Neptronic SK300, SK302, SK304, SK306, SK310 Installation Manual

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Steam Humidifier

SK300 series

SK300-ENG/071019

Installation instruction & user

manual

READ AND SAVE THESE INSTRUCTIONS

Page 2

SK300 Humidifier

Foreword

1. These installation instructions and operation manual have been developed to facilitate the installation and the

operation of the SK300 series steam humidifier. The strict application of these instructions will ensure the conformity of your installation and operation as per manufacturer's recommendations.

2. The application of these instructions is one of the conditions for the application of the warranty.

3. 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.

4. This product has been declared to conform to applicable Canadian and American safety standards and directives and bear the CSA (c) & (us) mark. The certificate of conformity CSA is available upon request to the manufacturer.

5. © 2007: All right reserved, this document cannot be reproduced totally or partially by any mean whether, electronic, mechanical, photocopy, recording or other, without prior written authorization of National Environmental Products Ltd.

Manufacturer Presentation

National Environmental Products Ltd. (NEP) is the owner of the brand Neptronic®. NEP develops, manufactures and services a complete line of:

• Steam humidifiers,

• Humidistat among the most precise and the most reliable on the market,

• Actuators to regulate air damper or valves,

• Electric heaters,

• Thermostats and other control peripherals used to control HVAC equipment.

For more information about our products, visit our web site at www.neptronic.com

Each Neptronic From the inspiration to realization, innovation has been the standard in design. As the result of this dedication, NEP Ltd. owns several patents, notably the ENERDRIVE system and the AFEC system. Manufacturing is conducted on the premises of our modern 80,000 sq.ft. (7 000m Our quality system is built on the ISO 9001 model.

Our vision '' Customer for Life'' is realized by listening to their needs and by supplying them with products, which exceed their expectations in quality, functionality and durability.

product benefits from over 25 years of experience of our qualified staff.

National Environmental Products Ltd.

Tel. (Toll free): 1 800 361-2308

Tel.: (1) (514) 333-1433 Fax: (1) (514) 333-3163

Fax Customer service: (514) 333-1091

Business hours: from Monday to Friday, 8:00am to 5:00pm (Eastern time)

) facility in Montreal, Canada.

Page 3

SK300 Humidifier

Table of contents

Foreword and Manufacturer Presentation.……………….…….……………………………………………………………….i

1. Presentation..............................................................................................................................................................2

1.1. Overview .................................................................................................................................................................................2

1.2. Definition .................................................................................................................................................................................3

2. Characteristics.........................................................................................................................................................4

2.1. Dimensions & weight...............................................................................................................................................................4

2.2. Output and power consumption...............................................................................................................................................5

3. Mechanical installation............................................................................................................................................6

3.1. General recommendations......................................................................................................................................................6

3.2. Positioning...............................................................................................................................................................................6

3.3. Wall mounting..........................................................................................................................................................................6

4. Steam dispersion system selection and positioning...........................................................................................7

4.1. Steam dispersion system selection.........................................................................................................................................7

4.2. Positionning of S.A.M or S.A.M.E2..........................................................................................................................................9

5. Steam output connection......................................................................................................................................12

5.1. Typical installation.................................................................................................................................................................12

5.2. General recommendations....................................................................................................................................................12

5.3. Installation of “S” traps on the steam line..............................................................................................................................12

5.4. Position of steam output........................................................................................................................................................ 13

5.5. Installation of humidifier with Space Distribution Unit (SDU).................................................................................................14

6. Plumbing connection.............................................................................................................................................15

6.1. Water supply .........................................................................................................................................................................15

6.2 Drain connection ...................................................................................................................................................................16

7. Power supply connections....................................................................................................................................16

8. Low voltage control connections.........................................................................................................................17

8.1. ''ON/OFF'' Humidifier.............................................................................................................................................................17

8.2. Modulating Humidifier............................................................................................................................................................17

8.3. Common Alarm Connections.................................................................................................................................................21

8.4. Controls Placement (steam dispersed into a duct or AHU)...................................................................................................21

9. Front panel display features.................................................................................................................................22

9.1. Description display modes.....................................................................................................................................................23

9.2. Programming.........................................................................................................................................................................25

10. Control p.c. board ..................................................................................................................................................26

10.1. Main p.c. board......................................................................................................................................................................26

10.2. Modulating p.c. board............................................................................................................................................................26

11. Start up procedure.................................................................................................................................................27

12. Service.....................................................................................................................................................................28

12.1. General .................................................................................................................................................................................28

12.2. Evaporation chamber cleaning..............................................................................................................................................28

13. Exploded view & Bill of Material...........................................................................................................................31

13.1. Exploded view.......................................................................................................................................................................31

13.2. Bill of material........................................................................................................................................................................32

14. Trouble shouting guide.........................................................................................................................................34

General condition of Sale & Warranty...……………………………………………………….……………………………….37

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1. Presentation

Thank you to have chosen one of the Neptronic humidifier for its category.

1.1. Overview

1.1.1. List of accessories supplied

• 2 sets of keys.

• 2 adjustable collars for the connection of the steam hose for each steam output.

• 1 female fitting ¾ hydraulic for the drain output of the evaporation chamber.

• 1 female fitting ½ hydraulic for the drain output of the drip pan.

• 1 Installation instruction and operation manual.

1.1.2. Overview of the Humidifier

SK300 Humidifier

User Manual

products. You have purchased the best and the most robust

Heater element connector

Evaporation

chamber

Evaporation chamber Drain valve

Electrical compartment

Access door to

mechanical

compartment

Heater element

Level sensor

chamber

Water supply valve

Control panel

(Illus. 1)

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SK300 Humidifier

User Manual

1.1.3. Options avalaible

The following options are available when purchasing a SK300 humidifier:

• Modulating control humidifier – suffix M (i.e. SK320M)

• Humidifier for system supplied with Deionised water or Reverse Osmosis water, dissolved solids

more than 1 ppm (SF DI-APPLICATION)

• Humidifier for system supplied with Deionised water or Reverse Osmosis water, dissolved solids more than 0.028 ppm (SF ULTRAPURE-DI)

• Internal Drain Cooler (IDC) to temper the drain water to a temperature below 140°F (60°C) (SF DRAINCOOL-INT)

• Space Distribution Unit mounted on humidifier (SDU) or remote installation (SDU-REM)

• Network communication system, BACnet – suffix B (i.e. SK320M-600-3B)

• Stainless steel humidifier cabinet – suffix P (i.e. SK320M-600-3P)

• Dry contact to activate an external fan relay on a call for humidity (SF SK300FANRELAY)

• Fill and drain trap assembly (see section 13. Exploded view item L) without copper elbows for

easy access cleaning – suffix N (i.e. SW TRAPSMA-N)

• Fill and drain trap assembly (see section 13. Exploded view item L) with check valve for high static pressure inside the duct/AHU or multiple humidifiers using a single Multi-Steam – suffix C (i.e. SW TRAPSMA-C)

• Fill and drain trap assembly (see section 13. Exploded view item L) with check valve and an external actuated drain valve for hard water condition – suffix F (i.e. SW TRAPSMA-F)

1.2. Definition

1.2.1. Evaporation chamber

Assembly including the metal cylinder and a cover equipped with one or several heater elements. It is the heart of the humidifier, which produce steam.

1.2.2. SDU (Space Distribution Unit)

Integrated steam distribution unit, optional on certain humidifiers.

1.2.3. Multi-Steam system

Custom made system of steam distribution. This system is designed to allow very short absorption distances (less than 3 feet or 900mm).

1.2.4. S.A.M. (Steam Absorption Manifold)

Steam manifold adapted to air duct size to allow steam absorption in relatively short distance (less than 5 feet or 1500mm).

