Neptronic SKE90 User manual

Electric Steam Humidifier
SKE90/100/110/120 Series
SKE-XL BACnet
INSTALLATION INSTRUCTIONS
Read and save these instructions
SKE-XL-BACnet-IOM Rev.: 180206

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
1
Safety
ELECTRICITY
All work concerned with electrical installation MUST only be performed by skilled and
qualified technical personnel (e.g. electrician or technician with appropriate training).
The customer is always responsible for ensuring the suitability of the technical
personnel.
Please observe the local regulations concerning the provision of electrical
installations.
HEALTH &
SAFETY
Neptronic®has considered aspects of the design of their humidification systems to
reduce as far as possible the risk of Legionnaires’ disease and other similar
conditions but it is important that users are also aware of their responsibilities.
To prevent the growth of Legionella, users are required to:
Avoid water temperature that favors the growth of Legionella 20-45˚C.
Avoid water stagnation.
Clean and disinfect the humidification system.
Have a competent person carry out a risk assessment of the water system
supplying the humidifier to ensure the water supply is of an acceptable
quality
CORRECT USE
Neptronic®systems and products are designed only for humidification use.
Any other application is not considered use for the intended purpose. The
manufacturer cannot be made liable for any damage resulting from incorrect use.
ACCESS
NEVER LEAVE SKE-XL CABINET KEYS IN THE DOORS AS UNAUTHORIZED
ACCESS TO LIVE ELECTRICAL PARTS MAY BE GAINED –ALWAYS STORE
KEYS CENTRALLY WITH NOMINATED RESPONSIBLE PERSON.
WATER
Neptronic®systems are designed to be used with mains, reverse osmosis,
demineralized or partially softened water. On no account attempt to introduce any
other fluid or chemical into the system without first consulting Neptronic®or its
authorized distributor.
Water supply must not exceed the max pressure of 480 kPa, or pressure limits laid
out in the Specification and Installation Instructions, and must comply with local
regulations.

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
2
Foreword
Neptronic
Company
Overview
Founded in 1976, we’re a private corporation that designs, manufactures and
distributes products for the HVAC industry. Our product line includes intelligent
controllers, electronic actuators, actuated valves, humidifiers and electric heaters.
Our products are designed and manufactured by over 250 dedicated employees in
our 7,500 m2(80,000 ft2) state-of-the-art facility located in Montreal, Canada. Using a
vertical integration model, our entire manufacturing chain is under one roof from
software and hardware development, to SMT circuit board assembly, to sheet metal
fabrication, to product testing ensuring that our products are engineered to last.
We currently hold several national and international patents and with our continued
commitment to research and development, we provide innovative products and
technologies for the ever-evolving challenges of the HVAC industry. Exporting over
70% of our sales, we have an exclusive distribution network around the globe that
provides comprehensive solutions to our worldwide customers.
About the Manual
These installation and operation instructions have been developed to facilitate the
installation of the SKE-XL Steam Humidifier.
The strict application of these instructions will ensure the conformity of your
installation and operation as per the manufacturer's recommendations.
The application of these instructions is one of the conditions for the application of the
warranty.
The application of these instructions does not ensure, at any time conformity to
procedures, regulation or local codes, regarding electric installation and connection
to local water supply.
This product has been declared to conform to applicable European safety and
electromagnetic compatibility standards and directives and bear the CE mark. The
certificate of conformity CE is available upon request to the manufacturer.
2018©: All rights reserved. This document cannot be reproduced totally or partially
by any means whether, electronic, mechanical, photocopy, recording or other,
without prior written authorization of Neptronic.
Electricity
All work concerned with electrical installation MUST only be performed by
skilled and qualified technical personnel such as an electrician or a
technician with appropriate training). The customer is always responsible
for ensuring the suitability of the technical personnel.
Please observe the local regulations concerning the provision of electrical
installations.
Correct Use
Neptronic systems and its products are designed only for humidification use. Any
other application is not considered appropriate for the intended purpose. The
manufacturer cannot be made liable for any damage resulting from incorrect use.
General Warranty
This product is subject to the terms and conditions described at
http://www.neptronic.com/Sales-Conditions.aspx.

