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SKR Humidifier – kit N 

User Manual 

 

www.neptronic.com

 

 

7

 

5.3. 

Recommendations for steam distribution piping 

Model 

Steam outlet 

Steam dispersion 

tube 

MAXIMUM allowable duct 

static pressure at 

dispersion tube location 

in. water (Pa) 

Qty 

Diameter 

in (mm) 

Length 

in (mm) 

SKR-14 / 25 

7/8" (22) 

9" (229) 

0.5” (125) 

SKR-30 / 40 

1-

3/8” (35) 

14" (356) 

0.5” (125) 

 

IMPORTANT:  RISK  OF  MALFUNCTION.  THE  STATIC  PRESSURE  AT  THE  DISPERSION  TUBE 
LOCATION SHOULD NOT BE GREATER THAN 0.5” (125 Pa) DURING OPERATION. FAILURE TO 
DO SO WILL VOID THE WARRANTY. 

For a higher static pressure, use the Neptronic

 SK300 commercial series humidifier. 

5.4. 

Recommendations for the location of the steam dispersion tube 

 

 

IMPORTANT:

 

Risk of malfunction.  

1.  Do  not  split  the  steam  output  piping  to 

supply more than one duct. 

2.  Do  not  reduce  the  diameter  of  the  steam 

hose or piping.  Hose and piping diameter 
must  be  the  same  as  the  diameter  of  the 
humidifier steam outlet. 

 

 

Provide a 

minimum of 18” (460mm) of straight 

duct

without 

obstructions 

or 

elbows, 

downstream of the dispersion tube. 

 

 

Select  an  accessible  location  in  the  supply  air 
duct. 

 

 

For the 

SKR-14

 & 

25

, use a template and drill a 

1-1/2" (38mm) hole in the supply air duct for the 
installation  of  the  of  7/8"  diameter  dispersion 
tube. 

 

 

For the 

SKR-30

 & 

40

, use a template and drill a 

2"  (51mm)  hole  of  in  the  supply  air  duct  for  the 
installation  of  the  of  1-3/8"  diameter  dispersion 
tube. 

 

 

Secure  the  dispersion  tube  bracket  to  the  duct 
using sheet metal screws (not included). 

 

 

In  a  vertical  duct  installation  the  holes  of  the 
dispersion  pipe  should  be  aligned  with  the  air 
flow (see fig. 8d & 8e below). 

 

 

 

 

 

(Fig. 8d) 

(Fig. 8e) 

 

Alignment of dispersion pipe 

Alignment of dispersion pipe 

 

in a vertical duct 

in a vertical duct

 

 

for the 

SKR-14/25 

for the 

SKR-30/40

 

 

 

(Fig. 8a) 

Horizontal duct with 

a minimum 

height of 8” (200mm) 

 

 

(Fig. 8b) 

Horizontal duct with  

a minimum height of 10” (254mm) 

 

 

(Fig. 8c) 

Mounting of the dispersion tube 

in a vertical duct 

Air flow

Air flow

Min. 8”

(200mm)

4”(100mm)

3”(76mm)

Air flow

Air flow

Air flow

1/3 H

H>=10”

(254mm)

Air flow

L/2

L: M

in 8'’

(200 m

m)

L/2

Air flow

Down to up

Summary of Contents for SKR-14 CASA

Page 1: ...SKR N eng 170426 SKR series Steam Humidifier Kit N Patent Pending Installation instructions user manual READ AND SAVE THESE INSTRUCTIONS...

Page 2: ...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 instruc...

Page 3: ...r supply 8 6 2 Drain connections 9 7 Power supply connections 10 8 Control diagrams 11 8 1 ON OFF Humidifier standard 11 8 2 Modulating Humidifier 12 9 Control panel display 13 10 Description of the c...

Page 4: ...ustable collars to attach the steam hose to the steam outlet 1 female fitting and a braided hose to connect the water supply For modulating humidifier only 1 resistor 500 Ohms 1 2 Humidifier overview...

Page 5: ...Requirements Steam outlet diameter in mm Weight lb kg Voltage V Current A Power KW Empty With water SKR 14 CASA 4 5 2 05 120 12 1 4 7 8 22 22 10 35 16 SKR 25 VILLA 7 5 3 41 240 11 2 5 7 8 22 22 10 35...

Page 6: ...and 8 0 20m above the humidifier The SKR humidifier should be mounted 39 to 47po 1 to 1 2m above floor for the installation of water supply drain piping and electrical connections Fig 4 4 3 Wall moun...