1.2.5. S.A.M.E2 (Steam Absorption Manifold with 2 Eyelets)

Steam manifold with two eyelets adapted to application with restricted air duct dimensions to allow steam absorption in relatively short distance (less than 5 feet or 1500mm).

Page 6

2. Characteristics

SDU

Space Distribution

Unit (option)

Steam Humidifier

SK300 Humidifier

User Manual

Model

SK302 SK304 SK306 SK310 SK314 SK320 SK330

(Illus. 2)

2.1. Dimensions & weight

Dimensions of the cabinet inch (mm)

A B C D E

23 ½ (597)

28 ½ (724)

18 ½ (470)

(533)

11 ½

(292)

12 ½ (318)

5 ⅝

(140)

6 ⅝

(165)

12 ⅞ (324)

29 ⅛ (737)

35 ⅛ (890)

41 ⅜

(1048)

Weight lb (kg)

Empty

(20)

(30)

Full of

water

(26)

115 (52)

Option SDU

Model

Weight

lb (kg)

SDU-1

20 (9)

SDU-2

25 (11)

SDU-3

45 (20)

SK340 SK360

31 ¼ (794)

(813)

12 ½ (318)

- -

110 (50)

205 (93)

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SK300 Humidifier

User Manual

2.2. Output and power consumption

Steam Consumption

Model

SK302

SK304

SK306

SK310

SK314

SK320

SK330

SK340

SK360

Option:

• On modulating humidifier, the maximum steam output can be programmed with the function ''LOCK ON'' in Program mode.

WARNING (MODULATING HUMIDIFIER)

ACCORDANCE WITH THE ABOVE TABLE, DO NOT TAKE ACCOUNT A POSSIBLE REDUCTION OF STEAM OUTPUT, DUE TO MODULATION.

Capacity

lb/hr (kg/hr)

(2.7)

(5.5)

18 (8)

(14)

(19)

(28)

(41) 120

(56) 180

(82)

Power

(KW)

2 8.5 10

4 17 19 11.5

6 26 30 16.5 13 7.2 10.5 6 1

10 - - 28 - 12 - 10 1

13.5 - - 38 - 16.5 - 13.5 1

20 - - 57 - 25 - 20 2

30 - -

40 - - 120 - 50 - 40 2

60 - - - - 72 - 60 3

240/1

208/1

: MAXIMUM POWER OF THE ELECTRICAL INSTALLATION SHOULD BE IN

Amperage (A)

208/3 480/1 480/3 600/1 600/3

4.5 - 3.5 - 1

8.5 5 7 4 1

- 36 - 30 2

Steam Output

Qty

Diameter

inch (mm)

1 ⅜ (35)

2 ⅛ (54)

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SK300 Humidifier

User Manual

3. Mechanical installation

3.1. General recommendations

• CAUTION: RISK OF ELECTRIC SHOCK. DISCONNECT THE APPLIANCE FROM THE ELECTRIC SUPPLY BEFORE TO PROCEED TO INSTALLATION.

• Location: Plan a location easy to access in order to permit an easy inspection and servicing of the humidifier. Do not install humidifier where failure of the appliance could cause damage to the building structure or to costly equipment. This location should be well ventilated; the ambient temperature should not exceed 85°F (30°C).

• The maximum distance between the humidifier and the ventilation duct should not exceed 16 feet (5 meters) (maximum length of the steam hose).

3.2. Positioning

• The front panel and the right side (electrical compartment) should be accessible in order to permit the servicing. Leave a clearance of at least 48” (1,25m) to the front panel and 24” (0,6m) to the right side.

• The humidifier should be mounted at a minimum of 39” (1m) to 48” (1,2m) above floor level. Leave a clearance of at least 10” (0,25m) under the humidifier for installation of water supply, drain piping and electrical connections.

3.3. Wall mounting

• Use the keyholes located on the back panel of the humidifier.

• Before to proceed to the wall mounting, take off the Evaporation

chamber sub assembly (see section 12, Servicing).

• Check the solidity of the chosen support or wall (bricks, concrete, stud partition wall, etc) on which the humidifier will be mounted.

• Drill holes for the upper anchors (holes with eyelet) into the support or wall as per dimensions specified in the table (illus.4). The holes dimensions (diameter and depth) should by in accordance with the recommendations of the chosen anchors.

• Install then bolt anchors, if required.

• Screw-on the 2 or 3 upper screws (holes with eyelet) of a minimum

diameter of #10 (6mm) (screws are not supplied). Leave a clearance between head screws and wall in order to permit the mounting of the humidifier.

• Use the keyholes located on the back panel of the humidifier.

• Hang on the humidifier to the 2 or 3 screws; it is preferable let the

front door open during this operation. According to the size and weight of the humidifier, you may need the help of a second person to assist you.

• When the humidifier is positioned on the upper screws, tighten the screws to secure the humidifier.

• If applicable, install and secure lower screws.

Model

A B C D E F G

Dimensions inches (mm)

10'’

(0,25 m)

Positioning (Illus. 3)

Front view (Illus. 4)

24'’

(0,60 m)

39 to 48'’ (1 to 1,2 m)

SK302, SK304, SK306

SK310, SK314,

SK320, SK330 SK340, SK360

- 8 (202) 5

- 10 (254) 8 (203) 24 ⅝ (625) 11 (276) 8 (203) 10 (254)

4 (100) 12 (303) 10 ½ (265) 27 ½ (698) 11 (276) 18 ⅜ (468) -

3/16 (165) 19 ¾ (516) - - -

Page 9

4. Steam dispersion system selection and positioning

4.1. Steam dispersion system selection

In order to prevent the accumulation of condensation in air ducts, NEP has designed 4 basic configurations of steam distribution to provide the client with the most economical solution for any particular application.

4.1.1. S.A.M. (steam absorption manifold) Horizontal duct

SK300 Humidifier

User Manual

The SAM is to be installed where absorption distances are short, less than 5 feet (1500mm), and/or low duct temperatures are in effect.

(Illus. 5)

4.1.2. S.A.M.E2 (steam absorption manifold) Horizontal duct

(Illus. 6)

The SAME2 is to be installed where absorption distances are short, less than 5 feet (1500mm) and/or low duct temperatures are in effect. SAME2 are used in applications with restricted duct dimensions.

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SK300 Humidifier

User Manual

4.1.3. S.A.M. or S.A.M.E2 (steam absorption manifold) Vertical duct

i a

S.A.M.

S.A.M.E2.

45°

air

45°

SAM or SAME2 for vertical ducts are used where the absorption distances are normal and the client requires an economical as well as an efficient solution.

(Illus. 7)

4.1.4. Multi-Steam system

(Illus.8)

The Multi-Steam system is to be installed in critical locations in air handling systems, particularly where absorption distances are very short, less than 3 feet (900mm), or low air duct temperatures are in effect.

The Multi-Steam is custom made to the dimensions of duct or AHU.

Instructions to install Multi-Steam system are described in a specific installation instructions manual enclosed with the Multi-Steam system.

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SK300 Humidifier

User Manual

4.2. Positionning of S.A.M or S.A.M.E2

4.2.1. Duct mounting

Steam manifold should be mounted and secured through the side of the air handling unit or duct. Provision should be made for safe accessibility, ideally with an observation light and window. Check that the construction of the duct wall is suitable enough to support the steam pipe for the duration of the installation life. Dimension of hole size in the duct must be as per table below:

Steam manifold Ø Hole size ØA

1 ⅜’’ (35mm) 2’’ (51mm) 2 ⅛’’ (51mm) 3’’ (78mm)

WARNING: Risk of condensing. Ensure that the minimum distance of the end of the manifold is at least 4’’ (102mm) from the top of the duct.

