Condair MD Series User manual

Humidication and Evaporative Cooling
2598980-A CH-EN 2011
OPERATING INSTRUCTIONS
Condair HumiLife – the efficient ERV solution
Condair MD
MD-EL-H
MD-FB-H
MD-WW-H
MD-HW-H

Thank you for choosing Condair
Please enter the system data listed below during commissioning.
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Installation site:
Model:
Serial number:
Water treatment cartridge size:
Water preparation bypass stage setting:
Supply water hardness at the installation site:
Supply water pH value at the installation site:
Proprietary rights
This document and the information disclosed herein are proprietary data of Condair Group AG. These operating
instructions (including extracts hereof) may not be reproduced or passed on, nor may the contents thereof be used
or passed on to any third party without the written permission of the manufacturer. Any infringements are punish-
able and entail a liability for damages.
Liability
Condair Group AG is not liable for any damages incurred as a result of poorly executed installation, improper
operation or the use of components or equipment not approved by Condair Group AG.
Copyright notice
© Condair Group AG, all rights reserved
Subject to technical alterations

3Contents
Contents
1 Introduction 5
1.1 First things rst! 5
1.2 Notes on these operating instructions 5
2 For your safety 7
3 Product overview 9
3.1 Model overview 9
3.2 Product labelling 9
3.3 Humidier unit design 10
3.4 Hydraulic unit design 11
3.4.1 Hydraulic unit Condair MD version MD-EL-H 11
3.4.2 Hydraulic unit Condair MD version MD-HW-H 12
3.4.3 Hydraulic unit Condair MD version MD-FB-H 13
3.4.4 Hydraulic unit Condair MD version MD-WW-H 14
3.5 System overviews 15
3.6 System overview Condair MD version MD-EL-H 15
3.7 System overview Condair MD version MD-HW-H 16
3.8 System overview Condair MD version MD-FB-H 17
3.9 System overview Condair MD version MD-WW-H 18
3.10 Functional description 19
4 Operation 21
4.1 Initial commissioning 21
4.2 Display and operating elements 22
4.2.1 Display and operating elements on the hydraulic unit 22
4.2.2 Display and operating elements on the maximum humidistat 23
4.3 Commissioning after having stopped operation 24
4.4 Notes on operation 25
4.4.1 Operator inspections during operation 25
4.4.2 Operating modes 26
4.4.2.1 "Humidify" operating mode 26
4.4.2.2 "Standby" operating mode 27
4.5 Decommissioning 28
4.6 Shutting down the ERV 28
5 Working with the control software 29
5.1 Home screen 29
5.1.1 Display and operating elements on the Home screen 30
5.1.2 Switching over the operating mode 30
5.1.3 Operating mode displays 31
5.2 Operating elements in the menu displays 31

4Contents
5.3 Viewing device and system information 32
5.3.1 Opening the Information menu 32
5.3.2 Device information 33
5.3.3 Device status 34
5.3.4 Water Supply 35
5.4 User settings 35
5.4.1 Opening the user menu 35
5.4.2 Specifying the humidier level or humidity setpoint 36
5.4.3 Specifying the control type and operating mode 37
5.4.4 "Error" sub-menu 38
5.4.5 "Service" sub-menu 38
5.4.6 "Installation" sub-menu 39
5.5 Display settings 39
5.5.1 Opening the display settings menu 39
5.5.2 Specifying display settings 40
6 Service 41
6.1 Important service information 41
6.2 Service intervals 42
6.3 Service list 43
6.4 Service work 44
6.4.1 Descaling the internal Condair MD water system 44
6.4.2 Disinfecting the internal Condair MD water system 49
6.4.3 Periodic visual check of the humidier insert 53
7 Troubleshooting 57
7.1 Safety information regarding troubleshooting 57
7.2 Important information for troubleshooting 57
7.3 Malfunction messages 58
7.4 Malfunction list 59
7.5 Resetting the error display 63
8 Decommissioning/Disposal 64
8.1 Decommissioning 64
8.2 Disposal/recycling 64
9 Productspecications 65
9.1 Technical data of the hydraulic unit 65
9.2 Technical data of humidier unit 66
9.3 CE Declaration of Conformity 67
10 Appendix 68
10.1 Spare parts and consumables 68

