Neptronic SKGE3 Series User manual

Gas Fired Humidifier
SKGE3 Series
INSTALLATION INSTRUCTIONS
0359
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SKGE-IOM-170803

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
1
Safety
WHATTODO
IFYOUSMELLGAS!
Do not try to light any appliance.
Do not touch any electrical switch; do not use any telephone in your building.
Immediately call your gas supplier from an off-site telephone.
Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire brigade.
GAS
Before installation, check that the local distribution conditions, nature of gas and pressure, and
the current state adjustment of the appliance are compatible.
Improper installation, adjustment, alteration, service, maintenance or use can cause
carbon monoxide poisoning, explosion, fire, electrical shock or other conditions which
may cause personal injury or property damage.
This appliance MUST be used only in sufficiently ventilated space. Consult instructions before
installation and use of this appliance
Installation and service MUST be performed by a qualified gas installer, service agency, or the
gas supplier.
Ensure that local regulations concerning the provision of gas installations are
followed.
ELECTRICITY
All work concerned with electrical installation MUST only be performed by skilled and qualified
technical personnel (e.g. electrician or technician with appropriate training). The customer is
always responsible for ensuring the suitability of the technical personnel.
Ensure that the local regulations concerning the provision of electrical installations
are followed.
HEALTH &
SAFETY
Neptronic has considered 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 under Health & Safety regulations
in reducing the risk of legionellosis.
To prevent the growth of Legionella, users are required to:
Avoid water temperature that favours the growth of Legionella (20-45˚C).
Avoid water stagnation.
Clean and disinfect the humidification system in accordance to Health & Safety
regulations and enclosed instructions.
Carry out a risk assessment of the water system supplying the humidifier by a
competent person, to ensure the water supply is of an acceptable quality
CORRECT USE
Neptronic® systems and products are designed only for humidification use.
Any other application is not considered as usage for the intended purpose. The manufacturer
cannot be made liable for any damage resulting from incorrect use.
ACCESS
The SKGE3 cabinet keys MUST never be left in the door locks, as this may cause
unauthorized access to live electrical parts. Always store keys centrally with a nominated
responsible person.
WATER
Neptronic® systems are designed to be used with tap, reverse osmosis, de mineralized or
partially softened water. On no account attempt to introduce any other fluids or chemicals into
the system without first consulting Neptronic or its authorized distributor.
Water supply must not exceed the max pressure of 4.8 bar or pressure limits laid out in the
specification and installation must comply with local regulations. Your attention is drawn to
your responsibilities as outlined in the Health & Safety regulations. The control of Legionella
bacteria in water systems and your SKGE3 steam humidifier must be included in the risk
assessment of the water system in your building as a whole. In particular, if the humidifier is
turned off for prolonged periods, you must ensure that the unit is drained and that stagnation
is avoided in pipe work supplying it.
A competent individual or organization must be appointed to carry out water tests. A wide
range of different tests are available to identify the presence of microbes in water, including
total viable count (TVC), temperature-range specific tests and identification of particular
species types including Legionella. It is the responsibility of the person on whom the
statutory responsibility falls to determine the type and frequency of this and all other
controls and preventative measures outlined in this manual.
WARRANTY
Failure to install this humidifier as outlined in this manual may invalidate the warranty.
!
!

