neptronic SKS4 Steam Steam Humidifier User Manual
- June 15, 2024
- neptronic
Table of Contents
- neptronic SKS4 Steam Steam Humidifier
- Specifications
- Product Usage Instructions
- Health & Safety
- Installation Instructions
- Correct Use
- Water Supply
- FAQ
- Steam to Steam Humidifier
- Neptronic Company Overview
- Handling and Lifting
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
neptronic SKS4 Steam Steam Humidifier
Specifications
-
Product: SKS4 Steam to Steam Humidifier
-
Model: SKS4-ESL-230302 (V2.03)
-
Installation Instructions and User Manual: 4011008
-
Designed for humidification use
-
Main water supply: Mains, reverse osmosis, de-mineralized or
partially softened water -
Maximum water pressure: 70 psig (480 kPa)
-
Manufacturer: Neptronic
-
Manufacturer Location: Montreal, Canada
Product Usage Instructions
Safety Precautions
When installing the steam supply, only skilled and qualified technical
personnel should perform the work. It is the customer’s responsibility to
ensure the suitability of the technical personnel. Local regulations regarding
steam installations should be observed.
All electrical installation work should be carried out by skilled and qualified technical personnel, such as an electrician or a technician with appropriate training. The customer is responsible for ensuring the suitability of the technical personnel. Local regulations regarding electrical installations should be observed.
Health & Safety
To prevent the growth of Legionella and similar conditions, users are required to:
- Follow correct use instructions
- Use the humidification system only for its intended purpose
- Ensure the SKS4 electrical panel access door is always closed to prevent accidental access to live electrical parts
- Use mains, reverse osmosis, de-mineralized or partially softened water as the water supply
- Do not introduce any other fluid or chemical into the system without consulting Neptronic or its authorized distributor
- Ensure the water supply does not exceed the maximum pressure of 70 psig (480 kPa) and complies with local regulations
Installation Instructions
Refer to the provided Installation Instructions and User Manual (4011008) for detailed installation steps and guidelines.
Correct Use
The SKS4 Steam to Steam Humidifier is designed specifically for humidification use. Any other application is not considered appropriate for the intended purpose. The manufacturer cannot be held liable for any damage resulting from incorrect use.
Access
It is important to never leave the SKS4 electrical panel access door open
to avoid accidental access to live electrical parts. Always ensure the access
door is closed securely.
Water Supply
The Neptronic systems are designed to be used with mains, reverse osmosis, de- mineralized, or partially softened water. Do not attempt to introduce any other fluid or chemical into the system without consulting Neptronic or its authorized distributor. The water supply must not exceed the maximum pressure of 70 psig (480 kPa) and must comply with local regulations.
FAQ
Q: Can I use this humidifier for purposes other than humidification?
A: No, the SKS4 Steam to Steam Humidifier is designed only for
humidification use. Using it for other purposes is not considered appropriate
and may result in damage.
Q: What type of water should I use with this humidifier?
A: The humidifier is designed to be used with mains, reverse osmosis, de-
mineralized, or partially softened water. Do not introduce any other fluid or
chemical without consulting Neptronic or its authorized distributor.
Q: What is the maximum water pressure allowed for this humidifier?
A: The maximum water pressure should not exceed 70 psig (480 kPa).
Steam to Steam Humidifier
SKS4 Series Installation Instructions and User Manual
4011008
READ AND SAVE THESE INSTRUCTIONS
SKS4-ESL-230302 (V2.03)
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Safety
Steam Supply
All work concerned with steam supply installation MUST only be performed by
skilled and qualified technical personnel. The customer is always responsible
for ensuring the suitability of the technical personnel. Please observe the
local regulations concerning the provision of steam installations.
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.
Health & Safety
Neptronic has considered the aspects of the design of their humidification
systems to reduce as much 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 favours the growth of Legionella (68 to 113°F
[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 that the water supply is of an acceptable
quality.
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.
Access
The SKS4 electrical panel access door MUST never be left open, in order to
avoid accidental access to live electrical parts.
Water
Neptronic systems are designed to be used with mains, reverse osmosis, de-
mineralized or partially softened water. On no account must a user 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
maximum pressure of 70 psig (480 kPa), or the pressure limits laid out in the
Installation Instructions and must comply with local regulations.
Page | – 1 –
Foreword
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
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 SKS4 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 conform to applicable Canadian, American and
European standards.
2021©: 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.
General Warranty
This product is subject to the terms and conditions described at
http://www.neptronic.com/Sales-Conditions.aspx.
www.neptronic.com
Page | – 2 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
www.neptronic.com
Page | – 4 –
Overview
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Handling and Lifting
Lifting or handling MUST be carried out by trained and qualified personnel.
Ensure that the lifting operation has been properly planned, assessed for risk
and that the equipment has been checked by a competent Health & Safety
representative, and effective control measures are in place.
It is the customer’s responsibility to ensure that the operators are trained
in handling heavy goods and to enforce the relevant lifting regulations.
The SKS4 humidifier MUST be handled and lifted with care at all times and
remain in its original packaging for as long as possible, prior to
installation.
The SKS4 humidifier package may be carried using a forklift from the
underside. Exercise caution before lifting to ensure that the load is
balanced.
Lifting of the SKS4 humidifier MUST always be carried out using the
appropriate Neptronic Lifting bracket. The lifting sling angle must be greater
than 30° to the horizontal. Refer to Dimensions and Weight section for system
dry weights.
Slide lifting flap here
Illustration 1 – SKS4 Humidifier Lifting Bracket
Unpacking
The SKS4 humidifier is shipped inside carton boxes or in a wooden crate.
Remove packing and skids prior to commissioning.
www.neptronic.com
Page | – 5 –
List of Accessories Supplied
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
The following accessories are supplied with the SKS4 humidifier: · 2
adjustable collars per steam outlet for the connection of the steam hose. · 1
strainer (option). · 1 actuated control valve (AM060 actuator with globe
valve) (option). · 1 float and thermostatic steam trap for the condensate
return (option). · 1 Installation Instructions and User Manual.
Other Related Documents
· Wiring diagram · Start-up check list · BACnet Communication Module User
Guide (for humidifiers with BACnet option) · Modbus Communication Module User
Guide (for humidifiers with Modbus option)
Technical Specifications
SKS4 Nomenclature
Model
Maximum Capacities
Heat Exchanger
Type
Voltage Code
SKS4 – 1 2 5 0 – SLP A
Available maximum capacities in lb/h or kg/h at maximum pressure/temperature
A=120 B=208
Available voltages (Vac)
C=240
Code SLP
Material & Pressure Range of Heat Exchanger
Stainless Low Pressure
Illustration 2 – SKS4 Humidifier Nomenclature
www.neptronic.com
Page | – 6 –
Steam Output Capacities
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Table 1 – Stainless Steel Heat Exchanger
Model*
Nb of Heat Exc.
Output Steam Capacity (lb/h) [kg/h] for Supply Steam Pressure (2)
5 PSI
8 PSI
10 PSI 12 PSI
15PSI
[34.5kPa] [55.1kPa] [68.9kPa] [82.7kPa] [103.4kPa]
SKS4-050-SLP
1
17 [8]
27
33
40
[12] [15] [18]
50 [23]
SKS4-100-SLP
1
33 [15]
53 [24]
67 [30]
80 [36]
100 [45]
SKS4-130-SLP
1
43 [19]
69 [31]
87 [39]
104 [47]
130 [59]
SKS4-190-SLP
1
63 [28]
101 [46]
127 [57]
152 [69]
190 [86]
SKS4-290-SLP
1
97 [44]
155 [70]
193
232
290
[87] [105] [132]
SKS4-390-SLP
1
130 [59]
208
260
312
390
[94] [118] [142] [177]
SKS4-500-SLP
1
167
267
333
400
500
[76] [121] [151] [182] [230]
SKS4-690-SLP
1
230 [104]
368 [167]
460 [209]
552 [251]
690 [314]
SKS4-950-SLP
1
317 [144]
507 [230]
633 [287]
760 [345]
950 [432]
SKS4-1250-SLP
2
417 [189]
667 [303]
833 [378]
1000 [454]
1250 [568]
Steam Outlet Qty & Ø (in) [mm] (1x) 2” [51] (1x) 3” [76] (1x) 3” [76] (1x) 3” [76] (1x) 4” [100] (1x) 4” [100] (1x) 5” [125] (1x) 5” [125] (2x) 4” [100] (2x) 5” [125]
Note: (*) In-between capacity models are available upon request to factory.
1 – Power supply can be 120Vac 1.5A, 208Vac 0.75A or 240/250Vac 0.75A (60Hz).
2 – Raw steam pressure at actual point of connection to humidifier. 3 –
Maximum static duct pressure is 5” w.c. [1.250 kPa]. For higher static duct
pressures, please consult Neptronic or its authorized distributor.
www.neptronic.com
Page | – 7 –
Dimensions and Weight
Standard Humidifier
A B
G
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
E
6″ (15cm)
C H
D
I
F
2nd Steam Outlet on SKS4-950 & 1250
Control Panel
Raw Steam Inlet
Condensate Return Outlet
Disconnect Switch Water Supply Inlet Pan Drain Outlet Main Drain Outlet
Illustration 3 – SKS4 Humidifier Dimensions
Table 2 – Dimensions and Weight (Stainless Steel Heat Exchanger) Dimensions (in) [cm]
Model
A
B
C
D
E
F
G
SKS4-050-SLP SKS4-100-SLP SKS4-130-SLP SKS4-190-SLP SKS4-290-SLP SKS4-390-SLP SKS4-500-SLP SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP
19.8 [50.3] 19.8 [50.3] 19.8 [50.3] 22.9 [58.2] 22.9 [58.2] 27.6 [70.0] 27.6 [70.0] 30.9 [78.5] 30.9 [78.5] 30.9 [78.5]
45.8 [116.3] 45.8 [116.3] 45.8 [116.3] 45.7 [116.2] 45.7 [116.2] 58.6 [148.9] 58.6 [148.9] 58.6 [148.9] 58.6 [148.9] 58.6 [148.9]
26.2 [66.5] 26.2 [66.5] 26.2 [66.5] 29.4 [74.7] 29.4 [74.7] 27.3 [69.3] 27.3 [69.3] 34.3 [87.1] 34.3 [87.1] 42.5 [108.0]
43.5 [110.5] 43.5 [110.5] 43.5 [110.5] 46.8 [118.8] 46.8 [118.8] 44.6 [113.3] 44.6 [113.3] 51.7 [131.2] 51.7 [131.2] 59.9 [152.1]
7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.2 [18.2] 7.2 [18.2] 8.1 [20.6] 6.6 [16.8] 6.6 [16.8]
2.4 [6.0] 2.4 [6.0] 2.4 [6.0] 2.3 [5.8] 2.3 [5.8] 4.1 [10.5] 4.1 [10.5] 4.2 [10.6] 4.2 [10.6] 4.1 [10.5]
11.7 [29.8] 11.7 [29.8] 11.7 [29.8] 11.4 [29.0] 11.4 [29.0] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2]
1st Heat Exc. H1 I1
13.4 [34.0] 10.7 [27.2] 10.6 [26.9] 7.9 [20.1] 10.6 [26.9] 7.9 [20.1] 11.0
[27.9] 7.8 [20.0] 11.0 [27.9] 7.8 [20.0] 11.7 [29.7] 8.0 [20.3] 11.7 [29.7]
8.0 [20.3] 13.2 [33.5] 9.5 [24.1] 13.2 [33.5] 9.6 [24.3] 12.4 [31.4] 8.8
[22.2]
2nd Heat Exc. H2 I2 –
24.0 [60.8] 20.4 [51.9]
Weight (lb) [kg]
Empty
In Operation
255 [116] 265 [120] 270 [122] 310 [141] 315 [143] 395 [179] 400 [182] 470 [213] 475 [215] 570 [259]
457 [207] 487 [221] 484 [220] 578 [263] 616 [280] 828 [376] 822 [373] 1102 [501] 1168 [531] 1574 [715]
www.neptronic.com
Page | – 8 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Humidifier with OSHPD Special Seismic Certification Preapproval (OSP)
A
E
6″ (15cm)
2nd Steam Outlet on SKS4-950 & 1250
B
Control Panel
C D
Raw Steam Inlet
G
H I
F
Use 12x ½” (12mm) bolts and
washers (not supplied) to secure
J
the humidifier to the floor.