Page 7: ...ifier fig 7b If the humidifier cannot be the lowest point of the piping install a steam trap s S Type at the lowest point s of the steam supply piping fig 7c This trap should have a minimum height of...

Page 8: ...nimum of 18 460mm of straight duct without obstructions or elbows downstream of the dispersion tube Select an accessible location in the supply air duct For the SKR 14 25 use a template and drill a 1...

Page 9: ...0 C 3 8 10mm standard copper supply water connection To facilitate servicing a shut off valve not supplied should be installed in the water supply line close to the humidifier It is recommended to ins...

Page 10: ...d copper evaporation chamber Pan drain 1 2 13mm standard copper Water drain temperature 140 F 60 C Two pipes minimum 1 25mm by others must be inserted over the humidifier outlet pipes fig 10 This will...

Page 11: ...e required by the humidifier is the same as the available power supply Ensure that the size of the wire conductors is appropriate for the current required by the humidifier A dedicated external breake...

Page 12: ...or Building Automation System signal to close on humidity drop below set point Wire airflow switch to close when sensing air flow and open when no air flow is sensed Wire high limit humidistat to clo...

Page 13: ...t to close on drop in humidity and to open when set point is reached Wire external cut out if required to remotely switch off humidifier TB2 TB3 TB4 To fan relay To external alarm relay Pilot Dry cont...

Page 14: ...electric power FILL Indicator yellow O Water supply valve is open O Water supply valve is closed STEAM Indicator green O Humidifier is producing steam at 100 capacity O flashing Modulating humidifier...

Page 15: ...ect the airflow proving switch and the high limit humidistat see fig 12a TB5 Terminal to connect the humidistat or Building Automation System see fig 12a DS1 Dip switches DS1 setting Fig 14b Dip switc...

Page 16: ...DS1 3 Dip switch is not used DS1 4 For 4 20mA input signal set the dip switch to the OFF position and connect the supplied 500 ohm resistor between the and of the terminal block TB6 Note Depending on...

Page 17: ...from control s 12 Description of operation of the SKR Press the POWER push button if the indicator is flashing to start the humidifier POWER indicator will light continuously If the evaporation chamb...

Page 18: ...g down and draining of the evaporation chamber a Press DRAIN push button on the control panel The humidifier will initiate a drain cycle The DRAIN indicator will turn on b The DRAIN indicator is on an...

Page 19: ...warranty 10 Checking the gasket a Check the gasket The gasket should not be cracked The gasket must be replaced a minimum at every second maintenance of the evaporation chamber or after one year of op...

Page 20: ...temperature switch SKR 14 25 30 40 SP 3035 G Water level sensor assembly SKR 14 25 30 40 SW SKRLEV ASSY H Water level sensor tube SKR 14 25 30 40 SP 1025 I Water fill valve SKR 14 25 30 40 SP 6004 J...

Page 21: ...The operation of the humidifier is interrupted Check that the static pressure inside the duct at the steam dispersion tube does not exceed 0 5 W G 125Pa Check that the steam hose is not blocked or ki...

Page 22: ...uation The duct downstream of the dispersion tube is wet The installation of the steam dispersion tube is incorrect The capacity of the humidifier is too high The high limit humidistat is not installe...

Page 23: ...Connect Powered 208 or 240 Vac Mechanical compartment Transformer On Off Push button Drain Push button Drain LED Yellow Fan LED Green Access panel Alarm LED Red Power LED Green Fill LED Yellow Steam...

Page 24: ...owered 208 or 240 Vac Relays 208 or 240Vac Transformer On Off Push button Drain Push button Drain LED Yellow Fan LED Green Access panel Alarm LED Red Power LED Green Fill LED Yellow Steam LED Green TB...

Page 25: ...utton Drain Push button Drain LED Yellow Fan LED Green Access panel Alarm LED Red Power LED Green Fill LED Yellow Steam LED Green SKR Printed circuit board Dip switches TB5 External cut off 24 Vdc TB6...

Page 26: ...Drain LED Yellow Fan LED Green Access panel Alarm LED Red Power LED Green Fill LED Yellow Steam LED Green SKR Printed circuit board Dip switches TB5 External cut off 24 Vdc TB6 ON 1 2 3 4 Control dema...

Page 27: ...SKR Humidifier kit N User Manual www neptronic com 26 Notes...

Page 28: ...u 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 East...

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