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2577872 EN 1412
Humidication and Evaporative Cooling
INSTALLATION MANUAL
Adiabatic air humidification/air cooling system
Condair ME Control
READ AND SAVE THESE INSTRUCTIONS
Thank you for choosing Condair
Installation date (MM/DD/YYYY):
Commissioning date (MM/DD/YYYY):
Location ref.:
Model:
Serial number:
Manufacturer
Condair Plc
Artex Avenue, Rustington,
Littlehampton, West Sussex.
BN16 3LN (UK)
TEL: +44(0)1903 850 200
FAX: +44(0)1903 850 345
www.condair.co.uk
Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Plc. Neither this document, nor
the information contained herein shall be reproduced, used, or disclosed to others without the written authorization
of Condair Plc, except to the extent required for installation or maintenance of recipient's equipment.
Liability Notice
Condair Plc does not accept any liability due to incorrect installation or operation of the equipment or due to the
use of parts/components/equipment that are not authorized by Condair Plc.
Copyright Notice
Copyright 2014, Condair Plc All rights reserved.
Technical modications reserved
3Contents
Contents
1 Introduction 4
1.1 General 4
1.2 Notes on the installation manual 4
2 For your safety 6
3 Important notes on installation 8
3.1 Delivery 8
3.2 Storing/Transportation/Packaging 8
3.3 Product designation / Which model do you have 9
3.4 UL approved installation 9
4 Installation 10
4.1 Installation overviews 10
4.1.1 Typical installation Condair ME Control (internal installation) 10
4.1.2 Typical installation Condair ME Control (external installation) 11
4.2 Mounting the evaporative module 12
4.2.1 Notes on positioning the evaporative module 12
4.2.2 Installation procedure evaporative module 14
4.3 Mounting the hydraulic module 24
4.3.1 Mounting the hydraulic module (internal installation) 24
4.3.2 Mounting the hydraulic module (external installation) 25
4.4 Water installation 27
4.4.1 Notes on water installation 27
4.4.2 Water installation (internal installation) 29
4.4.3 Water installation (external installation) 30
4.5 Mounting the control unit 31
4.5.1 Notes on positioning the control unit 31
4.5.2 Mounting the control unit 32
4.6 Electrical installation 33
4.6.1 Notes on electrical installation 33
4.6.2 Wiring diagram Condair ME Control 35
4.6.3 Installation work 37
5 Appendix 42
5.1 Inlet water quality requirements 42
4 Introduction
1 Introduction
1.1 General
We thank you for having purchased the Condair ME Control Evaporative Humidier and Cooler
(Condair ME Control for short).
The Condair ME Control incorporates the latest technical ad van ces and meets all recognized safety
standards. Nevertheless, improper use of the Condair ME Control may result in danger to the user or
third parties and/or impairment of material assets.
To ensure a safe, proper, and economical operation of the Condair ME Control, please observe and
comply with all information and safety instructions contained in the present documentation as well as in
the separate documentations of the components installed in the humidication system.
If you have questions after reading this documentation, please contact your Condair representative.
They will be glad to assist you.
1.2 Notes on the installation manual
Limitation
The subject of this installation manual is the Condair ME Control Evaporative Humidier and
Cooler
. The various options and accessories are only described insofar as is necessary for proper
operation of the equipment. Further information on options and accessories can be obtained in the
respective instructions.
This installation manual is restricted to the installation of the Condair ME Control and is meant for well
trained personnel being sufciently qualied for their respective work.
Please note, some illustrations in this manual may show options and accessories which may not be
supplied as standard or available in your country. Please check availability and specication details with
your Condair representative.
The installation manual is supplemented by various separate items of documentation (such as the opera-
tion manual), which are included in the delivery as well. Where necessary, appropriate cross-references
are made to these publications in the installation manual.
5Introduction
Symbols used in this manual
CAUTION!
The catchword “CAUTION” used in conjunction with the caution symbol in the circle designates notes
in this installation manual that, if neglected, may cause damage and/or malfunction of the unit or
other material assets.
WARNING!
The catchword “WARNING” used in conjunction with the general caution symbol designates safety
and danger notes in this installation manual that, if neglected, may cause injury to persons.
DANGER!
The catchword “DANGER” used in conjunction with the general caution symbol designates safety and
danger notes in this installation manual that, if neglected, may lead to severe injury or even death
of persons.
Safekeeping
Please safeguard this installation manual in a safe place, where it can be immediately accessed. If the
equipment changes hands, the documentation must be passed on to the new operator.
If the documentation gets mislaid, please contact your Condair representative.
Language versions
This installation manual is available in various languages. Please contact your Condair representative
for information.
6 For your safety
2 For your safety
General
Every person working with the Condair ME Control must have read and understood the installation
manual and the operation manual of the Condair ME Control before carrying out any work.
Knowing and understanding the contents of the installation manual and the operation manual is a basic
requirement for protecting the personnel against any kind of danger, to prevent faulty operation, and to
operate the unit safely and correctly.
All ideograms, signs and markings applied to the unit must be observed and kept in readable state.
Qualication of personnel
All work described in this installation manual may only be carried out by specialists who are well
trained and adequately qualied and are authorized by the customer.
For safety and warranty reasons any action beyond the scope of this manual must be carried out only
by qualied personnel authorised by the manufacturer.
It is assumed that all persons working with the Condair ME Control are familiar and comply with the
appropriate local regulations on work safety and the prevention of accidents.
Intended use
The Condair ME Control is intended exclusively for air humidication and air cooling in AHU's or air
ducts within the specied operating conditions (see operation manual Condair ME Control). Any other
type of application, without the written consent of the manufacturer, is considered as not conforming with
the intended purpose and may lead to the Condair ME Control becoming dangerous.
Operation of the equipment in the intended manner requires that all the information contained in this
installation manual are observed (in particular the safety instructions).
Danger that may arise from the Condair ME Control
DANGER!
Risk of electric shock!
The Condair ME control unit (and the optional submerged UV system) contain live mains
voltage. Live parts may be exposed when the control unit (or the terminal box of the optional
submerged UV system) is open. Touching live parts may cause severe injury or danger to life.