5'’

(120mm)

Minimum distance (Illus. 10)

5'’

(120mm)

(Illus. 9)

ØA

4'’ minimum

(102mm)

4.2.2. Recommendations for SAM distribution pipes

Maximum

Capacity

Model

(lb/hr) (kg/hr) Qty

SK302 SK304 SK306 SK310 SK314 SK320 SK330 SK340 SK360

6 2.7

12 5.5

18 8

30 14

40 19

60 28

90 41

120 56

180 82 3

Note: For higher static pressure, please contact the manufacturer.

Outlet Distribution pipes

Diameter

(mm)

Minimum

length

in.

(mm)

(300)

1 ⅜ (35)

(600)

2 ⅛

(750)

(51)

Maximum

length

in.

(mm)

(600)

(1200)

(1500)

Maximum

static pressure

in. of

water

(Pa)

5 1245

Page 12

10'’ minimum

(250mm)

4.2.3. Placement of steam pipe in horizontal duct

1 ⅜’’ (35mm) diameter pipe

10'’ minimum

air

1/3 H

1 pipe (Illus. 11)

2 ⅛’’ (51mm) diameter pipe

(250mm)

3'’ minimum

(80mm)

SK300 Humidifier

User Manual

8'’

(200mm)

2 pipes (Illus. 12)

6'’ minimum

air

(150mm)

24'’ minimum

(600mm)

1/5 H

8'’

(200mm)

2 pipes (Illus. 13)

air

2/5 H

36'’ minimum

(900mm)

1/2 H

air

1/6 H

10'’

(250mm)

3 pipes (Illus. 14)

10'’

(250mm)

Note: 2 ⅛’’ (51mm) steam pipe must be supported on the end by appropriate duct hanger or strap (supplied by others).

1/3 H

Page 13

4.2.4. Placement of steam pipe in vertical duct

Eyelet orientation

SK300 Humidifier

User Manual

air

3D view (Illus. 15)

1 ⅜’’ (35mm) diameter pipe

10’’ minimum

(250mm)

1/2 W

air

45°

air

45°

S.A.M S.A.M.E2

(Illus. 16)

24’’ minimum

(600mm)

1/2 W

1/4 W1/4 W

1 pipe (Illus. 17)

2 pipes (Illus. 18)

2 ⅛’’ (51mm) diameter pipe

24’’ minimum

(600mm)

1/2 W

2 pipes (Illus. 19)

1/4 W1/4 W

1/6 W 1/6 W

1/3 W 1/3 W

36’’ minimum

(900mm)

3 pipes (Illus. 20)

Page 14

5. Steam output connection

5.1. Typical installation

SK300 Humidifier

User Manual

15 %

Humidifier

Clamps

Flexible hose

Rigid copper pipe

Insulation

Steam distribution manifold

Duct

(Illus. 21)

5.2. General recommendations

Please follow these general rules of installation in order to avoid any static pressure inside distribution pipes and into the humidifier evaporation chamber, and also to avoid any condensation accumulation.

a) The slope of the steam hose (rigid or flexible)

should not be less than 15% (7 horizontal length for 1 vertical length) in order to ensure continuous drainage of condensation back to humidifier or to steam trap.

b) Total length of the steam hose or rigid pipe should

not exceed 16feet (5 meters). Longer runs will result in added condensation losses. Whenever possible, use insulated copper piping. Flexible steam hose should be used for short runs (up to 16ft or 5m) or for interconnecting between the rigid pipe runs.

c) Whenever using rigid copper, these ones should

be insulated to diminish condensation build up.

Incorrect installation

(Illus. 22)

5.3. Installation of “S” traps on the steam line

The lowest point of any steam hose or rigid pipe must be the humidifier. If necessary a steam separator (S trap) should be installed higher than the static pressure of the system by at least 2” (51mm).

15% 15%

Steam outlet

(Illus. 23)

Use "S" separator when ceiling space is limited and you need to create 15% slopes

Use ‘’S’’ separator when

the steam distributor is

lower than the humidifier

steam outlet

(Illus. 24)

15%

(203mm)

8'’

Page 15

Model

Small

Cabinet

5.4. Position of steam output

Dimensions inches (mm)

I J

SK300 Humidifier

User Manual

Small Cabinet

(SK302-304-306)

SK302 SK304 SK306

Medium

Cabinet

SK310 SK314

SK320 SK330

5/16

4 (110)

K L M

9/32

(134)

4 13/16

(122)

(102)

5/8

(143)

5 5/8

(143)

Medium Cabinet

(SK310-314)

Medium Cabinet

(SK320-330)

Large Cabinet

(SK340)

Large

Cabinet

SK340 SK360

N O P Q

(179)

3/16

(132)

5 11/16

(144)

Large Cabinet

(SK360)

(Illus. 25)

Page 16

SK300 Humidifier

User Manual

5.5. Installation of humidifier with Space Distribution Unit (SDU)

• The SDU should be installed in an environment where the air is relatively clean. This will avoid the blower from getting clough with dust.

Without

additional

ventilation

54'’ (1,35 m)

18'’

(0,45 m)

• The humidifier should be mounted such that the SDU fan section is at least 78” (2m) above the floor.

• A minimum clearance of 18” (0.45m) from the ceiling should be allocated to avoid ceiling and wall condensation. If additional ventilation is not present, the fan should have a clearance from the

78'’

(2 m)

ceiling of at least 54” (1.35m). Proper ventilation must be observed to avoid ceiling and wall condensation.

SDU remote installation:

• The SDU can be in a different location from the humidifier (remote SDU). Please follow the piping recommendations (section 5.2).

• Mount the SDU to the wall on brackets

SDU mounted on humidifier (Illus. 26)

(not supplied), do not drill mounting holes thru the cabinet of the SDU.

• Connect the steam hose(s) to the bottom inlet(s) of the SDU to the top of the steam outlet(s) of the humidifier. Secure the hose(s) with the supplied hose clamp.

• Connect the condensate hose to the bottom of the SDU to an open drain.

• Connect the electrical wires from the SDU to the top of the humidifier. Field wiring must conform to local codes.

for SDU2 or SDU3

Without

additional

ventilation

54'’ (1,35 m)

Field piping

(not supplied)

2nd pipe

18'’

(0,45 m)

Field wiring

(by others)

4'’

(0.10m)

The fan of the SDU will operate for a period of four minutes after steam production has stopped to prevent condensation.

78'’

(2 m)

Avoid any obstruction of the ventilation openings on top of the SDU.

Maintenance of the SDU:

• Clean the blower if there is an accumulation of dust.

SDU remote installation (Illus. 27)

Page 17

SK300 Humidifier

User Manual

6. Plumbing connection

The operation of SK300 series humidifier is independent of variable water conditions, with soft or hard water. Therefore, for normal operation, no pre-treatment of water is necessary.

9 ⅛

(232)

9 ¾

(248)

4 ⅛

(105)

4 ⅛

(105)

1 ¾ (44)

Water line

3/8'' hydraulic pipe

Evaporation chamber drain

3/4'' hydraulic pipe

Pan drain

1/2'' hydraulic pipe

Open drain ''P'' Trap

Model

SK302 SK304 SK306 SK310 SK314 SK320

Bottom view (Illus. 28)

Dimensions inches (mm)

A B C D E

6 ½

(165) 2 (51)

7 ¼

(184)

1 ¾ (44)

SK330 SK340 SK360

(179)

1 ¾ (44)

9 ¾

(248)

4 ⅛

(105)

1 ¾ (44)

(Illus. 29)

6.1. Water supply

• Water inlet specifications:

9 Inlet water pressure: 10 to 70 psig (0,7 to 4,8 bars) 9 Maximum temperature: 85°F (30°C) maximum 9 3/8'' standard copper water line connection

• A shut off valve (not supplied) should be installed in the water supply line to the humidifier, close to the humidifier to facilitate servicing.