5Introduction
1 Introduction
1.1 Firstthingsrst!
Thank you for choosing the Condair MD. The Condair MD uses a semi-permeable diaphragm through
which pure – and thus invisible – steam diffuses and is output to the duct air.
The Condair MD has been built using state-of-the-art technology and in accordance with the latest safety
regulations. However, improper use of the Condair MD may put users and/or third parties at risk and/or
may also cause damage to material assets.
Please observe and comply with all information and safety instructions in this documentation and in the
instructions to the components built into the humidier system to ensure safe, proper and cost-efcient
operation of the Condair MD.
Should you have any questions after reading these instructions, please contact your local Condair rep-
resentative. They will be pleased to help you.
1.2 Notes on these operating instructions
Delimitations
These operating instructions deal with the different variants of Condair MD. Options and accesso-
ries are only described insofar as is necessary for proper operation. Please see the relevant instructions
for additional information on the options and accessories.
The information in these operating instructions are restricted to commissioning, operation, service
and troubleshooting of the Condair MD and are aimed at correspondingly trained specialist staff
that has been adequately trained for the corresponding activity.
These operating instructions are supplemented by different, separate documentation (installation and
commissioning instructions, spare parts list, etc.) that is also part of the scope of delivery. Where neces-
sary, these operating instructions may refer to these publications.

6Introduction
Symbols used in this manual
CAUTION!
The signal word "CAUTION" together with the hazard symbol in a circle indicates information provided
in these operating instructions which, if ignored, could lead to damage and/or the failure of the de-
vice or other material assets.
WARNING!
The signal word "WARNING" together with the general hazard symbol indicates safety and hazard
information in these operating instructions, which, if ignored, could result in personal injury.
DANGER!
The signal word "DANGER" together with the general hazard symbol indicates safety and hazard
information in these operating instructions, which, if ignored, could result in serious personal injury,
including death.
Storage
Please keep these operating instructions in a safe place where they can be accessed at all times. If the
Condair MD changes hands, these operating instructions must be handed over to the new operator.
Should you lose the operating instructions, please contact your Condair representative.
Language versions
This operating manual is available in various languages. For more information, please contact your
Condair representative.

7For your safety
2 For your safety
General information
Any persons tasked with working on the Condair MD must have read and understood the operating
instructions prior to starting work.
Knowledge of the contents of these operating instructions is a basic prerequisite for protecting personnel
from danger, avoiding improper operation and thereby operating the Condair MD safely and properly.
All pictograms, signs and labelling applied to the Condair MD must be observed and kept in a clearly
legible condition.
Personnelqualications
Any work described in these operating instructions must be performed by the operator of the Condair
MD in accordance with the information in these instructions.
Furthermore, for safety and warranty reasons, interventions may only be undertaken by specialist per-
sonnel authorised by Condair.
It is assumed that all persons entrusted to work on the Condair MD are familiar with and abide by the
regulations on occupational health and safety and accident prevention.
The Condair MD can be operated by children from the age of eight and persons with restricted physical,
sensory or mental capabilities or a lack of experience and expertise if they are supervised by appropri-
ately trained persons or if they have been instructed in the safe operation of the device and understand
the resulting hazards. Children must not play with the device. Children must not carry out unsupervised
cleaning and service activities on the device.
Intended use
The Condair MD is exclusivelyintendedforductairhumidicationtogetherwithanenergyrecov-
eryventilation(ERV)withinthespeciedoperatingconditions. Any other use without the written
permission of Condair is deemed to be improper use and can render the Condair MD hazardous. Any
unintended use shall render guarantee claims void.
Intended use also includes the following: observing all information contained in this documentation
(particularly all safety and hazard warnings).

