Devatec ELECTROVAP RTH-LC Series User manual

Pictures for illustraƟve purposes only
User’s manual
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ELECTROVAP RTH-LC
Contents
Safety information 4-5
Product accreditation 6
Delivery contents 7
Dimensions & Weights 8
Humidifier component parts 9
Installation
Installation steps 10
Step 1 - Wall mounting & installation 11-13
Step 2 - Water connection 14
Step 3 - Steam pipe positioning 15-21
Step 4 - Condensate draining 22-23
Step 5 - Electrical connections 24-37
Step 6 - Control connections 38
Setting up 39
Software assistant
User information menu 40-42
Humidifier status menu 43
Changing parameters menu 44-46
Maintenance
Fault & alert messages 47-50
Maintenance messages 51
Steam tank maintenance 52-53
Valves maintenance 54-55
Split views & component parts 56-60

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I
MPORTANT
Please read, heed and follow the enclosed safety information and the warning labels
inside the humidifier before installation or maintenance.
Warnings & safety symbols
Warning : This symbol is used to designate a danger of injury or potential damage to the
system. Check all electrical terminal screws at commissioning, after 50 hours operation
and at every service thereafter.
Caution : High voltages are present inside the humidifier. All works concerned with the
electrical installation must be carried out by skilled and qualified personnel.
Caution : Danger of scalding ! The ElectroVap RTH-LC generates steam during operation
and therefore surfaces and pipe-work become very hot. Ensure that equipment not sustaining
high temperatures be kept away.
Take care : the RTH-LC electronic components are very sensitive to electrostatic shocks. Ap-
propriate steps must be taken before any operation.
Warning : the end user should ensure that the equipment be disposed of according to the
local prevailing regulations.
Delivery and storage
Any loss or damage during delivery should be reported to carrier by registered letter within 3 working
days and be advised to devatec or to authorized dealer.
It is recommended that the ElectroVap RTH-LC humidifier be kept in its transit packaging for as long as
possible prior to maintenance. If the humidifier is to be put into storage prior to installation, it must be
stored under cover and protected from physical damage, dust, frost, rain and humidity. More than 6
months storage is not recommended.
ELECTROVAP RTH-LC
Safety information

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IMPORTANT
This section should be read carefully to ensure safe and correct installation of your humidifier.
GENERAL
This manual contains all details necessary for the planning and installation of the ElectroVap RTH-LC humidifier.
In addition commissioning and maintenance details are included.
The manual is intended for use by engineers and properly trained technical personnel. Maintenance, servicing or
repair work must only be carried out by suitable skilled and qualified personnel, the customer must be responsible
for ensuring their suitability.
Any risks or hazards, especially when working from ladders or towers should be identified by a skilled and Health
and Safety representative and effective control measure put in place.
No liability will attach to the Distributor if any damage, injury or accident is attributable to inattentive, inappropriate,
negligent or incorrect operation of the machinery whether or not caused deliberately. Always isolate all electrical
and water supplies before commencing any maintenance.
Every effort has been made to ensure details contained in this manual are correct, however, in view of the wide
range of conditions experienced in air handling systems, the information provided should only be used as a guide.
Please contact your Agent if any doubt.
Correct use
ElectroVap RTH-LC humidifiers are ONLY intended for use with air handling systems or direct air humidification.
ANY OTHER APPLICATION IS NOT CONSIDERED USE FOR THE INTENDED PURPOSE. THE MANUFAC-
TURER CANNOT BE MADE LIABLE FOR ANY DAMAGE RESULTING FROM INCORRECT USE.
Water
ElectroVap RTH humidifiers are designed to be used with mains, demineralized R/O with a minimum conductivity
of 30 µs or softened water. On no account attempt to introduce any other fluid or chemical into the system. Water
supply should not exceed 6.0 bar and installation should comply with local regulations. If the water pressure ex-
ceeds 6.0 bar, a water regulator valve must be used.
Electricity
All work concerned with electrical installation MUST only be performed by skilled and qualified technical person-
nel (eg electrician or technicians with appropriate training). The customer MUST be responsible for ensuring their
suitability. It is the duty of the installer to ensure that suitable sized cables and MCB protection is provided.
Please observe the local regulations concerning the provision of electrical installations.
Warranty
A one year warranty term - cost and labor - is applicable to the parts of the ElectroVap RTH-LC to the exception
of the usual consumable parts provided our recommendations of use & maintenance have been adhered to. Fai-
lure to specify and fit original parts and accessories will invalidate our warranty.
N OTE
The manufacturer’s policy is one of continuous research and development. He therefore reserves the right to
amend without notice the specifications given in this document.
ELECTROVAP RTH-LC
Safety information