Prevention: The control unit must be connected to the mains only after all mounting and installation
work has been completed, all installations have been checked for correct workmanship and the covers
has been relocated properly.
WARNING!
Some type of evaporative material is manufactured from glass bre. Though this material is not classi-
ed as hazardous, it is recommended that Personal Protection Equipment such as gloves, protective
clothing and eye protection are used during handling to protect the user from bres or dust. If dust is
generated during handling it is recommended that respiratory protection is worn.
7For your safety
Correct lifting and handling
Lifting or handling of components must only be carried out by trained and qualied personnel. Ensure
that the lifting operation has been properly planned and risk assessed, and that all equipment has been
checked by a skilled and competent Health & Safety representative.
It is the customer's responsibility to ensure that operators are trained in handling heavy goods and to
enforce the relevant lifting regulations.
Preventing unsafe operation
All persons working with the Condair ME Control are obliged to report any alterations to the unit that may
affect safety to the owner without delay and to secure such systems against accidental power-up.
Prohibited modications to the unit
No modications must be undertaken on the Condair ME Control without the express written consent
of the manufacturer.
For the replacement of defective components use exclusively original accessories and spare parts
available from your Condair representative.
8 Important notes on installation
3 Important notes on installation
3.1 Delivery
After receiving:
Inspect shipping boxes for damage.
Any damages to the shipping boxes must be reported to the shipping company.
Check packing slip to ensure all parts has been delivered.
All material shortages are to be reported to your Condair representative within 48 hours after receipt
of the goods. Condair assumes no responsibility for any material shortages beyond this period.
Unpack the parts/components and check for any damage.
If parts/components are damaged, notify the shipping company immediately.
Check whether the components are suitable for installation on your site according to the product
specication (refer to model key in the operation manual).
3.2 Storing/Transportation/Packaging
Storing
Until installation store the system components in its original packaging in a protected area meeting the
following requirements:
Room temperature: 1 ... 40 °C
Room humidity: 10 ... 75 %rh
Transportation
For optimum protection always transport the unit in the original packaging and use an appropriate lifting/
transporting device.
The packaged Condair ME unit may be carried by fork lift from the underside, but caution should be exer-
cised to ensure that the load is balanced before lifting. Refer to the rating plate for weights and measures.
WARNING!
It is the customer's responsibility to ensure that operators are trained in handling heavy goods and to
enforce the relevant lifting regulations.
Packaging
Keep the original packaging of the components for later use.
In case you wish to dispose of the packaging, observe the local regulations on waste disposal. Please
recycle packaging where possible.
9Important notes on installation
3.3 Product designation / Which model do you have
The product designation and the most important unit data are found on the rating plate xed to the
evaporative module and the control unit.
Information regarding the rating plate and the product key can be found in the operation manual of the
Condair ME Control.
3.4 UL approved installation
In order to maintain a UL approved installation, the following installation requirements must be met,
otherwise the Condair ME system will not be approved under UL998.
1. The Condair ME Control hydraulic unit must be installed external to the air stream in accordance with
the typical installation drawing in chapter 4.1.2 – Typical installation Condair ME Control (external
installation).
2. All interconnecting piping and connections between the evaporative module and the hydraulic unit,
in direct contact with the air stream must be either copper or stainless steel.
Note: water quality should be considered when selecting an appropriate material (i.e. copper is not
suitable for RO water).
3. The Condair ME Control unit contains a large reservoir of water when in operation. Install the ME
unit where is no risk of water damage, otherwise make provisions to contain any leakage.
10 Installation
4 Installation
4.1 Installation overviews
4.1.1 Typical installation Condair ME Control (internal installation)
1 - Mounting the evaporative module --> see chapter 4.2 – Mounting the evaporative module
2 - Mounting the hydraulic module --> see chapter 4.3 – Mounting the hydraulic module
3 - Water installation --> see chapter 4.4 – Water installation
4 - Mounting the control unit --> see chapter 4.5 – Mounting the control unit
5 - Electrical installation --> see chapter 4.6 – Electrical installation
Fig. 1: Typical installation Condair ME Control (internal installation)
3
4
5
1
2
Evaporative module
Hydraulic module
Water supply line
Water drain line
Control unit
Electrical
isolator
Air ow direction
AHU drain
Drain vent
11Installation
4.1.2 Typical installation Condair ME Control (external installation)
1 - Mounting the evaporative module --> see chapter 4.2 – Mounting the evaporative module
2 - Mounting the hydraulic module --> see chapter 4.3 – Mounting the hydraulic module
3 - Water installation --> see chapter 4.4 – Water installation
4 - Mounting the control unit --> see chapter 4.5 – Mounting the control unit
5 - Electrical installation --> see chapter 4.6 – Electrical installation
Fig. 2: Typical installation Condair ME Control (external installation)
1
2
4
5
3
Evaporative module
Hydraulic module
Water supply line
Water drain line
Control unit
Electrical
isolator
Air ow direction
AHU drain
Pressure equalisation
Drain vent
12 Installation
4.2 Mounting the evaporative module
4.2.1 Notes on positioning the evaporative module
The design and dimensioning of the AHU/air duct as well as the location of the evaporative module
inside the duct are determined, recorded and set compulsory when planning the entire system. Prior to
installation, however, make sure the following criteria have been taken into consideration:
The AHU/air duct oor must be designed with a loading capacity capable of supporting the evapora-
tive module’s weight. The weight of the evaporative module can be found on the rating plate.
In the area where the evaporative module is installed the oor of the AHU/air duct must offer a plane
support (lengthwise and crosswise).
The evaporative module must be installed in a waterproof section of the AHU/air duct.
Downstream, directly after the evaporative module a drain pan with provision for running water
to waste must be installed. The drain must be connected via a drain trap to the waste water line of
the building. The drain trap must be sufciently high and must be lled with water prior to commis-
sioning, so that the drain trap is not emptied by the air pressure in the duct. The drain pan and the
drain trap must be accessible for cleaning and disinfection as part of the periodic maintenance of
the system.