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
2
Foreword
Neptronic
Company
Overview
Founded in 1976, we’re a private corporation that designs, manufactures and
distributes products for the HVAC industry. Our product line includes intelligent
controllers, electronic actuators, actuated valves, humidifiers and electric heaters.
Our products are designed and manufactured by over 250 dedicated employees in
our 7,500 m2 (80,000 ft2) state-of-the-art facility located in Montreal, Canada. Using
a vertical integration model, our entire manufacturing chain is under one roof from
software and hardware development, to SMT circuit board assembly, to sheet metal
fabrication, to product testing ensuring that our products are engineered to last.
We currently hold several national and international patents and with our continued
commitment to research and development, we provide innovative products and
technologies for the ever-evolving challenges of the HVAC industry. Exporting over
70% of our sales, we have an exclusive distribution network around the globe that
provides comprehensive solutions to our worldwide customers.
About the Manual
These installation and operation instructions have been developed to facilitate the
installation of the Gas Fired Humidifier.
The strict application of these instructions will ensure the conformity of your
installation and operation as per the manufacturer's recommendations.
The application of these instructions is one of the conditions for the application of the
warranty.
The application of these instructions does not ensure, at any time conformity to
procedures, regulation or local codes, regarding electric installation and connection
to local water supply.
This product has been declared to conform to applicable European safety and
electromagnetic compatibility standards and directives and bear the CE mark. The
certificate of conformity CE is available upon request to the manufacturer.
2017©: All rights reserved. This document cannot be reproduced totally or partially
by any means whether, electronic, mechanical, photocopy, recording or other,
without prior written authorization of Neptronic.
Electricity
All work concerned with electrical installation MUST only be performed by
skilled and qualified technical personnel such as an electrician or a
technician with appropriate training). The customer is always responsible
for ensuring the suitability of the technical personnel.
Please observe the local regulations concerning the provision of electrical
installations.
Correct Use
Neptronic systems and its products are designed only for humidification use. Any
other application is not considered appropriate for the intended purpose. The
manufacturer cannot be made liable for any damage resulting from incorrect use.
General Warranty
This product is subject to the terms and conditions described at
http://www.neptronic.com/Sales-Conditions.aspx.

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
3
Table of Contents
Safety..................................................................................................................................................1
Foreword............................................................................................................................................2
Table of Contents ..............................................................................................................................3
Standards & Certificates ...................................................................................................................4
Technical Specifications...................................................................................................................5
Dimensions & Weights......................................................................................................................6
Handling & Unpacking.....................................................................................................................10
Installation Overview.......................................................................................................................11
Stage 1 –Unit Positioning and Mounting.......................................................................................12
Stage 2 –Steam Distribution Installation.......................................................................................14
Stage 3 –Gas Supply Connection..................................................................................................21
Stage 4 –Water Supply Installation................................................................................................22
Stage 5 –Water Drain Connection..................................................................................................23
Stage 6 –Combustion Air Installation............................................................................................24
Stage 7 –Flue Gas Venting Connection.........................................................................................28
Stage 8 –Electrical Supply and Installation...................................................................................30
Stage 9 –Electrical Control Connections ......................................................................................31
Stage 9 –BACnet®Interface Set-up................................................................................................34
Initial Verification.............................................................................................................................35
Commissioning –Operation Description.......................................................................................37
Operation Display............................................................................................................................38
Status Menu.....................................................................................................................................39
Control Set-up Menu........................................................................................................................40
System Set-up Menu........................................................................................................................42
Alarms Menu....................................................................................................................................44
List of Alarms...................................................................................................................................45
Diagnostics Menu............................................................................................................................46
Com Port Set-up Menu....................................................................................................................47
Personal Notes.................................................................................................................................48
Exploded Views & Parts List...........................................................................................................49
Multiple Modules Composition Table.............................................................................................54
Other related documents:
1. Start-up check list and Combustion Field Adjustment instructions
2. Wiring diagram
3. Service and troubleshooting guide
4. If humidifier is equipped with BACnet®option:
BACnet®communication module user guide.