• It is recommended to install a standard water strainer in the water supply line.

Please follow the steps described below:

• Connect 3/8'' copper pipe to the bottom 3/8'' compression fitting (supplied).

• Finger tighten the swivel top 3/8'' fitting to the male threaded part of the valve.

CAUTION

: RISK OF DAMAGE TO THE VALVE.

DO NOT USE WRENCH TO TIGHEN SWIVEL.

Fill valve (Intern)

Male threaded part of the valve

Swivel top

10'’ minimum

(254 mm)

Base plate of humidifier

Compression fitting

Water line 3/8'’ (10mm) pipe (by others)

(Illus. 30)

Page 18

SK300 Humidifier

User Manual

6.2. Drain connection

• Drain connection specification:

9 Evaporation chamber water drain temperature: 180°F (83°C). 9 Standard hydraulic fitting: 1 connector ¾ (evaporation chamber drain) and 1 connector ½ (Pan drain).

• 2 hydraulic threaded fitting located under the humidifier (see Illus. 29) must be connected to the drain pipe. We recommend the use of standard copper hydraulic pipes ¾ and ½.

• Ensure that the drain pipe dimension is sufficient, especially if more than one humidifier is evacuating into the same drain line.

7. Power supply connections

• CAUTION BEFORE TO PROCEED TO THE CONNECTION.

• WARNING: voltage terminal block designated 1, 2 and 3.

• The wiring to the Humidifier should be done by a qualified electrician, and conforming to the procedure, regulation and local codes.

• Use only coppers conductors.

• An external over current protection and disconnect circuit breaker should be installed on the supply adjacent to

the humidifier.

• A knock out (not supply) should be installed at the bottom of the electrical compartment of the humidifier for strain relief of the supply cable.

• Ensure that the size of the wire conductors is appropriate for the current supplied.

• Ensure that each terminal connection is properly secured.

• The ground conductor should be equipped with ring terminal and should be connected directly to the electrical

panel on the indicated location.

: RISK OF ELECTRIC CHOC. DISCONNECT THE HUMIDIFIER FROM THE ELECTRIC SUPPLY

RISK OF FIRE. Do not interchange the power terminal block designated L1, L2 and L3 with Low

1 Phase Connection

3 Phases Connection

PHASE 1

PHASE 2

PHASE 1

PHASE 2

L1 L2

GND

(Illus. 31)

L1 L2 L3

GND

PHASE 3

(Illus. 32)

Page 19

8. Low voltage control connections

8.1. ''ON/OFF'' Humidifier

SK300 Humidifier

User Manual

12789

Humidistat

5 Vdc

High voltage power

terminal block

Low voltage control terminal block

(Illus. 33)

8.2. Modulating Humidifier

8.2.1. Humidity control by humidistat (external mode)

Connection to HDM or HRM humidistat.

High

limit

5 Vdc

Pressure Differential switch

L1 L2 L3

High voltage power

terminal block

Low voltage control terminal block

5 Vdc

4321

High limit humidistat

(Illus. 34)

432F

875

Pressure Differential switch

humidistat

com

24 VAC

%RH

MOD

Set point

Page 20

SK300 Humidifier

User Manual

8.2.2. Humidity control by humidifier (internal mode)

Humidity controlled by humidifier, using HRM-X or HDM-X as space sensor.

SK300

432F

HRM-X

HDM-X

VAV system with humidity controlled by humidifier, using HDM-X as Hi limit duct sensor and HRM-X or HDM-X as space sensor.

875

To Term. #3 To Term. #F To Term. #6

(Illus. 35)

COMMON

24 VAC OR VDC

0-10 VDC OUTPUT

SK300

432F

HDM-X

HRM-X

875

To Term. #3 To Term. #F To Term. #4

COMMON

24 VAC OR VDC

0-10 VDC OUTPUT

HDM-X

Note: when HDM-X is used as Hi limit Duct sensor, control signal jumper should be placed on 0-10 Vdc on Modulating PCB (see section 8.2.4 of

COMMON

24 VAC OR VDC

0-10 VDC OUTPUT

1 2 3

To Term. #3 To Term. #F

To Term. #6

installation instructions)

(Illus. 36)

Page 21

SK300 Humidifier

8.2.3. Humidity Signals (internal mode)

Terminal Block Modulating Printed Circuit Board

Humidity signal 0-10 Vdc

PCB970819

REV. C

User Manual

Extra jumper

High limit

Humidistat

High limit

Humidistat

432F

875

Pressure Differential Switch

5 Vdc

(Illus. 37)

432F

875

Pressure Differential Switch

5 Vdc

(Illus. 38)

0-10 Vcc

2-10 Vcc

CONTROL INPUT

4-20mA 0-10V 2-10V

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

Humidity signal 2-10 Vdc

CONTROL INPUT

4-20mA 0-10V 2-10V

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

Humidity signal 4-20 mA

(Illus. 40)

PCB970819

REV. C

(Illus. 41)

PCB970819

REV. C

Jumper on

0-10V

Extra jumper

Jumper on

2-10V

High limit

Humidistat

5 Vdc

432F

875

Pressure Differential Switch

(Illus. 39)

4-20 mA

CONTROL INPUT

4-20mA 0-10V 2-10V

Jumpers on

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

(Illus. 42)

4-20mA & 2-10V

Page 22

SK300 Humidifier

8.2.4. Control Signals

Terminal Block Modulating Printed Circuit Board

Control signal 0-10 Vdc

PCB970819

REV. C

User Manual

Extra jumper

High limit

Humidistat

High limit

Humidistat

432F

875

Pressure Differential Switch

5 Vdc

(Illus. 43)

432F

875

Pressure Differential Switch

5 Vdc

(Illus. 44)

0-10 Vcc

2-10 Vcc

CONTROL INPUT

4-20mA 0-10V 2-10V

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

Control signal 2-10 Vdc

CONTROL INPUT

4-20mA 0-10V 2-10V

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

Control signal 4-20 mA

(Illus. 46)

PCB970819

REV. C

(Illus. 47)

PCB970819

REV. C

Jumper on

0-10V

Extra jumper

Jumper on

2-10V

High limit

Humidistat

5 Vdc

432F

875

Pressure Differential Switch

(Illus. 45)

4-20 mA

CONTROL INPUT

4-20mA 0-10V 2-10V

Jumpers on

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

(Illus. 48)

4-20mA & 2-10V

Page 23

SK300 Humidifier

User Manual

8.3. Common Alarm Connections

A volt free contact is provided in the form of both a normally open and normally closed contact that will switch in the event of an alarm on the SK300 humidifier.

• Wherever possible it is recommended to use the normally closed contact. This contact will open in the event of a humidifier fault.

• These contacts should be used to switch a low voltage, ideally 24V, with a switching current of no more than 3 Amps.

432F

875

Common

Normally Open

Normally Closed

(Illus. 49)

8.4. Controls Placement (steam dispersed into a duct or AHU)

Typical humidifier control system should include along with the humidifier:

• A wall or return duct humidistat

• A high limit duct humidistat,

• An air proving switch.

Placement of these devices is critical to proper operation of the overall system.

• The return duct humidistat must always be located before any outside air intake, in order to ensure accurate sensing of the air from the humidified space.

• Alternatively a room humidistat can be used. The room humidistat should be located on an inside wall or column. It should not be be near any discharge air from supply ducts or sources of heat or cold.

• The airflow switch must be positioned to accurately open on a loss of air flow, to prevent the humidifier from running when there is no air to absorb humidity.

• The high limit humidistat must be positioned far enough - 6’ minimum (1.8m) - downstream of the steam dispersion manifold(s) to prevent it from getting wet, but still allows it to accurately prevent overhumidification of the duct that could result in condensation.

