Condair RH Series User manual

2598422-B EN 2103
Humidication and Evaporative Cooling
INSTALLATION AND
OPERATION MANUAL
Condair HumiLife – The proven steam solution
Condair RH-VS

Thank you for choosing Condair
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Installation site:
Model:
Serial number:
Proprietary rights
This document and the information disclosed herein are proprietary data of Condair Group AG. This instruction
manual (including extracts therefrom) may not be reproduced or passed on, nor may the contents thereof be used
by or passed on to any third party without the written permission of Condair Group AG. Any infringements are
punishable 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 the installation and operation manual 5
2 For your safety 7
3 Checking the delivery / storage and transport 9
3.1 Scope of delivery Condair RH-VS steam humidication system 9
3.2 Checking the delivery 10
3.3 Storage and Transportation 10
4 Product overview 11
4.1 System overview Condair RH-VS 11
4.2 Functional description 12
4.3 Accessories 12
4.4 Humidity control variants 13
4.4.1 System 1: Room humidity control via extract air humidity 14
4.4.2 Room humidity control with continuous limitation of the supply air humidity 16
5 Installation 18
5.1 Safety instructions for mounting and installation work 18
5.2 Requirements for the installation room 19
5.3 Requirements for the ventilation system (HRV) 20
5.4 Placement and installation of the steam humidier 20
5.5 Placement and installation of the steam distribution unit 21
5.5.1 Placement of the steam distribution unit 21
5.5.2 Installation of the steam distribution unit 22
5.6 Installation of the steam and condensate hoses 23
5.6.1 General instructions for steam and condensate hose routing 23
5.6.2 Examples of correct routing of the steam and condensate hoses 24
5.6.2.1 Hose layout with a constant up- and downslope of the steam hose 24
5.6.2.2 Hose layout with condensate drain at the lowest point of the steam hose 25
5.6.2.3 Hose layout when installing the steam humidier above the ventilation unit between the ventilation
pipes 26
5.7 Placement and installation of the humidity control sensors 27
5.7.1 Placement of the sensors for the humidity control 27
5.7.2 Installation of the maximum humidistat "B1" 27
5.7.3 Mounting of the humidity sensors "A1" (Signal Y1) and "A2" (Signal Y2) 28
5.7.4 Mounting the air ow monitor "B2" (optional) 29
5.7.5 Connection of the sensors to the Condair RH steam humidier 29
5.8 Checking the installation of the Condair RH-VS steam humidication system 30
6 Operation 31
6.8.1 Operator inspections during operation 31
7 Maintenance 32
7.1 Important information for maintenance 32
7.2 Maintenance of the Condair RH-VS steam humidication system 33
7.3 Maintenance of the Condair RH steam humidier 34

4Contents
8 Troubleshooting 35
8.1 Troubleshooting guide 35
9 Decommissioning/Disposal 36
9.1 Taking out of service 36
9.2 Disposal/Recycling 36
10 ProductSpecications 37
10.1 Technical Data 37
10.2 Dimensional drawing 38

5Introduction
1 Introduction
1.1 Firstthingsrst!
Thank you for choosing the Condair RH-VS steam humidication system which is supplied in a
bundle consisting of the Condair VS steam distribution unit and the CondairRHsteamhumidier.
The Condair RH-VS steam humidication system incorporates the latest technical ad van ces and meets
all recognized safety standards. However, improper use of the steam humidication system may result
in danger to the user or third parties and/or damage to property.
To ensure a safe, proper, and economical operation, please observe and comply with all of the infor-
mation and safety instructions contained in this document and in the separate documentations of the
components installed in the used together with the steam 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 and operation manual
Scope
The subject of this installation and operation manual is the Condair RH-VS steam humidication system.
Options and accessories for the steam humidication system are described only to the extent necessary
for proper operation. Further information on options and accessories can be obtained in the respective
instructions.
The information in this installation and operation manual is limited to the installation, operation, main-
tenance and troubleshooting of the Condair RH-VS steam humidication system and is meant for ap-
propriately trained groups of people who are adequately qualied for the respective work.
This installation and operation manual is accompanied by various separate documents that are included
in the delivery or enclosed with the options and accessories. Where necessary, appropriate cross-
references are made to these publications in the installation and operation manual.