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
4
Standards & Certificates
Declaration of conformity
CE directives
applied
Appliances burning gaseous fuels directive 90/396/EEC
Electromagnetic Compatibility Directive 89/336/EEC
Standard to
which conformity
is declared
EN 1020 Non domestic gas fired forced convection air heaters for space
heating not exceeding a net input of 300kW, incorporating a fan to assist
transportation of combustion air and/or combustion products.
EN 61000-6-2: Electromagnetic Compatibility - Generic standards- Immunity
for industrial environments
EN 61000-6-4: Electromagnetic Compatibility - Generic standards –Emission
standard for industrial environments.
EN 55011 Conducted & Radiated emissions - Class A;
EN 61000-4-2 Immunity to electrostatic discharges
EN 61000-4-3 Immunity to radiated electromagnetic fields
EN 61000-4-4 Immunity to electrical fast transients
EN 61000-4-5 Immunity to surges
EN 61000-4-6 Immunity to conducted RF disturbances
EN 61000-4-11 Immunity to power main voltage dips shorts and
interruptions
Manufacturer’s
Name & Address
National Environment Products Ltd
400 Bld Lebeau
Montreal, Quebec,
H4N 1R6, Canada
Type of
Equipment
Gas fired Steam humidifier
Model Name and
Series
SKGE3 series
Followed by 0501, 0701, 0801, 1001, 1202, 1502, 1702, 2002, 2503, 2703,
3003, 3504, 3704, 4004 denoting steam capacity and number of module,
and followed by N denoting Natural Gas or P denoting Propane Gas.
Year of
Manufacture
2005
We the undersigned, hereby declare that the equipment specified above
conforms to the above Directive(s) and Standard(s)
Signature:
Name: Bernard Saint-Yves
Position: Quality Manager

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
5
Technical Specifications
General overview - Fig.1
Model
No of
Modules
Steam
capacity
(kg/hr)
Natural Gas
Propane Gas
Current
at 230V
(Amp)
Multi-Steam
header
diameter
(mm)
Input
(kW)
Consumption
(m3/h)
Input
(kW)
Consumption
(m3/h)
SKGE3-0501 N/P
1
50
49
4.6
55
2.1
3.5
76
SKGE3-0701 N/P
1
70
62
5.8
68
2.6
3.5
76
SKGE3-0801 N/P
1
80
69
6.5
75
2.9
3.5
76
SKGE3-1001 N/P
1
100
72
6.8
79
3.0
3.5
76
SKGE3-1202 N/P
2
120
110
10.4
123
4.8
4.5
76
SKGE3-1502 N/P
2
150
123
11.6
136
5.2
4.5
100
SKGE3-1702 N/P
2
170
134
12.6
147
5.7
4.5
100
SKGE3-2002 N/P
2
200
144
13.6
158
6.1
4.5
100
SKGE3-2503 N/P
3
250
203
19.1
222
8.6
6.0
100
SKGE3-2703 N/P
3
270
206
19.4
225
8.7
6.0
100
SKGE3-3003 N/P
3
300
216
20.4
236
9.1
6.0
100
SKGE3 3504 N/P
4
350
275
25.9
301
11.6
7.5
100
SKGE3-3704 N/P
4
370
278
26.2
304
11.8
7.5
100
SKGE3-4004 N/P
4
400
288
27.2
315
12.2
7.5
100
Notes: 1 - Maximum static duct pressure is 1.250 kPa. For higher static duct pressures, consult Neptronic or its authorized
distributor.
2 - Standard humidifier is designed for natural ventilation combustion air, ‘’Ducted Combustion Air’’ option is
available upon request, see stage 6 of installation.

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
6
Dimensions & Weights
General dimensions - Fig. 2
General Dimensions, Weight & Steam Outlets detail
Model
No of
module
No of
Steam
Outlets
Steam
Outlet
Diam.
Dimensions in mm
Weight
(Kg)
A
B
C
D
E
F
G
H
I
Empty
Full of
water
SKGE3-0501 N/P
SKGE3-0701 N/P
SKGE3-0801 N/P
SKGE3-1001 N/P
1
1
Ø76
1372
610
56]
230
460
145
200
SKGE3-1202 N/P
SKGE3-1502 N/P
SKGE3-1702 N/P
SKGE3-2002 N/P
2
2
Ø76
1372
1220
560
230
460
610
920
274
384
SKGE3-2503 N/P
SKGE3-2703 N/P
SKGE3-3003 N/P
3
3
Ø76
1372
1830
560
230
460
610
920
1680
431
600
SKGE3 3504 N/P
SKGE3-3704 N/P
SKGE3-4004 N/P
4
4
Ø76
1372
2440
560
230
460
610
920
1680
2290
576
800
B
A
C
E
F
F
F
D
G
H
I