For installation and maintenance sufciently large access doors before and after the evaporative
module must be available in the AHU/air duct.
The supply air must be ltered. We recommend to install an air lter with quality standard F7 (EU7)
or better before the evaporative module. If no air lter or an air lter with lower quality is installed an
increased maintenance will result.
An even air ow over the full cross section of the evaporative module must be guaranteed. If
necessary, rectiers or perforated plates must be installed.
The evaporative module must be positioned on upstands (supplied) to allow to install the drain pipe
with a downslope through the side wall of the AHU/air duct.
In case of low ambient temperature the AHU/air duct must be insulated to prevent the moist air from
condensing inside the duct.
If the AHU is equipped with a heater, make sure it is at least 600 mm (24") away from the evapora-
tive module.
If the face velocity exceeds 3.5 m/s (689 fpm), the optional droplet separator cassettes must be
installed.
Appropriate clearance must be available for the hydraulic module (and associated plumbing) when
installing externally.
13Installation
For inspection, commissioning and maintenance we recommend a minimum free space of 600 mm
(24") before and after the evaporative module.
Air ow direction
Recommended service access
600 mm / 24"
(min. 200 mm / 7.9")
Recommended service access
600 mm / 24"
a
395 mm / 15.6"
Dimension “a”:
ME Control (internal mounting): 272 mm (10.7")
ME Control (external mounting): 111 mm (4.4")
Fig. 3: Positioning of the evaporative module
CAUTION!
The ME unit contains a large reservoir of water when in operation. Install the ME unit where is no risk
of water damage, otherwise make provisions to contain any leakage.
14 Installation
4.2.2 Installation procedure evaporative module
1. Mounting the tank upstands to the tank:
Mounting the tank upstands supplied by Condair: x tank upstands to the tank as shown in
the gure below using the nuts (M8, AF: 13 mm) and washers supplied. Do not tighten the nuts.
Fig. 4: Mounting the tank upstands to the tank
15Installation
2. Mounting the tank:
Insert the tank into the AHU/air duct.
WARNING!
Use an appropriate lifting device or handle the tank with the help of another person to posi-
tion it inside the duct. It is the customer's responsibility to ensure that operators are trained in
handling heavy goods and to enforce the relevant lifting regulations.
Align the tank to the centre of the duct and perpendicular to the duct walls. When aligned fix tank
upstands to the duct floor.
CAUTION!
The installer must take appropriate measures to ensure that the duct oor remains water proof
once the tank upstands has been xed to the duct oor.
Then, adjust the tank with the leveling nuts lengthwise and crosswise exactly horizontal using a
level to. When adjusted, tighten the leveling nuts.
Fig. 5: Mounting the tank
=
=
16 Installation
3. Fix frame to the tank:
Fix the vertical supports to the tank using the nyloc nuts (M6, AF: 10 mm) and M6 washers. Then,
align the vertical supports exactly vertical using a level and tighten the nuts.
Fix the cross member to the vertical supports using the nyloc nuts (M6, AF: 10 mm) and M6
washers. Then, tighten the nuts.
Fig. 6: Fix frame to tank
17Installation
4. Fix cross member of frame to AHU/duct ceiling:
Fix the cross member to the AHU/duct ceiling using appropriate xings. Before tightening the
screws align the vertical supports exactly vertical using a level.
Fig. 7: Fix cross member to AHU/duct ceiling
18 Installation
5. Mount the blanking plates on the air inlet side (blanking plates available as option):
Starting on each duct side on the bottom x the side blanking plates to the duct wall using ap-
propriate xings. Before fixing make sure the side blanking plates are aligned exactly vertical
and the free end of the blanking plates touches the middle of the corresponding vertical support.
Starting on one side x the upper blanking plates to the duct ceiling using appropriate xings.
Before fixing make sure the upper blanking plates are aligned exactly perpendicular to the duct
walls and the free ends of the blanking plates touch the cross member of the frame.
Starting on one side x the lower blanking plates to the duct oor using welding studs, washers
and nuts. Before fixing make sure the lower blanking plates are aligned exactly perpendicular
to the duct walls and the free ends of the blanking plates touch the tank wall.
CAUTION!
The installer must take appropriate measures to ensure that the duct oor remains water proof
once the lower blanking plates has been xed to the duct oor.
Fig. 8: Mount the Condair supplied blanking plates on the air inlet side
19Installation
6. Mounting the cross bar:
Put the cross bar on the corresponding cross bar bracket with a distance of “A” to the vertical
support (see table below).
Type evaporative cassette
(according to rating plate)
Dimension A
(nominal)
F75 100 mm (4")
F85 150 mm (6")
F95 200 mm (8")
P85 200 mm (8")
P95 300 mm (12")
Fig. 9: Mounting the cross bar
A
Note: On larger systems the supplied
crossbar support(s) must be installed as
shown to prevent bending of the cross bar!
20 Installation
7. Mount optional submerged UV, if applicable:
If your system is equipped with the submerged UV mount UV bulb assembly to the cross bar and
the junction box to the tank in accordance with the separate manual for this option.
8. Mount distribution head assembly to the topmost evaporative cassettes:
This step must only be carried out on evaporative cassettes with glass bre media: mount the
appropriate distribution cassettes onto the corresponding evaporative cassettes. Then, x the
distribution cassettes to the evaporative cassettes using the plastic rivets supplied.
Mount the appropriate distribution heads onto the corresponding evaporative cassettes or dis-
tribution cassettes respectively. Then, x the distribution heads to the evaporative cassettes or
distribution cassettes respectively using the plastic rivets supplied.
Evaporative cassettes with glass bre Evaporative cassettes with polyester
Fig. 10: Mount distribution head assembly to the topmost evaporative cassettes
21Installation
9. Mount evaporative cassettes:
Note: to avoid damage to the evaporative cassettes during transit, we recommend that the evapo-
rative cassettes are tted on site.
Before installing the evaporative cassettes sweep the interior of the tank.
Starting with the tallest evaporative cassettes on the bottom hook the cassettes into the vertical
supports. Make sure the overlying cassettes slip properly into each other.