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ELECTROVAP RTH-LC
Product accreditation
D IRECTIVES APPLIED
Electromagnetic Compatibility Directive : 89/336/EEC, 2014/30/UE
Low Voltage Directive : 73/23/EEC, 2014/35/UE
« Machinery » Directive: 98/37/EC, 2006/42/CE
The humidifier complies with :
EN 61000-6-3: Electromagnetic compatibility generic requirements (residential, commercial
and light industries)
- EN 55022 class B; conducted and radiated emission limits
EN 61000-6-2: Electromagnetic compatibility (EMC) - Generic standards—Immunity for in-
dustrial environments;
- EN 61000-4-3: Radiated, radio frequency, electromagnetic field immunity test
- EN 61000-4-6: Immunity to conducted distrubances induced by radio frenquen-
cy fields
- EN 61000-4-4: Electrical fast transient/burnt immunity test
- EN 61000-4-5: Surge immunity test
- EN 61000-4-2: Electrostatic discharge immunity test.
EN 60335-1: Low voltage : safety of electrodomestical devices and similar
EN 60335-2-88: Low voltage : safety of electrodomestical devices and similar, concerning
humidifiers
EN 60204-1: Safety of machinery—Electrical Equipment of machines—Part 1 : General
requirements
Manufacturer’s name & address
devatec SAS
87 Rue Feu Saint Eloi
76550 Ambrumesnil - FRANCE
Type of equipment Steam humidifier
Model name & series ELECTROVAP RTH-LC
Year of manufacturing 2007
We the undersigned, hereby declare that the equipment specified above complies
with the above-mentioned Directive(s) and Standard(s).
Name : FRAMBOT Jean-François
Position : General Manager
Date : 01.06.2016
Signature:

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ELECTROVAP RTH-LC
RoHS declaration
devatec sas
Rue Feu St Eloi
76550 Ambrumesnil
France
Confirms that the ElectroVap RTH steam humidifier is manufactured in compliance with
the European regulations 2002/95/EU (RoHS).
This guideline regulates after July 1st 2006 the use of mercury, cadmium, lead (soldering
processes), chrome VI as well as PBB and PBDE.
Name : MINFRAY Jean-Marie
Position : R&D Engineer
Date : 05.06.2008
Signature:

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ELECTROVAP RTH-LC
Delivery content
Any loss or damage during delivery should be reported to carrier by
registered letter within 3 working days and be advised to devatec or to
authorized dealer.
It is recommended that the ElectroVap RTH-LC humidifier be kept in its
transit packaging for as long as possible prior to maintenance. If the
humidifier is to be put into storage prior to installation, it must be stored
under cover and protected from physical damage, dust, frost, rain and
What is in the box :
1. One steam humidifier with a stainless steel tank supplied with an on/off or pro-
portional control and a technical documentation.
2. One 500mm long flexible hose with 3/4” thread (with washers) for tap water
connection.
3. 1,50m long Ø40 mm drain hose
4. 3 hose clamps (2 for the steam hose and 1 for the drain hose)
1 3
2 4
OPTIONS
Remote information board
Filling cup plateform
400/230V transformer
(for installation without neutral)
Water draining cooling kit
External protective enclosure
(990 x 500 x 1470mm)
Ground holder
ACCESSORIES
Steam distribution pipe(s)
Steam and/or condensate hoses
Blower pack for room steam distribution
Humidity sensor for room or duct applica-
tions
Humdistat
ExpressPack manifold