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
7
Dimensions & Weights
Position & Dimension of connections
Connections position - Fig. 3
(all dimensions in mm)
Model
No of
module
Dimensions in mm
Drain
Outlet
Diam.
Pan
Drain
Diam.
Water
Inlet
Diam.
Gas
Inlet
Diam.
Flue
Outlet
Diam.
SKGE3-0501 N/P
SKGE3-0701 N/P
SKGE3-0801 N/P
SKGE3-1001 N/P
1
Ø19
Ø15
ؽ”
BSPT
Ø1”
BSPT
Ø76
SKGE3-1202 N/P
SKGE3-1502 N/P
SKGE3-1702 N/P
SKGE3-2002 N/P
2
Ø38
Ø15
ؽ”
BSPT
Ø1”
BSPT
Ø100
SKGE3-2503 N/P
SKGE3-2703 N/P
SKGE3-3003 N/P
3
Ø38
Ø15
ؽ”
BSPT
Ø1-½”
BSPT
Ø125
SKGE3 3504 N/P
SKGE3-3704 N/P
SKGE3-4004 N/P
4
Ø38
Ø15
ؽ”
BSPT
Ø1-½”
BSPT
Ø125
Note: Drain outlet, water supply inlet, gas supply inlet and flue outlet are located on the right hand side of the humidifier. Left
hand side location of any of these outlets or inlets is available upon request.
370
560
51
152
436
378
102
1105
1257
1372
25
Electrical
control
Power
supply
Flue
Gas
supply
Front
door
Main
Drain
Pan
drain
127
Water supply
270

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
8
Dimensions & Weights
Option - Ducted combustion air inlet dimension
Ducted combustion air dimensions - Fig. 4
(all dimensions in mm)
Model
No of
modules
No of
Air
inlet
Dimensions in mm
Air
inlet
Diam.
J
K
L
M
N
O
SKGE3-0501 N/P
SKGE3-0701 N/P
SKGE3-0801 N/P
SKGE3-1001 N/P
1
1
Ø51
448
352
-
-
-
-
SKGE3-1202 N/P
SKGE3-1502 N/P
SKGE3-1702 N/P
SKGE3-2002 N/P
2
2
Ø51
448
352
609
962
-
-
SKGE3-2503 N/P
SKGE3-2703 N/P
SKGE3-3003 N/P
3
3
Ø51
448
352
609
962
1571
-
SKGE3 3504 N/P
SKGE3-3704 N/P
SKGE3-4004 N/P
4
4
Ø51
448
352
609
962
1571
2180
J
K
M
L
L
L
N
O
6'’(150)

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
9
Dimensions & Weights
Option - Weather proof enclosure general dimension and weight
Weather proof enclos. 1 to 3 modules configuration –Fig. 5
Weather proof enclose. 4 modules configuration –fig. 6
Weather proof enclosure
Connections position 1 to 3 modules configuration –Fig. 7
(All dimensions in mm)
Weather proof enclosure
Connections positions 4 modules configuration –Fig. 8
(All dimensions in mm)
Model
No of
modules
Dimensions (mm)
Weight (kg)
T
U
V
W
Empty
Full of
water
SKGE3-0501 N/P
SKGE3-0701 N/P
SKGE3-0801 N/P
SKGE3-1001 N/P
1
1867
647
841
611
285
340
SKGE3-1202 N/P
SKGE3-1502 N/P
SKGE3-1702 N/P
SKGE3-2002 N/P
2
1867
1308
841
611
472
582
SKGE3-2503 N/P
SKGE3-2703 N/P
SKGE3-3003 N/P
3
1867
1963
841
611
653
818
SKGE3 3504 N/P
SKGE3-3704 N/P
SKGE3-4004 N/P
4
1867
1308
1616
1234
830
1050
T
U
V
W
W
TV
U
128
302
136
1667
1462
174
DRAIN
WATER SUPPLY
GAZ SUPPLY
STEAM OUTLET
FLUE TERMINAL
POWER SUPPLY
ELECTRICAL
CONTROL
FRONT DOOR
COMBUSTION
AIR INLET
494
136
1462
1667
751
926
1117
FLUE TERMINAL
(X2)
STEAM OUTLET
(X2)
ELECTRICAL
CONTROL
POWER
SUPPLY
COMBUSTION
AIR INLET
DRAIN
WATER SUPPLY
GAS SUPPLY