Fig. 11: Mount evaporative cassettes
1
22 Installation
10. Mount the droplet separator cassettes (this step must only be carried out, if your system is
equipped with a droplet separator):
Note: to avoid damage to the droplet seperator cassettes during transit, we recommend that the
droplet seperator cassettes are tted on site.
Starting with the tallest droplet separator cassettes on the bottom, riveting the banks of the
droplet separator cassettes together using ø 3.2 mm (0.13") blind rivets. Make sure the overlying
cassettes slip properly into the subjacent cassettes.
Fig. 12: Riveting the banks of the droplet separator cassettes together
23Installation
Hook the lower separator brackets into the cross bar.
Then, starting on one side mount one separator bank after the other, align it and secure it with
the upper separator brackets. Make sure separator metalwork slots into evaporator cassettes.
Fig. 13: Mount the droplet separator banks
24 Installation
4.3 Mounting the hydraulic module
The mounting procedure of the hydraulic module depends on whether or not the hydraulic module is
mounted internal or external to the duct.
4.3.1 Mounting the hydraulic module (internal installation)
1. Apply silicone free grease (e.g. gasket grease) onto the surface of the tank connector and onto the
surface of the rubber sealing inside the connector of the hydraulic module.
2. Then, slide the connector bore of the hydraulic module carefully onto the tank connector until it comes
to a stop.
3. With the help of a spirit level and the levelling feet on the bracket, align the hydraulic mod-
ule exactly horizontal in both planes, i.e. front to back and left to right. Then, x the hydraulic
module to the tank using the bracket, nuts (M8, AF: 13 mm) and washers supplied and tighten the
nuts.
Fig. 14: Mounting the hydraulic module (internal installation)
25Installation
4.3.2 Mounting the hydraulic module (external installation)
Clearances to be observed
Fig. 15: Clearances to be observed when mounting the hydraulic module externally
110.5 mm
(4.35")
325 mm
(12.80")
310 mm
(12.20")
110 mm
(4.33")
150 mm
(5.91")
110.5 mm
(4.35")
156.83 mm
(6.17")
Ø80 mm (3.15") HOLE
DETAIL A
TYPICAL HYDRAULIC
MOUNTING POSITION
MINIMUM 25 mm (0.98")
CLEARANCE TYP.
HYDRAULIC MOUNTING
BRACKET
DETAIL A
173.17 mm
(6.82")
AHU WALL
127.5 mm
(5.02")
10 mm
(0.39")
8.5 mm
(0.33")
10 mm
(0.39")
MINIMUM CLEARANCE OF
300 mm (11.81") REQUIRED
WHEN PLANNING THE INSTALLATION OF A ME CONTROL
SYSTEM (WITH EXTERNAL HYDRAULICS) THE CLEARANCE
REQUIRED (OUTSIDE THE AHU) FOR THE FOLLOWING SHOULD
BE CONSIDERED:
DISTRIBUTION HOSES
PRESSURE EQUALISATION
FEED THROUGH PLATES
INLET ASSEMBLY
DRAIN PLUMBING
DRAIN TRAP
26 Installation
Mounting procedure
1. Mark position of the hole for the drain pipe feed through on the AHU/duct wall.
Important: when mounted the drain pipe must have a downslope of 1 to max. 2 % towards the
AHU/duct wall.
2. Drill hole ø55 mm (2.2") for the drain pipe into AHU/duct wall.
3. Lead drain pipe ø54 mm (2.125") through the wall feed through and connect it to the tank using the
elbow union (supplied as part of the external installation kit).
4. Cut drain pipe to length.
Important: the end of the drain pipe must protrude 46 mm (1.81") minimum to 70 mm (2.75") maxi-
mum of the AHU/duct wall. Otherwise correct mounting of hydraulic module is not possible.
5. Important: De-bur leading edge of drain pipe, to avoid damage to the rubber seal.
6. Seal pipe around feed through using silicone-free sealant.
7. Apply silicone free grease (e.g. gasket grease) onto the surface of the drain pipe and onto the
surface of the rubber sealing inside the connector of the hydraulic module.
8. Then, slide the connector bore of the hydraulic module carefully onto the drain pipe until it comes to
a stop.
9. With the help of a spirit level align hydraulic module exactly horizontal. Then, x the hydraulic
module to the AHU/duct wall using appropriate xings.
Fig. 16: Mount the hydraulic module of ME Circulating System (external installation)
46 mm
1.8"
54 mm
2.1"
constant
downslope
1 to max. 2%
27Installation
4.4 Water installation
4.4.1 Notes on water installation
The layout of the water piping (distribution, supply and drain water piping) depends on the system version.
Refer to the corresponding chapter for detailed information and observe the following installation notes.
Notes on distribution piping
The distribution piping is to be carried out according to the gures found in chapter 4.4.2 – Wa-
ter installation (internal installation) and 4.4.3 – Water installation (external installation) and the
applicable local regulations for water installations. The indicated connection specications and
connection layout must be observed.
The distribution piping is made of ø15 mm (0.625") black plastic hoses (supplied as part of the
internal installation kit) or stainless steel pipe (supplied as part of the external installation kit).
Make sure the distribution hoses have a constant downslope (no sagging) to the hydraulic module
and are not kinked over the entire length.
All connections are made with push-t ttings.
On systems where the hydraulic module is mounted outside the duct, the supplied feed throughs
and hose supports must be used.
General notes on installation of the hoses
Use the supplied black plastic hoses ø15 mm (0.625") only. For hygienic reasons do not use
other hoses (except products supplied by your Condair distributor).
When cutting hoses use an appropriate cutting tool providing straight, kink-free cuts.
CAUTION!
After cutting the hoses any sharp edges must be deburred otherwise the couplings may be
damaged.
The hoses must be free of kinks and other damage (longitudinal scratches or misshaped ends,
in particular).
When cutting hoses always add at least 5 to 10 mm (0.2" to 0.4") to the required length. This
way the hoses can be fastened correctly (down to the stop) to the push-t couplings.