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1
1
1
1
1
1
A
B
a
C
ELECTROVAP RTH-LC
Dimensions
RTH-LC 3 to 30
mm
A Width 550
B Height 680
C Depth 272
1 Steam outlet 140
a Draining outlet 140
kg
Weight empty 25
Weight in operation 35
Metal cabinet painted with RAL 7035 thermo-gloss

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ELECTROVAP RTH-LC
Humidifier component parts
1 Steam hose
2 Ø12x16mm water feed hose
3 Ø16x27mm tightening clamp
4 Filling cup
5 Ø18x22mm overflow hose
6 Water inlet valve
7 Display board
8 Main PCB board
9 Water level management board
10 Stand-by lamp
11 On/off switch
12 Power contactor
13 Grommet
14 Fan
15 Boiler
16 Heating element
17 Drain valve
18 Water level detector
19 Drain outlet
20 3/4" F ss threaded water inlet hose
RTH - LC 3 to 30

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ELECTROVAP RTH-LC
Installation steps
All works concerned with electrical and plumbing installation must be carried out by a skilled and
qualified personnel.
Please read, heed and follow the enclosed information for the installation of the humidifier and the
steam, water and electrical networks.
For further technical assistance, feel free to call devatec.
Failure to adhere to manufacturer’s installation recommendations will invalidate your
warranty.
Step 2
Step 3
Step4
Steps 5,6
Step 1
Step 4
Steps
Step 1 - Installation on wall
Step 2 - Water connection
Step 3 - How to install steam pipes
Step 4 - Water draining
Step 5 - Electrical connections
Step 6 - Control connection

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TAKE CARE :
The humidifier should be installed in a room the temperature of which must be
between 5°C and 40°C that the humidity level should not exceed 80 %.
The rear part of the RTH-LC becomes hot during operation (about 60°C). Make sure
that the surface on which the humidifier is installed can sustain hot temperatures.
The devatec steam humidifiers are designed to be installed on wall. Make sure that
the surface the humidifer is hanged on is strong enough.
Install the humidifier at the shortest distance of the steam pipe (s.a. page 13)
whenever possible for best performance.
Arrange position of the humidifier on wall to provide free access for easy maintenance
(see after installation drawings here under).
Remove the blocking ring from the stainless steel cylinder before use.
600 mm
600 mmmini
500 mmmini
1000 mmmini
1250 mm
ELECTROVAP RTH-LC
Installation - Step 1

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ELECTROVAP RTH-LC
Installation - Step 1
467
110
41
40
21 507
525
O
6
4x
NOTA BENE :
Use attachment equipment appropriate to the support.
DETAILA
R4
R6
10
20
Installation procedure :
Unpack your humidifier. Mark the 4 mounting holes and drill.
Insert pegs. Screw the upper screws (diam 6mm) allowing about 10 mm for
hanging the cabinet.
Hang the cabinet and screw the lower screws. Tighten up all the screws for
securing the installation while ensuring that the cabinet is level.
Attachment
point (detail)