8For your safety
Hazards that may arise from the Condair MD
DANGER!
Risk of electrocution
The hydraulic unit of the Condair MD operates using mains voltage. If the hydraulic unit is open,
users may come into contact with live parts. Touching live parts may cause severe injury or death.
For this reason: before commencing work on the components of the Condair MD, the Condair MD
must be properly shut down in accordance with (switch off device, disconnect from mains power supply
and shut off water supply) and protected against unintentional start-up.chapter 4.5
Warning!
System contamination hazard
If the Condair MD is switched off, there is a risk of the fresh water supply line and the internal
watersystembecomingcontaminated,asthewatersystemisthennolongerbeingushed
regularly.
For this reason: After commissioning of the Condair MD must no longer be switched off and must either
be operated in "Humidify" or "Standby" mode (see chapter 4.4.2 for operating modes). This will ensure
that the water system is purged correctly at regular intervals and any contamination is counteracted.
DANGER!
Health hazards as a result of improper hygiene
Improperoperationandpoorlyserviceddiaphragmhumidiersmayposeahealthhazard.In
the event of improper operation or inadequate service harmful pathogens may reproduce in
the Condair MD water system.
For this reason: the Condair MD must always be operated and serviced as described in these
operating instructions.
Avoidance of hazardous operating conditions
If it can be assumed that safe operation is no longer possible, the Condair MD must be immediately
shut down as per chapter 4.5 and secure against unintentional activation. This may occur under the
following circumstances:
– If Condair MD components have been damaged
– If the electrical installation has been damaged
– If the Condair MD is no longer operating correctly
– If connections or pipes are leaking
All persons entrusted to work on the Condair MD are obliged to immediately report any modications to
the device which impair the safety to the appropriate, responsible entity at the operator.
Unauthorisedmodicationstothedevice
No additions or modications must be made to the Condair Md without without the written permission
of Condair.
When replacing any defective components of the device, exclusively use genuine accessories and
spare parts provided by your Condair representative.
Exclusively use consumables provided by Condair that have been listed in the spare parts list to service
the Condair MD.

9Product overview
3 Product overview
3.1 Model overview
The Condair MD is available in four different variants with a humidication output of 2 kg/h for installation
in horizontal ventilation ducts (H).
– EL: heating up the humidication water with integrated, electrical heating.
– HW: heating up the humidication water using the integrated heat exchanger connected to a hot
water circuit of a heating system.
– FB: heating up the humidication water using the integrated heat exchanger connected to a oor/
wall-based heating or a convection circuit.
– WW: heating up the humidication water using the integrated heat exchanger connected to the hot
water system (heated drinking water or heated waste water).
Variant Humidicationoutput1) Heating type
MD-EL-H
2 kg/h 1)
Electrical heating element integrated into the water
tank of the hydraulic unit
MD-HW-H Heating water circuit (35°C to 60°C) without recir-
culation pump
MD-FB-H Floor/wall-based heating circuit or convection circuit
(29°C to 60°C) with recirculation pump
MD-WW-H Hot water circuit (45°C to 60°C) without recircula-
tion pump
1) The stated humidication output is the maximum value, measured at an air throughput rate of
180 m3/h. The effective humidication output depends on the heating source output, the condition
of the supply air and the adjusted humidity setpoint. The output has been veried by Fraunhofer
Institute for Solar Energy Systems (ISE), Freiburg, Germany.
The functionality of all basic models can be enhanced using various options. Different accessories and
consumables are also available.
3.2 Product labelling
The type plate features the product labelling:
Condair Group AG, Gwattstrasse 17, 8808 Pfäfkon SZ, Switzerland
Type: Condair MD Serial no.: XXXXXXX 11.19
Voltage: 230V/1~/50-60Hz El. output: 800.0 VA 3.4 A
Humidier output: 2 kg/h
Water pressure: 1.5 to 5 bar, <30°C Code: MD-EL-H
Engineered in Switzerland, made in Germany
Type designation Serial number (7 digits)
Production date,
month/year
Connection voltage
Maximum humidication output
Permissible water connection pressure
Electrical output
Field with test marks
Variant code