Make sure the hoses are not kinked and pay attention to the mini mum bend radius of 100 mm (4").
Do not lead hoses past hot system components (max. ambient temperature is 40 °C/104 °F).
After installation verify correct fastening of all hoses. Correctly mount ed hoses can not be re-
moved without pressing the locking ring.
CAUTION!
In order to avoid damage caused by leaking water during operation, all hoses must correctly be
secured against accidently pulling out.
28 Installation
Notes on water supply
The water supply is to be carried out according to the gures found in chapter 4.4.2 – Water
installation (internal installation) and 4.4.3 – Water installation (external installation) and the ap-
plicable local regulations for water installations. The indicated connection specications must
be observed. The installation material must be supplied by the customer.
The installation of a shut-off valve in the supply line is mandatory and should be made as close
as possible to the hydraulic module.
Regarding supply water quality see appendix.
The installation material must be pressure-proof and certied for use in drinking water supply
systems.
The wall feed through for the water supply must be done by the customer.
Important: after installation the water supply pipe has to be sealed around the feed through
using silicone-free sealant.
Important! To prevent new systems being contaminated with low quality water the entire
water supply line must be ushed and tested until the supply water and the bacteria counts,
are in line with the water quality specications, before connecting it to the hydraulic
module. For water quality requirements refer to chapter 5.1 – Inlet water quality requirements.
Notes on water drain
The water drain is to be carried out according to the gures found in chapter 4.4.2 – Water
installation (internal installation) and 4.4.3 – Water installation (external installation) and the
applicable local regulations for water installations. The indicated connection specications must
be observed. The installation material must be supplied by the customer.
Make sure the drain line is installed with a constant down-slope down to the tundish.
The drain pipe must not touch the tundish, allow air gap of min 20 mm (0.8").
Make sure the drain pipe, the drain trap and the tundish are correctly xed and easily accessible
for inspections and cleaning purposes.
Access hole for the drain pipe through the duct/AHU must be provided by the customer.
Important: after installation the drain pipe has to be sealed around the feed throughs us-
ing silicone-free sealant.
The minimum inside diameter of the drain pipe must be maintained throughout the entire length!
The drain pipe must be vented to the interior of the duct in accordance with the gures found in
chapter 4.4.2 – Water installation (internal installation) and 4.4.3 – Water installation (external
installation).
Notes on pressure equalisation for external mounted systems
The hydraulic module must be equipped with a pressure equalisation pipe connected to the
interior of the duct to ensure the level in the hydraulic module corresponds with the level in the
tank inside the duct (see gure in chapter 4.4.3 – Water installation (external installation).
29Installation
4.4.2 Water installation (internal installation)
Stages
(box rows)
Connection layout
distribution hoses
2
2 1
4 2 1 3 5
3
2 1 3
4 2 1 3 5
4
4 2 1 3
4 2 1 3 5
5
4 2 1 3 5
4 2 1 3 5
Distribution hoses
ø15 mm (0.625")
constant slope
(no sagging)
Water supply push-t
connector ø15 mm (0.625")
Feed throughs
(supplied)
Drain pipe ø28 mm (1.125")
with constant downslope
1...2 % (not supplied)
Shut-off valve
(supplied)
Drain trap (not supplied)
Drain trap height: Allow a height of 25 mm
(1") for every 250 Pa of duct pressure (e.g.
100 mm (4") for 1000 Pa duct pressure)
Drain pipe vent (mandatory, not sup-
plied), highest point of vent tube must
be above max. water level of tank
Open tundish (not supplied)
AHU drain with drain trap (not supplied)
Drain trap height: Allow a height of 25 mm
(1") for every 250 Pa of duct pressure (e.g.
100 mm (4") for 1000 Pa duct pressure).
2...5 bar
Fig. 17: Water installation (internal installation)
30 Installation
4.4.3 Water installation (external installation)
Stages
(box rows)
Connection layout
distribution hoses
2
2 1
4 2 1 3 5
3
2 1 3
4 2 1 3 5
4
4 2 1 3
4 2 1 3 5
5
4 2 1 3 5
4 2 1 3 5
Distribution hoses
ø15 mm (0.625")
constant slope
(no sagging)
Water supply push-t
connector ø15 mm (0.625")
Feed through
(supplied)
Drain pipe ø28 mm (1.125")
with constant downslope
1...2 % (not supplied)
Shut-off valve
(supplied)
Drain trap (not supplied)
Drain trap height: Allow a height of 25 mm
(1") for every 250 Pa of duct pressure (e.g.
100 mm (4") for 1000 Pa duct pressure)
Pressure equalisation pipe
(mandatory, not supplied)
Open tundish (not supplied)
Important: the drain pipes must not touch the
tundish - allow air gap of min 20 mm (0.8" ).
AHU drain with drain trap (not supplied)
Drain trap height: Allow a height of 25 mm
(1") for every 250 Pa of duct pressure (e.g.
100 mm (4") for 1000 Pa duct pressure).
2...5 bar
Fig. 18: Water installation (external installation)
Drain pipe vent (mandatory,
not supplied), highest point
of vent tube must be above
max. water level of tank
31Installation
4.5 Mounting the control unit
4.5.1 Notes on positioning the control unit
Please observe the following notes when positioning the Condair ME control unit:
The control unit can be mounted directly outside to the AHU/air duct or to a wall or stand (not sup-
plied).
The control unit should ideally be positioned as close to the evaporative module as possible for ease
of servicing and maintenance.
Note: the hydraulic module of Condair ME Controls is equipped with a 5 m (16.4’) 14-core electrical
inter-connecting cable for connection to the control unit. Make sure the control unit is mounted within
the range of the inter-connecting cable.
The control unit is protected according to IP21. Make sure the control unit is installed in a drip-proof
location and the admissible ambient conditions are complied with (see technical data in the opera-
tion manual to the Condair ME Control).
The power supply to the control unit must be equipped with an electrical isolator (not supplied) tted
within 1 m (39") for purposes of maintenance and emergencies. When positioning the control unit
make sure the electrical isolator can be mounted within that range.