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A fresh mains cold water service should be used to supply the unit. The wa-
ter pressure should be between 1 & 6 bars & should not exceed 40°C in
temperature. In case the water pressure exceeds 6 bar, a water regulator
valve must be used.
The water supply connection is under the bottom of the unit. The humidifier
is delivered with a water inlet hose of 50 cm long with a 3/4" female fitting to
the cold water supply. A direct copper connection is PROHIBITED.
A check valve should be located on the mains and cold water service
connection to the unit.
The inlet valve base has a basket filter (s.a. page 47).
The RTH-LC humidifier uses water to produce steam so leakage may
happen causing potential damage. If an installation in false ceiling or
above prime rooms (such as museum, exhibition or laboratory rooms)
is considered, ensure that the floor below the humidifier is constructed
from waterproof materials (with draining facilities) to withstand any
water spilling during servicing or if a problem occurs.
Information about the water quality : chloride concentration : < 75mg/l,
phosphate concentration : < 5mg/l, chlorine consentration (3 to 6° dA) : <
100mg/l, poor concentration inCO2, organic elements in poor concentration.
The RTH-LC humidifier can run with the following water qualities :
 Tap or raw water : water TH between 5° and 40° French grade.
 Demineralized water : 30µS/cm minimum (caution : the demine-
ralized water is corrosive; use appropriate piping material : stainless
steel, PVC)
 Demineralized water of less than 10µS/cm : for ensuring a correct
water level detection, a special floating water level detection device
must come in replacement of the standard water level system (s.a.
attached picture). This replacement is factory made when this is
specified on the purchase order (caution : the demineralized water is
corrosive; use appropriate piping material : stainless steel, PVC).
Please consult your local reseller.
Softnened waters (not recommanded)
A water softener does not affect the quantity of mineral salts contained in the water but alters their nature, the
polyphosphate measuring devices as well.
An excess of sodium chloride may generate foam which disturbs greatly the correct running of the humidifier. It
is essential that a duplex softener be used.
A small volume of tap water must be added to the softener water to get a TH value of 10° minimum
(however a TH value of 12° is highly recommended). Awater analysis should be made to determine the so-
dium chloride content.
Far from what is generally considered, the use of softened waters does not bring down the maintenance
frequency. Only the use of reverse osmosis or demineralized water can space maintenance periods signifi-
cantly.
TAKE CARE : the use of deminerilized water in combination with tap water is strictly prohibited.
Water supply service
Check valve
Water inlet hose with 3/4"
female union.
ELECTROVAP RTH-LC
Installation - Step 2
Floating water level
detection device

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The steam from the boiler enters
the duct or an air handling unit via a
steam distribution pipe.
In order to obtain the optimum per-
formance of the humidifier, select the
longest pipe.
ExpressPack
ExpressPack
Steam distribution pipe
Steam distribution pipe for RTH-LC 3 to 30 L
mm
D25 or D40 -L290 290
D25 or D40 -L590 590
D25 or D40 -L790 790
D25 or D40 -L1500 1500
D25 or D40 -L1250 1250
D25 or D40 -L1000 1000
Steam distribution selection table
Ø25mm
or
Ø40mm
Ø8mm
ExpressPack
L
The Armstrong ExpressPack
is a bespoke steam humidification
system made to suit your configuration
and ready to install in a ventilation duct.
It permits to have vapor trails
(absorbing distances) as short as 600
mm. For further reference, please
contact devatec or their authorized agent.
ELECTROVAP RTH-LC
Steam distribution

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Evaporation distance or vapor trail « D »
A certain length is required so that the steam coming out of the steam distribution pipe
be absorbed by the air. All along this length, descrided as the evaporation distance, the
steam can still be seen in the airflow as a mist which can condensate in water against any
obstacle if placed within. To prevent condensation, this evaporation distance should be
calculated before positioning the steam distribution pipe.
How to calculate the evaporation distance « D » (FAST METHOD)
In order to determine the evaporation distance, the attached calculation table can be used :
Nota bene : this calculation table is to be used for temperatures between 20°C and 25°C.
HR1 = relative humidity of air before humidification in %.
HR2 = relative humidity of air after humidification in %.
Minimal humidification distance
The steam distribution pipes must be positioned after the minimum humidification
distance calculated with the help of the above table.
% RH1 inlet air
5 10 20 30 40 50 60 70
% HR2 outlet air
40 0,9 0,8 0,7 0,5 - - - -
50 1,1 1 0,9 0,8 0,5 - - -
60 1,4 1,3 1,2 1 0,8 0,5 - -
70 1,8 1,7 1,5 1,4 1,2 1 0,7 -
80 2,3 2,2 2,1 1,9 1,7 1,5 1,2 0,8
90 3,5 3,4 3,2 2,9 2,7 2,4 2,1 1,7
Minimum humidification distance « D » in m.
Before / after fan before / after heater/filter
D D 1,5 x D 5cm
2,5 x D before thin particule filter
ELECTROVAP RTH-LC
Installation - Step 3

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A high humidity limit humidistat must be installed in the duct to stop the humidifier in case
the level of humidity exceeds the preset value.
In case the recommended distances cannot be met, please contact devatec or their
authorized agent for an alternative solution.
If accurate values cannot be reached, a distance of 2 m. should be considered as a
minimum distance between pipes & obstruction and 3 / 4 m. before sensor or
humidistat.
D
D
5 x D
0,5 x D
D
0,5 x D
Before a junction before an air opening before a humidity
Before / after a constriction before an expansion before a bend
ELECTROVAP RTH-LC
Installation - Step 3