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
10
Handling & Unpacking
Lifting or handling MUST only be carried out by trained and qualified personnel. Ensure
that the lifting operation has been properly planned, risk assessed and that all equipment
has been checked by a skilled and competent Health & Safety representative and effective
control measures put in place.
It is the customer’s responsibility to ensure that operators are trained in handling heavy
goods and to enforce the relevant lifting regulations.
Any personnel handling or lifting the SKGE3 Steam Humidifier MUST follow the Lifting
Operations and Lifting Equipment Regulations 1998 and Approved Code of Practice L113.
The regulation imposes duties on employers, self-employed persons and persons who
have control, to any extent of lifting equipment.
Refer to Dimensions & Weight section for system dry weights.
Handling and
Lifting
The SKGE3 Steam Humidifier MUST always be handled and lifted with care and must
remain within its original packaging for as long as possible prior to installation
The SKGE3 Steam Humidifier package may be carried using a fork lift from the underside.
Caution must be exercised to ensure balanced load before lifting.
Lifting of SKGE3 Steam Humidifier MUST always be carried out using the appropriate
Neptronic Lifting Bracket (sold separately), see fig. 9.
Lifting sling angle must be greater than 30˚to the horizontal.
Optional weather proof enclosure is provided with four (4) lifting eyelets located at each
corner on the top of the enclosure, see fig. 10.
(Fig. 9) Standard enclosure
(Fig. 10) Option Weather proof enclosure
Unpacking
SKGE3 Steam Humidifier is shipped in a wooden crate.
Ensure packing wooden crate and skid is removed prior to commissioning.
List of
Accessories
Supplied
Standard enclosure
Weather proof enclosure
2 sets of keys.
2 adjustable steam hose collars per
module to connect to connect on the
steam output.
2 adjustable steam hose collars per
internal steam manifold.
Startup check list & Combustion field adjustment instructions.
The present Installation Instructions and User Manual.
Wiring diagram affixed onto the interior of the front access door.
Service and troubleshooting guide.
BACnet® communication module user guide (if BACnet® option is installed).
!
4 lifting eyelets

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
11
Installation Overview
All installation work must comply with local regulations.
All work related to the installation of the SKGE3 Steam Humidifier MUST only be
performed by skilled and qualified technical personnel (e.g. qualified gas installer,
fitters, electricians, plumbers or technicians with appropriate training).
The customer is responsible for ensuring their suitability.
To install the SKGE3 Steam Humidifier and its associated components, no special
tooling is required above that of a fitter’s toolkit.
Installation
Method
Statement
Stage1: Unit Positioning and Mounting
Stage 2: Steam Distribution Installation
Stage 3: Gas Supply Connection
Stage 4: Water Supply Installation
Stage 5: Water Drain Connection
Stage 6: Combustion Air Installation
Stage 7: Flue Gas Venting Connection
Stage 8: Electrical Supply and Installation
Stage 9: Electrical Control Connections
Installation overview - Fig. 11
!
Stage 2
Stage 4
Stage 5
air
Stage 6 Stage 7
Stage 8
Stage 3 Stage 9
or
air
To drain
air
air
air
air
Stage 1