32 Installation
Fig. 19: Mounting the control unit of Condair ME Controls
4.5.2 Mounting the control unit
Important: if multiple systems have been supplied to a site, ensure that the serial number on the control
panel corresponds to the serial number marked on the evaporative module.
Mounting procedure:
1. Mark the attachment points for the upper and lower wall support at the desired position with the help
of a level.
2. Fix the wall supports to the wall using appropriate xings. Before tightening the xings adjust the
wall supports horizontally using a level.
4. Unlock the screw of the front panel of the control unit, then remove the front panel.
5. Hang up the control unit onto the wall support and secure using the two M6 bolts in the top corners
of the control unit.
6. Reattach the front panel and secure it with the screw.
210
52.5
52.5
(8.3
")
(2.1
")
(2.1
")
315
(12.4
"
)
64.5
(2.5")
450
(17.7")
300
(11.8")
33Installation
4.6 Electrical installation
4.6.1 Notes on electrical installation
DANGER!
Risk of electric shock!
The control unit contains live mains voltage. Live parts may be exposed when the control unit
is open. Touching live parts may cause severe injury or danger to life.
Prevention: The control unit must be isolated from the mains before commencing any installation work.
WARNING!
The electronic components inside the control unit are very sensitive to electrostatic discharge.
Before carrying out installations work inside the control unit, appropriate measures must be taken
to protect the electronic components against damage caused by electrostatic discharge (ESD
protection).
All work concerning the electrical installation must be performed only by skilled and qualied
technical personnel (e.g. electrician or technicians with appropriate training) authorised by
the owner. It is the owner’s responsibility to verify proper qualication of the personnel.
The electrical installation must be carried out according to the wiring diagrams (see chapter 4.6.2 –
Wiring diagram Condair ME Control), the notes on electric installation as well as the applicable local
regulations. All information given in the wiring diagram must be followed and observed.
All cables must be lead into the control unit via the cable feed throughs on the bottom side of the
control unit. The mains cable must be lead into the control unit via the cable opening equipped with
the cable gland on the right side.
Fig. 20: Cable feed throughs control units
Cable gland power supply
Cable feed throughs control wiring
34 Installation
All cables from the hydraulic module mounted inside the AHU/air duct must be lead via appropriate
cable gland(s) out of the AHU/air duct.
Ensure cables are secured in such a way that the insulation is not damaged by sharp edges and so
that they do not create a trip hazard.
Observe and maintain maximum cable length and required cross section per wire according to local
regulations.
The mains supply voltage must match the respective voltage stated on the rating plate.
35Installation
4.6.2 Wiring diagram Condair ME Control
Control unit
PMC-24V100W1AA PMC-24V100W1AA
Ethernet
3V
CR2032
X1X2
SF
USB
J1
RJ45
BAT
SD
X3X4
X19
S1
X7
CS
F1 (1 AT)
F2 (630 mAT)
X9X8 X10
X20
X11 X12
X13X14X15.1X15.2X16
T3T1 T2
B5
J6
J10
J12
J14
J2
24V IC
GND
H1
B4
Error
1 2 3
Service
4 5 6
Running
7 8
Unit On
9 10
JP5: 10V
JP4: 24V
JP/TR
B3
K1
K2
B2
B1
PMC-24V100W1AA
B8
RS485
UV
NL
NL1
NL1
PE NL
PE
PE
UV–
UV+
PE
PMP N
PMP L
PE
DOSP–
DOSP+
PE
N/GND
L/24V P
AIRT+
SHIELD
AIRT–
GND
24V P
24/10 V
TMP
GND
HUM
24V E
Enable
D–
GND
D+
D–
GND
D+
24V E
GND
GND
24V E
24V E
24V E
24V E
24V E
LEAK
CS1
LVL DP
GND
FQ+
24V P
N FQ2
N FQ1
ERR FQ
GND
24V P
5V P
GND
PS4
PS5
24V 3
GND
GND
GND
24V 1
24V 2
SC2
SC1
24V SCB
GND
24V P
24V P
24V SCA
Y2
Y1
Y10
Y9
Y8
Y7
Y6
Y5
24V P
Y11
Y4
Y3
PS1
PS2
PS3
LEVEL/T
GND
24V P
Y
B7
A2A1
GND
+
GND
+
GND
+
GND
24V+
X5
NF
S3
L N
1 2 L N L N
PE L
100...240 V/1~/50..60 Hz
N
F4
Q
M1
B6
M
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14A A B B
min.
°C
B9
J2
J3
X4
F3
D.PUMP U.V. SUPPLYD.LVL
Tmp bk
Cnd bn
Cnd wh
Tmp bu
Shield
LS1
LS2
Fig. 21: Wiring diagram Condair ME Control
36 Installation
Legend wiring diagram Condair ME Control
A1 Driver board
A2 Control board
B1 Ventilation interlock
B2 Max. humidity monitor
B3 Air ow monitor
B4 Temperature and conductivity measuring
B5 Sensor temperature and conductivity measuring
B6 Level sensor dosing pump (option)
B7 Demand or humidity/temperature signal
B8 External On/Off switch (external enable)
B9 Air temperature monitoring duct (option)
BAT Backup battery (CR2032, 3V)
CS Current sensor (UV lamp)
D.LVL Terminal level switch dosing liquid tank
D.PUMPTerminal dosing pump
F1 Internal fuse mains supply (1 A slow acting)
F2 Fuse 10/24 VDC supply(630 mA slow acting)
F3 Internal fuse mains supply (6.3 A fast acting)
F4 External fuse mains supply (10 A slow acting)
H1 Remote operating and fault indication board (option)
J1 Cable bridge if no external On/Off switch is connected
J2 Cable bridge demand signal (for commissioning only)
J3 Cable bridge if no safety chain is connected
JP4 Jumper tted= 24 V on X16 (JP5 removed)
JP5 Jumper tted= = 10 V on X16 (JP4 removed)
JP/TR Jumper tted on the last driver board
K1 External safety chain
K2 Cable harness from hydraulic module
LS1 Leakage monitoring board (option)
LS2 Sensor leakage monitoring (option)
M1 Dosing pump (option)
NF Mains lter
Q Electrical isolator
S1 Humidication On/Off switch
S3 On/Off switch control unit
SD Memory card
SF Snap ferrite (wrap cable 3 times through ferrite)
SUPPLYTerminal mains supply voltage
T1..T3 24V power supply (T3 for systems with 4 or 5 stages only )
UV UV lamp (option)
U.V. Terminal UV lamp
X4 Terminal cable harness hydraulic module
37Installation
4.6.3 Installation work
Note: for the connection of the available options please refer to the installation and operation manual
of the corresponding option.