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
3
Table of Content
Safety................................................................................................................................................. 1
Foreword ........................................................................................................................................... 2
Table of Content................................................................................................................................ 3
Technical Specifications .................................................................................................................. 4
Dimensions & Weights ..................................................................................................................... 5
Handling & Unpacking...................................................................................................................... 7
Installation Overview ........................................................................................................................ 8
Stage 1 –Unit Positioning and Mounting........................................................................................ 9
Stage 2 –Steam Distribution Installation...................................................................................... 10
Stage 3 –Water Supply Installation............................................................................................... 13
Stage 4 –Water Drain Connection................................................................................................. 14
Stage 5 –Electrical Supply and Installation.................................................................................. 15
Stage 6 –Electrical Control Connections ..................................................................................... 16
BACnet Interface Set-up................................................................................................................. 20
Initial Verification & Start-up.......................................................................................................... 21
Commissioning –Operation Description...................................................................................... 22
Operation Display........................................................................................................................... 23
List of Alarms.................................................................................................................................. 23
Programming Mode ........................................................................................................................ 25
User Adjustment & Diagnostic Menu............................................................................................. 26
Wiring Diagram ............................................................................................................................... 27
Exploded View................................................................................................................................. 28
Bill of Material ................................................................................................................................. 29

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
4
Technical Specifications
3D opened view
(Illus.1)
Model
Steam cap.
[kg/h]
Power
(kW)
Current (A)
Nb of
outlets
Multi-Steam
header diam.
[mm]
400V / 3ph
SKE90
90
66
96
1
Ø76 mm
SKE100
100
74
107
1
Ø76 mm
SKE110
110
82
119
2
Ø76 mm
SKE120
120
90
130
2
Ø76 mm
Notes: Maximum static duct pressure is 1.25 kPa. For higher static duct pressures please consult Neptronic® or its
authorized distributor.

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
5
Dimensions & Weights
Front view
(Illus. 2a)
Back view
(Illus. 2b)
General Dimension & Weight
Model
Dimensions in mm
Weight in kg
A
B
C
Empty
Full of
water
SKE90
SKE100
SKE110
SKE120
1221
838
635
145
200
Water Inlet, Steam and Main Drain Outlets Dimensions
Model
No of
Steam
Outlets
Dimensions in mm
Steam
Outlet
Diam.
D
E
Drain
Outlet
Diam
Water
Inlet
Diam
F
G
SKE90
SKE100
1
Ø76
462
n/a
Ø20
Ø15
383
190
SKE110
SKE120
2
Ø76
462
230
Ø20
Ø15
383
190
Note: Drain outlet and water supply inlet are located on the right hand side of the humidifier. Left hand side location of any of
is available upon request.
Electrical Inlets and Pan Drain Outlet Dimensions
Model
Dimensions in mm
Electrical
KO Diam.
H
I
J
Pan Drain
Outlet Diam.
K
L
SKE90
SKE100
SKE110
SKE120
Ø22 & 35
670
569
55
Ø15
488
25
A
B
CD
E
F
G
K
L
HI
J
Power
supply inlet
Electrical
controls
inlet

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
6
Dimensions & Weights
Option: Weather Proof Enclosure General Dimensions And Weights
Front view Back view
(Fig. 3)
General Dimension & Weight
Model
Dimensions in mm
Weight in kg
A
B
C
Empty
Full of
water
SKE90
SKE100
SKE110
SKE120
1417
965
727
184
240
Water Inlet, Steam and Main Drain Outlets Dimensions
Model
No of
Steam
Outlets
Dimensions in mm
Steam
Outlet
Diam.
D
E
Drain
Outlet
Diam
Water
Inlet
Diam
F
G
SKE90
SKE100
1
Ø76
109
1291
20
Ø15
NPT
383
190
SKE110
SKE120
1
Ø100
109
1291
20
Ø15
NPT
383
190
Note: Steam outlet, drain outlet and water supply inlet are located on the right hand side of the humidifier
Left hand side location of any of is available upon request.
Electrical Inlets and Pan Drain Outlet Dimensions
Model
Dimensions in mm
Electrical
KO Diam.
H
I
J
SKE90
SKE100
SKE110
SKE120
Ø22 & 35
560
483
78
G
A
B
C
D
E
F
HI
J
Power
supply
inlet
Electrical
controls
inlet