6Introduction
Denitions
CAUTION!
The signal word "CAUTION" in conjunction with the associated symbol in a circle indicates information
in this manual which, if disregarded, could result in damage to and/or malfunction of the device or
other equipment.
WARNING!
The signal word "WARNING" in conjunction with the general hazard symbol indicates safety and hazard
information in this manual which, if neglected, may cause injury to persons.
DANGER!
The signal word "DANGER" in conjunction with the general hazard symbol indicates safety and hazard
information in this manual which, if neglected, may lead to severe injury or even death of persons.
Storage
Keep this installation and operation manual in a safe place where it can be accessed for further use at
all times. If the steam humidication system changes hands, this installation and operation manual must
be transferred to the new operator.
Should you lose the installation and operation manual, please contact your Condair representative.
Language versions
This installation and operation manual is available in various languages. Please contact your Condair
representative for information.

7For your safety
2 For your safety
General
Any person assigned to work on the Condair RH-VS steam humidication system must have read and
understood this installation and operation manual before starting work.
Knowing and understanding the contents of this installation and operation manual is a basic require-
ment for protecting personnel against any kind of danger, to prevent faulty operation, and to operate
the system safely and correctly.
All pictograms, signs and markings afxed to the Condair RH-VS steam humidication system must be
observed and kept in a clearly legible condition.
Qualicationofpersonnel
All actions described in this installation and operating manual may only be carried out by trained and
adequatelyqualiedpersonnelauthorizedbytheoperator.
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 with work on the Condair RH-VS steam humidication system
know and adhere to the regulations on work safety and accident prevention.
Intended use
TheCondairRH-VSsteamhumidicationsystemisintendedexclusivelyforductairhumidica-
tionacontrolledresidentialheatrecoveryventilationsystem(HRV)withinthespeciedoperating
conditions. Any other use without the written consent of Condair, is considered as not conforming with
the intended purpose and may lead to the steam humidication system becoming dangerous.
Operation of the equipment in the intended manner requires that all the information contained in this
installation and operation manual are observed (in particular the safety instructions).
HazardsthatmayarisefromtheCondairRH-VSsteamhumidicationsystem:
DANGER!
Dangerofelectrichazard!
TheCondairRHsteamhumidierismainspowered.Livepartsmaybeexposedwhentheunit
is open. Touching live parts may cause severe injury or danger to life.
Forthisreason:The steam humidier 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 unit is closed and properly locked.
DANGER!
Dangerofelectrichazard!
If the main cable of the Condair RH is damaged, it must be replaced by the manufacturer, his
customermaintenanceorasimilarlyqualiedpersoninordertoavoidhazards.

8For your safety
WARNING!
Hotsteam-Scaldinghazard!
TheCondairRH-VSsteamhumidicationsystemworkswithhotsteam.Contactwithhotsteam
may cause scalding.
Forthisreason: Do not carry out any tasks on the Condair RH-VS steam humidication system
(steam piping, steam distribution unit, etc.) when the system is in operation. If the Condair RH-VS
steam humidication system is not tight, immediately take the Condair RH steam humidier feeding
the Condair RH-VS steam humidication system (see installation and operation manual of the Condair
RH steam humidier) out of service and properly seal the Condair RH-VS steam humidication system
before recommissioning.
WARNING!
Burnhazard!
Duringoperation,thecomponentsoftheCondairRH-VSsteamhumidicationsystem(steam
hose, steam distributor, etc.) heat up to 100°C. Contact with the hot components may cause
burns.
Forthisreason: Before commencing work on the Condair RH-VS steam humidication system, take
the Condair RH steam humidier feeding the Condair RH-VS steam humidication system out of ser-
vice (see installation and operation manual of the Condair RH steam humidier) and then wait until
the components have cooled down sufciently to avoid the risk of burns.
Forthisreason: Where there is a risk that people can touch the steam and condensate hose, insulate
them.
WARNING!
High humidity can promote the growth of biological organisms and thereby endanger the
health of people.
Forthisreason: To prevent this, the duct or steam distribution unit into which the steam is blown must
be cleaned regularly in accordance with the applicable hygiene guidelines.
Preventing unsafe operation
All persons assigned to work on the Condair RH-VS steam humidication system are obliged to im-
mediately report to the operator's responsible parties any alterations to the unit that affect safety. The
Condair RH steam humidier feeding the Condair RH-VS steam humidication system should be taken
out of service immediately and secured in such a way that it cannot be unintentionally switched on.
Unauthorizedmodicationstothedevice
Noadditionsormodications may be made to the Condair RH-VS steam humidication system without
the written permission of Condair.
When replacing any defective components on the unit, use only genuine accessories and spare parts
from your Condair representative.