10 Product overview
3.3 Humidierunitdesign
1Leakage sensor cable connection socket
2Humidier unit return connection
3Humidier unit supply connection
4 Humidier housing
5Leakage sensor
6 Air lter (optional accessory)
7 Base panel
8Humidier insert
9Coupling pipes
10 Humidier unit front cover
Fig. 1: Humidier unit design
2
1
3
5
6
7
4
10
8
9

11Product overview
3.4 Hydraulic unit design
3.4.1 Hydraulic unit Condair MD version MD-EL-H
Fig. 2: Hydraulic unit Condair MD version MD-EL-H
1
10
9
8
3
7
4
6
5
14
15
12
11
2
16
19
18
17
20
21
13
1Fresh water supply connection
2Drain connection
3Inlet valve
4 Humidier circuit circulation pump
5Water tank
6 Overtemperature switch
7 Flow rate and temperature sensor
8Humidier unit supply connection
9Humidier unit return connection
10 Service uid connection
11 Water container
12 Level sensor
13 Heating elements
14 Conductivity sensor
15 Drain valve
16 Control PCB
17 Touch screen control
18 LED operating status display
19 Device switch
20 Remote operation and fault indication PCB (optional)
21 24 V mains adapter

12 Product overview
3.4.2 Hydraulic unit Condair MD version MD-HW-H
Fig. 3: Hydraulic unit Condair MD version MD-HW-H
2324
9
8
7
3
6
4
5
13
14
22
21
11
12
10
15
18
17
16
20
19
12
1Fresh water supply connection
2Drain connection
3Inlet valve
4 Humidier circuit circulation pump
5Water tank
6 Flow rate and temperature sensor
7 Humidier unit supply connection
8Humidier unit return connection
9Service uid connection
10 Water container
11 Level sensor
12 Heat exchanger
13 Conductivity sensor
14 Drain valve
15 Control PCB
16 Touch screen control
17 LED operating status display
18 Device switch
19 Remote operation and fault indication PCB (optional)
20 24 V mains adapter
21 Heating water circuit circulation pump
22 Heating water circuit temperature control valve
23 Heating water return connection
24 Heating water supply connection

13Product overview
1Fresh water supply connection
2Drain connection
3Inlet valve
4 Humidier circuit circulation pump
5Water tank
6 Overtemperature switch (optional)
7 Flow rate and temperature sensor
8Humidier unit supply connection
9Humidier unit return connection
10 Service uid connection
11 Water container
12 Level sensor
13 Heat exchanger
Fig. 4: Hydraulic unit Condair MD version MD-FB-H
3.4.3 Hydraulic unit Condair MD version MD-FB-H
14 Heating element (optional)
15 Conductivity sensor
16 Drain valve
17 Control PCB
18 Touch screen control
19 LED operating status display
20 Device switch
21 Remote operation and fault indication PCB (optional)
22 24 V mains adapter
23 Heating water circuit temperature control valve
24 Heating water return connection
25 Heating water supply connection
2425
10
9
8
3
7
6
4
5
15
16 23
13
11
17
12
14
12
20
19
18
22
21

14 Product overview
1Fresh water supply connection
2Drain connection
3Inlet valve
4 Humidier circuit circulation pump
5Water tank
6 Flow rate and temperature sensor
7 Humidier unit supply connection
8Humidier unit return connection
9Service uid connection
10 Water container
11 Level sensor
12 Heat exchanger
13 Conductivity sensor
Fig. 5: Hydraulic unit Condair MD version MD-WW-H
3.4.4 Hydraulic unit Condair MD version MD-WW-H
14 Drain valve
15 Control PCB
16 Temperature control valve transformer
17 Touch screen control
18 LED operating status display
19 Device switch
20 Remote operation and fault indication PCB (optional)
21 24 V mains adapter
22 Hot water circuit circulation pump
23 Hot water circuit temperature control valve
24 Hot water return connection
25 Hot water supply connection
2425
9
8
7
3
6
4
5
13
14 23
22
11
12
10
16
15
19
18
17
21
20
12