6' minimum

(1.8m)

i a

Return HDM humidistat

Or room HRM humidistat

Air flow switch

(Illus. 50)

Steam dispersion

manifold

High limit HDM for

VAV application only

High limit humidistat

Page 24

9. Front panel display features

Alphanumeric Display: Indicates all operation parameters and the error messages

(see section 14 – Trouble shooting).

SK300 Humidifier

User Manual

Push button



1 2

5 6

(Illus. 51)



''POWER'' indicator

ÑOÒ

O The humidifier is disconnected from the power supply.

"CHECK" indicator

ÑOÒ

blinking

"FILL" indicator

"STEAM" indicator

Switch "AUTO/OFF/DRAIN"

Indicator "DRAIN"

O No abnormal conditions of operation.

ÑOÒ Indication that the water supply (fill) valve is open.

O Indication that the water supply (fill) valve is closed.

ÑOÒ

blinking

O There is no steam being produced.

AUTO

OFF

DRAIN

ÑOÒ

O Drain valve is closed.

,  and 

M button: Used to access into program mode.

Up and Down button: Used to increase or decrease the controlled parameters of the humidifier.

The humidifier is powered by electricity and the switch is at the AUTO position.

The "CHECK" indication is normally off. It will go on as a warning against abnormal conditions of operation. For details consult the Alphanumeric Display (see section 9.1.3 Diagnostic mode). Maintenance is required. The Running hours have exceeded the Service hours. (see section 12 – Service).

ON/OFF model, the STEAM indicator lights when the contactor is closed and steam is being generated. Modulating model, the STEAM indicator blinks ON and OFF in proportion to the percentage of steam output the humidifier is generating. (The proportion is displayed on the alphanumeric display (1)). For 100% the indicator will be lit with no blink.

Position AUTO (I): Humidifier will generate steam based on demand from the humidistat.

Position OFF (O): Humidifier will shut off.

Position DRAIN: Humidifier will stop operating and the evaporation chamber will drain the water out. This will be done tipically at regular service.

Drain valve is opened, whether as a result of an automatic drain cycle or because the front panel switch is manually set to DRAIN.

Page 25

SK300 Humidifier

User Manual

9.1. Description display modes

9.1.1. ''OFF'' Mode

When the rocker switch is in the ''OFF'' position, the display shows the model of the humidifier and the program version number.

NEP 3.3

SK310M

(Illus. 52)

9.1.2. Scroll Mode

When the rocker switch is in the auto position, the display scrolls the following information every 6 seconds:

Display Description Comment

RH 25%

DCT 68%

lb/hr

ALARM

LEVEL

CONTROL

LEVEL

Display Space and Duct Relative Humidity readings.

Quantity of steam produced by the humidifier

Low water level.

Water level is controlled The water supply valve is activated below this level.

Only on modulating humidifiers (suffix M). If no High limit Duct sensor is installed second line is left blank

I.e.: The actual output of the humidifier at that moment is 30 lb/hr.

Below this water level, the humidifier shuts off and the water supply valve is activated until sufficient level is reached.

HIGH

Water at maximum level. The water supply valve is automatically deactivated.

LEVEL

Page 26

SK300 Humidifier

9.1.3. Diagnostic mode

When the following conditions occur, the diagnostic messages override the scrolling information:

Display Description Comment

Modulating humidifier: No analog signal to the humidifier.

DEMAND

No demand

On/Off humidifier: Humidity level has exceeded the set point of the humidistat or humidity level has exceeded the set point on the high limit humidistat or airflow is not detected by the air pressure switch.

User Manual

SAFETY

OPEN

DRAIN

CYCLE

CONTACT

DELAY

OVER

HEATED

PROBE

DEFECTED

LEVEL

FOAMING

CYCLE

Humidity level has exceeded the set point on the high

Safety open

Drain cycle The humidifier is in the automatic drain mode.

Contact delay

Overheated

Defected probe

No water Water has not reached the level probe

Drain foam

limit humidistat or airflow is not detected by the air pressure switch (modulating humidifier only).

15 second delay for the power contactor to be activated.

The temperature inside the container has exceeded the boiling temperature. The humidifier has automatically shut off.

The water level sensor is not operational. The humidifier has automatically shut off.

AFEC (Anti Foam Energy Conservation) detects foam. The humidifier drains for a few minutes and returns to normal operation.

DRN/PROB

BLOCK

Verify

RH Sens

Verify

DCT Sens

Drain or probe block

Verify RH sensor

Verify Duct sensor

The humidifier drains but the water level does not decrease, the humidifier has automatically shut off.

Signal from either HRM-X or HDM-X used as space sensor is lower than 0.49 Vdc to terminal # 6 of humidifier. There might be a connection problem or a defective sensor.

Signal from HDM-X used as Hi limit duct sensor is lower than 0.49 Vdc to terminal # 4 of humidifier. There might be a connection problem or a defective sensor.

Page 27

SK300 Humidifier

User Manual

9.2. Programming

To enter into programming mode, please push button at any time, to advance the program function to the next programming step in the menu push the same button twice.

Unless other instructions, you can make a selection by using

Step Display Description Comment

Set point RH origin

Out: Output set point to HRM or HDM.

Int: Internal. Value : from 00 to 100%

Default: Out 30%

Set point VAV allows Hi limit Duct humidity control

OFF: Duct humidity control disable. 65%: High limit Duct humidity set point value.

Default: OFF

Prop Band allows the set up of proportional band.

From 3 to 9%

Default: 3% Drain frequency.

From 1 to 24 hours

Default: 4 Hrs

optional

SETPOINT

OUT 30%

SETPOINT VAV OFF

PROPBAND

DRAIN

8 HRS

& buttons on control panel.

To enable set point to humidifier display

• Press the will appear.

• Press and hold the TEST button located on Main Pc board inside electrical compartment for 10 seconds.

• Release the TEST button then press the RESET button on the same main pc board. Set point is now displayed on the humidifier display.

If Output is selected, the set point is sent from the humidifier to the humidistat HRM or HDM. If HRM-X or HDM-X is connected with humidifier, please select Internal, this will allow you to set up RH set point directly from Humidifier. To switch between Output and Internal Set point:

Press and hold the TEST button located on Main Pc board

inside electrical compartment until the change of the value. If Set point VAV is disabling, no humidity signal from the VAV Duct will be considered. If a Set point VAV value is set, the humidity output will be controlled by both space and High limit duct humidity signal. To allow Set point VAV value: Press and hold the TEST button located on Main Pc board inside electrical compartment until OFF is disappeared.

You can then select the VAV Set point value desired by using

buttons on control panel.

Note: This Step will appear only if Internal has been selected at step 01 Proportional band can be set from 3% to 9% of the humidity set points values (Space and High limit duct).

Select the appropriate value by using panel. Note: This Step will appear only if Internal has been selected at step 01

Choose the initiation of a drain cycle for 1 to 24 hours. In general, harder the water is, more often the drain cycle should be. Drain cycle setting does not affect the AFEC system.

button to reach step 5, the RUNNING message

& buttons on control

Note: Any changes made in the Program Mode are saved into a non-volatile memory.

RUNNING

0645HRS

SERVICE 1000HRS

LOCK ON 80% PWR

When the humidifier is anywhere in the Menu Driven Program Mode, the normal operation of the humidifier is halted.

To resume normal operation, exit the menu program mode by pressing the (This happens after step 7)

Number of running hours

Information only, no possible set up.

Hour span between servicing.

From 400 to 1500 hours.

Default: 1000 Hrs

Output Span.

From 00 to 100%.

Default: 100%

The humidifier has operated 645 hours since the last service.

After service, press simultaneously to reset the number of hours of operation to zero. This procedure will stop the CHECK indicator from flashing.