Illustration 4 – OSHPD Humidifier Dimensions
Table 3 – OSHPD Humidifier Dimensions and Weight (Stainless Steel Heat Exchanger)
Model A
SKS4-050-SLP SKS4-100-SLP SKS4-130-SLP SKS4-190-SLP SKS4-290-SLP SKS4-390-SLP SKS4-500-SLP SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP
19.8 [50.3] 19.8 [50.3] 19.8 [50.3] 22.9 [58.2] 22.9 [58.2] 27.6 [70.0] 27.6 [70.0] 30.9 [78.5] 30.9 [78.5] 30.9 [78.5]
Dimensions (in) [cm]
B
C
D
E
F
G
45.7 [116.2] 45.7 [116.2] 45.7 [116.2] 45.7 [116.2] 45.7 [116.2] 58.7 [149.1] 58.7 [149.1] 58.7 [149.1] 58.7 [149.1] 58.7 [149.1]
26.2 [66.5] 26.2 [66.5] 26.2 [66.5] 29.4 [74.7] 29.4 [74.7] 27.3 [69.3] 27.3 [69.3] 34.3 [87.1] 34.3 [87.1] 42.5 [108.0]
30.1 [76.5] 30.1 [76.5] 30.1 [76.5] 33.3 [84.6] 33.3 [84.6] 31.2 [79.2] 31.2 [79.2] 38.2 [97.0] 38.2 [97.0] 46.2 [117.3]
7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.1 [18.1] 7.2 [18.2] 7.2 [18.2] 8.1 [20.6] 6.6 [16.8] 6.6 [16.8]
2.4 [6.0] 2.4 [6.0] 2.4 [6.0] 2.3 [5.8] 2.3 [5.8] 4.1 [10.5] 4.1 [10.5] 4.2 [10.6] 4.2 [10.6] 4.1 [10.5]
11.7 [29.8] 11.7 [29.8] 11.7 [29.8] 11.4 [29.0] 11.4 [29.0] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2] 11.9 [30.2]
1st Heat Exc. H1 I1
13.4 [34.0] 10.8 [27.4] 10.6 [26.9] 8.0 [20.2] 10.6 [26.9] 8.0 [20.2] 11.0
[27.9] 7.8 [20.0] 11.0 [27.9] 7.8 [20.0] 11.7 [29.7] 8.0 [20.3] 11.7 [29.7]
8.0 [20.3] 13.2 [33.5] 9.5 [24.1] 13.2 [33.5] 9.6 [24.3] 12.4 [31.4] 8.8
[22.2]
2nd Heat Exc. H2 I2 –
24.0 [60.8] 20.4 [51.9]
Condensate Return Outlet
Disconenct Switch
Water Supply Inlet
Pan Drain Outlet Main Drain Outlet
Weight (lb) [kg]
J
Empty
In Operation
22.3 [56.6] 22.3 [56.6] 22.3 [56.6] 25.3 [64.3] 25.3 [64.3] 30.0 [76.1] 30.0 [76.1] 33.3 [84.7] 33.3 [84.7] 33.3 [84.7]
255 [116] 265 [120] 270 [122] 310 [141] 315 [143] 395 [179] 400 [182] 470 [213] 475 [215] 570 [259]
482 [219] 487 [221] 484 [220] 578 [263] 616 [280] 828 [376] 822 [373] 1102 [501] 1168 [531] 1574 [715]
www.neptronic.com
Page | – 9 –
Weather Proof Enclosure
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Raw Steam Inlet Condensate Return Outlet
Water Supply Inlet Drain Outlet
Steam Outlet
A
D
C
Power Supply and Electrical Controls
B
E
Illustration 5 – Weather Proof Enclosure Dimensions
Table 4 – Weather Proof Enclosure Dimensions and Weight (Stainless Steel Heat Exchanger)
Dimensions (in) [cm]
Weight (lb) [kg]
Model
A
B
C
D
E
Empty
In Operation
SKS4-050-SLP
SKS4-100-SLP
SKS4-130-SLP SKS4-190-SLP SKS4-290-SLP
46.1
45.9
51.5
85.2
[117.2] [116.6] [130.9] [216.5]
84.6 [214.9]
SKS4-390-SLP
SKS4-500-SLP
SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP
50.2 [127.5]
50 [127]
72.5
85.2
84.6
[184.2] [216.5] [214.9]
www.neptronic.com
555 [252] 565 [256] 570 [258] 610 [277] 615 [279] 695 [315] 700 [318] 870 [394] 875 [396] 970 [440]
757 [343] 787 [357] 784 [356] 878 [399] 916 [416] 1128 [512] 1122 [509] 1502 [682] 1568 [712] 1974 [896]
Page | – 10 –
Installation Overview
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Installation Method Statement
WARNING: Risk of electric shock. Disconnect the appliance from electric supply
before commencing installation. Note: All installation work must conform to
local codes and regulations.
All work related to the installation of the SKS4 humidifier MUST only be
performed by skilled and qualified technical personnel (e.g. electricians,
plumbers or technicians with appropriate training). The customer is
responsible for ensuring their suitability. For the installation of the SKS4
humidifier and its associated components, no special tooling is required above
that of a fitter’s toolkit.
Installation Steps
Step 1: Unit Positioning and Mounting Step 2: Steam Distribution Pipe
Installation Step 3: Raw Steam Supply Connection Step 4: Water Supply
Installation Step 5: Water Drain Connection Step 6: Electrical Supply
Connections Step 7: Electrical Control Connections
Clean Steam Outlet(s)
Control Panel
Power Supply and Electrical Controls
Main Drain Outlet Pan Drain Outlet
Water Supply Inlet Legs (Optional)
Illustration 6 – SKS4 Humidifier Overview
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Page | – 11 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 1 – Unit Positioning and Mounting
Location
WARNING: Failure to follow these guidelines will void the warranty.
Consider the following points before deciding the location for the SKS4
humidifier: · Plan a location that is easy to access and permits an easy
inspection and servicing of the humidifier. · Do not install the humidifier
where failure of the appliance could cause damage to the building structure or
to other expensive equipment. · Ensure that the location is well ventilated
and that the ambient temperature is less than 86°F (30°C). · For humidifiers
having the weather proof enclosure, ensure that the humidifier is installed in
a location in which the outside temperature lies between -40°F (-40°C) and
122°F (50°C). · Consider the total steam line length between the humidifier
and the steam distributor based on the steam line material type: o For
flexible steam hose, total steam line must not exceed 16 feet (5 meters). For
longer distances, use insulated hard piping. o For insulated hard piping, the
total steam line is determined by the humidifier capacity: one equivalent foot
for each lb/hr capacity of the humidifier (0.67 m for each kg/hr), with a
maximum of 50 feet (15 m). For longer steam line runs, consult factory. · The
SKS4 humidifier must be installed in a way that ensures that the steam hose
length is kept to the shortest possible length. · The SKS4 humidifier must be
installed with provision for the steam supply piping connections and steam
condensate trap installation.
www.neptronic.com
Page | – 12 –
Positioning
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
· The SKS4 humidifier can be provided with adjustable legs (optional) in order
to ensure proper level when installed directly on the floor. Provide a level,
solid foundation for the humidifier and ensure that the floor beneath the
humidifier is water proof to withstand any water spillage during servicing or
in the event of a problem. Ensure that the humidifier is properly attached
through its legs using anchors to the floor.
· The SKS4 humidifier must be properly levelled, in order to ensure proper
return of condensate through the heat exchanger.
Minimum Clearances
· The following minimum clearances are indicated for inspection and servicing
access. The SKS4 humidifier is designed for a zero clearance to combustible
materials.
· Leave a clearance of at least 39” (1 m) to the front panel and 24″ (0.6 m)
on the left, right and back sides of the humidifier.
· Leave a clearance of at least 30” (0.75 m) on top of the humidifier.
m2i4n”im(0u.m6m) 24m” (in0i.m6mum)
30″ (0.75m) minimum
24m” (in0i.m6mum) m3in9im” (u1mm)
Illustration 7 – SKS4 Minimum Clearances (Floor Mounted)
Ceiling Installation
The SKS4-050, 100 & 130-SLP models can also be hung by the ceiling using the
appropriate lifting and hanging bracket. Provide the following clearances when
hanging these models to the ceiling:
27.4″ (69.5 cm)
7.6″ (19 cm)
43.5″ (110 cm)
Rod and Nuts 3/8″ (M10) minimum
Lifting and Hanging Bracket
Illustration 8 – Minimum Clearances for Models SKS4-050, 100 & 130-SLP (Ceiling Mounted)
www.neptronic.com
Page | – 13 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Floor Mounting – Humidifier with OSHPD Preapproval (OSP)
For SKS4 humidifiers with the OSHPD Special Seismic Certification Preapproval
(OSP) option, the floor legs must be secured to the floor using 12 bolts and
washers of 1/2″ (12mm) diameter (not supplied).
E
D
Rear Legs
Front Legs
12x ؽ” (12mm)
F
G
C
B
A
Illustration 9 – OSHPD Humidifier Floor Mounting Dimensions (Bottom View)
Table 5 – OSHPD Humidifier Floor Mounting Dimensions
Model SKS4-050-SLP SKS4-100-SLP SKS4-130-SLP SKS4-190-SLP SKS4-290-SLP SKS4-390-SLP SKS4-500-SLP SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP
A
11.1 [28.2] 11.1 [28.2] 11.1 [28.2] 11.1 [28.2] 11.1 [28.2] 11.1 [28.2] 11.1
[28.2] 11.1 [28.2] 11.1 [28.2] 11.1 [28.2]
B
31.1 [79.1] 31.1 [79.1] 31.1 [79.1] 31.1 [79.1] 31.1 [79.1] 44.1 [112.1] 44.1
[112.1] 44.1 [112.1] 44.1 [112.1] 44.1 [112.1]
Dimensions (in) [cm]
C
D
E
2.7
5.4
2.2
[6.9] [13.7] [5.6]
2.7
5.4
2.2
[6.9] [13.7] [5.6]
2.7
5.4
2.2
[6.9] [13.7] [5.6]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
2.7
5.4
2.3
[6.9] [13.7] [5.9]
F
16.5 [41.9] 16.5 [41.9] 16.5 [41.9] 19.3 [49.1] 19.3 [49.1] 23.9 [60.8] 23.9
[60.8] 27.3 [69.4] 27.3 [69.4] 27.3 [69.4]
G
19.8 [50.3] 19.8 [50.3] 19.8 [50.3] 22.9 [58.2] 22.9 [58.2] 27.6 [70.0] 27.6
[70.0] 30.9 [78.5] 30.9 [78.5] 30.9 [78.5]
www.neptronic.com
Page | – 14 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Minimum Clearances – Weather Proof Enclosure
· The following minimum clearances are indicated for inspection and servicing
access. The SKS4 humidifier is designed for a zero clearance to combustible
materials.
· Leave a clearance of at least 45” (1.1 m) to the front panel and 24″ (0.6 m)
on the left, 36″ (0.91 m) on the right and 72″ (1.8 m) back sides of the
humidifier.
· Leave a clearance of at least 48” (1.2 m) on top of the humidifier.
48″ (1.2m) minimum
Illustration 10 – Weather Proof Enclosure Clearances
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Page | – 15 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Weather Proof Enclosure Installation on Floor/Roof
The base of the SKS4 humidifier must be secured to the floor/roof using ½”
(12mm) diameter bolts and washers (not supplied). Use the provided ½” (12mm)
diameter holes to secure the SKS4 humidifier to the floor/roof.
Use Ø ½ (12mm) bolts and washers (not supplied) to secure the humidifier to
the floor/roof
Illustration 11 – Floor/Roof Installation
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Page | – 16 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 2 – Steam Distribution Pipe Installation
Fundamental Design Concepts
Follow these general installation rules in order to avoid any restrictions
inside the distribution pipes and the humidifier, as well as condensation
accumulation, which can lead to severe water accumulation in the duct or a
humidifier malfunction.
CAUTION: Risk of malfunction. Avoid kinks, sags and areas where condensate can
be trapped.
· The minimum steam pipe gradient must be 7°, i.e. 5” (125mm) rise in 40” (1m)
run. · The total length of flexible steam hoses must not exceed 16 feet (5 m).
For insulated rigid piping, it must not exceed
50 feet (15 m). · The lowest point of any steam hose or rigid pipe must be the
humidifier. If the humidifier cannot be the lowest
point of the piping, install one or more steam traps (S Type) at the lowest
point(s) of the steam supply piping. The steam separator (S trap) must be
installed higher than the static pressure of the system by at least 2″ (51
mm). · Use rigid copper piping whenever possible. Flexible steam hoses can be
used for short runs (up to 16 feet or 5 m) or for interconnecting between
rigid pipe runs. Ensure that there are no kinks and that the hose does not sag
when using flexible tubing. Do not use flexible hoses for curved portions of
the steam line. · When using rigid copper pipe, insulation must be used to
diminish condensation build up.
Incorrect Installation
SKS
Illustration 12 – Steam Distribution Pipes: Incorrect Installation
Minimum 12” (305mm)
Correct Installation Humidifier with 2 S.A.M.E2 manifolds
15%
SKS
Static pressure + 2” (50mm)
Correct Installation humidifier with Multisteam.
15% Minimum 12”
(305mm)
SKS
Illustration 13 – Steam Distribution Pipes: Correct Installation
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Static pressure + 2” (50mm)
Page | – 17 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Steam Dispersion System Selection
In order to prevent the accumulation of condensation in air ducts, Neptronic
has designed three basic configurations of steam distribution systems to
provide the most economical solution for any particular application.
Steam Absorption Manifold (S.A.M.E2) Horizontal Duct
The S.A.M.E2 system is suitable for installations where absorption distances
are short, less than 5 feet (1500 mm), and/or low duct temperatures are in
effect. S.A.M.E2 are used in applications with restricted duct dimensions.
air
900
Illustration 14 – Steam Absorption Manifold (S.A.M.E2) Horizontal Duct
Steam Absorption Manifold (S.A.M.E2) Vertical Duct
The S.A.M.E2 system for vertical ducts is used when the absorption distances
are normal and the requirement is for an economical and efficient solution.
Illustration 15 – Steam Absorption Manifold (S.A.M.E2) Vertical Duct
Multi-Steam System
The Multi-Steam system is used in critical locations in air handling systems,
particularly where absorption distances are very short, less than 3 feet (900
mm), or where low air duct temperatures are present. The Multi-Steam is custom
made to the dimensions of the duct or AHU. Instructions to install the Multi-
Steam system are described in a specific installation instructions manual
enclosed with the Multi-Steam system.
air
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Illustration 16 – Multi Steam System
Page | – 18 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Steam Dispersion General Recommendations
Follow these general rules based on the steam capacity of the humidifier:
· The connection pipe sizes between the SKS4 humidifier and the steam
distributor in the duct must be: o 2” (51mm) for capacities up to 90lb/h
(41kg/h) o 3” (76mm) for capacities up to 242lb/h (110kg/h) o 4” (100mm) for
capacities up to 440lb/h (200kg/h) o 5” (125mm) for capacities up to 690lb/h
(314kg/h)
· For all humidifiers having a capacity below 220lb/h (100kg/h), use standard
Neptronic S.A.M.E2 steam distribution pipes. A Multi-Steam system can be
offered if shorter absorption distances are required.
· For all humidifiers having a capacity above 220lb/h (100kg/h), use the
Multi-Steam system.