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
7
Handling & Unpacking
Lifting or handling MUST only be carried out by trained and qualified personnel. Ensure
that the lifting operation has been properly planned, risk assessed and that all
equipment has been checked by a skilled and competent Health & Safety
representative and effective control measures put in place.
It is the customer’s responsibility to ensure that operators are trained in handling heavy
goods and to enforce the relevant lifting regulations.
Refer to Dimensions & Weight section for system dry weights.
Handling and
Lifting
The SKE-XL Steam Humidifier MUST always be handled and lifted with care and must
remain in its original packaging for as long as possible prior to installation
The SKE-XL Steam Humidifier package may be carried using a forklift from the
underside. Caution must be exercised to ensure balanced load before lifting.
Lifting sling angle must be greater than 30˚to the horizontal.
Unpacking
SKE-XL Steam Humidifier is shipped on a wooden crate.
Remove packing wooden crate and skids prior to installation.
List Of
Accessories
Supplied
Standard enclosure
2 sets of keys.
2 adjustable steam hose collars per steam outlet.
The present Installation Instructions and User Manual.
Wiring diagram affixed onto the interior of the electrical compartment door.
!

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
8
Installation Overview
All installation work must comply with local regulations.
All work related to the installation of the SKE-XL Steam Humidifier MUST only
be performed by skilled and qualified technical personnel (e.g. qualified gas
installer, fitters, electricians, plumbers or technicians with appropriate
training).
The customer is responsible for ensuring their suitability.
To install the SKE-XL Steam Humidifier and its associated components, no
special tooling is required above that of a fitter’s toolkit.
Installation Method
Statement
Stage1: Unit Positioning and Mounting
Stage 2: Steam Distribution Installation
Stage 3: Water Supply Installation
Stage 4: Water Drain Connection
Stage 5: Electrical Supply and Installation
Stage 6: Electrical Control Connections
(Illus. 4)
!
Stage 5
Stage 2
Stage 1 Water
supply
Stage 4
Stage 3
Stage 6
SKE-XL

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
9
Stage 1 – Unit Positioning and Mounting
General
Considerations
Any installation work MUST be carried out by suitably qualified personnel.
The following considerations must be taken into account before deciding on the
location for the SKE-XL Steam Humidifier:
Plan a location easy to access in order to permit an easy inspection and
servicing of the humidifier.
Do not install humidifier where failure of the appliance could cause damage
to the building structure or to costly equipment.
Location area must be well ventilated, ambient temperature must not exceed
30˚C.
Positioning the
Humidifier
The humidifier must be installed to ensure the steam hose length is kept to the
shortest possible length.
For flexible steam hose: the total steam line length must not exceed 5
meters. For longer distances use insulated hard piping.
For insulated hard piping: the total steam line length must not exceed 15
meters. For longer steam line runs, consult factory.
Observe the minimum access distances as shown in Illustration 5.
(Illus. 5) Standard enclosure
Minimum
Clearances
Minimum clearances are :
Top: 510mm minimum
Electrical panel side: 600mm minimum
Front: 800mm minimum
The humidifier is designed to be installed directly on the floor.
Provide a level, solid foundation for the humidifier.
Ensure that the floor beneath the humidifier is water proof to withstand any water
spillage during servicing or if a problem occurs.
The humidifier is provided with adjustable legs in order to ensure proper level.
!
510 mm
minimum
800mm
minimum
600mm
minimum

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
10
Stage 2 – Steam Distribution Installation
Fundamental Design
Concepts
1. Maximum steam velocity in a pipe must not exceed 12m/s velocity.
Velocities above this will generate noise.
2. Minimum steam pipe gradient must be 125mm rise in 1m run.
3. The lowest point of any steam hose or rigid pipe must be the humidifier.
A steam separator (S trap) must be installed higher than the static
pressure of the system by at least 50mm.
4. Total length of the flexible steam hose must not exceed 5 m or insulated
rigid piping must not exceed 15 m.
5. Whenever possible use rigid copper piping, flexible steam hose can be
used for short runs or for interconnecting between rigid pipe runs, ensure
that there is no kink in the flexible hose.
When using rigid copper pipe, insulation must be used to diminish
condensation build up.
(Illus. 6)
(Illus. 7)
(Illus. 8)
6. Connection pipe sizes between SKE-XL and steam distributor in the duct
must be 108mm up to 240kg/h
7. All Humidifiers above 100kg/h capacity must use Multi-Steam.
!
Min. 7°
Correct Installation
SKE-XL humidifier
with Multisteam.
Static pressure
+ 50 mm
Min. 7°
Correct Installation
SKE-XL humidifier with 2 SAMB E2 manifolds
Static pressure
+ 50 mm
Incorrect Installation