You can set the number of hours of operation before the humidifier will call for service (blinking of CHECK light every 4 seconds) from 400 to 1500 hours. In general, harder the water is, lower the number of hours of operation before service should be.

This option is available only on modulating model. i.e.: In this case, the humidifier will deliver 80% of its maximum rated output when at full demand.

button until the alphanumeric display is clear.

& buttons for 15 seconds

Page 28

SK300 Humidifier

User Manual

10. Control p.c. board

• The Printed circuit board designated ''PCB970819" is common to all SK300 series humidifier, ON/OFF or modulating, this pc board is equipped with an advanced microprocessor which controls all the humidifier functions.

• The Printed circuit board which is directly connected onto the main pc board is installed only on modulating model (suffix M).

10.1. Main p.c. board

• There are 3 water level L.E.D.’s in the upper right hand side. They indicate the relative water height as sensed by the water level sensor.

o If HI is illuminated: water supply valve shuts off, o If LO is illuminated: An evaporation chamber

filling is ordered, water supply valve opens.

o If LA is illuminated: No water is detected by the

water level sensor, the power to the elements is shot off.

• The 3 status L.E.D.’s at the center left side operate as follows: o FILL indicates that the water supply valve is

feeding water.

o DRAIN indicates the drain valve empties the

container.

o CONT indicates that power is supplied to the

elements and the humidifier is producing steam.

• TEST button should be used when commissioning the humidifier; this will initiate a preprogrammed start-up cycle. The start up cycle cleans the supply water and the evaporation chamber (see section 11 – start-up). This button enable also the set point control of the humidistat to humidifier display (see section 9.2 –Programming) (this is available only on Modulating model).

• RESET button enable the bypass of start up

sequence.

CONTROL INPUT

4-20mA 0-10V 2-10V

HUMIDITY INPUT

4-20mA 2-10V 0-10V

TOP PCB MODULATING

(Illus. 53)

PCB970819

REV. C

10.2. Modulating p.c. board

• The 3 jumpers at the center of the p.c. board (Control Input) are used for proper selection of the incoming control signal. See section 8.2.4 - Control signals.

• The 3 jumpers at the bottom of the p.c. board (Humidity Input) are used for proper selection of the incoming humidity signal. See section 8.2.3 – Humidity signals.

Page 29

SK300 Humidifier

User Manual

11. Start up procedure

We recommend to strictly following this start-up procedure in order to avoid any anomaly resulting from wrong cleaning of the components. In case of problem or discrepancy see section 14 – Trouble shouting guide.

1. Make sure that mechanical, electric and plumbing connection are done and secured.

2. Make sure that low voltage control circuit is done and correct.

3. Turn on the water shut off valve (outside of the humidifier) and check that the drain connections are connected to the main drain line of sufficient diameter.

4. Turn on the power to the humidifier from the circuit breaker disconnect. The POWER indicator should go on.

5. Push the TEST button located on the main pc board. This pc board is located in the electrical compartment.

6. This will start up a pre-programmed start-up cycle. This start-up cycle will test functions of the humidifier and will flush out any dirt in the humidifier and supply lines. This cycle will last about 1 hour.

Note: a) the front panel rocker switch will not affect the performance of the start-up cycle. b) In the case of modulating humidifier, there must be a demand signal of at least 50% for the start-up cycle to operate correctly. c) To bypass at any time the start-up cycle and to proceed directly into normal operation, press the RESET button located on the main pc board.

7. The front panel rocker switch may be left in the AUTO position during the start-up cycle. This will result in normal operation of the humidifier as soon as the start-up cycle is finished.

8. Your humidifier is now fully operational.

Page 30

12. Service

12.1. General

• The humidifier is set to give service demand on the alphanumeric display and on the CHECK light after is

has reached the service hours setting (see section 9.2- Programming).

• The routine service is a cleaning of the evaporation chamber.

• We recommend setting the service demand depending on the water quality, the frequency of automatic

drain cycles and the demand placed on the humidifier.

• The manual cleaning frequency can be from every 2 months to once a year.

12.2. Evaporation chamber cleaning

WARNING: RISK OF BURN. THE EVAPORATION CHAMBER AND ITS CONTENT CAN BE EXTREMELY HOT, CHECK TEMPERATURE BEFORE HANDLING.

1. Cool down evaporation chamber

• Set the front panel switch ''AUTO/OFF/DRAIN'' to DRAIN. The humidifier will command a drain cycle.

• Ensure that the evaporation chamber is completely empty. When it is empty, set the front panel switch

''AUTO/OFF/DRAIN'' to AUTO, the evaporation chamber will be fill with cool water; the FILL light will be illuminated.

• As soon as the evaporation chamber is full of cool water, the FILL light will extinguish, Set the front panel switch ''AUTO/OFF/DRAIN'' to DRAIN again.

• At the end of this drain cycle, check the temperature of the evaporation chamber, to do so, open the front door of the humidifier and touch the evaporation chamber with the back of your hand, If it is cool enough you can go the sequence #2 if not repeat the cool down operation until it will be cool enough.

• Set the front panel switch ''AUTO/OFF/DRAIN'' to OFF

2. Shut down of the electrical supply CAUTION

• Turn off the main power supply to the humidifier.

3. Disconnection of heating element(s)

• Remove the high voltage connector located at the top right hand side of the mechanical compartment.

o Model SK302 to 306: Unscrew the connector.

o Model SK310 to SK360: squeeze the locking ears of the high voltage connector and pull it apart.

4. Disconnection of the other accessories.

• Disconnect the connector from the water level sensor; this connector is attached to a cable that enters the

mechanical compartment just below the high voltage connector. Squeeze the locking ear of the connector and pull it apart.

• Remove the connection to the high limit sensor (klixon), located on the top cover of the evaporation chamber.

5. Disconnection of steam hose and water pipe

• Remove the steam hose(s) at the top of the evaporation chamber.

• Remove the water drain/fill connection to the evaporation chamber. To do this, unscrew the nipple located on the

lower right hand side of the evaporation chamber.

6. Removing the evaporation chamber

• The evaporation chamber may now be freely removed from the humidifier cabinet.

• CAUTION

yourself.

• Make sure that your footing is secure when lifting out the evaporation chamber. On large humidifier (SK340 and

SK360) it may weigh more than 35 lb (15 Kg). This operation may require another person to assist you in removing the evaporation chamber.

7. Opening of the evaporation chamber

• Remove the cover from the evaporation chamber.

o Model SK302 to 306: Unlatch the 3 latches located around the evaporation chamber, caution: these latches

o Model SK310 to SK360: Turn the latches of the 4 or 8 latches located around the evaporation chamber.

• Remove the cover from the evaporation chamber.

SK300 Humidifier

User Manual

: RISK OF ELECTRIC SHOCK. SHUT DOWN THE ELECTRIC SUPPLY OF THE HUMIDIFIER

: The evaporation chamber still contains 1 inch of water, ensure that you do not reverse this water on

are very tight, we recommend you to help you with a screwdriver or pliers to do this.

Page 31

SK300 Humidifier

User Manual

8. Cleaning of the evaporation chamber

• Pour out any remaining water and scale that is on the bottom of the container

• To clean out the remaining scale from the container, use a stiff brush (synthetic filament only) and some vinegar or

any weak acid for cleaning stainless steel.

• WARNING: The use of wire brush or any non-recommended acid will void the warranty.

• If the amount of scale to remove is very important, the service demand frequency is too low for the quality of supply

water, you should then adjust this service demand frequency (see section 9.2 – Programming). Too much scale may impair the normal operation of the humidifier or damage it; in this case warranty will be voided.

9. Cleaning of the other components

• The components installed on the cover (heating element and water level sensor) and the cover itself should be

cleaned as necessary, only if some scale has been accumulated on them.