· For all humidifiers having a capacity above 690lb/h (314kg/h), use 2 Multi-
Steam units per air handling unit (AHU) or air duct with an equal duty split
to each Multi-Steam system.
S.A.M.E2 System
Positioning the S.A.M.E2
The steam manifold must be mounted and secured through the side of the air
handling unit or duct. Ensure that provisions are made for safe accessibility,
ideally with an observation light and window. Ensure that the construction of
the duct wall is suitable enough to support the steam pipe for the duration of
the installation life.
The dimension of the hole size in the duct must be as follows:
Steam Manifold Ø 2 ” (54 mm)
Hole Size ØA
2″ (51 mm) 3″ (76 mm)
5” (120mm)
ØA
4” minimum (102mm)
5” (120mm)
Illustration 17 – Duct Hole Dimensions and Minimum Distance
WARNING: Risk of condensation. Ensure that the minimum distance at the end of
the manifold is at least 4″ (102 mm) from the top of the duct.
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Page | – 19 –
Placement of Steam Pipe in Horizontal Duct
2 Pipes
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
3 Pipes
H 24” minimum
(600mm)
1/5 H
2/5 H
air
1/2 H
H 36” minimum
(900mm)
1/6 H
1/3 H
air
8” (200mm)
10” (250mm)
10” (250mm)
Illustration 18 – Pipe Placement: Horizontal Duct Note: Steam pipe must be
supported on the end by appropriate duct hanger or strap (supplied by others).
Placement of Steam Pipe in Vertical Duct
1/4 W
2 Pipes
W 24” minimum
(600mm)
1/2 W
1/4 W
1/6 W
3 Pipes
W
36” minimum (900mm)
1/3 W
1/3 W
1/6 W
Illustration 19 – Pipe Placement: Vertical Duct
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Page | – 20 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Steam Pipe Work to Duct Connections with S.A.M.E2
Models SKS4-050-SLP
For these models, a single Ø2” (51mm) feed pipe must be connected to two
S.A.M.E2 steam manifolds with a suitable reduction at the lowest point to
allow a ؽ” (15mm) condensate drain from the main steam supply.
Insulated pipe
Ø2” (51mm)
Min. 2/5 H
Air Duct
H
ؽ” (15mm)
Static pressure + 2” (50mm)
Min. 4” (100mm)
Steam distribution manifolds (S.A.M.E2) minimum lenght = 35” (900mm)
Illustration 20 – SKS4-050-SLP Steam Pipe Connections
Models SKS4-100-SLP
For these models, a single Ø3” (76mm) feed pipe must be connected to two
S.A.M.E2 steam manifolds with a suitable reduction at the lowest point to
allow a ؽ” (15mm) condensate drain from the main steam supply.
Insulated pipe
Ø3” (76mm)
Min. 2/5 H
Air Duct
H
www.neptronic.com
ؽ” (15mm)
Static pressure + 2” (50mm)
Min. 4” (100mm)
Steam distribution manifolds (S.A.M.E2) minimum lenght = 35” (900mm)
Illustration 21 – SKS4-100-SLP Steam Pipe Connections
Page | – 21 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Models SKS4-130-SLP & SKS4-190-SLP
For these models, a single Ø3” (76mm) feed pipe must be connected to three
S.A.M.E2 steam manifolds with a suitable reduction at the lowest point to
allow a ؽ” (15mm) condensate drain from the main steam supply.
Insulated Pipe
Min. 1/3 H
Air Duct
Ø3″ (76mm)
H
ؽ” (15mm)
Static Pressure + 2″ (50mm)
Min. 4″ (100mm)
Steam Distribution Manifolds (S.A.M.E2) minimum length = 35″ (900mm)
Illustration 22 – SKS4-130-SLP & SKS4-190-SLP Steam Pipe Connections
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Page | – 22 –
Multi-Steam System
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Selection of Multi-Steam System
· For all Multi-Steam units, use the Neptronic Humidisoft program to size the
unit.
· Where two Multi-Steam units are required (duties in excess of 690lb/h
[314kg/h]), make your selection using the following rules:
o Divide the air flow volume in half. o Divide the AHU / air duct width in
half. o Height of the duct must remain at 100% its height. o This will size
the Multi-Steam units so that they can be placed side by side.
· For installation of Multi-Steam units, refer to the Neptronic Multi-Steam
Installation Instructions.
Air duct
Mounting bracket must be level horizontally
Rod, bolt, nut and washer assembly
Min. 2” (50 mm)
Min. 2” (50 mm)
Steam supply hose or rigid pipe to Humidifier
Min. 2” (50 mm)
ؽ” (15mm)
Static pressure + 2” (50mm)
Condensate drain pipe to steam trap Header must be pitched toward condensate drain
Illustration 23 – Multi-Steam (Horizontal Duct)
Air flow
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Air duct
10% slope is integrated in header design
Steam supply hose or rigid insulated pipe
to Humidifier (by others)
Neptronic Humidifier
Air flow
Rod, bolt, nut and washer assembly (by others)
Condensate drain pipe (by others) Static pressure + 2” (50mm)
Illustration 24 – Multi-Steam (Vertical Duct)
Page | – 23 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Steam Pipe Work to Duct Connections with Multi-Steam
Models SKS4-050-SLP to SKS4-690-SLP
For these models, a single Ø2” (51mm), Ø3” (76mm), Ø4” (100mm) or Ø5” (125mm) feed pipe must be connected to a single Multi-Steam with a suitable reduction at the lowest point to allow a Ø1/2” (15mm) condensate drain from the main steam supply.
Min. 7° pipe slope
Insulated Pipe
Air Duct
Ø2″ (51mm) or Ø3″ (76mm) or
Ø4″ (100mm) or Ø5″ (125mm)
ؽ” (15mm)
Static Pressure + 2″ (50mm)
Multisteam
Total length of steam conduit must not exceed 16 feet (5m).
Illustration 25 – SKS4-050-SLP to SKS4-690-SLP Steam Pipe Connections
Models SKS4-950-SLP & SKS4-1250-SLP
For these models, two Ø4” (100mm) or Ø5” (125mm) steam outlets must be
connected to two Multi-Steam with a suitable reduction at the lowest point to
allow a Ø1/2” (15mm) condensate drain from the main steam supply. If the two
Ø1/2” (15mm) condensate pipes are connected, the common condensate drain must
be Ø3/4” (20mm).
Air Duct
Total length of steam conduit must not exceed 16 feet (5m)
Min. 7° pipe slope Insulated Pipe
Ø4″ (100mm) (x2) or Ø5″ (125mm) (x2)
ؽ” (15mm)
ؾ” (20mm)
Static Pressure + 2″ (50mm)
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Illustration 26 – SKS4-950-SLP & SKS4-1250-SLP Steam Pipe Connections
Page | – 24 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 3 – Raw Steam Supply Connection
Steam supply piping must conform to local codes and regulations. Any
installation work must be carried out by suitably qualified personnel.
· Risk of distortion and failure. Steam piping installation must be supported
so that no strain are imposed on the humidifier steam inlet flange and control
valve.
· Pipes must be inspected for dirt and chips after threading and reaming the
end of pipes.
Union Dimensions and Installation
Table 6 – Raw Steam Supply Dimensions Model
SKS4-050/100/130-SLP SKS4-190/290-SLP
SKS4-390/500/690-SLP SKS4-950-SLP SKS4-1250-SLP
Raw Steam Inlet ؾ” (20mm) Ø1” (25mm)
Ø1-1/4” (32mm) Ø1-1/2” (40mm) Ø1-1/4” (32mm) (x2)
Condensate Return Outlet
ؾ” (20mm)
ؾ” (20mm)
Ø1-1/4” (32mm)
Ø1-1/2” (40mm)
Ø1-1/4” (32mm) (x2)
Note: Model SKS4-1250-SLP is equipped with two heat exchangers and therefore
has two raw steam inlets and two condensate return outlets.
Typical Raw Steam Installation
· A strainer as well as a shut off valve (not supplied) must be installed
upstream to the actuated control valve on the raw steam supply pipe.
· Vacuum breakers (not supplied) must be installed between the SKS4 heat
exchanger and the actuated control valve.
· Brass coupling must be used between the heat exchanger stainless steel pipes
and steam inlet / condensate outlet piping.
· The condensate must be evacuated efficiently. Therefore, a condensate pocket
(not supplied) and stream trap must be installed to ensure proper condensate
elimination.
· After installation, field piping and humidifier steam piping must be checked
for leaks. All leaks MUST be sealed prior to commissioning the Humidifier.
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Page | – 25 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Steam Supply Size
The size of the steam supply pipe and the control valve must be calculated
considering 1.5 times more raw steam compared to the clean steam produced and
distributed into the AHU.
STEAM
Vacuum breaker (supplied by others)
Pressure gage (supplied by others)
Shut off valve (supplied by others)
Piping (by others)
SKS4
12″ [30cm] minimum
Strainer (supplied)
Actuated control valve (supplied) Float & thermostatic steam trap (supplied)
Steam Trap (supplied by others) Small capacity to eliminate possible
condensate from raw steam line
CONDENSATE RETURN
Cap (supplied by others)
Check valve (supplied by others) Condensate pocket (supplied by others)
Diameter should be ½” [25mm] higher than condensate pipe
Cap (supplied by others)
Illustration 27 – SKS4 Pipework for Raw Steam
Raw Steam Supply and Condensate Installation
· Connect the raw steam inlet to an adequate steam supply with actuated
control valve, strainer and shut off valve.
· One control valve is required for each raw steam inlet.
· Control valve must be fitted with a mechanism and be electrically wired so
that the valve returns to the closed position when no air flow is detected in
the AHU.
· In case of two condensate outlets, each individual condensate outlet
requires an individual steam trap. Do not `’group trap”.
· Float and thermostatic type steam traps are recommended for the condensate
from the heat exchanger and must be fitted no less than 12” (30cm) below the
condensate outlets, with condensate pocket fitted before the trap.
· Thermostatic type steam traps are recommended as the small capacity trap to
eliminate condensate from the raw steam line.
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Page | – 26 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Positioning the Control Valve
· Install the actuated valve (AM060 actuator with globe valve) between 20 to
30 degrees from vertical in order to reduce the convection heat to the
actuator.
20-30º
ELECTRIC ACTUATOR
VALVE BODY
A
A STEAM SUPPLY SIDE
B
A B
A
FLOW DIRECTION
Illustration 28 – Control Valve Orientation and Angle
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Page | – 27 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 4 – Water Supply Installation
Water supply installation must conform to Local and National Codes. Any installation work must be carried out by suitably qualified personnel.
Water Inlet Specifications
The SKS4 humidifier is designed to be used with tap, reverse osmosis and
deionised water. · For normal operation, pre-treatment of water is not
necessary. · As the humidifier is equipped with the Neptronic Anti-Foaming
Energy Conservation (AFEC) system, which drains the humidifier in the presence
of foam to ensure clean and safe operation, the use of softened water is not
required. If a third party requires a water softener for any operational or
equivalency purposes, ensure that the water dilution feature is enabled. To
enable this function, configure the value of the BlowdownRate setting located
in the Installation menu (see page 47 for details). · Water Inlet
Specifications: o Maximum water supply pressure: 25 to 70 psig (170 to 480kPa)
o Minimum water temperature: 39°F (4°C) o Maximum water temperature: 86°F
(30°C)
Chloride Concentration in Water Supply
The presence of chlorides (Cl-) can cause corrosion to the humidifier
components that operate at elevated temperatures, such as the evaporation
chamber. Damage from corrosion is not covered under warranty.
Here are some general guidelines to follow for chloride concentration based on
the type of water used:
Water Source RO/DI
Softened Tap
Chloride (mg/L or PPM) < 5 < 30 < 50
Water Treatment Guidelines
Water treatment, such as reverse osmosis and deionization, can dramatically reduce the service requirements of the humidifiers in hard water environments. The use of purified water allows for longer operation time in between drain intervals, which can be important for maintaining humidity control in high- demand applications.
Here are some general guidelines to follow in regard to water treatment:
Total Hardness (mg/L or PPM)
<50
61-120
120-180 181-800
800
Description
Soft
Moderately Hard
Hard Very Hard Extremely Hard
RO Recommended?
No Optional (based on application
requirements) Yes Yes
Yes, High-TDS System Required
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Page | – 28 –
Water Supply Line Installation
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
· To facilitate servicing, a shut off valve (not supplied) must be installed
in the water line, close to 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.
· To install the water supply, connect to the male threaded part of the pipe
and tighten it.
Model
Water Inlet Connection Size
SKS4-XXXX
½” (15mm) NPT Male
Shut-off Valve Manometer Water Hammer
(Isolation Valve)
Arrestor
Water Filter Check Valve
Water Inlet Connection
Note: The shut-off valve (isolation valve), water filter, manometer, water
hammer arrestor and check valve are all supplied by others
Illustration 29 – Water Supply Connections
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Page | – 29 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 5 – Water Drain Connection
Water drain installation must conform to Local and National Codes. Any installation work must be carried out by suitably qualified personnel.
Water Drain Specifications
· Water drain temperature: 140°F (+60°C)
Model
SKS4-050 to 290-SLP SKS4-390 to 1250-SLP
Water Drain Outlet Connection Size Ø7/8” (22mm)
Ø1 3/8” (35mm)
Pipe Ø for Length More Than 15ft (4.5m)
Ø1 ½” (40mm)
Ø2″ (50mm)
Maximum Drain Flow Rate
12gpm (48 l/min)
24gpm (96 l/min)
Water Drain Installation
· Water drain outlet connection must be connected to drain pipe of sufficient
size.
· It is recommended to use Ø7/8” (22mm) or Ø1 3/8” (35mm) minimum standard
copper or stainless steel hydraulic pipes.
· The installed drain piping must be rated for a temperature of 212°F (100°C).
· Water main drain and drip pan must be kept separate to the open drain. Do
not connect the main drain and the drip pan before the open drain, they must
not be piped together or to other appliances.