15Product overview
17
5
9
12
11
10
1
13
16
3 4
6
8
7
14
15
2
Water treatment (optional)
Reverse osmosis
system Condair RO-HS
Decarboniser
50 % skaliert!
50 % skaliert!
3.5 System overviews
3.6 System overview Condair MD version MD-EL-H
1Fresh water supply shut-off valve
2Water treatment (optional)
3Fresh water supply connection
4 Drain connection
5Drain funnel with siphon
6 Service uid connection
7 Humidier unit supply
8Humidier unit return
9Hydraulic unit
10 Mains connection cable
11 Mains socket (230V/1~/50Hz)
12 Humidier unit
13 Maximum humidistat
14 Air ow monitor
15 Humidity and temperature sensor
16 Energy recovery ventilation (ERV)
Exhaust air
Supply air
Fig. 6: System overview Condair MD version MD-EL-H with exhaust air humidity control

16 Product overview
1
2
19
17
9
12
11
10
13
16
5
3 4
6
8
7
14
15
17 18
3.7 System overview Condair MD version MD-HW-H
1Fresh water supply shut-off valve
2Water treatment (optional)
3Fresh water supply connection
4 Drain connection
5Drain funnel with siphon
6 Service uid connection
7 Humidier unit supply
8Humidier unit return
9Hydraulic unit
10 Mains connection cable
11 Mains socket (230V/1~/50Hz)
12 Humidier unit
13 Maximum humidistat
14 Air ow monitor
15 Humidity and temperature sensor
16 Energy recovery ventilation (ERV)
17 Heating water supply connection
18 Heating water return connection
19 On-site heating water installation
Fig. 7: System overview Condair MD version MD-HW-H with exhaust air humidity control
Supply and return of
existing heating water
storage
Exhaust air
Supply air
Water treatment (optional)
Reverse osmosis
system Condair RO-HS
Decarboniser
50 % skaliert!
50 % skaliert!

17Product overview
1
2
17
9
12
11
10
13
16
5
3 4
6
8
7
14
15
17 18
19
3.8 System overview Condair MD version MD-FB-H
1Fresh water supply shut-off valve
2Water treatment (optional)
3Fresh water supply connection
4 Drain connection
5Drain funnel with siphon
6 Service uid connection
7 Humidier unit supply
8Humidier unit return
9Hydraulic unit
10 Mains connection cable
11 Mains socket (230V/1~/50Hz)
12 Humidier unit
13 Maximum humidistat
14 Air ow monitor
15 Humidity and temperature sensor
16 Energy recovery ventilation (ERV)
17 Heating water supply connection
18 Heating water return connection
19 On-site heating water installation
Fig. 8: System overview Condair MD version MD-FB-H with exhaust air humidity control
Supply and return of
existing oor/wall-
based heating or
convection circuit
Exhaust air
Supply air
Water treatment (optional)
Reverse osmosis
system Condair RO-HS
Decarboniser
50 % skaliert!
50 % skaliert!

18 Product overview
1
2
19
17
9
12
11
10
13
16
5
3 4
6
8
7
14
15
17 18
Water treatment (optional)
Reverse osmosis
system Condair RO-HS
Decarboniser
50 % skaliert!
50 % skaliert!
3.9 System overview Condair MD version MD-WW-H
1Fresh water supply shut-off valve
2Water treatment (optional)
3Fresh water supply connection
4 Drain connection
5Drain funnel with siphon
6 Service uid connection
7 Humidier unit supply
8Humidier unit return
9Hydraulic unit
10 Mains connection cable
11 Mains socket (230V/1~/50Hz)
12 Humidier unit
13 Maximum humidistat
14 Air ow monitor
15 Humidity and temperature sensor
16 Energy recovery ventilation (ERV)
17 Hot water supply connection
18 Hot water return connection
19 On-site hot water installation
Fig. 9: System overview Condair MD version MD-WW-H with exhaust air humidity control
Supply and return
of existing hot water
storage
Exhaust air
Supply air