Control signal (Y)
Note: the control settings must be done via the control software of the Condair ME Control. Please
refer to the operation manual of the Condair ME Control.
X16
JP5: 10V
JP4: 24V
B7
24 V
TMP
GND
HUM
24V E
Enable
P/PI
24 V
rh
24 V - voltage supply
Control unit
External continuous humidity or temperature con-
troller
An external continuous humidity or temperature controller
is to be connected to the contacts “HUM” (+) and “GND”
(–) of the terminal block “X16” on the driver board in ac-
cordance with the wiring diagram. The admissible signal
values can be found in the technical data table in the
operation manual. The connecting cable must either be
fed through the rectangular cable feed through or a free
cable gland into the control unit.
Note: If 24V supply is used for the external controller
Jumper “JP4: 24V” must be set and Jumper “JP5: 10V”
must be removed.
The shielding of the control signal must be connected
to terminal “GND”.
Caution! If the shielding of the control signal is already
connected to a po ten tial or a grounded conductor,
do not connect it to terminal “GND”.
X16
JP5: 10V
JP4: 24V
Y
B7
HUM
24/10V
TMP
GND
HUM
24V E
Enable
24 V
rh
24 V - voltage supply
Control unit
Humidity sensor
A humidity sensor is to be connected to the contacts
“HUM” (+) and “GND” (–) of the terminal block “X16” on
the driver board. The admissible signal values can be
found in the technical data table in the operation manual.
The connecting cable must either be fed through the
rectangular cable feed through or a free cable gland
into the control unit.
Note: If 24V supply is used for the external controller
Jumper “JP4: 24V” must be set and Jumper “JP5: 10V”
must be removed.
The shielding of the control signal must be connected
to terminal “GND”.
Caution! If the shielding of the control signal is already
connected to a po ten tial or a grounded conductor,
do not connect it to terminal “GND”.
38 Installation
X16
JP5: 10V
JP4: 24V
24/10V
TMP
GND
HUM
24V E
Enable
Y
B7
TEMP
24 V
T
24 V - voltage supply
Control unit
Temperature sensor
A temperature sensor is to be connected to the contacts
“TMP” (+) and “GND” (–) of the terminal block “X16” on
the driver board. The admissible signal values can be
found in the technical data table in the operation manual.
The connecting cable must either be fed through the
rectangular cable feed through or a free cable gland
into the control unit.
Note: If 24V supply is used for the external controller
Jumper “JP4: 24V” must be set and Jumper “JP5: 10V”
must be removed.
The shielding of the control signal must be connected
to terminal “GND”.
Caution! If the shielding of the control signal is already
connected to a po ten tial or a grounded conductor,
do not connect it to terminal “GND”.
X16
JP5: 10V
JP4: 24V
24/10V
TMP
GND
HUM
24V E
Enable
B7
ON/Off
Control unit
24 VDC On/Off humidistat
A 24 VDC On/Off humidistat is to be connected to the
contacts “24V” and “HUM” of the terminal block “X16”
on the driver board. The connecting cable must either
be fed through the rectangular cable feed through or a
free cable gland into the control unit.
Note: for the 24 VDC On/Off control jumper “JP5: 10V”
must be removed and Jumper “JP4: 24V” must be set.
The shielding of the control signal must be connected
to terminal “GND”.
Caution! If the shielding of the control signal is already
connected to a po ten tial or a grounded conductor,
do not connect it to terminal “GND”.
39Installation
External safety circuit
Control unit
X1
B3
K1
B2
B1
SC2
SC1
J2
To guarantee the safety of the humidication/cooling
system, monitoring the operation by means of a safety
circuit “K1” is an absolute requirement.
To accomplish this, the potential-free contacts of ex-
ternal moni t or ing devices (e.g. ventilation interlock “B1”,
safety high limit humidistat “B2”, airow monitor “B3”, etc.)
are connected in series to the contacts “SC1” and
“SC2” of the terminal block “X1” on the driver board
in accordance with the wiring diagram. The connecting
cable must either be fed through the rectangular cable
feed through or a free cable gland into the control unit.
If, for whatever reason, no external monitoring devices
are connected, a cable bridge “J2” must be installed on
the contacts “SC1” and “SC2” of the terminal block “X1”.
Do not apply any extraneous voltage to contacts “SC1”
and “SC2” via the contacts of the external monitoring
devices.
The cross-section of the connecting cable must comply
with the applicable local regulations (minimum 1 mm
2
).
External enable
Control unit
X16
24/10V
TMP
GND
HUM
24V E
Enable
S2
J1
The potential-free contact of an external enable switch
is connected to the contacts “24 V E” and “Enable”
of the terminal block “X16” on the driver board in ac-
cordance with the wiring diagram. The connecting cable
must either be fed through the rectangular cable feed
through or a free cable gland into the control unit
If no external enable switch is connected, a cable bridge
“J1” must be installed on the contacts “24V E” and “En-
able” of the terminal block “X16”.
CAUTION! Do not apply any extraneous voltage to
terminals via the enable switch.
40 Installation
Connecting the 14-core inter-connecting cable from the hydraulic module
K2
X4
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Level Sensor 1
GND Pumps 4&5, Drain & Sensor
GND Pumps 1,2&3
VCC Pumps 1,2&3
VCC Pumps 4&5
Signal Pump 4
Signal Pump 2
Signal Pump 1
Signal Pump 3
Signal Pump 5
Signal Drain Pump
VCC Drain&Inlet Valve
GND Drain Valve
GND Inlet Valve
Control unit
The 14-core inter-connecting cable “K2” from the hy-
draulic module is to be connected according to the
wiring diagram to the terminals “X4”. The 14-core inter-
connecting cable must be fed through the rectangular
cable feed through into the control unit.