· Minimum water drain pipe gradient must be of ¼” (6.5mm) per foot (300mm)
horizontal run.
· No drain trap must be installed on the humidifier drain pipes.
· The maximum equivalent pipe length of the main drain must not exceed 15ft
(4.5m) between the drain outlet of the humidifier and the open drain.
Otherwise, the drain pipe diameter must be increased to the value indicated in
the table above.
· A minimum 1” (25mm) air gap must be kept between the connection of the
humidifier drain pipes and the open drain line.
SKS4
Drip Pan Ø ½ (15mm)
Main Drain Ø (22mm) or Ø 1 (35mm)
Building water drain Ø 3 (80mm) minimum
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Illustration 30 – Water Drain Connections
Page | – 30 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Stage 6 – Electrical Supply Connections
CAUTION: Risk of electric shock. Disconnect the humidifier from the electric
supply before proceeding with the connection. All work concerned with
electrical installation MUST only be performed by a qualified electrician and
must conform to the procedure, regulation and local codes.
· Use copper conductors only. · The electrical supply must also be isolated
for the purpose of emergency and servicing. · The isolator must have a contact
separation of at least 0.12″ (3mm). · The humidifier is equipped with a built-
in disconnect switch, to turn off the power without opening any access
doors. · An external over current protection must be installed on the supply,
adjacent to the humidifier. It is also
recommended to install a circuit breaker. · To provide strain relief to the
supply cable, install a knock-out (not supplied) at the bottom of the
electrical
compartment of the humidifier. · Ensure that the size of the wire conductors
is appropriate for the current supplied. · Ensure that the incoming power
cable is secured via a suitably sized cable gland. · Ensure that each terminal
connection is properly secured. · Ensure that the ground conductor is equipped
with a ring terminal and is connected directly to the electrical
panel. Do not use raw steam piping as an electrical ground.
Ground
Disconnect Switch
L1
L2
or (L)
(N)
Illustration 31 – Power Supply Connection
Electrical Power Supply
The SKS4 humidifier requires the following single phase power supply:
Model SKS4-050 to 290-SLP SKS4-390 to 1250-SLP
Voltage
120Vac – 1ph 208Vac – 1ph 240Vac – 1ph
Current 4A 8A
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Page | – 31 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 7 – Electrical Control Connections
Printed Circuit Board
1 23 45
JP6 WATER LEVEL
1 23 JP7
WATER TEMP+FOAM
1 234 JP9
WATER VALVES
LCD1
ETHERNET BOARD
JP3
12 JP10
DRAIN PUMP
1 234 JP12
STEAM VALVE
JP13 1
THERMAL SWITCH
2
ETHERNET PCB
SD1 Micro SD card port
CN2
USB drive port
JP4
ETHERNET BOARD
Electrical Control Connections
TB4
TB1 TB2 TB3
TXD
JP1 RXD
EOL
EOL
JP2
TXD RXD
NETWORK PCB
NETWORK BOARD
JP5
TB5 TB6
www.neptronic.com
TB7 WATER LEAK DETECT
12
Illustration 32 – Printed Circuit Board Interface
JP20 1 POWER 2
JP25 1 2
Page | – 32 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
The Printed Circuit Board (PCB) is equipped with an advanced microprocessor,
which controls all of the functions of the humidifier. All electrical control
connections have been grouped alongside the bottom left corner of the PCB.
Electrical Control Connections
TB1 TB2 TB3
TB4
RS 485 A+
1
(HRL24) B-
2
Network Contacts
RS 485
(BACnet MS/TP A+
1
or Modbus RTU) B-
2
24 Vac
1
Airflow switch
2
Safety Contacts
High limit humidistat
3
Interlock
4
On/Off demand contact
5
Power Output Analog Inputs Analog Output
Common
1
24 Vac
2
Control Demand
3
Room Humidity
4
Duct Humidity
5
Steam Output
6
Alarm Contacts Service Contacts
Common
1
Normally Open
2
Normally Closed
3
Common
1
Normally Open
2
Normally Closed
3
TB5 TB6
Illustration 33 – Electrical Control Connections
Safety Contact Connections
The Airflow switch contact must be wired between terminals TB3 1&2. If this
contact opens, operation of the SKS4 unit will stop. The unit will display the
airflow switch as open, but will not generate an alarm. If an airflow switch
is not used, install a jumper between terminals TB3 1&2.
The High limit humidistat contact must be wired between terminals TB3 1&3. If
this contact opens, operation of the SKS4 unit will stop and an alarm message
will be displayed. If a high limit humidistat is not used, install a jumper
between terminals TB3 1&3.
The Interlock must be wired between terminals TB3 1&4. If this contact opens,
operation of the SKS4 unit will stop. The unit will display the Interlock as
open, but will not generate an alarm. If Interlock is not used, install a
jumper between terminals TB3 1&4.
Dry Contacts
Two series of volt free contacts are provided:
1. Alarm Contacts
2. Service Contacts
· These contacts are used to switch a low voltage, ideally 24V, with a switching current of no more than 3 Amps.
· Each series has one Normally Closed contact and one Normally Open contact.
· It is recommended to use the Normally Closed contact, as this contact will open in the event of a humidifier fault.
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Page | – 33 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
TB1 TB2 TB3
TB4
1 2
Alarm contacts Service contacts
1 2
1 2
3 4 5
1 2 3
4 5 6
Common
1
Normally Open
2
Normally Closed
3
Common
1
Normally Open
2
Normally Closed
3
Illustration 34 – Alarm and Service Contact Wiring
TB5 TB6
Humidifier Control
Analog Signals
For operation of modulating humidifiers, the analog signal(s) must be
connected between terminals TB4 1 and TB4 3, 4 and/or 5. To configure the
source of the signal(s), access the Control sub-menu located in the
Installation menu (see page 47).
Humidity Control by Humidistat (External Mode)
Humidity controlled externally, using HRO20 humidistat:
www.neptronic.com
Illustration 35 – Control Signal from HRO20 Humidistat
Page | – 34 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Humidity controlled externally, using HRO20 humidistat with SHR10 or SHC80 as
space sensor:
Illustration 36 – Control Signal from HRO20 Humidistat with Remote Humidity
Sensor (SHR10 or SHC80)
Humidity Control by Humidifier (Internal Mode)
Humidity controlled internally, using SHR10 or SHC80 as space sensor:
Illustration 37 – Humidity Signal from Remote Humidity Sensor (SHR10 or SHC80)
www.neptronic.com
Page | – 35 –
Humidity Control by External Signal
Humidity controlled externally, using an external signal source:
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Illustration 38 – Control Signal from External Device
www.neptronic.com
Page | – 36 –
Network Communication
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
If the control signal is from a BACnet MS/TP or Modbus RTU network, connect
terminals TB2 1&2 to the network (RS485 A+ & B-).
If the control signal is from a HRL24, connect terminals TB1 1&2 to the
network (RS485 A+ & B-).
The network control signal(s) must be selected by accessing the Control sub-
menu located in the Installation menu (see page 47). To setup the
communication parameters, access the Integration menu (see page 51).
Note: BACnet MS/TP is configured by default. To change the communication interface to Modbus RTU, access the NtwrkOption setting located in the Network sub-menu of the Integration menu (see page 51).
Illustration 39 – Network Communication Connections
www.neptronic.com
Page | – 37 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Controls Placement (Steam Dispersed into a Duct or AHU)
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 the proper operation of the overall
system. · The return air humidistat must always be located in the return air
duct, 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
placed in a position capable of accurately opening on a loss of air flow, in
order to prevent the humidifier from running when there is no air to absorb
humidity. · The high limit humidistat must be positioned far enough, minimum
15 ft (4.6 m), downstream of the steam dispersion manifold(s) to prevent over
humidification of the duct that could result in condensation. · Any device
that may be triggered by high humidity levels in close proximity to the steam
dispersion manifold must also be positioned at least 15 ft (4.6m), downstream
of the dispersion manifold(s).
15′ minimum (4.6m)
Fresh Air
Return Air
Air
Return SHC80 Humidity sensor
Or room HRO20 humidistat
Air flow switch
Steam dispersion manifold
SHS80 high limit for constant flow and VAV application
(or any other device detecting hum idity)
Illustration 40 – Controls Placement (Steam Dispersed into a Duct or AHU)
www.neptronic.com
Page | – 38 –
Steam Actuated Valve
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
· For models SKS4-050-SLP to SKS4-950-SLP (1 control valve), connect the
humidifier to the actuated valve (AM060 actuator with globe valve) as per the
illustration on the left.
· For models SKS4-1250-SLP (2 control valves), connect the humidifier to the
control valves (AM060 actuators with globe valves) as per the illustration on
the right.
Common 24VAC Analog Signal Output Feedback in Vdc
Common 24VAC Analog Signal Output Feedback in Vdc
SKS4 Humidifier
1 2 34
SKS4 Humidifier
1234
1 2345
12345
12345
Control Valve
Control Valve 1
Control Valve 2
Models SKS4-050 to 950-SLP
Model SKS4-1250-SLP
Illustration 41 – Control Valve Connection
· Ensure that DIP switch #4 is set to the “ON” position on the AM060 actuator.
ON 1 2 34
1 = OFF 2 = OFF 3 = OFF 4 = ON
www.neptronic.com
Rotation: Up Fail safe return: Down
Input in Vdc Feedback in Vdc
Illustration 42 – AM060 Actuator DIP Switch Settings
Page | – 39 –
Controller Configuration
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Back/Menu Button Up Arrow Button
Enter Button Plus Button
Down Arrow Button
Minus Button
Power Button
Drain Button Status Display
Illustration 43 – SKS4 Controller
Control Panel Features
The following are the features of the Control Panel and their description:
Table 7 – Humidifier Control Panel Description
Feature
Description
Indicates that the humidifier is turned on. The LED will begin blinking as the
(Blue) system is initializing.
Status Display Power Button Drain Button
(Red)
O
(Off)
Indicates that the alarm is issuing a warning and that the system must be
verified.
Indicates that the humidifier is turned off.
The power button is used to turn the humidifier on or off. Must be pressed and
held for 3 seconds to perform the related action, in order to prevent
accidental activation. Even when the humidifier is powered off, the controller
remains operational. The drain button is used to manually activate the drain
cycle. Must be pressed and held for 3 seconds to perform the related action,
in order to prevent accidental activation. Even when the humidifier is powered
off, a drain cycle may be initiated. Once the manual drain cycle is completed,
the system will automatically be powered off. To turn the humidifier back on,
press and hold the power button.
Up and Down Arrow Buttons
The up arrow button is used to scroll to the next menu item or parameter. The down arrow button is used to scroll to the previous menu item or parameter.
Plus and Minus Buttons
Back/Menu Button
Enter Button
The plus button is used to increase the value of the displayed parameter.
The minus button is used to decrease the value of the displayed parameter.
The back/menu button is used to go to previous menu or to access the Main Menu
page from the Idle Screen. The enter button is used to advance to the next
sub-menu, to access the selected option or to confirm set parameter value.
www.neptronic.com
Page | – 40 –
Idle Screen
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
When the controller is in operation, the unit displays the following information on the Idle Screen:
Table 8 – Idle Screen Display Description
Setting HumDemand:
Default Current value
Range (* indicates no configuration; display only)
- (min: 0.00%, max: 100.00%)
ControlState:
Current value
- (Off, Normal, LowLimit, HighLimit, NoAirFlow, Interlock)
PowerOutput: State:
Current value Current value
- (min: 0.00%, max: 100.00%)
- (Off, Idle, LineRinse, TankRinse, Filling, Draining, Heating, Boiling, Alarm)
Description/Notes
Displays the current humidity demand value. Displays the current state of the
safety control circuit and whether the circuit has been disconnected due to a
safety switch. Displays the measured power output of the system as a
percentage of the total power.
Displays the current state of operation of the humidifier.
Illustration 44 – Idle Screen Display
Menu Access
· From the Idle Screen, the Main Menu can be accessed by pressing the
Back/Menu button , enabling access to the General menu.
· To view other menu options and perform configurations to the system, press
Enter while on the Idle Screen to advance to the Login Screen, where a valid
password must be entered.
· Four different passwords can be used, each granting access to an additional
menu option depending on the access level assigned to the provided password.
· If a password of higher access is provided, all menu options accessible with
the use of a lower level password will also be unlocked.
Table 9 – Access Levels
Access Level
1
Password None
2
2222
3
3322
4
4433
5
5544
Menu Unlocked General User Service
Installation Integration
Description/Notes Grants access to General menu. Grants access to General and User menus. Grants access to General, User and Service menus. Grants access to General, User, Service and Installation menus. Grants access to General, User, Service, Installation and Integration menus.
Note: To modify or retrieve lost passwords, please contact factory.
www.neptronic.com
Page | – 41 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
A. After accessing the Login Screen, use the + or – buttons to increase or
decrease the value of the number that is highlighted.
B. Use the , buttons to scroll to the next or previous number. C. Press Enter
to confirm the password once completed. If you enter the wrong password, the
SKS4 controller
displays a “Login Failed” message. D. The Back/Menu button may also be used to
return to the Idle Screen display.
Illustration 45 – Login Screen
Menu Navigation and Configuration
A. Use the , buttons to select the desired menu category and press Enter to
advance to the next sub-menu. B. Use the + and – buttons to increase and
decrease values. Use the , buttons to scroll to the next or previous
parameter. Values are saved as soon as a change is made. C. Press the
Back/Menu button to go back one menu. The current menu location is displayed
at the top of the
screen. D. To exit completely, press the Back/Menu button until you return to
the Idle Screen. After 5 minutes of inactivity,
the controller will automatically return to the Idle Screen.
Illustration 46 – Main Menu Page
Note: Available settings and range selections may vary depending on current
configuration. The tables in the following sections display all the possible
selections. The Description/Notes column indicates the conditions required for
the associated setting to appear.
www.neptronic.com
Page | – 42 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Menu – General [Level 1 – No password required] Press the back/menu button from the Idle Screen to access the General menu.