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11
1
1
660H> mm
H3
H2
H1
H2
410H > mm
19,61
1
H3
H2
1
H1
11
1
H3
H2
H1
480H>mm
550H > mm
11
1
H1
H2
H2
1
H3
270H > mm
1
H3
8,
5
1
H1
Please meet the following dimensions and spaces according to your configuration. For
further information, please contact devatec or their authorized agent.
H1 = 110mm = Minimum height between the duct floor and the axle of the steam pipe.
H2 = 140mm = Minimum distance between two pipes.
H3 = 160mm = Minimum height between the duct top and the axle of the steam pipe.
The H3 distance can be 80 mm at the shortest in case the steam pipe is installed at an angle of
30°.
The arrow shows the direction of the air flow.
ELECTROVAP RTH-LC
Installation - Step 3

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30°
1
H3
1
D
1
5
°
In vertical ducts where the air flow is
upward or downward, the steam
distribution pipe(s) must be tilted by
15° sideways.
590
47,2
d/2
d
In duct with limited height, the distribution pipe(s)
can be tilted by 30° to get the 80 mm minimum
height.
D = Humidification distance
d = Duct diameter
ELECTROVAP RTH-LC
Installation - Step 3
Steam pipe positioning
ExpressPack installation in duct RTH –LC 3 to 30
Condensats
Drain
Air

19
How to attach the pipe (inside the duct)
O
5
The end of the steam pipe should be attached to the duct with a threaded rod of Ø 5 mm
going from the dedicated hole of the fixing plate to the outside of the duct and attached
by a couple of nuts (method 1). A rail attached to the inner side of the duct can also be
used - a 5mm bolt and nut are used to settle the pipe on the rail (method 2).
The steam pipe must be at level with the duct.
Threaded rod
Rail
Method 1 Method 2
ELECTROVAP RTH-LC
Installation - Step 3
For ensuring the best steam distribution possible, we would recommend to install the steam
pipes as per the two methods described underneath.
How to install in a duct
Your steam pipes must be screwed onto the ventilation duct by the fixing plate with a set of 4 bolts and
nuts of Ø 5 mm. For ensuring airtightness, apply a large silicon film all around the duct installation plate.
The length of the bolts will be according to the thickness of the ventilation duct.
Steam pipe Ø 25mm
84
8
36
90
100
140
8124
O
5
4X
38
112
d
O
5
4 X
100
140 124
84
8
8
3690
50
124
d
Steam pipe Ø 40mm

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1. Use preferably hose from our supply
NB : when brand new hoses are installed, a smell of burning may be smelt during the first running
of the steam humidifier. This is normal and will eventually dispel.
2. Number of steam outlet :
RTH-LC 3 to 15 = 1 x Ø 25 mm
RTH-LC 20 & 30 = 1 x Ø 40 mm
3. The RTH-LC humidifier can be used with pressure ducts (P) having the following characteristics :
If P is inferior to 150 mm CE (Water column) i.e. 1470 Pa.
If P is between 150 mm CE and 300 mm CE (2941 Pa.) , our optional filling cup plateform
must be used.
4. Please adhere to the recommendations given underneath for the installation of the steam hose
according to one of the shown examples, the most suited to your installation. A set of hose clamps is
supplied for ensuring a correct installation.
The humidifier should be located within 3 m. of the steam distribution pipe. If the distance is superior to
3 m. insulated stainless steel pipeof a slightly larger diameter must be used. It should not exceed 6 m.
TAKE CARE : The steam hose must be kept as tight as possible. If it happens to be pinched or kinked,
this can cause the heating elements to overheat and to be destroyed due to an incorrect detection of a
too low water level inside the cylinder.
Example a
Example b
ELECTROVAP RTH-LC
Installation - Step 3
500 mm min.
500 mm min.
Radius of bend for steam hose :
- Ø 25mm steam hose = 250mm minimal radius
- Ø 40mm steam hose = 400mm minimal radius