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
11
Stage 2 –Steam Distribution Installation
Selection of
Multi-Steam
1. For all Multi-Steam units use the Neptronic®Humidisoft program to size the unit.
2. Where two Multi-Steam units are required, duties in excess of 240kg/h make
your selection using the following rules:
Divide the air volume flow in half.
Divide the AHU / air Duct width in half.
Height of the duct must remain at 100% its height.
This will size Multi-Steam units so that they can be placed side by side.
3. For installation of Multi-Steam units please refer to Neptronic®Multi-Steam
Installation Instructions
Horizontal duct (Illus. 9)
Vertical duct (Illus. 10)
Ø15 mm Static pressure
+ 50 mm
Min. 50 mm
Min 50 mm
Min. 50 mm
Mounting bracket must be level horizontally
Steam supply hose or
rigid pipe to Humidifier
Header must be pitched toward condensate drain
Condensate drain pipe to steam trap
Air duct
Rod, bolt, nut and
washer assembly
Static pressure
+ 50 mm
Min. 10º
Steam supply hose or
rigid pipe to Humidifier
Header must be pitched toward condensate drain
Air duct Rod, bolt, nut and
washer assembly
Air flow
Air flow

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
12
Stage 2 –Steam Distribution Installation
Steam Pipe Work To Duct Connections
SKE90&100
(llus. 11)
A single Ø76mm feed pipe must be connected to a single Multi-Steam with a suitable
reduction at the lowest point to allow a Ø15mm condensate drain from the main steam
supply.
SKE110&120
(Illus. 12)
Two Ø76mm steam outlets to a single Ø130mm feed pipe must be connected to a single
Multi-Steam with a suitable reduction at the lowest point to allow a Ø15mm condensate
drain from the main steam supply.
Min. 7° pipe slope Insulated pipe
H
Air
Duct
Static pressure
Min. 2/5 H
Ø76 mm
Ø15 mm
Min 100 mm
+ 50 mm
min7°pipeslope
Ø76mm
Ø130 mm
Ø15 mm
Min. 7° pipe
slope
Static pressure
+ 50 mm
Insulated
pipe
Air
Duct
Ø76mm

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
13
Stage 3 – Water Supply Installation
Water supply installation must conform to local codes and regulations.
Any installation work must be carried out by suitably qualified personnel.
Water Inlet
Specifications
Neptronic®SKE-XL Humidifier is designed to be used with mains, reverse osmosis,
de-ionized and de-mineralized water.
Maximum water supply pressure: 70 to 480kPa
Minimum water temperature: +4˚C
Maximum water temperature: +40˚C
Model
Water inlet
Connection size
SKE90
SKE100
SKE110
SKE120
Ø 15 mm
Water Supply
Line Installation
To facilitate servicing, it is recommended to install a shut off valve (not supplied) in
the water line, within 1m of the humidifier.
It is recommended to install a water hammer arrestor, in order to absorb hydraulic
shock and minimize water hammer when the fill valve closes.
(Illus. 13)
!
SKE-XL
Water Inlet connection
¼ turn Shut off Valve
120 mm
Flexible Hose
Feed Water supply line
Gasket Gasket

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
14
Stage 4 – Water Drain Connection
Water Drain installation must conform to local codes and regulations.
Any installation work must be carried out by suitably qualified personnel.
Water Drain
Specification
Water Drain temperature: 60˚C
Model
Water Drain Outlet
Connection size
Pan Drain Outlet
Connection size
SKE90
SKE100
SKE110
SKE120
Ø 20mm
Ø 15mm
Water Drain
Installation
Water drain outlet connection must be connected to drain pipe of sufficient size.
We recommend the use of Ø 20mm minimum standard copper hydraulic pipes.
Minimum water drain pipe gradient must be 6.5mm per 300mm horizontal run.
No drain trap is required.
(Illus. 14)
Weather Proof
Enclosure
Water Drain Valve
The weather proof enclosure is equipped with a normally open valve, enabling the
humidifier to drain all water during a power failure, in order to prevent water from
freezing within the unit. During normal operation, the humidifier reduces drain water
temperature to +60°C.
CAUTION: During a power failure, the drain water temperature is not reduced.
Installed drain piping must be rated to +100°C.
!
SKE-XL
120mm
Ø 38mm
minimum
Ø 20mm