Sub-Menu
Setting AirFlow: SupplyHighLimit:
Default Closed Closed
Status Control
Interlock:
OccupancyState: ControlState: BoilerDemand: PowerOutput: ServiceDue: State:
WtrProbeFail:
Closed
Current value Current value Current value Current value No Current value
None
RoomDemand:
Current value
SupplyHLDemand: Current value
HumDemand: AirFlow:
Current value Closed
SupplyHighLimit: Closed
Interlock:
Closed
Physical IO
BinExtDemand: ControlInput: RoomRH:
0% Current value Current value
SupplyHLRH:
WtrLeakDet: WtrLvlLow: www.neptronic.com
Current value
Ok Current value
Range ( indicates no configuration; display only) (Closed, Open)
- (Closed, Open)
- (Closed, Open) (Occupied, Unoccupied, Vacant, Off) (Off, Normal, LowLimit, HighLimit, NoAirFlow, Interlock) (min: 0.00%, max: 100.00%) (min: 0.00%, max: 100.00%) (No, Yes) (Off, Idle, LineRinse, TankRinse, Filling, Draining, Heating, Boiling, Alarm) * (None, Capacitive, Resistive, Both)
- (min: 0%, max: 100%)
- (min: 0%, max: 100%) (min: 0%, max: 100%) (Closed, Open)
- (Closed, Open)
- (Closed, Open)
- (0%, 100%) (min: 0.00%, max: 100.00%) (min: 0.00%, max: 100.00%)
- (min: 0.00%, max: 100.00%)
- (Ok, Leak) * (Inactive, Active)
Description/Notes
Displays the status of the airflow switch. If Open is displayed, it indicates
that the airflow is not detected by the air pressure switch. Displays the
status of the high limit contact. If Open is displayed, it indicates that the
humidity level has exceeded the setpoint on the high limit humidistat.
Displays the status of the interlock. If Open is displayed, it indicates that
the humidifier is stopped as a result of the interlock safety being open.
Displays the current occupancy state. Displays the current state of the safety
control circuit and whether the circuit has been disconnected due to a safety
switch. Displays the measured humidity demand of the humidifier.
Displays the measured power output of the system as a percentage of the total
power.
Displays whether the humidifier is due for servicing.
Displays the current state of operation of the humidifier.
Displays which one of the water level sensor’s probes is currently not
functioning properly. Displays the room humidity demand value. (Only appears
if ControlProfile is set to an internal control mode or HumCntrlDemandSrc is
set to RoomDemand.) Displays the supply high limit humidity demand value.
(Only appears if ModHLProfile is set to an internal control mode or
HumCntrlHLSrc is set to SupplyHLDemand.) Displays the current humidity demand
value. Displays the status of the airflow switch. If Open is displayed, it
indicates that the airflow is not detected by the air pressure switch.
Displays the status of the high limit contact. If Open is displayed, it
indicates that the humidity level has exceeded the setpoint on the high limit
humidistat. Displays the status of the interlock. If Open is displayed, it
indicates that the humidifier is stopped as a result of the interlock safety
being open. Displays whether there is currently a humidity demand, when an
On/Off humidifier is used. (Only appears when using an On/Off humidifier.)
Displays the current control input reading. Displays the room humidity reading
value. (Only appears if ControlProfile is set to InternAnalog or RoomRHSrc is
set to RoomRH.) Displays the supply high limit humidity reading value. (Only
appears if ModHLProfile is set to InternAnalog or SupplyHLReadingSrc is set to
SupplyHLRH.) Displays whether a water leak has been detected. If Leak is
displayed, it indicates that there is a leak within the water line. Displays
the status of the resistive low water level sensor.
Page | – 43 –
Sub-Menu
Setting WtrLvlHigh: WaterTemp:
Default Current value Current value
Physical IO System
FoamSensor:
NoFoam
ThermalCutout: DrainValve:
Closed Current value
CabinetTemp:
Current value
ContactorsFuse:
PowerOutFdbck: AlarmWarnRelay: ServiceWarnRelay: WtrLvlValve: TankWtrValve:
DrainCoolValve: DrainPump: SteamVlvCtrl:
DrainPump2:
Normal
Current value Current value Current value Current value Current value Current
value Current value Current value
Current value
DrainPump3:
WaterLevel: SteamValveFdbck:
Current value
Current value Current value
SysStatus:
Operational
Vendor: Model: AppVersion: SerialNo: Profile: MCULoad: MemoryLoad:
Runtime:
Neptronic 2.03.20220503 Current value Current value
Current value
ResetReason:
None
www.neptronic.com
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Range ( indicates no configuration; display only) (Inactive, Active) (min: 32.00°F, max: 257.00°F) [min: 0.0°C, max: 125.0°C] Units: C, F
- (NoFoam, Foam)
- (Closed, Open)
- (Off, On)
- (min: -4.00°F, max: 212.00°F) * [min: -20.00°C, max: 100.00°C] Units: C, F
- (Normal, Blown Fuse)
- (min: 0.00%, max: 100.00%) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) (Off, On) * (min: 0.00%, max: 100.00%)
- (Off, On)
- (Off, On)
- (min: 0.0%, max: 120.0%) (min: 0.00%, max: 100.00%) (Operational, Operational Read-Only, Download required, Download in progress, Non-operational, Backup in progress) (min: 0.0%, max: 100.0%) * (min: 0.0%, max: 100.0%)
- (min: 0sec, max: 999999999sec)
- (None, BOR, Pin, POR, Soft, IWDG, WWDG, LPWR, Unknown)
Description/Notes
Displays the status of the resistive high water level sensor.
Displays the temperature of water in the evaporation chamber.
Displays whether foam has been detected within the evaporation chamber. If
Foam is displayed, it indicates that the Anti-Foaming Energy Conservation
(AFEC) system has detected foam. The humidifier will drain for a few minutes
and return to normal operation. Displays the status of the thermal switch
circuit on the PCB. If Open is displayed, it indicates that the wire has been
incorrectly connected to the PCB. Displays the status of the normally open
drain valve. (Only appears for units with weatherproof enclosure.)
Displays the temperature measured inside of the cabinet. (Only appears for
units with the weather proof enclosure.)
Displays the current status of the PCB fuse. If Blown Fuse is displayed, the
fuse must be replaced. Displays the feedback value of power output analog
output. Displays the status of the alarm warning relay. Displays the status of
the service warning relay. Displays the status of the water level sensor
supply valve. Displays the status of the evaporation chamber water supply
valve. Displays the status of the internal drain cooler valve. Displays the
status of the first drain pump. Displays the value of the control signal
coming from the actuated steam valve. Displays the status of the second drain
pump. (Only appears for models having a second drain pump.) Displays the
status of the third drain pump. (Only appears for models having a third drain
pump.) Displays the percentage of water remaining in the evaporation chamber.
Displays the value of the feedback signal coming from the actuated steam
valve.
Displays the current system status.
Displays the name of the vendor of the product. (Always Neptronic) Displays
the humidifier model name. Displays the current application software version.
Displays the serial number of the humidifier. Displays a short profile for the
configured device. Displays the current microcontroller load. Displays the
current memory load. Displays the number of seconds that the system has been
powered on. This value is reset every time the system id shut off. Displays
the reason for the previous system reset: None = No Reset; BOR = Brownout
Reset; Pin = Pin Reset (using PCB Reset Button); POR = Power-on Reset; Soft =
Software Reset; IWDG = Independent Watchdog; WWDG = Windowed Watchdog; LPWR =
Low Power Reset; Unknown = Unknown Cause
Page | – 44 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Menu – User Settings [Level 2 – Requires level 2 (or higher) password in order to access]
Sub-Menu Command Control System
Interface
Setting OccupSchedule:
Default –
RoomDemandLoop
[3]
RoomRHStp:
RoomRHUnocStp:
RoomRHVacStp:
SupplyHLLoop
[1]
SupplyHLStp: UTCOffset: Daylight Savings:
LocalDateTime:
Local Display
[5]
BacklightLvl:
Contrast:
KeypadBuzzer:
Language:
Units:
HRL
[3]
40.0%
30.0% 20.0%
80.0% -300min No YYYY-MM-DD 00:00:00
25% 10% Inactive English Imperial
Temperature:
Current value
TempBias: Humidity: HumidityBias: LockSetpnt:
0.00°F [0.00°C] Current value 0.0%RH
Unlock
Range 00:00 Monday to Sunday Event 1 to Event 6
min: 0.0%, max: 100.0%
min: 0.0%, max: 100.0% min: 0.0%, max: 100.0%
min: 0.0%, max: 100.0% min: -720min, max: 720min No, Yes
min: 0%, max: 100% min: 0%, max: 30% Inactive, Active English, French, Spanish
Metric, Imperial
- (min: -40.0°F, max: 500.0°F) [min: -40.0°C, max: 260.0°C] Units: C, F min: -18.00°F, max: 18.00°F [min: -10.00°C, max: 10.00°C] Units: °C, °F (min: 0.0%, max: 100.0%) min: -10.0%RH, max: 10.0%RH Units: %RH Unlock, Lock
Description/Notes
Create a customized occupancy schedule with up to six events per day.
Only appears if ControlProfile is set to an internal control mode or
HumCntrlDemandSrc is set to RoomDemand. Define the room demand setpoint value
used during Occupied state. (Only appears if RoomRHStptSrc is set to
Internal.) Define the room demand setpoint value used during Unoccupied state.
Define the room demand setpoint value used during Vacant state. Only appears
if ModHLProfile is set to an internal control mode or HumCntrlHLSrc is set to
SupplyHLDemand. Define the supply high limit demand setpoint value. Configure
the value of the UTC offset. Select whether to enable daylight savings or not.
Configure the current date and time.
Select the backlight level of the LCD screen. Select the contrast level of the
LCD screen. Select whether to enable or disable the key press sound. Select
the device language. Select whether to use a metric or imperial system of
units for the local device. For units connected to the HRL24 controller. Only
appears if ControlProfile or RHSrc is set to HRL.
Displays the room temperature value measured by the HRL24 controller.
Set the bias value for the temperature measured by the HRL24 controller.
Displays the room humidity value measured by the HRL24 controller. Set the
bias value for the humidity measured by the HRL24 controller. Displays whether
the setpoint obtained from the HRL24 controller can be modified or not.
www.neptronic.com
Page | – 45 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Menu – Service [Level 3 – Requires level 3 (or higher) password in order to access]
Sub-Menu Status Command
Setting RunTime: OnTime: ServRunTime: ServOnTime:
ManCalibTime:
ServiceDue:
DrainSchedule:
Request:
Default 0.00hr 0.00hr 0.00hr 0.00hr
0.00hr
No
–
None
Range ( indicates no configuration; display only) *
- (Yes, No) 00:00 Monday to Sunday Event 1 to Event 6
None, Reset Alarms, Drain, Reset Counters, Filling, WaterCalib
Description/Notes
Displays the total runtime of the unit. Displays the total operating time of
the unit. Displays the runtime of the unit, since the last servicing. Displays
the operating time of the unit, since the last servicing. Displays the amount
of time that has been elapsed since the last manual calibration of the water
level sensor. (Only appears if WtrAutoCalib is set to Off). Displays whether
the humidifier is due for servicing.
Create a customized draining schedule with up to six events per day.
Perform one of the following actions for the humidifier: reset warning alarms,
initiate a drain cycle, reset service counters, fill the evaporation chamber
or calibrate the water level sensor.
www.neptronic.com
Page | – 46 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Menu – Installation [Level 4 – Requires level 4 (or higher) password in order to access]
Sub-Menu Import User Config Export User Config
Setting
DrainInterval:
Quick Config
IdleTime: BlowdownRate: ServInterval:
ServOperation:
Control
FillMode:
ControlProfile:
ModHLProfile:
RoomDemandLoop
[6]
RoomPropGain: RoomIntgrlTime: RoomDrvtveTime: RoomProbBand:
RoomRHSrc:
RoomRHStptSrc:
SupplyHLLoop
[6]
SupplyHLPropGain: SupplyHLIntgrl: SupplyHLDrvtveTime: SupplyHLProbBand:
SupplyHLReadingSrc:
SupplyHLStpntSrc:
HumidityControl
[5]
HumLowDeadBand:
Default
6hr 24hr 0% 1000hr Allowed
Pulsed
ExternAnalog
Disabled
20.0 0.0sec 0.0sec 5.0% None None
10.0 0.0sec 0.0sec 10.0% None None
Range (* indicates no configuration; display only)
min: 0hr, max: 24hr
min: 0hr, max: 72hr min: 0%, max: 100% min: 1000hr, max: 3000hr
Not Allowed, Allowed
OneShot, Pulsed ExternAnalog, ExternNetwork, InternAnalog, InternNetwork, HRL,
Custom Disabled, ExternAnalog, ExternNetwork, InternAnalog, InternNetwork,
Custom
min: 1.0, max: 200.0 min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min:
1.0%, max: 100.0% None, RoomRH, Network, HRL None, Internal, ControlInput
min: 1.0, max: 200.0 min: 0.0sec, max: 900.0sec min: 0.0sec, max: 60.0sec min:
1.0%, max: 100.0% None, SupplyHLRH, Network None, Internal, ControlInput
Description/Notes
Import all the controller configuration values onto the SD card. A SD card
must be inserted in order to import the values. Export all the controller
configuration values onto the SD card. A SD card must be inserted in order to
export all the values. Set the frequency of the drain cycle. In general, a
more frequent drain cycle is required as the water hardness level rises. The
drain cycle setting does not affect the AFEC system. Set the amount of time
the humidifier can remain in standby mode until an automatic drain cycle is
performed. Define the rate of boiler blowdown or water dilution, in order to
minimize water impurities.