9Checking the delivery / storage and transport
3 Checking the delivery / storage and transport
3.1 ScopeofdeliveryCondairRH-VSsteamhumidicationsystem
1Condair VS steam distribution unit
2Condair RH steam humidier
3Fixing material
4Mains adapter
5Drain hose (ø22/29 mm, L= 2 m)
6 PEX armored water supply hose with gaskets
(3/4" / 3/4", L=1.5 m)
7Steam hose DS22 (L= 4 m)
8Condensate hose (ø8/ø12mm , L= 4 m)
9Slotted fabric hose (ø20 mm, L= 1 m)
10 Hose clamps (3 pcs)
11 EcoTherm insulation hose with O-rings (L= 4 m)
12 Humidity sensor CDC (A1)
13 Maximum humidistat CHD-S (B1)
14 Air ow monitor CDA-S (B2), optional accessory
15 Ceiling bracket RH (accessory)
16 External molded steam hose (accessory)
16 Reductions (accessory) for the steam distribution unit
Fig. 1: Scope of delivery Condair RH-VS steam humidication system
L= 4 m L= 4 m L= 1m
L= 2 m
L= 4 m
1
2
7 8 9
11
10
4
5
16
15
3
6
13
12
14
17
Accessories
Condair RH-VS
Steamhumidicationsystem

10 Checking the delivery / storage and transport
3.2 Checking the delivery
After receiving:
– Inspect shipping boxes for damage.
Any damages of the shipping boxes must be reported to the shipping company without delay.
– Check packing slip to ensure all parts has been delivered.
All material shortages are to be reported to your Condair supplier within 48 hours after receipt of the
goods. Condair Group AG 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 unit data
stated on the specication label.
3.3 Storage and Transportation
Storing
Until installation store the components of the Condair RH-VS steam humidication system in its original
packaging in a protected area meeting the following requirements:
– Room temperature: 5 ... 40 °C
– Room humidity: 10 ... 75 %rh (non condensing)
Transportation
For optimum protection always transport the components of the Condair RH-VS steam humidication
system in their original packaging and use appropriate lifting/transporting devices.
Packaging
If the packaging is to be disposed of, observe the local regulations on waste disposal. Please recycle
packaging where possible.

11Product overview
4 Product overview
4.1 System overview Condair RH-VS
1Condair VS steam distribution unit
2Steam connection ø22 mm steam distribution unit
3Condensate connection ø10 mm
4Air ow direction
5Maximum humidistat CHD-S (B1, supplied)
6 Humidity sensor CDC (A1, supplied)
7 Air ow monitor (B2, optional accessory)
8Ventilation unit HRV
9Insulation hose ø20 mm (slotted fabric hose)
10 Condensate hose ø8/12 mm (supplied)
11 Steam hose DS22 (supplied)
12 Insulation hose (supplied)
13 Steam connection ø22 mm steam humidier
14 Condair RH steam humidier
15 Water drain connection ø20 mm
16 Water supply connection G 3/4"
17 Water supply hose (supplied)
18 Filter valve (accessory Z261)
or shut-off valve and water lter 125 µm)
19 Water drain hose ø20/26 mm (supplied)
20 Open funnel with trap (by others)
Fig. 2: System overview Condair RH-VS steam humidication system
A1
B1
B2
1
2
7
5
4
6
14
16
17
18
15
19
20
20
3
8
10
9
11
12
13