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
12
Stage 1 – Unit Positioning and Mounting
Safety
Considerations
Any installation work MUST be carried out by suitably qualified personnel.
The following considerations must be taken into account before deciding upon the
location for the SKGE3 Steam Humidifier:
Locate the SKGE3 Steam Humidifier in an area clear of combustible
materials, gasoline, and other flammable vapours and liquids.
Do not install in potentially explosive or flammable atmospheres laden with
grain dust, sawdust, or similar airborne materials.
If the appliance is installed in an insulated area, it must be kept free and
clear of insulating materials, as they may be combustible.
If insulation is added after the humidifier is installed, an inspection of the
humidifier area must be carried out to ensure that there is no insulation
coming into contact with the humidifier.
Provide adequate room ventilation air in accordance with local codes and
regulations.
With the exception of ducted combustion air installation, do not locate units
in tightly sealed rooms or small compartments without provision for adequate
air for combustion and room ventilation.
Combustion and ventilation air must be supplied through one permanent
low-level and one permanent high-level opening communicating directly with
the outside air.
Humidifier flue gases must be vented to the outdoors.
Locate the humidifier as near as possible to an outside wall or roof so that
the flue pipe from the humidifier is short and direct.
Locate the SKGE3 Steam Humidifier on a water proof floor or install a drain
pan beneath the humidifier.
Positioning the
Humidifier
The humidifier must be installed to ensure the steam hose length is kept to
the shortest possible length.
For flexible steam hoses: the total steam line length must not exceed 5
meters. For longer distances use insulated hard piping.
For insulated hard piping: the total steam line length must not exceed 15 m.
For longer steam line runs, consult factory.
The humidifier must be located in an area that is fully accessible for
inspection and servicing. Observe the minimum access distances as shown
in figures 12 & 13.
Ambient
Condition &
Altitude
The humidifier location MUST have an ambient temperature of less than 30˚C.
If the above condition is not respected for indoor humidifiers, the warranty of the unit
will be void, as it has not been designed to operate under extreme external
conditions.
The combustion burner of the SKGE3 Steam Humidifier is self-adjusting for any
altitude; the burner will maintain proper combustion and low emission at any altitude.
Steam capacity will be affected by altitudes over 1050m above sea level. Please
refer to the table below to anticipate the ratio of output reduction:
Altitude above sea level (m)
Output reduction (%)
0 to 1050
0
1051 to 1350
2
1351 to 1650
4
1651 to 1950
6
1951 to 2250
8
!

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
13
Stage 1 –Unit Positioning and Mounting
Standard enclosure clearances - Fig. 12
Weather proof enclosure clearances - Fig. 13
Minimum
Clearances
Minimum clearances are :
Standard enclosure
Weather proof enclosure
Top: 0.50m minimum
Both sides: 0.60m minimum
Front: 0.50m minimum
Top: 0.50m minimum
Connection side: 0.60m minimum
Front: 0.8m minimum
Note: Above minimum clearances are indicated for inspection and servicing access.
The SKGE3 Steam Humidifier is designed for 0 clearance to combustible materials,
except on top and front, where minimum clearances to combustible materials is
respectively 500 and 762 mm.
The humidifier is designed to be installed directly on the floor.
Provide a level, solid foundation for the humidifier.
Ensure that the floor beneath the humidifier is water proof to withstand any water
spillage during servicing or if a problem occurs.
The humidifier is provided with adjustable legs in order to ensure proper level.
Roof Curb for
Weather Proof
Enclosure
Weather proof enclosure base dimensions(in mm) - Fig. 14
Ensure that roof curb is structurally built to support the weight of the SKGE3
humidifier.
Roof curb must provide proper level to the humidifier.
The base of the weather proof enclosure is provided with 4 holes Ø12mm to bolt the
SKGE3 humidifier to the roof curb.
500mm
minimum
800mm
minimum
600mm
minimum
0.6m
minimum
0.5m
minimum
0.8m
minimum
4 holes (Ø 12)
to bolt
humidifier to
roof curb.
16
102
610
305
1/2xU
U
U-204