Set the time of operation before the humidifier calls for servicing. Select
whether to enable the unit to continue producing steam, even when it is due
for servicing. When set to Allowed, the unit will continue operating even when
a service alarm is active. Select the water filling method for the fill valve:
When set to OneShot, water will continuously flow. When set to Pulsed, water
will flow in short bursts. Select a preconfigured control mode profile for the
modulating humidity demand. Select the Custom option to configure individual
settings. (Network option only applicable for BACnet models.) Select a
preconfigured control mode profile for the modulating high limit demand.
Select the Custom option to configure individual settings. (Network option
only applicable for BACnet models.) Only appears if ControlProfile is set to
an internal control mode or HumCntrlDemandSrc is set to RoomDemand.
Set the value of the room demand proportional gain.
Set the value of the room demand integral time.
Set the value of the room demand derivative time.
Set the value of the room demand proportional band.
Select the reading source for the room demand. (Network option only applicable
for BACnet models.) Select the room demand setpoint source.
Only appears if ModHLProfile is set to an internal control mode or
HumCntrlHLSrc is set to SupplyHLDemand.
Set the value of the supply high limit demand proportional gain.
Set the value of the supply high limit demand integral time.
Set the value of the supply high limit demand derivative time.
Set the value of the supply high limit demand proportional band.
Select the reading source for the supply high limit demand. (Network option
only applicable for BACnet models.)
Select the supply high limit demand setpoint source.
1.00%
min: 0.00%, max: 100.00%
Set the lower limit deadband value for the humidity demand.
www.neptronic.com
Page | – 47 –
Sub-Menu
Setting
NtwkTimeout:
Control Physical IO
HumCntrlDemandSrc:
HumCntrlHLSrc:
HumCntrlBinDemandSrc:
ControlInput
[6]
Signal: ControlInput: Min: Max: Bias: SignalType:
RoomRH
[7]
Signal: RoomRH: Min: Max: Bias:
AlwaysShow:
SignalType:
SupplyHighLimRH
[7]
Signal:
SupplyHLRH:
Min:
Max:
Bias:
AlwaysShow:
SignalType:
WtrLvlSig: WtrLvlLowSig:
WtrLvlHiSig:
WaterTemp
[3]
WtrTempSig:
www.neptronic.com
Default
900sec
ControlInput None None
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Range (* indicates no configuration; display only)
min: 1sec, max: 900sec
None, ControlInput, RoomDemand, Network None, ControlInput, SupplyHLDemand,
Network None, BinaryExtDemand
Description/Notes
Define the amount of time the humidifier may attempt to connect to the BACnet
or Modbus network before it stops operating due to a communication error.
(Only appears if ControlProfile or ModHLProfile are set to InternNetwork or
ExternNetwork.) Select the humidity control demand source for modulating
humidifiers. (Network option only applicable for BACnet models.) Select the
humidity control high limit source for modulating humidifiers. (Network option
only applicable for BACnet models.) Select the humidity control demand source
for On/Off humidifiers.
0.000V 0.00% 0.00% 100.00% 0.00% 0-10Vdc
- (min: 0.000V, max: 15.000V) * (min: 0.00%, max: 100.00%) min: 0.00%, max: 100.00% min: 0.00%, max: 100.00% min: -10.00%, max: 10.00% 0-10Vdc, 2-10Vdc, 4-20mA, 0-20mA
Displays the value of the control demand analog input signal. Displays the actual value of the control demand analog input. Set the minimum value of the control demand analog input. Set the maximum value of the control demand analog input. Set the bias value for the control demand analog input. Select the signal type for the control demand analog input.
0.000V 0.00% RH 0.00% RH 100.00% RH 0.00% RH
On
0-10Vdc
- (min: 0.000V, max: 15.000V) * (min: 0.00% RH, max: 100.00% RH) min: 0.00% RH, max: 100.00% RH min: 0.00% RH, max: 100.00% RH min: -10.00% RH, max: 10.00% RH
Off, On
0-10Vdc, 2-10Vdc, 4-20mA, 0-20mA
Displays the value of the room humidity analog input signal. Displays the actual value of the room humidity analog input. Set the minimum value of the room humidity analog input. Set the maximum value of the room humidity analog input. Set the bias value for the room humidity analog input. Select whether to always display the RoomRH setting, regardless of the configuration selected in the ControlProfile setting. Select the signal type for the room humidity analog input.
0.000V 0.00% RH 0.00% RH 100.00% RH 0.00% RH On 0-10Vdc 0Hz 0.000V 0.000V
- (min: 0.000V, max: 15.000V) (min: 0.00% RH, max: 100.00% RH) min: 0.00% RH, max: 100.00% RH min: 0.00% RH, max: 100.00% RH min: -10.00% RH, max: 10.00% RH Off, On 0-10Vdc, 2-10Vdc, 4-20mA, 0-20mA (min: 0.000V, max: 30000V) (min: 0.000V, max: 10.000V) (min: 0.000V, max: 10.000V)
Displays the value of the duct or supply high limit humidity analog input
signal. Displays the actual value of the duct or supply high limit humidity
analog input. Set the minimum value of the duct or supply high limit humidity
analog input. Set the maximum value of the duct or supply high limit humidity
analog input. Set the bias value for the duct or supply high limit humidity
analog input. Select whether to always display the SupplyHLRH setting,
regardless of the configuration selected in the ModHLProfile setting. Select
the signal type for the duct or supply high limit humidity analog input.
Displays the value of the water level feedback signal.
Displays the value of the resistive low water level sensor signal.
Displays the value of the resistive high water level sensor signal.
0.000V
- (min: 0.000V, max: 10.000V)
Displays the value of the water temperature sensor signal. Page | – 48 –
Sub-Menu
Setting WaterTemp:
WaterTempBias:
FoamSig:
CabinetTemperature
[3]
CabTempSig:
CabinetTempBias:
Physical IO
System Extended Config
CabinetTemp:
SteamOutFdbck
[5]
Signal: Bias: Min: Max: PowerOutFdbck:
WaterProbe
[4]
LowPosReading: HighPosReading: AbsLowPosReading: AbsHighPosReading:
ResetFactory:
InstallationDate: AlarmBuzzer: SysLogLevel:
WtrLvlReplace:
MinSteamOut:
DrainInterval:
DrainVolume:
MaxOutput:
www.neptronic.com
Default
122.0°F [50.0°C] 0.00°F [0.00°C] 0.000V
0.000V 0.00°F [0.00°C] 32.0°F [0.0°C]
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Range ( indicates no configuration; display only) (min: 32.0°F, max: 257.0°F) [min: 0.0°C, max: 125.0°C] Units: C, F min: -18.00°F, max: 18.00°F [min: -10.00°C, max: 10.00°C] Units: °C, °F (min: 0.000V, max: 10.000V)
- (min: 0.000V, max: 10.000V) min: -18.00°F, max: 18.00°F [min: -10.00°C, max: 10.00°C] Units: °C, °F (min: -4.0°F, max: 212.0°F) [min: -20.0°C, max: 100.0°C] Units: C, F
Description/Notes Displays the temperature of water in the evaporation
chamber.
Set the bias value for the water temperature sensor. Displays the value of the
foam sensor signal. Only appears for units with the weather proof enclosure.
Displays the value of the cabinet interior temperature sensor signal. Set the
bias value for the cabinet interior temperature sensor.
Displays the temperature measured inside of the cabinet.
0.000V 0.000V 0.000V 0.000V 0.00%
- (min: 0.000V, max: 10.000V) min: -1.000V, max: 1.000V min: 0.000V, max: 10.000V min: 0.000V, max: 10.000V * (min: 0.00%, max: 100.00%)
0Hz
- (min: 0Hz, max: 30000Hz)
0Hz
- (min: 0Hz, max: 30000Hz)
0Hz
- (min: 0Hz, max: 30000Hz)
0Hz
- (min: 0Hz, max: 30000Hz)
No
No, Yes
YYYY/MM/DD Disabled Debug
7day
Normal, Disabled None, Emergency, Alert, Critical, Error, Warning, Notice,
Info, Debug
Min: 0day, max: 7day
5%
min: 1%, max: 25%
6hr
min: 0hr, max: 24hr
100%
min: 25%, max: 100%
100%
min: 0%, max: 100%
Displays the value of the power output feedback signal.
Set the bias value for the power output feedback signal.
Set the minimum value of the power output feedback signal.
Set the maximum value of the power output feedback signal.
Displays the value of the power output feedback.
Only appears if WtrAutoCalib is set to Off.
Displays the low position value of the water level sensor.
Displays the high position value of the water level sensor.
Displays the absolute low position value of the water level sensor.
Displays the absolute high position value of the water level sensor. Select
Yes in order to reset the humidifier back to its original factory
configuration settings. WARNING: There is no way to recover previous
configurations once the device has been reset. Set the device installation
date. Select whether to enable or disable the alarm buzzer sound whenever
there is a system warning. This will not affect the Status Display LED. Select
the type of information to be stored on log file. (The humidifier must be
connected to an SD card.) Set the amount of time the humidifier may run using
only the resistive water level probes, if there is an issue with the
capacitive probe, before an alarm message is displayed. Set the minimum steam
production demand value, below which no steam will be produced. Set the
frequency of the drain cycle. In general, a more frequent drain cycle is
required as the water hardness level rises. The drain cycle setting does not
affect the AFEC system. Define the volume of water that is drained from the
chamber, relative to the total capacity of the chamber. Set the maximum steam
output of the humidifier relative to its total capacity. (Only applicable for
modulating humidifiers.)
Page | – 49 –
Sub-Menu
IdleTime:
Setting
IdleTempStpnt:
BlowdownRate: ServInterval: IdleRinseInterval: ActrDeadband:
ServOperation:
Extended Config
Line Rinse: PwrUpDrain: FillMode:
IdleRinseOn:
IdleRinseOff:
WtrAutoCalib: StartupRinse:
Default 24hr 32°F [0°C] 0% 1000hr 3day 5% Allowed
On Off Pulsed
Off
Off
On Off
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Range (* indicates no configuration; display only) min: 0hr, max: 72hr min:
32°F, max: 140°F [min: 0°C, max: 60°C] Units: C, F min: 0%, max: 100% min:
1000hr, max: 3000hr min: 1day, max: 7day min: 0%, max: 25%
Not Allowed, Allowed
Off, On Off, On
OneShot, Pulsed
Off, On
Off, On
Off, On Off, On
Description/Notes
Set the amount of time the humidifier can remain in standby mode until an
automatic drain cycle is performed.
Set the idle temperature setpoint value for the evaporation chamber when there
is no demand.
Define the rate of boiler blowdown or water dilution, in order to minimize
water impurities.
Set the time of operation before the humidifier calls for servicing.
Set the amount of time the humidifier stays in “Idle” or “Off” mode, before
the evaporation chamber undergoes an automatic rinse cycle.
Set the deadband value for the steam actuated valve.
Select whether to enable the unit to continue producing steam, even when it is
due for servicing. When set to Allowed, the unit will continue operating even
when a service alarm is active. Select whether to perform an automatic pipe
line rinse cycle upon each start-up of the humidifier. Select whether to
enable an automatic draining cycle each time the humidifier is powered on.
Select the water filling method for the fill valve: When set to OneShot, water
will continuously flow. When set to Pulsed, water will flow in short bursts.
Select whether to enable automatic rinse cycles while the humidifier is turned
on and remains in “Idle” or stand-by mode. To select the amount of time the
humidifier remains inactive before a rinse cycle is performed, configure the
value of the IdleRinseInterval setting. Select whether to enable automatic
rinse cycles while the humidifier is turned off and remains inactive. To
select the amount of time the humidifier remains inactive before a rinse cycle
is performed, configure the value of the IdleRinseInterval setting. Select
whether to enable or disable the automatic calibration of the water level
sensor. Select whether to perform an automatic tank rinse cycle upon each
startup of the humidifier.
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Page | – 50 –
Menu – Integration [Level 5 – Requires level 5 password in order to access]
Sub-Menu
Setting NtwrkOption:
Default BACnet
Range (* indicates no configuration; display only)
BACnet, Modbus
Device
[4]
DeviceName: Location: Description:
DeviceInstance:
HTTPServer
[1]
HttpServerUnits:
BACnetServer [3] Language: ListMode:
Units:
BACnetMSTP [10]
0153001 (0x000255a9)
Imperial
English Integrator Imperial
Metric, Imperial
English, French, Spanish Integrator, Advanced, Factory Metric, Imperial
Network
MaxMaster:
127
min: 1, max: 127
MaxInfoFrames:
AutoBaud: BaudRate: MAC: RxValid: RxInvalid: RxLost: Tx: TxLost:
BACnetIP
[6]
RxValid: RxInvalid: RxLost: Tx: TxLost:
BACnetIPPort:
1
Yes 38400 001 0 0 0 0 0
0 0 0 0 0
47808
min: 1, max: 100
No, Yes 9600, 19200, 38400, 76800
-
-
-
-
- min: 0, max: 65535
-
-
-
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Description/Notes Select whether to connect to a BACnet MS/TP or Modbus RTU
communication interface on terminal TB2 of the humidifier PCB.
Establish a name for the device. Establish a designated location for the unit.
Establish a brief description for the unit.
Define the device instance value.
Select whether to use a metric or imperial system of units for the HTTP
server. For models connected to the BACnet network. Select the language for
the BACnet server. Select the category of BACnet objects to display. Select
whether to use a metric or imperial system of units for the BACnet server.
Only appears if NtwrkOption is set to BACnet. Configure MaxMaster value to
increase network efficiency when there are less than 127 devices on the
network. For optimal efficiency, set value to the highest MAC address in the
MS/TP network. Configure the maximum number of information messages the
controller may transmit, before it must pass the token to the next controller.
Enable or disable automatic baud rate detection. Select the baud rate for data
transfer. Set the MS/TP network MAC address.
Displays information on the received communication frames for troubleshooting
purposes.
Displays information on the transmitted frames for troubleshooting purposes.
For models connected to BACnet IP.
Displays information on the received communication frames for troubleshooting
purposes.
Displays information on the transmitted frames for troubleshooting purposes.