12 Product overview
4.2 Functional description
The Condair RH-VS steam humidication system consists of the Condair RH steam humidier and the
Condair VS steam distribution unit and has a maximum steam output of 1.8 kg/h.
The steam humidier can either be mounted on a wall or suspended from a ceiling (e.g. between the
pipes of the ventilation unit) using the ceiling bracket available as an accessory.
The Condair RH-VS steam humidication system is designed for vertical installation and is connected
directly to the connection of the ventilations unit supply air outlet. The maximum humidistat (B1, supplied)
is mounted at the designated position in the steam distribution housing. The humidity sensor (A1, sup-
plied) and an optional ow monitoring device are installed at the corresponding position in the ventilation
ducts of the residential heat recovery ventilation system (HRV) depending on the type of humidity control.
The steam distribution pipe of the Condair VS steam distribution unit allows condensate and aerosol-
free steam distribution with widely varying supply air conditions (temperature and air volume ow) in a
residential heat recovery ventilation system (HRV). Due to the special design of the steam distribution
pipe, the humidication distance is very short and takes the often very limited space for controlled resi-
dential ventilation into account.
The steam distribution unit, which is ready for assembly ex factory, can be easily installed in the verti-
cal supply air duct of the residential heat recovery ventilation system using the reductions available in
various dimensions.
Note: No reductions are required for supply air lines ø160 mm.
The condensate that forms in the steam hose and the steam distribution pipe is discharged through the
condensate drain line or ows back to the steam cylinder of the steam humidier via the steam hose.
4.3 Accessories
The following accessories are available for the Condair RH-VS steam humidication system:
Accessories Description
Reductions
Reductions with lip seals for connecting the steam distribution housing
to the supply air line.
Available reductions:
– DN160 to DN125
– DN160 to DN150
Ceiling bracket RH Ceiling bracket for the hanging installation of the Condair RH above the
ventilation unit.
Air ow monitor Air ow monitor for duct installation for monitoring the air ow in the extract
air duct (see also humidity control variants in Section 4.4).
External molded steam hose
For connecting the steam outlet of the steam humidier with the steam
connection of the steam distribution unit when installing the steam humidi-
er between the ventilation pipes of the ventilation unit.
Steam hose DS22 For connecting the steam outlet of the steam humidier with the steam
connection of the steam distribution unit.
Insulation hose
EcoTherm
For the insulation of the steam hose.
Condensate hose KS10 For draining the condensate from the steam distribution unit.
Slotted fabric hose For the insulation of the condensate hose.
Filter valve Z261 Filter valve for installation in the water supply line.
Note: Additional installation accessories are to be provided by the customer.

13Product overview
4.4 Humidity control variants
The Condair RH-VS steam humidication system is intended for use in a residential heat recovery ven-
tilation system (HRV) with a central ventilation unit.
The following conditions are generally present in a conventional HRV:
– High proportion of outside air, usually 100%
– Occasionally low supply air temperatures <20°C
– Variable air volume ow
Various control systems can be used for controlling humidity. Two possible humidity control systems
(see Section 4.4.1 and Section 4.4.2) that can be implemented with the Condair RH steam humidier
are considered below.

14 Product overview
4.4.1 System1:Roomhumiditycontrolviaextractairhumidity
Fig. 3: Schematic diagram of System 1: Room humidity control via extract air humidity
A1
B1
Condair VS
Condair RH
B2
Y
Y
Y
Ventilation unit
HRV

15Product overview
For controlling humidity in the room or extract air (System 1):
– The humidity sensor "A1" is installed in the extract air duct.
– The maximum humidistat "B1" is installed in the housing of the steam distribution unit (position
specied).
– The optional air ow monitor " B2" is installed in the supply air duct immediately after the steam
distribution unit.
For this humidity control system, the PI continuous controller integrated in the Condair RH steam humidi-
er or an external PI continuous controller is required.
Recommendedsettingsforthemaximumhumidistatandthehumiditysensor:
– Maximum humidistat "B1": 75 %rh
– Humidity sensor "A1": recommended 45 %rh (min. 40 %rF to max. 50 %rF)
Important: The humidity control system 1 may be used only if a pre-heater is installed in the outside
air line as anti-icing protection for the heat exchanger. If the HRV has another anti-icing system or no
anti-icing protection, e.g. HRV with enthalpy exchanger, only the humidity control system 2 (see Section
4.4.2) may be used.

16 Product overview
4.4.2 Room humidity control with continuous limitation of the supply air humidity
Fig. 4: Schematic diagram of System 2: Room humidity control with continuous limitation of the sup-
ply air humidity
A1
B1
Condair VS
Condair RH
B2
Y1
Y2
Y1
Y2
Y1
Y2
A2
Ventilation unit
HRV