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
14
Stage 2 – Steam Distribution Installation
Fundamental
Design Concepts
1. Maximum steam velocity in a pipe must not exceed 12m/s. Velocities above this
will generate noise.
2. Minimum steam pipe gradient must be 7˚i.e. 125mm rise in 1000mm run.
3. The lowest point of any steam hose or rigid pipe must be the humidifier.
Otherwise, a steam trap (S trap) must be installed at the lowest point of the
steam line. This steam trap must be installed higher than the static pressure of
the system by at least 50mm.
4. Total length of the flexible steam hose must not exceed 5 m or insulated rigid
piping must not exceed 15 m.
5. Whenever possible use rigid copper piping, flexible steam hose can be used for
short runs or for interconnecting between rigid pipe runs. Ensure that there is no
kink in the flexible hose.
When using rigid copper pipe, insulation must be used to diminish condensation
build up.
Min. 7°
Correct Installation
Single module
humidifier with
Multisteam.
Static pressure
+ 50mm
Steam distribution correct installation 1 - Fig. 15a
Min. 7°
Correct Installation
Single module humidifier with 2 S.A.M.E2 manifolds
Static pressure
+ 50mm
Steam distribution correct installation 2 - Fig. 15b
Incorrect installation - Fig. 16
6. Connection pipe sizes between the SKGE3 and the steam distributor in the duct
must be:
76mm up to 120kg/h
108mm up to 240kg/h
133mm up to 255kg/h
7. All humidifier below 100kg/h capacity must use the standard Neptronic®
S.A.M.E2 Steam distribution pipes. Multi-Steam can be offered if shorter
absorption distances are required.
8. All humidifiers above 100kg/h capacity must use the Multi-Steam configuration.
9. All humidifiers above 240kg/h must use 2 Multi-Steam units per Air Handling
Unit (AHU) or air duct, with an equal duty split to each Multi-Steam
!
Incorrect Installation

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
15
Stage 2 –Steam Distribution Installation
Steam Outlet
Configuration for
Weather Proof
Enclosure
Weather proof enclosure single steam outlet - Fig. 17
The SKGE3 humidifier with weather proof enclosure is provided with an integrated
steam manifold with an outlet located on either one of the sides of the humidifier.
By default, the steam outlet will be on the right side of the humidifier (when facing the
control panel). Steam outlet side can be switch to left upon request to factory.
Weather Proof
Enclosure Steam
Outlet Dimension
& Quantity
Model
Steam outlet
Qty
Steam outlet
diameter
SKGE3-
0501, 0701, 0801, 1001
1
Ø76mm
SKGE3
1202, 1502, 1702, 2002
1
Ø108mm
SKGE3
2503, 2703, 3003
1
Ø133mm
SKGE3-
3504, 3704, 4004
2
Ø108mm
Integrated steam manifold
Steam outlet

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
16
Stage 2 –Steam Distribution Installation
Selection of
Steam
Distribution
Manifolds
1. The minimum steam manifold length that can be used with the SKGE3-0501 to
SKGE3-1001 is 900mm. Any manifold below this dimension will have insufficient
outlet spigots to allow proper steam distribution.
2. If duct size is below a width of 900mm, it will be necessary to either fit multiple
pipes or use a Multi-Steam system.
Horizontal Duct
Horizontal duct –2 manifolds - Fig. 18
Horizontal duct –3 manifolds - Fig. 19
Vertical Duct
Vertical duct –2 manifolds - Fig. 20
Vertical duct –3 manifolds - Fig. 21
H
2/5 H
120 mm
120 mm
Ø 78 mm
1/5 H
200 mm
air flow
Air duct
H1/3 H
120 mm
120 mm
Ø 78 mm
1/6 H
250 mm
air flow
Air duct
250 mm
1/2 H
W
min. 600 mm
1/2 H 1/4 H1/4 H
Min. 100 mm
Air duct
W
min. 900 mm
1/3 H 1/3 H
1/6 H 1/6 H
Min. 100 mm
Air duct