Set the User Datagram Protocol (UDP) port number. BACnet port number is set by
default.
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Page | – 51 –
Sub-Menu
Setting ModbusServer [1] Units: ModbusRTU1In [4] MAC: Autobaud:
PortConfig:
BaudRate: ModbusTCPIP0In [2] KeepAliveTimeOut:
Listening Port:
SMTP
[7]
SSL:
Network
Port:
ServerAddr: From:
To:
Username: Password:
Notify
[3]
Alarm:
Warning:
AppMsg:
BACnetETH
[5]
RxValid: RxInvalid: RxLost: Tx: TxLost:
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Default
Range (* indicates no configuration; display only)
Imperial
Metric, Imperial
1 Yes
No Parity, 2 Stop Bits
19200
min: 1, max: 247
No, Yes No Parity, 2 Stop Bits Even Parity, 1 Stop bit Odd Parity, 1 Stop bit
9600, 14400, 19200, 38400, 57600
5min 502
min: 1min, max: 1440min min: 0, max: 65535
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Description/Notes
For models connected to Modbus. Select whether to use a metric or imperial
system of units for the Modbus server. Only appears if NtwrkOption is set to
Modbus. Set the Modbus MAC address. Enable or disable automatic baud rate
detection.
Select the Modbus communication port configuration.
Select the baud rate for data transfer. For models connected to Modbus TCP/IP
Set the amount of time the communication stays open before connection is cut
out, when no signal is received from the device. Set the communication port
number. Modbus TCP port number is set by default.
Off
Off, On
25
192.168.100.100 Current value
Current value Current value Current value
25, 587
If turned to On, a secure socket layer will be used to encrypt the
communication between the device and the email server (Port value must be set
to 587 and Username and Password settings must be filled out). If turned to
Off, the default socket will be used (use Port 25 to use server without login
account or Port 587 if login details for email account have been entered). If
set to 25, server to server email transfer is enabled (can only be used if SSL
is set to Off). If set to 587, client to server email transfer is enabled.
Configure the server IP address for the email account.
Set the email address that will be sending the humidifier notification
messages. Set the email address that will be receiving the humidifier
notification messages.
Set the login username for the email account.
Set the login password for the email account.
Off
Off, On
Off
Off, On
Off
Off, On
0
0
0
0
0
If turned to On, then the humidifier alarm messages will be sent to the email
configured in the SMTP sub-menu. If turned to On, then the humidifier warning
messages will be sent to the email configured in the SMTP sub-menu. If turned
to On, then the humidifier event messages will be sent to the email configured
in the SMTP sub-menu. For models connected to BACnet Ethernet.
Displays information on the received communication frames for troubleshooting
purposes.
Displays information on the transmitted frames for troubleshooting purposes.
Page | – 52 –
Sub-Menu Communication
Setting
IPSettings
[10]
DHCP:
RstIPSetting:
StaticAddress: StaticSubnetMask: StaticDefaultGateway: StaticDnsServer: ActualAddress: ActualSubnetMask: ActualDefaultGateway: ActualDnsServer:
ETHSettings
[1]
EthernetMacAdd:
Default
Inactive
No 192.168.1.100 255.255.255.0 192.168.0.100 192.168.10.50 Current value
Current value Current value Current value
Current value
Range (* indicates no configuration; display only)
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Description/Notes
Inactive, Active No, Yes
Select whether to enable Dynamic Host Configuration Protocol (DHCP) to automatically provide an IP address. Select whether to restart the IP module, in order to allow recent parameter modifications to be effective. Configure the static IP address. Configure the static subnet mask. Configure the static default gateway. Configure the static DNS server. Displays the actual IP address. Displays the actual subnet mask. Displays the actual default gateway. Displays the actual DNS server.
Displays the MAC address of the Ethernet interface. (Only applicable if using an Ethernet connection.)
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Page | – 53 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
List of Alarms
Table 10 – List of Alarms
Display AirFlow SupplyHighLimit Interlock
HighLimitCutout ThermalCutout WtrLvlLow WtrLvlHigh WaterTemp CabinetTemp
FoamSensor
Description Indicates that the airflow sensor is open. This fault does not
trigger the alarm contact (no message will be displayed), but will prevent the
humidifier from running. Verify that the signal from the airflow sensor is
present at the controller’s input on the PCB and verify wiring. Indicates that
the high limit item is open. Verify that the signal from the supply high limit
sensor is present at the controller’s input on the PCB and verify wiring.
Indicates that the interlock and the cut-out circuitry are open. This fault
does not trigger the alarm contact (no message will be displayed), but will
prevent the humidifier from running. Verify that the signal from the interlock
sensor is present at the controller’s input on the PCB and verify wiring.
Indicates that the high limit cutout has been activated due to a humidity
reading that exceeds the high limit setpoint. Ensure that the high limit
humidistat is operating correctly and that the distance between the sensor and
the steam dispersion manifold is sufficient (15 ft [4.6 m]). Indicates that
the thermal switch circuit is open. Verify that the wire going to the thermal
switch connection on the PCB is properly connected. Indicates that the
resistive low water level sensor is defective or incorrectly wired. Check
sensor and verify
wiring.
Indicates that the resistive high water level sensor is defective or
incorrectly wired. Check sensor and
verify wiring.
Indicates that the evaporation chamber water temperature sensor is defective
or incorrectly wired. Check
sensor and verify wiring.
Indicates that the cabinet temperature sensor is defective or incorrectly
wired. Check sensor and verify wiring. (Only applicable for humidifiers having
the weatherproof option.)
Indicates that the foam cutout sensor is defective or incorrectly wired. Check
sensor and verify wiring.
ContactorsFuse MemoryCard (Warning) USB Device (Warning) Foam (Warning)
ManWtrCalib (Warning) WaterLevel (Warning)
WaterLevel (Alarm)
FailedPump FillTimeout BlockedPiping HeatTimeout
Overheat
WaterLeak TankBlocked
RefillDelay
NtwkCtrlSt
Indicates that there is an issue with the printed circuit board fuse. Check
the status of the fuse and replace
it if defective.
Indicates that the SD card has been detected, but it is not operating
correctly or is non-functional. Verify the SD card and replace if defective.
Indicates that the USB device has been detected, but it could not be read or
is not operating correctly. Verify the functionality of the USB device and
replace if defective. If Detected is displayed, it indicates that the foam
sensor has detected foam and the humidifier is now draining. Once the drain
cycle has ended, the warning message will disappear.
Indicates that the water level sensor must be manually calibrated. See Manual
Water Level Calibration section on page 56 for details. (Only applicable if
WtrAutoCalib is set to Off.) If Replace is displayed, it indicates that there
a problem with either the capacitive or resistive water level probes. Ensure
that all the water level probes have been wired properly. If the error
persists, the warning message will change into the alarm message described
below. If Defect is displayed, it indicates that the water level sensor is
defective or not working properly. Verify its operation and replace it if
necessary. If the sensor is replaced, the humidifier will need to be turned on
while there is a humidity demand in order to recalibrate the water level
sensor. If NoCalib is displayed, it indicates that the water level sensor is
not calibrated or must be recalibrated. Ensure that WtrAutoCalib is set to On
for automatic calibration. If WtrAutoCalib has been changed to Off, ensure
that the water level sensor has been manually calibrated. Indicates that there
was an error during draining due to a pump failure. Verify that the drain pump
is operating correctly and that it is not being hindered or obstructed.
Indicates that the water level sensor has not reached the desired value within
the programmed delay. Verify and remove any obstructions in the water inlet
line and verify that the shut-off valve is not closed. Indicates that there
was an error during draining due to a blockage in the pipes. Verify and remove
any obstructions in the piping and ensure that the drain outlet is not
clogged. Indicates that the water temperature in the evaporation chamber has
not reached the boiling point within the programmed delay. Verify the
temperature of the supply water. Indicates that the evaporation chamber
temperature sensor has detected a temperature reading greater than or equal to
221°F (105°C). Verify the operation of the water level sensor and ensure that
the water supply piping is not obstructed. Indicates that a water leak has
been detected. Verify the water line for signs of leaks and ensure that all
piping and water connections have been properly installed and secured.
Indicates that there was an error while filling the evaporation chamber due to
a blockage in the pipes. Verify and remove any obstructions in the piping and
ensure that the water inlet is not clogged. Indicates that the evaporation
chamber has not been refilled with more water within the programmed delay
after it has begun evaporating, due to a blockage in the pipes. Verify and
remove any obstructions in the piping and ensure that the water inlet is not
clogged. Indicates that the communication attempt to the BMS server has
exceeded the delay defined by the NtwkTimeout setting. Verify the wiring
between the humidifier and the BACnet or Modbus network and ensure proper
connection. (Only applicable for humidifiers having the BACnet or Modbus
option).
Alarm Reset Automatic Automatic Automatic
Automatic Automatic Automatic Automatic Automatic Automatic Automatic
Automatic Automatic Automatic Automatic Automatic
Manual
Manual
Manual Manual Manual Manual Manual Manual Manual Manual
Manual *
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Page | – 54 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Display HRLState AntiFreeze ServiceDue
Description Indicates that there is a communication error when attempting to connect to the HRL24 controller. Verify the wiring between the humidifier and the HRL24 and ensure that the controller is functioning properly. (Only applicable for humidifiers connected to the HRL24 controller). If Drain is displayed, it indicates that the drain valve is open, and the unit will empty itself to avoid freezing. This ensures that the unit will produce steam normally when it will be switched ON by a demand. Indicates that the due date for servicing the humidifier has arrived. See Service section on page 60 for details.
- Use Reset Alarms function in Request setting (see page 46). ** Use Reset Counters function in Request setting (see page 46).
Alarm Reset Manual Manual Manual **
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Page | – 55 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Manual Water Level Calibration
If the humidifier is not equipped with the pure DI humidifier option and uses ultrapure water, the water level sensor must be manually calibrated to obtain a more accurate sensor reading. To turn off the automatic calibration of the water level sensor, access the WtrAutoCalib setting located in the Extended Config sub-menu of the Installation menu and set its value to Off. Once this is done, the water level sensor will need to be manually calibrated by using the following steps:
1. To view the water level sensor, remove the front access panel.
2. To begin the manual water level calibration process, access the Request settings located in the Command sub-menu of the Service menu, and set its value to WaterCalib.
Step 1.
The water level sensor will then initiate a drain cycle. Wait until it has finished draining. The draining process can be stopped at any time by pressing and holding Enter for 3 seconds.
Step 2.
Verify that no water remains in the water level sensor and press and hold Enter for 3 seconds to proceed. If the water has not been drained completely, open the manual drain valve to remove the remaining water.
Step 3. Step 4.
The water level sensor will then start filling until it reaches the resistive
low probe. The automatic filling process can be stopped at any time by
pressing and holding Enter for 3 seconds.
Once the Low level message appears on the controller, verify that the water
has reached the resistive low water level probe.
· If the water has not reached the resistive low water level probe, use the +
button to resume filling.
· If the water level sensor has been overfilled, open the manual drain valve
to remove the additional water.
· Once the water has reached the resistive low probe, press and hold Enter for
3 seconds to proceed.
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Page | – 56 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Step 5. Step 6.
The water level sensor will then start filling until it reaches the resistive
high probe. The automatic filling process can be stopped at any time by
pressing and holding Enter for 3 seconds.
Once the High level message appears on the controller, verify that the water
has reached the resistive high water level probe.
· If the water has not reached the resistive high water level probe, use the +
button to resume filling.
· If the water level sensor has been overfilled, open the manual drain valve
to remove the additional water.
· Once the water has reached the resistive high probe, press and hold Enter
for 3 seconds to proceed.
3. The manual water level calibration process is now complete.
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Page | – 57 –
Start-up Procedure
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Initial verification and start-up must be carried out by suitably qualified
personnel.
It is strictly recommended to follow this start-up procedure in order to avoid
any anomaly resulting from inaccurate installation of the components.
Initial Verification
Clearance
Ensure that the humidifier cabinet is installed in a location in which the humidifier can be serviced correctly.
2. Verify that the power supply (voltage) conforms to the appliance name plate on
Electrical Supply
the side of the humidifier. Confirm that 24Vac is present between terminals TB4 1&2 on the printed circuit
board.
4. Ensure that water is supplied to the humidifier and that a shutoff valve is placed
outside the humidifier.
5. With the water shutoff valve turned on, check that the drain connections are
Water Supply
connected to the main drain line with sufficient diameter. Ensure that there are
no apparent leaks.
6. Confirm that the drain piping is properly connected with a pitch of at least ¼”
(6.5mm) per foot (300mm).
7. Verify that the steam distributors are properly installed into the ventilation duct.
Clean Steam 8. Verify that the flexible steam hoses and rigid steam supply pipes are shorter
than 16 ft (5 m) in total, are properly sloped and have condensation “S” traps
wherever required.
9. Confirm that raw steam is supplied to the humidifier and that the supply line is
hot upstream the control valve. The pressure must not exceed 15 PSI (103.4
kPa).
Raw Steam 10. Confirm that the shut-off valve located outside the humidifier is closed. With the
Supply
shut-off valve turned on, check for leaks or hissing sounds.
11. When using raw steam supply, verify the type and size of the condensate return
steam trap. The steam trap must be of float type and of sufficient dimension,
according to the capacity.
12. Ensure that the control valve is properly connected to the output control signal of the humidifier.
13. Ensure that the Airflow switch is properly installed and connected to the printed circuit board. If an Airflow switch is not used, verify that a jumper is connected between terminals TB3 1&2.
14. Ensure that the High limit duct humidistat is properly installed and
connected to the printed circuit board. Verify that the setpoint is properly
adjusted. If a High limit duct humidistat is not used, verify that a jumper is
connected between terminals TB3 1&3.
Controls 15. Ensure that the Interlock is properly connected to the printed
circuit board. If the
Interlock is not used, verify that a jumper is connected between terminals TB3
1&4.