17Product overview
For room humidity regulation with continuous limitation of the supply air humidity (System 2):
– The humidity sensor "A1" (signal Y1) is installed in the extract air duct.
– The humidity sensor "A2" (signal Y2) for the continuous limitation of supply air humidity is installed
after the steam distribution unit in the supply air duct.
– The optional air ow monitor " B2" is installed in the supply air duct immediately after the steam
distribution unit.
If the supply air humidity exceeds the specied value, continuous limitation (signal Y2) has priority over
room humidity control (signal Y1).
This humidity control system requires either the PI continuous controller integrated in the Condair RH
or an external PI continuous controller with two signal inputs.
Recommendedsettingsforthemaximumhumidistatandthehumiditysensors:
– Maximum humidistat "B1": 75 %rh
– Humidity sensor "A1": recommended 45 %rh (min. 40 %rF to max. 50 %rF)
– Humidity sensor "A2": Lower limit: 60%, Upper limit: 80%

18 Installation
5 Installation
5.1 Safety instructions for mounting and installation work
Personnelqualications
All assembly and installation work may be performed only by suitablytrained,adequatelyqualied
personnel who are authorised by the operator. It is the responsibility of the operator to check the
qualication.
General notes
All information in this installation and operation manual for the placement and installation of the Condair
RH-VS steam humidication system must be observed and adhered to.
All information in the Condair RH installation and operation manual for the placement and installation of
the steam humidier must be observed and adhered to.
All local regulations for the installation of the water, steam and electrical systems must be observed and
adhered to.
Safety
To connect the sensors in the Condair RH steam humidier, observe and follow the instructions and
safety notes in the Condair RH installation and operation manual.

19Installation
5.2 Requirements for the installation room
The Condair RH-VS steam humidication system is designed for installation in sheltered indoor environ-
ments. Please observe the following notes regarding the requirements for the installation site:
– Where possible, the steam humidication system should be installed in a separate and lockable
technical room or a lockable niche with limited access for people.
– The installation room should have a oordrainor a lifting system (sewage pump) connected to
the wastewater line of the building.
– The installation room should be ventilated (if possible) and have the following temperature and
humidity values throughout the year:
Room temperature: +15°C to +30°C
Room humidity: 15 %rh to 75 %rh (non-condensing)
– Depending on the location of the steam humidier and the steam distribution unit, one or two open
drain funnels with trap must be available in the installation room, which is/are connected to the build-
ing's wastewater line.
– There must be enough space above the ventilation unit at the installation site so that the steam
distribution unit can be installed directly above ventilation unit into the supply air line.
– The steam humidier must be installed in the room in such a way that the maximum permissible
length of the steam hose of 4 m between the steam distribution unit and the steam humidier is not
exceeded, that the minimum hose bending radius of 250 mm is observed and that the steam line has
a constant up- or downslope between the connection on the steam humidier and the connection
on the steam distribution unit (see information on steam hose routing in Section 5.6).
Note: In order that the steam humidier can be mounted to the ceiling between the pipes of the ven-
tilation unit with the ceiling bracket (available as an accessory), there must be a minimum distance
of 300 mm between the ventilation pipes.
– Make sure that the construction (wall, ceiling, etc.) to which the steam humidier is to be mounted,
offers a sufcientload-bearingcapacity, and is suitable for the installation
– The steam distribution unit and the steam humidier should be installed in the room in such a way
that they are easily accessible and there is enough space for maintenance.

20 Installation
5.3 Requirements for the ventilation system (HRV)
The ventilation system must meet the following requirements:
– The steam distribution unit is designed to be installed in an existing or newly designed residential
heat recovery ventilation system (HRV). The Condair RH-VS steam humidication system cannot
be operated without a HRV. The steam distribution unit is installed directly above the ventilation unit
in the supply air line of the HRV.
– Ensure that the temperature of the supply air is always >15°C. If too much cold air ows through the
steam distribution unit, short-term condensation in the steam distribution housing or in downstream
piping or ventilation elements may occur. If the HRV is equipped with automatic, temperature-controlled
anti-icing protection for a dry heat exchanger with a preheating register in the outside air line and if
is activated, there is no risk of condensation.
– The steam distribution unit is designed for operation with a maximum air ow of up to 350 m3/h. The
maximum air ow must not be exceeded by the ventilation system.
– In order to ensure hygienic operation of the steam distribution unit, the supply air lter (and, if a
bypass is present, the extract air lter) of the HRV must be at least lter class ISO Coarse 65% (G4)
(recommended ISO ePM1 60% (F7)). It is the customer's responsibility to guarantee the lter quality.
5.4 Placementandinstallationofthesteamhumidier
The mounting of the steam humidier is not part of these installation and operating manual. For details,
please refer to the installation and operating manual of the Condair RH steam humidier.