Note: The 5 m inter-connecting cable has to be cut to
length on site.
Connecting the remote operating and fault indication (option)
H1
Error
1 2 3
Service
4 5 6
Running
7 8
Unit On
9 10
Control unit
The optional remote operating and fault indication board
contains four potential-free relay contacts for the con-
nection of the following operating and fault indications:
“Error”:
This relay is activated if an error is present.
“Service”:
This relay is activated when the set service interval
has expired.
“Running” (Humidication/Cooling):
This relay closes as soon as the Condair ME is hu-
midifying/cooling.
“Unit on”:
This relay closes as soon as the voltage supply to
the control unit of the Condair ME is switched on.
The connecting cable must either be fed through the
rectangular cable feed through or a free cable gland into
the control unit.
The maximum contact loading is 250V/8A.
Appropriate suppressor modules are to be used for the
switching of relays and miniature contactors.
41Installation
Mains voltage supply
PE L
100...240 V/1~/50..60 Hz
N
F4
Q
L N
F3
SUPPLY
Control unit
CAUTION! Before connecting the mains voltage sup-
ply, make sure the voltage indicated on the rating
plate meets the local line voltage. Otherwise, do not
connect the control unit.
Connect mains voltage supply 100...240 V/1~/50...60 Hz
in accordance with the wiring diagram, to the terminal
block “SUPPLY” in the control unit. The mains supply
cable must be led into the control unit via the cable gland
on right side on the bottom of the control unit.
The installation of the fuse F4, the electrical isolator “Q”
(all pole disconnecting device with a minimum contact
clearance of 3 mm/0.12") and a fault current protection
switch with 30 mA trigger current (by client) in the mains
supply line are mandatory.
The electrical isolator must be mounted in direct proximity
of the control unit (max. distance 50 cm/19.69") and must
be easily accessible in a height between 0.6 m/23.62"
and 1.9 m/74.8" (recommended: 1.7 m/66.93").
The cross-section of the mains cable must comply with the
applicable local regulations (min. 1.5 mm
2
/0.0023 sq.in.).
42 Appendix
5 Appendix
5.1 Inlet water quality requirements
Cond air Plc recommends that the Condair ME must be connected to a clean, wholesome (drinking
water quality) mains water supply. For areas of hard water and to minimise scale build up the water
supply may be treated by a reverse osmosis system (RO).
Reverse Osmosis
For Condair ME systems supplied with RO water it is recommended that the system is operated within
the following parameters. The use of RO water fed tanks and reservoirs is only permitted as part of a
managed and hygiene monitored water system and should form part of the water system risk assessment.
System Conductivity
Condair ME Control > 5 μS cm-1 at 20 °C (68 °F)
Other Water Supplies
There is a growing demand to utilise sustainable water sources to help overcome scarcity challenges
and recycle water. It is possible to use high-quality, treated efuent for non-wholesome applications.
The following gives guidance on reclaimed water quality that may be acceptable for use within the Con-
dair ME. “Efuent treated water”, must be treated by an appropriate water treatment method and risk
assessed to ensure it is safe and suitable for use in the Condair ME unit. It is the responsibility of the
user to ensure that the water supply system is part of a managed, hygiene monitored water system, risk
assessed and complies with the local regulations and bylaws.
Below are example water conditions that would allow a Condair ME to operate within specication.
Parameter Content in supply water Concern
Temperature < 20 °C (68 °F) Warm water favours growth of bacteria
Aluminium - No specic concerns
Ammonium < 0.50 mg/l Odour passed to air
Calcium < 300 mg/l Scale formation
Chloride < 300 mg/l Corrosion of stainless steel
Colour None Not directly a concern
Copper < 1 mg/l Deposits and corrosion stimulation
Conductivity < 650 μS cm-1 at 20°C (68 °F) Total hardness and scale formation.
pH 6.5 to 9.5 Acid or Alkali damage to equipment.
Iron < 0.5 mg/l
Deposit formation on oxidation and a critical support
role in Legionella growth.
Manganese < 0.1 mg/l Deposit formation
Nitrate - No specic concerns
Nitrite - No specic concerns
Odour Acceptable to users Smell passed to air
Sulphate < 250 mg/l No specic comments
43Appendix
Parameter Content in supply water Concern
Sodium - No specic concerns
Total organic carbon - No specic concerns
Turbidity < 5 NTU No specic concerns
Colony count 22°C < 1000 cfu/ml Indicator of contaminated water supply
Coliform bacteria < 10 cfu/100 ml Indicator of poor water quality
Legionella bacteria < 50 cfu/1000 ml Risk of Legionella
Pseudomonas species < 10 cfu/100 ml Indicator of slime forming potential
Controlled Substances
DANGER!
Many of the following controlled substances are toxic; for example vinyl chloride is highly toxic, am-
mable and carcinogenic and could be evaporated off the matrix and passed to the airow. Therefore it
is important to note that any supply water coming from complex waste water, which may contain these
contaminates should therefore be carefully risk assessed by a water treatment specialist.
Controlled substances
Clostridium perfringens (including spores)
Acrylamide
Antimony
Arsenic
Benzene
Benzo(a)pyrene
Boron
Bromate
Cadium
Chromium
Cyanide
1,2-dichloroethane
Epichlorohydrin
Fluoride
Lead
Mercury
Nickel
Pesticides
Polycyclic aromatic hydrocarbons
Selenium
Tetrachloroethene and Trichloroethene
Trihalomethanes
Vinyl chloride
Water Monitoring
The Condair ME water system must be monitored for hygiene as part of the maintenance programme.
Condair Plc
Artex Avenue, Rustington,
Littlehampton, West Sussex.
BN16 3LN (UK)
TEL: +44(0)1903 850 200
FAX: +44(0)1903 850 345
www.condair.co.uk
CONSULTING, SALES AND SERVICE:
39


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