19Product overview
3.10 Functional description
The Condair MD is based on the principle of the steam pressure difference between the dry air in the
duct and the water in the humidier. In this process pure steam diffuses through a semi-permeable
diaphragm of the humidier unit and humidies the duct air.
Water supply
The building fresh water supply is fed to the hydraulic unit via a shut-off valve and, depending on the
water hardness, via a water treatment system (reverse osmosis system Condair RO-HS or decarboniser).
The water reaches the water tank via the level-controlled inlet valve and the open water container.
Note: the open water container is designed so that the supply water is separate to the device water and
device water is unable to return to the supply line.
The supply water must meet valid drinking water specications as per EN 1717 and SVGW/DVGW.
The permissible supply water temperature is between 8°C and 30°C and the supply pressure between
1.5 and 5.0 bar.
Water heating
Depending on the humidity demands the water towards the humidier unit must be heated to between
20°C and 40°C for an efcient operation of the Condair MD. Depending on the applied humidier model
the water is heated differently:
– MD-EL-H variant: The humidier water is heated in the hydraulic unit using electrically operated
heating elements in the water tank.
Note: In the MD-EL-H variant the heating element temperature is permanently monitored by the
control electronics. If the temperature of a heating element exceeds a certain temperature limit
value, the power to this heating element is interrupted and a corresponding error message is output.
– MD-HW-H variant: The humidier water is heated by a heat exchanger which has been integrated
into the hydraulic unit that is supplied with heating water from a heating system without recirculation
pump.
– MD-FB-H variant: The humidier water is heated by a heat exchanger that has been integrated into
the hydraulic unit, fed by the water of a oor/wall-based heating with recirculation pump or a convec-
tion circuit with recirculation pump.
– MD-WW-H variant: The humidier water is heated by a heat exchanger which has been integrated
into the hydraulic unit that is supplied by a hot water system (heated drinking water) without recir-
culation pump.
Level control
The level within the water tank is permanently monitored by a level sensor. If the water level drops below
a specied level (as a result of the humidication process), the level sensor sends a signal to the control
system. The control system opens an inlet valve and the water tank is topped up. Upon reaching the
specied operating level the level sensor once again sends a signal to the control system and the inlet
valve is closed.
Water temperature throughput quantity control
The water temperature and water throughput rate through the humidier required for a certain humidity
demand is detected by a control circuit within the control system on the basis of the humidity demand
and the combined temperature and throughput sensor installed in the humidier unit water circuit before
it is set to the corresponding values.

20 Product overview
Humidity control
The humidity demand is determined by the setpoint humidity adjusted by the user and a combined
humidity and temperature sensor installed in the exhaust air duct. The water temperature and water
throughput rate is controlled accordingly on the basis of the determined humidity demand.
Draining
As the humidier unit of the Condair MD exclusively outputs water molecules to the duct air, the minerali-
sation within the water contained in the internal water circuit increases (particularly in the event of opera-
tion with untreated drinking water). A corresponding water quantity must be regularly drained from the
water tank and replaced by fresh water to make sure this concentration does not exceed a certain value.
During the draining process, the drain valve is opened for a certain time and the inlet valve opens with
a delay. If the lowest operating level within the water tank is reached during the draining process, the
inlet valve remains open until the water level in the water tank has once again reached the normal op-
erating level.
Periodic rinsing
In humidication mode and in standby mode the supply line and the internal water system of the Condair
MD hydraulic system is ushed with fresh tap water every 47 hours according to a xed schedule as per
VDI 6022. For this reason, the water supply to the hydraulic unit must also always be open outside the
humidication season and the device must not be disconnected from the mains power and/or be switched
off (exception: device is being serviced). Outside the humidication season the Condair MD can continue
to be operated in standby mode (see chapter 5.1.2 for information on how to activate standby mode).
Note: if the Condair MD has to be switched off for a prolonged period of time, please note the informa-
tion in chapter 4.5.