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
15
Stage 5 –Electrical Supply and Installation
Electrical Power
Supply
The SKE-XL Steam Humidifier requires 400V three phase supply.
Model
Current (A)
SKE90
96
SKE100
107
SKE110
119
SKE120
130
All incoming power supplies MUST be externally fused for over current protection.
The electrical supply must also be isolated for the purpose of emergency and
servicing. A disconnect switch must typically be installed within one meter of the
humidifier.
The isolator must have a contact separation of at least 3mm.
Electrical
Connection
All work related to electrical installation MUST only be performed by skilled and
qualified technical personnel (e.g. electrician or technicians with appropriate
training).
Please observe local codes and regulations concerning the provision of electrical
installations.
WARNING. Risk of electric Shock. Ensure that the electrical supply is
isolated before beginning any installation.
WARNING: RISK OF FIRE. Do not interchanges the power terminal block
designated L1, L2 and L3 with Low voltage terminal block designated 1, 2 and 3.
The installation engineer must ensure the following:
Use of copper power conductor only.
Size of the power conductors are suitable for the maximum current supplied.
Incoming power cable is secured via suitably sized cable gland.
Each terminal connection is secured firmly with a cable ferrule.
The ground conductor must be equipped with ring terminal and must be
connected directly to the electrical panel on the indicated location.
Humidifier cabinet has an uninterrupted or unbroken electrical ground.
(Illus. 15)
!
L1
L3
L2
Electrical panel SKE-XL

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
16
Stage 6 – Electrical Control Connections
Humidifier
Control with
Humidity
Controller
Neptronic® SKE-XL modulating Steam Humidifier can be installed in conjunction
with Neptronic® HRO humidity controller.
(Illus. 16)
Note: If interlock is not used, a jumper must be installed between terminals F & 5.
Control Signal
The selection of the control signal is made through the menu.
Wire the control input to terminal 3 and 4 as indicated on the diagram below.
(Illus. 17)
1
875
432F
6 9
PD switch
High Limit
24 VAC
Interlock *
COM
NO
NC Alarm
Contact
24VAC %RH MOD COM
HRO20
1 2 14 16
F
5
4321
986 7 +
-
0-10
Vdc 2-10 Vdc
0-20
mA 2-20 mA
or
or
or

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
17
Stage 6 –Electrical Control Connections
Humidifier
Control with
Humidity Sensors
Neptronic® SKE-XL Steam Humidifier can be installed in conjunction with
Neptronic® SHR10 or SHC80 humidity sensors.
(Illus. 18)
1
875
432F
6 9
PD switch
High Limit
24 VAC
Interlock *
COM
NO
NC Alarm
Contact
24VAC %RH COM
1 2 3
SHR10 or SHC80

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
18
Stage 6 –Electrical Control Connections
VAV System
Neptronic® SKE-XL modulating Steam Humidifier can be installed in conjunction
with a VAV system, in this case Neptronic® SHC80 Duct humidity sensor will act as
a High level duct humidity sensor. Humidity will be controlled by Neptronic® SHR10
or SHC80 room or duct humidity controller.
(Illus. 19)
Dry Contacts
2 volt free contacts are provided :
Operation (fan) contacts:
One normally connected to common and one normally open contact
These contacts are used to switch a low voltage control, up to 24Vac or Vdc, with a
switching current of no more than 3 A.
(Illus. 20)
1
875
432F
6 9
PD switch
High Limit
24 VAC
Interlock *
COM
NO
NC Alarm
Contact
24VAC %RH COM
1 2 3
SHC80
(high limit)
24VAC %RH COM
1 2 3
SHR10 or SHC80
1
875
432F
6 9
Common
Normally Open
Normally Closed

SKE-XL BACnet Steam Humidifier
Installation Instructions and User Manual
19
Stage 6 –Electrical Control Connections
Controls
placement
A typical humidifier control system includes the following along with the humidifier:
A wall or return duct humidistat
A high limit duct humidistat,
An airflow switch.
Placement of these devices is critical to proper operation of the overall system.
The return duct humidistat must always be located before any outside air intake,
in order to ensure accurate sensing of the air from the humidified space.
Alternatively a room humidistat can be used. The room humidistat must be
located on an inside wall or column. It must not be near any discharge air from
supply ducts or sources of heat or cold.
The airflow switch must be positioned to accurately open on a loss of air flow, to
prevent the humidifier from running when there is no air to absorb humidity.
The high limit humidistat must be positioned far enough - minimum 4.6m -
downstream of the steam dispersion manifold(s) to prevent it from getting wet,
but still allows it to accurately prevent over humidification of the duct that could
result in condensation.
(Illus. 21)
Return SHC80
Humidity sensor
air air
airair
Or room HRO20
humidistat
SHH8 High limit humidistat
High limit SHC80 for
VAV application only
4.6m min
Air flow switch Steam dispersion
manifold