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
17
Stage 2 –Steam Distribution Installation
Manifolds Configurations
All humidifiers above 100kg/h capacity must use the Multi-Steam configuration.
Single Module
Humidifier:
SKGE3-0501
Steam distribution manifolds
(S.A.M.E2)
minimum length = 900mm
Ø76mm
Ø15mm
Min. 7° pipe slope
Min. 100mm
Insulated pipe
H
Air Duct
Static pressure
+ 50mm
Min. 2/5 H Min. 100mm
Total length of steam pipes must not exceed 5 meters.
Steam pipe work SKGE3-0501 - Fig. 22
A single Ø76mm feed pipe must be connected to two (2) S.A.M.E2 Steam manifolds
with a suitable reduction at the lowest point to allow a Ø15mm condensate drain from
the main steam supply.
Single Module
Humidifiers:
SKGE3-0701
SKGE3-0801
SKGE3-1001
Min. 7° pipe slope
Ø76mm
Ø15mm Steam distribution manifolds
(S.A.M.E2)
minimum length = 900mm
Min. 100mm
Insulated pipe
H
Air Duct
Static pressure
+ 50mm
Min. 1/3 H Min. 100mm
Total length of steam pipes must not exceed 5 meters.
Steam pipe work SKGE3-0701 to 1001 - Fig. 23
A single Ø76mm feed pipe must be connected to 3 S.A.M.E2 Steam manifolds with a
suitable reduction at the lowest point to allow a Ø15mm condensate drain from the
main steam supply.

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
18
Stage 2 –Steam Distribution Installation
Selection of
Multi-Steam
1. For all Multi-Steam units, use the Neptronic® Humidisoft program to size the
unit.
2. Where two Multi-Steam units are required with duties in excess of 240kg/h,
make your selection using the following rules:
Divide the air volume flow in half.
Divide the AHU / air duct width in half.
Height of the duct must remain at 100% its height.
This will size the Multi-Steam units so that they can be placed side by
side.
3. For installation of Multi-Steam units please refer to Neptronic® Multi-Steam
Installation Instructions.
Horizontal Duct
Multi-Steam in horizontal duct - Fig. 24
Vertical Duct
Multi-Steam in vertical duct - Fig. 25
Ø15mm Static pressure
+ 50mm
Min. 50 mm
Min. 50 mm
Min. 50 mm
Mounting bracket must be level horizontally
Steam supply hose or
rigid pipe to Humidifier
Header must be pitched toward condensate drain
Condensate drain pipe to steam trap
Air duct
Rod, bolt, nut and
washer assembly
Condensate drain pipe to steam trap
Static pressure
+ 50mm
Min. 10º
Steam supply hose or
rigid pipe to Humidifier Header must be pitched toward condensate drain
Air duct
Rod, bolt, nut and
washer assembly
Air flow
Air flow

SKGE3 Gas Fired Humidifier
Installation Instructions and User Manual
19
Stage 2 –Steam Distribution Installation
Multi-Steam Configurations
Single Module
Humidifiers:
SKGE3-0501
SKGE3-0701
SKGE3-0801
SKGE3-1001
Steam pipe work SKGE3-0501 to 1001 - Fig. 26
A single Ø76mm feed pipe must be connected to a single Multi-Steam with a suitable
reduction at the lowest point to allow a Ø15mm condensate drain from the main
steam supply.
2 Modules
Humidifiers:
SKGE3-1202
SKGE3-1502
SKGE3-1702
SKGE3-2002
Steam pipe work SKGE3-1202 to 2002 - Fig. 27
Two Ø76mm steam outlets to a single Ø108mm feed pipe must be connected to a
single Multi-Steam with a suitable reduction at the lowest point to allow a Ø15mm
condensate drain from the main steam supply.
Ø76mm
Ø15mm
Min. 7° pipe slope Min. 50mm
Insulated pipe Air Duct
Static pressure
+ 50mm
Total length of steam conduit should not exceed 5 meters.
Multi-Steam
Min. 50mm
Min. 50mm
min7°pipeslope
Ø76mm Ø76mm
Ø108mm
Ø15mm
Min. 7° pipe slope
Static pressure
+ 50mm
Insulated pipe
Air Duct
Total length of steam conduit should
not exceed 5 meters.