consider
the accuracy of the
connected probe.
Lambda probe
support
NGK, type ZFAS-U2
Data transmission
Standard RS485
Supply
~230 V, 18 W, 50 Hz
Terminal load
capacity
Max. 2A
Operating
conditions
- temp.: 0…60°C,
- humidity 10…90%, without
steam condensation.
Transport and
storage conditions
-10…+60°C
Housing
protection level
IP20 –after enclosure
Connectors
- screw terminals on mains
voltage side: 2,5 mm2,
- screw terminals on signal
side: 1,5 mm2
Nominal surge
voltage
2500 VAC
Standards
PN-EN 60730-2-9
PN-EN 60730-1
Software class
A
Protection class
class II
Contamination
level
2nd degree, according to PN-
EN 60730-1
Module weight
0,6 kg
Dimensions
140 mm x 90 mm x 65 mm
5. SET CONTENTS
- ecoLAMBDA ver.2 module
- NGK Lambda probe
- Module installation manual
- Transmission cable with connectors
1 pc
1 pc
1 pc
1 pc
6. MOUNTING THE MODULE
For safety reasons against shock, the module
has been designed to be used in the
environement, where conductive contaminants
may be present. In addition, the module cannot
be used in steam condensation conditions or be
exposed to water.
6.1.Installation and use of Lambda probe
The NGK Lambda probe should be installed
on the exhaust outlet (chimney or boiler flue).
A place to install the Lambda probe.
The installation should be performed in a
place where the fumes temperature is the
highest, however does not exceed 700°C –
higher temperature will damage the probe.
The probe installation position on the exhaust
outlet should be such that the probe axis was
deviated from the horizontal level by an angle
no less than 10°, but no more than 15° from the
vertical.
Lambda probe installation.
The NGK Lambda probe is equipped with a
threaded M18x1,5 connection. It should be
compatible with the nozzle welded or screwed
into the installation of exhaust outlet. The shape
of recommended connection nozzle is presented
in the figure below. The recommended probe
tightening torque is 40..60 Nm.
Acceptable angles
Pipe
Proper position
Pipe

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Caution for risk of burns. The
probe’s tip connected to the module
may reach a temperature of several
hundred ºC.
Recommended shape of probe’s connection nozzle.
Maximum acceptable operating temperatures
of NGK Lambda probe:
600°C – for the probe and its metal parts,
200°C – for the cable on section from probe
to the plug,
120°C – for the probe’s plug,
60°C – for the cable between probe’s plug
and the module.
Lambda probe tip should be additionally
protected against accumulation of soot by a
threaded sleeve with a ring made according to
the figure below.
Lambda probe thermowell.
A properly secured probe can be embedded
in the duct or flue, according to the figures
below.
The minimum installation distance
of Lambda probe from the exhaust
fan is 150 mm.
Method of Lambda probe thermowell installation.
Usage conditions of NGK Lambda probe:
the probe must not be left in the presence of
the flue gas flowing around it without being
powered by the module.
protect the probe from steam condensation.
Noncompliance to the above requirements will
shorten the life or even damage the Lambda
probe.
Exhaust flow direction
scarf

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After powering the module and up
to a few minutes after it is turned
off, the Lambda probe is still heated
up to a high temperature. Do not
touch the heated sensor or allow it
to come in contact with flammable
elements. Do not use the sensor
near flammable luquids or gases.
Noncompliance to these
recommendations can result in
severe scalding and fire.
6.2. Module installation
The ecoLAMBDA ver.2 module is designed for
enclosure. A standard installation housing can
be used for enclosure of eight modules.
The module should be installed so that:
a degree of protection corresponding to the
environmental conditions was provided,
it provided protection against dust and
water,
the accepted operating temperature was not
exceeded,
the air exchange in the housing was
ensured,
the access to hazardous parts was
prevented,
the electrical installation, to which the
module is connected, has a device enabling
disconnection of both poles of mains supply,
according to the regulations concerning the
construction of such installation.
the connecting cables should be enclosed or
attached to the fixed elements in a way that
no mechanical stresses can occur in relation
to the cables.
Module installation.
Before placing the module on the TS35
mounting rail, lift the latches using scredriver.
After it is placed on the rail, press the latches
back to their original position. Ensure, that the
device is securely attached and it cannot be
removed from the rail without the use of a tool.
6.2.1. Connectors support
The ecoLAMBDA ver.2 module is equipped
with screw terminals adapted to accept the cable
with a ferrule ending. The range of permissible
cross-sectional areas to connect terminals is
presented in the table below:
Circuit type
Cable cross-
section
Mains circuits
0,5÷2,5 mm2
Low voltage circuits
0,25÷0,75 mm2
The length of stripped wire should be 6÷7 mm.
6.2.2. Supply connection
The device should be installed with
mains supply disconnected!
The module is designed for 230 VCA, 50 Hz
supply. The power supply is connected to L, N
terminals, in accordance with the electrical
scheme. The supply cables should be routed in
a way preventing them to come in contact with
the cables connected to low voltage
components, additionally all cables cannot come
in contact with surfaces that exceed theit
nominal temperature.
For safety reasons the module has
to be implicitly connected to the 230
VAC power network, keeping the
proper connection sequence of L
phase and N neutral wires. Make
sure that the wires L and N have not
been switched within the electrical
installation of the building, e.g. in
the electrical socket or distribution
box.
6.2.3. Transmission connection
Communication of the ecoLAMBDA ver.2
module with other devices is established via
RS485 transmission connector. When
connecting the transmission, pay attention to
keep proper polarity of D+, D- signals between
the module and other devices and the cross-
section of connection cable wires should be min.
0,5mm2.
6.2.4. Connecting Lambda probe to the
module
The ecoLAMBDA ver.2 module cooperates
with the NGK Lambda probe type ZFAS-U2.
Using Lambda probe of other type does not
guarantee the reliability of measurements.

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Connection of module to Lambda probe
should be made in accordance to the below table
and electrical diagram.
Terminal
Designation
Wire color
Probe type: NGK ZFAS-U2
7
UN
Grey
8
VM
Black
9
IA
Red
10
IP
White
11
-
Brown
12
+
Blue
7. FUSE REPLACEMENT
Before replacing the fuse disconnect
the mains supply from the module.
The mains fuse is located inside the module
housing on electrical board. The fuse used here
is a 1,25 A / 250 VAC, fine fuse, 5 mm x 20 mm,
type 215P.
In order to remove the fuse, unscrew the
screws of the module’s housing and take off its
top cover and then lift the fuse holder with a flat
screwdriver and pull out the fuse.
The fuse can only be replaced by a qualified
person, after the mains supply is disconnected.

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8. ELECTRICAL SCHEME
Electrical wiring diagram of the module: FU –fuse (1,25 A / 250 VAC), ecoMAX –the main
controller, NGK –Lambda probe type ZFAS-U2, RS485 –transmission (D+, D-), !–connect only with
two wires (do not connect with four wires, because of risk to damage the controller).
Changes register:
The manufacturer reserves the
right to make design and software
changes without prior notice.
NGK