16. If a room or duct humidistat is used, verify that it is correctly installed and properly connected to the humidifier. Verify that the setpoints are properly adjusted.
17. Turn the power on using the disconnect switch or circuit breaker.
18. Confirm the control set-up of the humidifier and verify that the setpoints are properly adjusted.
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Page | – 58 –
Start-Up
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
1. Proceed to start-up the humidifier, as follows:
a) Turn on the humidifier by pressing and holding the Power button for 3 seconds. Verify that the controller Status Display LED is blue.
b) Verify that there is a humidity demand displayed on the LCD screen of the humidifier.
Start-up
c) Ensure that the water supply valve connected to the humidifier is turned on
and that water is flowing directly to the humidifier water supply inlet.
Ensure that the water shut off valve is turned off.
d) Verify the water level as water is filling the evaporation chamber by using
the control panel to access the WaterLevel setting located in the Physical IO
sub-menu of the General menu. Ensure that there are no water leaks along the
water line.
e) Once the evaporation chamber has been filled, observe the system for water and steam leaks during several minutes of operation.
2. Check the location of the Airflow switch in the system and its operation by
Safety Test
stopping the fan. With no air movement, the humidifier should automatically
stop.
3. Turn off the humidifier by pressing and holding the Power seconds.
button for 3
4. Conduct a drain cycle by pressing and holding the Drain button for 3
Drain and Reset
seconds. Ensure that the evaporation chamber has been emptied.
5. Once the drain cycle is complete, restart the humidifier by pressing and holding
the Power button for 3 seconds.
6. Reset the Airflow switch if needed.
End 7. The humidifier is now ready for normal operation.
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Page | – 59 –
Service
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
WARNING: Danger of hot water. Drain water before servicing.
The humidifier requires regular periodic service to ensure efficient and
trouble-free running. Regular service involves manually cleaning the
humidifier and the strainer located on the steam line. Generally, frequency of
cleaning can range from two months to once a year, depending on the following
factors:
· Quality of water · Frequency of automatic drain cycles · Demand placed on
the humidifier All SKS4 humidifiers are programmed for 1000 hours of
operation. This is a default factory setting. To view the number of hours the
humidifier has run and the number of service hours, use the control panel to
access the Service Menu (see page 46 for more details).
After 1000 hours of operation have passed, the Status Display LED on the
control panel will turn red, indicating that the humidifier is due for
servicing. Although the humidifier will continue to operate, it is imperative
that service is performed as soon as possible, in order to ensure proper
functionality.
Cleaning the Humidifier
Cleaning the humidifier involves the following steps:
Stage 1 – Drain the Evaporation Chamber Stage 2 – Shut Down the Electrical
Supply Stage 3 – Disassemble the Humidifier Stage 4 – Clean the Components
Stage 5 – Reassemble the Humidifier Stage 6 – Restart the Humidifier
Stage 1 – Drain the Evaporation Chamber
Before commencing the cleaning procedure, ensure that the evaporation chamber
is cool and comfortable enough to handle, as the evaporation chamber and its
contents can be extremely hot and can cause burning. To allow the evaporation
chamber to cool, initiate a drain cycle:
1. Press and hold the Power button for 3 seconds to switch off the
humidifier.
2. Press and hold the Drain button for 3 seconds to initiate a drain cycle
and empty the evaporation chamber.
Stage 2 – Shut Down the Electrical Supply
CAUTION: Risk of electric shock. The electric supply of the humidifier must be
shut down. Disconnect the power at the External Breaker/Fused Disconnect
before commencing servicing. Once the drain cycle is complete, remove the
power supply to the humidifier at the disconnect switch or the breaker.
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Page | – 60 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Stage 3 – Disassemble the Humidifier
1. Remove the painted top cover by manually turning the two thumb screws
located on each side of the humidifier. 2. Remove the second cover made of
stainless steel, by using the wrench found underneath the top cover (supplied)
in order to remove the nuts connected to the stainless steel cover.
3. Remove both scale pans from the humidifier.
Illustration 47 – Removal of Scale Pans
Stage 4 – Clean the Components
1. Clean the scale pans and the evaporation chamber: · Empty out all
accumulated scale build-up from the scale pans and remove the residue that has
accumulated inside the chamber. · To clean out any remaining scale, use a
stiff brush (synthetic filament only) and some vinegar or any weak acid
suitable for cleaning stainless steel.
WARNING: The use of a wire brush or any non-recommended acid will void the
warranty.
· Do not scrape off the walls of the scales pans or the evaporation chamber. ·
Ensure that the water inlet aperture is not blocked. 2. Remove the excess
water using the manual drain valve, in order to clean the scale pan area. 3.
Close the manual drain valve.
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Illustration 48 – Manual Drain Valve
Page | – 61 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Stage 5 – Reassemble the Humidifier
1. Reinstall both scale pans. Ensure that the drain hole remains free from
any obstruction. 2. Close the stainless steel cover using the wrench
(supplied) and ensure that it is tightened properly to prevent
steam loss. 3. Close the painted top cover by turning the four thumb screws.
4. Turn the power back on at the disconnect switch or the breaker.
Stage 6 – Restart the Humidifier
1. Press and hold the Power button for 3 seconds to power on the humidifier.
2. Conduct a performance test by verifying the water level of the evaporation
chamber as it is filled with water. Verify
that there are no leaks.
3. Conduct a drain test by turning off the humidifier using the Power button
and performing a drain cycle using the Drain button .
4. Restart the humidifier to resume normal operation by pressing and holding
the Power button for 3 seconds. 5. To reset the service counters and clear the
alarm warning after servicing:
a. Using the control panel, access the Request setting located in the Command
sub-menu of the Service menu. b. Select the Reset Counters value and press
Enter to reset the service counters. 6. Ensure that the drain cycles are set
for every 6 hours of operation. This is the factory default setting and is
recommended for city water.
· To configure the drain cycle frequency, use the control panel to access the
DrainInterval setting located in the Quick Config or Extended Config sub-menus
of the Installation menu.
After the water boils for 6 hours in the chamber, it is laden with minerals
and solutions. This affects the humidity output and the efficiency of the
humidifier. Diluting the boiling water with a drain cycle will improve the
performance of the humidifier.
Strainer Maintenance
Perform the following steps for strainer maintenance: 1. Turn off the steam
supply coming to the strainer on the steam supply pipe. 2. Unscrew the meshing
cap.
Illustration 49 – Meshing Cap 3. Clean the meshing cap by removing any debris
located inside of it. 4. Reassemble the meshing in the strainer body using the
cap. 5. Reopen the steam supply on the steam supply line.
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Page | – 62 –
Troubleshooting
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Table 11 – Troubleshooting Guide
Problem
Possible Cause
Power is not being supplied to the humidifier.
Humidifier does not operate (Screen turned Off)
The low voltage fuse is open.
Wire harnesses inside the humidifier are not secured properly.
Humidifier does not operate (Screen turned On, Status Display LED: Off)
Humidifier does not produce steam (No demand)
No water inside the evaporation chamber or Humidifier does not stop draining
Humidifier does not drain
The humidifier is not powered on.
No analog signal detected. Air flow is not detected by air pressure switch.
High limit humidistat is open. Interlock contact is open. Control wires are
not properly secured to the terminal blocks. Humidifier is being filled with
water but has not yet reached or does not reach the high limit of the water
level sensor. Humidifier is not being filled with water. Drain valve is
clogged. During a drain or foaming cycle, the water level sensor has sensed
that the water level has not decreased.
Humidifier is always on Foam cycle (FoamSensor setting displays Foam)
Excessive foaming condition inside the evaporation chamber.
Humidifier is operating and the Status Display LED is Red (ServiceDue setting
displays On)
Humidifier does not operate (Screen turned Off, Status Display LED: Blue)
Humidifier is producing steam (Screen turned Off, Status Display LED: Blue)
The humidifier is due for servicing.
The following components can be the cause of this problem: water level sensor,
PC board or LCD display. The display FFC cable is not connected properly. The
LCD display is defective.
Corrective Action Check the main power supply and fuses. Verify the disconnect
switch and the circuit breaker. Check the transformer and the low voltage
fuse. Verify that the low voltage circuit is complete. Check the wires
harnesses and the main PC board. Verify that all connections have been made
properly.
Verify that the Power button has been pressed and held for 3 seconds for
correct activation.
Verify the setting of the control input.
Check the fan operation.
Check the operation of the high limit humidistat. Check the interlock contact.
Verify the connections of the wires to the control terminal blocks. – Verify
that the drain valve is open. – Check if the shutoff valve on the water supply
line is open. – Verify the operation of the fill valve. – Check that the fill
valve strainer and the external strainer are not blocked. Check the drain
valve. Verify that the drain pump, the fill and drain water pipe connections
and the water level sensor chamber are not obstructed.
– Verify the quality of the supply water. – Verify if chemical products were
used to clean the evaporation chamber during maintenance. Rinse the chamber
properly with water. – Check the setting of the drain cycle. Reduce the time
between drain cycles.
Service the humidifier (see Service section on page 60). Use Request setting
in Service menu to reset counters (see page 46).
Call factory for troubleshooting instructions.
Verify that the connections of the FFC cable are properly secured and are on
the correct side. Replace the LCD display.
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Page | – 63 –
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Exploded View and Bill of Material
General
5
4
3 2
6 7 1
Illustration 50 – General Exploded View
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Page | – 64 –
Item 1
Description
Scale pans
2
Heat exchanger 1
3
Heat exchanger 2
4
Evaporation chamber gasket
5
Evaporation chamber cover
6
Heat exchanger flange washer
7
Heat exchanger gasket
Actuated steam control valve
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
Model
SKS4-50-SLP to SKS4-290-SLP SKS4-390-SLP to SKS4-1250-SLP
SKS4-050-SLP SKS4-100-SLP SKS4-130-SLP SKS4-190-SLP SKS4-290-SLP SKS4-390-SLP
SKS4-500-SLP SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP
SKS4-1250-SLP
SKS4-050-SLP to SKS4-130-SLP SKS4-190-SLP and SKS4-290-SLP SKS4-390-SLP and
SKS4-500-SLP SKS4-690-SLP to SKS4-1250-SLP SKS4-050-SLP and SKS4-130-SLP
SKS4-190-SLP and SKS4-290-SLP
SKS4-390-SLP SKS4-500-SLP SKS4-690-SLP SKS4-950-SLP SKS4-1250-SLP SKS4-050-SLP
to SKS4-130-SLP SKS4-190-SLP and SKS4-290-SLP SKS4-390-SLP to SKS4-950-SLP
SKS4-1250-SLP SKS4-050-SLP to SKS4-130-SLP SKS4-190-SLP and SKS4-290-SLP
SKS4-390-SLP to SKS4-1250-SLP SKS4-050-SLP to SKS4-130-SLP SKS4-190-SLP and
SKS4-290-SLP SKS4-390-SLP to SKS4-690-SLP, SKS4-1250-SLP SKS4-950-SLP
Part Number
SPS9000-7R SPS9000-8R
SPS20050 SPS20100 SPS20130 SPS20190 SPS20290 SPS20390 SPS20500 SPS20690
SPS20950 SPS21250A
SPS21250B
SPS6100 SPS6200 SPS6300 SPS6400 SPS9010-12 SPS9020-12 SPS9030-12-390
SPS9030-12-500 SPS9040-12-690 SPS9040-12-950 SPS9050-12 SPS20100-8R
SPS20290-8R SPS20500-8R SPS201250-8R SPS60130 SPS60290 SPS60500 SF SKDB0075BAM
SF SKDC0140BAM
SF SKDD0200BAM
SF SKDE0280BAM
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Page | – 65 –
Plumbing Compartment
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
14 13 12
Item 8 9 10 11
12
13 14
11
8
10
9
Illustration 51 – Plumbing Compartment Exploded View
Description
Drain valve Drain pump Water supply valve (2-way) Water supply valve (3-way)
Water level sensor
Water temperature sensor Foam sensor
Model
All models All models SKS4-390-SLP to SKS4-1250-SLP All models SKS4-050-SLP
SKS4-100-SLP to SKS4-1250-SLP All models All models
Part Number
SP4233-59 SPG4101 SPG4104 SP6008 SW SK4WLTR1-HEAD SW SK4WLTR2-HEAD SW
SK4TEMPSENS-12 SWGAFECPROBE-ASS
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Page | – 66 –
Electrical Compartment
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
15 16 17
18
Item 15 16
17
18
Illustration 52 – Electrical Compartment Exploded View
Description
Display
Model
All models
Printed circuit board Transformer
Disconnect switch
All models
SKS4-050-SLPA to SKS4-290-SLPA SKS4-050-SLPB to SKS4-290-SLPB SKS4-050-SLPC to
SKS4-290-SLPC SKS4-390-SLPA to SKS4-1250-SLPA SKS4-390-SLPB to SKS4-1250-SLPB
SKS4-390-SLPC to SKS4-1250-SLPC
All models
Part Number
SW SKS4DISPLAY-AS
NW SKS4MAINSS SP3380 SP3308
DP10-3103 SP3390 SP3392 SP3389
DP13-3004
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Page | – 67 –
Weather Proof Enclosure
SKS4 Steam to Steam Humidifier
Installation Instructions and User Manual
19 20
Item 19 20 21
21
Illustration 53 – Weather Proof Enclosure Exploded View
Description
Thermostat
Model
All outdoor models
Cooling fan
All outdoor models
Motorized drain valve
All outdoor models
Part Number
NF TRO24-EXT1 SP3001 SP6016
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Page | – 68 –
Notes
400 Lebeau blvd, Montreal, Qc, H4N 1R6, Canada www.neptronic.com
Toll free in North America:
1-800-361-2308 Tel.:
514-333-1433 Fax:
514-333-3163
Customer service fax: 514-333-1091
Monday to Friday: 8:00am to 5:00pm (Eastern time)
References
- Neptronic | Home - Humidifier Distributor & HVAC Products
- Neptronic | Home - Humidifier Distributor & HVAC Products