• Proceed as per the cleaning of the container (step #8).

• Removing and cleaning of the water level sensor.

A chamber protects the water level sensor. Cleaning of the sensor requires removing this chamber.

o Unscrew the 2 screws holding the chamber, located on the cover. o Carefully remove the chamber, do not touch or damage the water level sensor. o Clean out the water level sensor by using a clean soft cloth.

CAUTION

: The water level sensor is covered by a thin lay of Teflon, any scratch or damage to this lay of Teflon

may provoke failure of the humidifier.

o Clean or the chamber by proceeding as per the main container (see step #8). o

Re-attach the clean chamber to the cover and screw in the 2 screws on the top of the cover.

Probe protector

Spacer

Adjustement potentiom eter

Terminal connector

Compression

fitting

G askets

Brass washer

Nut (a)

T e flon nu t (b)

W ater le vel se n s o r

chamber

IM P O R T A N T :

A lw a y s ke e p th e

openings clean, water

m ust flo w th ru.

Cover of evaporation cham ber

(Illus. 54)

Page 32

SK300 Humidifier

User Manual

10. Re assembly of the evaporation chamber

• Rinse out the container and the cover with water.

• Check the cover gasket, and make sure that the gasket is well placed before to re-install the cover on the container.

The water level sensor should be in front of the drain/fill connection of the evaporation chamber.

• Tighten the latches around the cover (3,4 or 6).

• Replace the evaporation chamber in the humidifier.

• Tighten the water drain/fill connection nipple.

• Replace the steam hose(s) on the outlet of the evaporation chamber.

• Reconnect the connector of the water level sensor, high temperature switch (klixon) and the high voltage connector

of the heating element.

CAUTION

UNPROPER CONNECTION MAY PROVOKE ELECTRIC ARCS.

: RISK OF FIRE. MAKE SURE THE HIGH VOLTAGE CONNECTOR IS PROPERLY LOCKED. AN

11. Start-up of the humidifier

• Turn on the main power supply to the humidifier.

• The POWER light of the front panel should be illuminated.

• Press the button to enter the programming mode, to reset the Running hours (see section 9.2-Programming

Step 5).

• Set the front panel switch ''AUTO/OFF/DRAIN'' to AUTO. The humidifier will command to fill the evaporation

chamber with water; the FILL light should be illuminated. It is possible that the CHECK light will illuminate because the evaporation chamber is empty. This signal will extinguish as soon as the normal condition will be reach.

• If there is a humidity demand, the humidifier will produce steam again.

Page 33

13. Exploded view & Bill of Material

13.1. Exploded view

SK300 Humidifier

User Manual

SDU Cabinet

Plastic gril

Steam Trap Assembly

(Illus. 55)

Evaporation chamber base

SK302 to SK306

DE E

Evaporation chamber base SK310 to SK360

Page 34

SK300 Humidifier

User Manual

13.2. Bill of material

Item Description Model Part number

SK302 to 306 SW CONTSMA-ASSY SK310 to SK330 SW CONTMED-ASSY SK340 & SK360 SW CONTLAR-ASSY

SK302 to 306 (1 phase) SP 4018-M

SK304 to 306 (3 phases) SP 4019-M

SK310 & SK314 SP 4183A SK320 & SK330 SP 4183B

SK340 SP 4186 SK360 SP 4185A

SK302 to 306 SP 1008 SK310 to SK330 SP 1021 SK340 & SK360 SP 1022

SK302 to 306 SP 4196-M

SK310/314/320/340 SP 4197-M

SK330 & SK360 SP 4198-M

SK302 to 306 SW FOAMSM-ASSY

SK310/314/320/340 SW FOAMMED-ASSY

SK330 to SK360 SW FOAMLG-ASSY

SK302 to 306 SW PROBSM-ASSY

SK310/314/320/340 SW PROBMD-ASSY

SK330 & SK360 SW PROBLAR-ASSY SK302 to SK360 SP 6003

With IDC SP 6007

SK302 to 306 SW TRAPSMA-ASSY SK310 to SK330 SW TRAPMED-ASSY SK340 & SK360 SW TRAPLAR-ASSY

SK302 to SK360

SP 1024

F G H

Container of evaporation chamber

Cover of evaporation chamber

Evaporation chamber gasket

Heater element See table below

Level sensor chamber

Washer (elements) SK302 to SK360 SP 1005

S/S hex. Jam nut (elements) SK302 to SK360 SP 2330

High temperature switch (klixon) SK302 to SK360 SP 3035

Foam sensor

Water level sensor

Water supply valve

Fill and drain trap assembly

Silicone tubing ½” SP 1023A Silicone tubing ¾” SP 1023B

PCV tubing 5/8”

Alphanumeric display SK302 to SK360 SW SK300DISPL-ASSY

P Q R

U V

X Y

''AUTO/OFF/DRAIN'' rocker switch SK302 to SK360 SW SKSWITCH-ASSY

Terminal block and high voltage connectors SK302 to SK360 /

Cooling fan SK302 to SK360 SP 3007

Transformer See table below

Contactor See table below

50 A SP 3102

Solid State Relay

Main printed circuit board SK302 to SK360 NW SK300MAIN-TEST

Modulating printed circuit board SK302 to SK360 NW SK300MODULSS

SDU fan

Transformer See table below

Fuse inside SDU

Drain valve SK302 to SK360 SP 6010

100 A SP 3103 125 A SP 3105

SDU I SW FANSDU1-RET SDU II SW FANSDU2-RET SDU III SP 3010

SDU I and SDU 2 SP 5105

SDU 3 SP 5106

Page 35

Model

SK302

SK304

SK306

SK310

SK314

SK320

SK330

SK340

SK360

Voltage

240V/1∼ 208V/1∼ 480V/1∼ 600V/1∼

240V/1∼ 208V/1∼ 208V/3∼ 480V/1∼ 480V/3∼ 600V/1∼ 600V/3∼

208V/3∼ 480V/3∼ 600V/3∼

480V/3∼ 600V/3∼

208V/3∼ 480V/3∼ 600V/3∼

480V/3∼ 600V/3∼

SK300 Humidifier

User Manual

Heater element

SE 5932 SP 3309 SP 3029 SP 3312 SE 5933 SP 3300 SE 5934 SP 3320 SE 5935 SP 3340

SE 5937 SP 3309 SE 5940 SP3300 SE 5924 SP3300 SP 3080 SP 3305 SE 5941 SP 3320 SP 3029 SP 3329 SE 5923 SP 3320 SP 3080 SP 3329 SE 5942 SP 3340 SP 3029 SP 3349 SE 5925 SP 3340 SP 3080 SP 3349

SE 5938 SP 3309 SE 5943 SP3300 SE 5933 SP3300 SP 3080 SP 3305 SE 5944 SP 3320 SP 3029 SP 3329 SE 5934 SP 3320 SP 3080 SP 3329 SE 5945 SP 3340 SP 3029 SP 3349 SE 5935 SP 3340 SP 3080 SP 3349

SE 5959 SP 3300 SP 3100 SP 3305 SE 5958 SP 3320 SP 3080 SP 3329 SE 5957 SP 3340 SP 3080 SP 3349

SE 5946 SP 3300 SP3220 SP 3305 SE 5947 SP 3320 SP 3080 SP 3329 SE 5948 SP 3340 SP 3080 SP 3349

SE 5949 SP 3300 SP 3027 SP 3351 SE 5950 SP 3320 SP 3100 SP 3352 SE 5951 SP 3340 SP 3100 SP 3353

SE 5952 SP 3320 SP 3220 SP 3352 SE 5939 SP 3340 SP 3100 SP 3353

SE 5949 SP 3308 SP 3027 SE 5950 SP 3320 SP 3027 SE 5951 SP 3340 SP 3027 -

SE 5952 SP 3321 SP 3220 SE 5939 SP 3340 SP 3027 -

Transformer

Contactor

SP 3029 SP 3029 SP 3029

SP 3029 SP 3029

SDU Transformer

SP 3305 SP 3329 SP 3349

SP 3312 SP 3305

Page 36

SK300 Humidifier

User Manual

14. Trouble shouting guide

Problem Indicator Display Causes Corrective actions

• The humidifier is not powered.

• The low voltage fuse is open.

• The high temperature switch is open.

• Wires harnesses inside the humidifier are not secured properly.

• The rocker switch is at the OFF position.

• Wire harness from the LED display panel to the Main pc board is not secured properly.

• Modulating humidifier: no analog signal.

• On/Off humidifier: no demand from humidistat or air flow is not detected by air pressure switch or high limit humidistat is open.

• Control wires are not properly secured to the terminal blocks.

• Air flow is not detected by air pressure switch or high limit humidistat is open.

• Control wires are not properly secured to the terminal blocks.

• Humidifier is filling with water and has not reached or is not reaching the high of the water level sensor.

• Humidifier is not filling with water.

• Excessive foaming condition inside the evaporation chamber.

• Foaming sensor is grounded.

• Check for the main power supply and fuses.

• Check the transformer, the low voltage fuse.

• Check the high temperature switch, the wires harnesses and the Main pc board.

• Press the rocker switch to

the AUTO position.

• Check the white color wire

harness.

• Press the RESET button

on the Main pc board.

• Verify the setting of the

humidistat.

• Check the fan operation.

• Check the operation of the

high limit humidistat.

• Verify the connections of

the wires to the control terminal blocks.

• Check the fan operation.

• Check the operation of the

high limit humidistat.

• Verify the wires to the

control terminal blocks #1 & 2.

• Verify if the drain valve is

manually open.

• Check if the shut off valve

on the water supply line is open.

• Verify the operation of the

fill valve.

• Check the fill valve

strainer and the external strainer are not blocked.

• Verify the quality of the

supply water.

• Verify if chemical products

were used to clean the evaporation chamber during maintenance. Rinse with water the chamber properly.

• Check the setting of the

Drain cycle. Reduce the time between Drain cycles.

Humidifier does not

operate

(Power Off)

Humidifier does not

operate

(Power On)

Humidifier does not

produce steam

(No Demand)

Humidifier does not

produce steam

(Safety Open)

Modulating

humidifiers only

No water inside the

evaporation chamber

Humidifier will not

stop draining

Humidifier is always

on Foam cycle

Power: Off

Check: Off

Fill: Off

Steam: Off

Drain: Off

Power: On Check: Off Fill: Off Steam: Off Drain: Off

Power: On

Check: Off

Fill: Off

Steam: Off

Drain: Off

Power: On Check: Off Fill: Off Steam: Off Drain: Off

Power: On

Check: On

Fill: On

Steam: Off

Drain: Off

Power: On

Check: Off

Fill: On

Steam: Off

Drain: On

NEP 3.0 SK310M

DEMAND

SAFETY

OPEN

LEVEL

FOAMING

CYCLE

Page 37

SK300 Humidifier

User Manual

Problem Indicator Display Causes Corrective actions

• Service the evaporation chamber, see section 14.

• Reset the Running hours to cancel the blinking of the CHECK light, see section 9.2 STEP 5.

• Verify if the humidifier was operating below the standard water level then replace the item J.

• If connector was removed while powered was still ON then press on the main pc board the TEST button until the Drain light is ON then press RESET once.

• Verify the connection of the brown wire to the Main pc board.

• Replace the water level sensor, item J.

• Verify the drain valve, the fill and drain water pipe connection, the water level sensor chamber are not obstructed.

• Call factory for trouble shooting instruction.

• Adjust the contrast of the display.

• Verify the connections of the ribbon cable are properly secured and on the right side (red line on cable).

• Replace the LCD display, item N.

Humidfier is

operating and the

CHECK light is

blinking

Humidifier is not

operating and the

CHECK light is ON

Humidifier is not

operating and the

CHECK light is ON

Humidifier will not

drain

Humidifier does not

operate and display

is blank

Humidifier is

producing steam and

display is blank

Power: On

Check: Blink

Fill: Off Steam: On Drain: Off

Power: On

Check: On

Fill: Off

Steam: Off

Drain: Off

Power: On Check: On Fill: Off Steam: Off Drain: Off Power: On Check: On Fill: Off Steam: Off Drain: Off

Power: On

Check: Off

Fill: Off

Steam: Off

Drain: Off

Power: On

Check: Off

Fill: Off

Steam: On

Drain: Off

SCROLL

MODE

OVER

HEATED

PROBE

DEFECTED

DRN/PROB

BLOCK

• The Running hours have exceeded the Service hours.

• The electronic temperature sensor inside the water level sensor had sensed abnormal temperature.

• The quick connector to the water level sensor was removed while the humidifier was operating.

• The brown wire connected to the top left corner of the Main pc board is not properly secured.

• The water level sensor is damaged.

• During a Drain or Foaming cycle, the water level sensor has sensed the water level has not decreased.

• The following components can be the cause of this problem: water level sensor (item J), main pc board (item U), modulating pc board (item V) or the LCD display (item N).

• The potentiometer contrast is set at the lowest setting.

• The display ribbon cable is not connected properly.

• The LCD display is defective.

Page 38

SK300 Humidifier

User Manual

Personal notes

Page 39

1. General

Unless otherwise arranged, in writing, the acceptance of the Order Confirmation by the purchaser includes acceptance of the "General Conditions of Sale and Warranty" of National Environmental Products, Ltd hereafter referred to as NEP.

2. Incoterms

The international rules for interpretation of trade terms "Incoterms" as defined by the ICC Incoterms publication no. 460 from 1990, shall apply to the commercial terms used herein.

3. Confirmation of Order

• NEP shall not be deemed to have accepted an order until

written "Order Confirmation" from NEP is issued to the purchaser.

• It is the responsibility of the purchaser to verify that all

information concerning his/her order is correct and to notify NEP In writing, of any discrepancy prior to the order being shipped. In the event of a change or correction to an existing order, a second "Order Confirmation" will be issued by NEP.

4. Price

• Our prices are net, Ex-works Montreal in U.S. Currency, unless

stated otherwise.

• Minimum orders shall be $50.00 minimum.

• Shipping and Handling charges are $5.00 minimum per order

unless the shipment is billed to the purchaser's account or shipped freight collect.

• NEP reserves the right to adjust accepted prices in the event of

alterations in rates of exchange, variations in costs of materials, changes in wages, interference on the part of the Government or similar conditions over which NEP has no control.

5. Payments terms

• Major credit cards, C.O.D., Prepayment.

• For open account, invoices are payable within 30 days from the

date of invoice without no deduction, unless specify otherwise.

• An interest charge of 2% per month will be included on all

overdue payments.

• No new order will be process if invoices are not paid within 45

days.

6. Transfer of ownership

The goods shall remain the property of NEP until the full payment for the goods has been received by NEP.

7. Delivery terms

• Shipments are Ex-works 400 Lebeau, St Laurent, Quebec,

H4N 1R6, CANADA unless notified otherwise.

• Unless special instructions, the order will be delivery in the way

which NEP deems best without guaranteeing this to be the cheapest way of transport.

• For International Order, a written designation naming the

freight forwarding agent is required and will remain in effect until notified otherwise.

• Any discrepancy, damage or breakage should be reported in

writing both to NEP and to the Carrier within 5 working days from the receipt date.

8. Risk

From the moment of delivery, the purchaser shall bear all risks for the goods and NEP shall not be responsible for loss and damage incurred during transportation.

9. Delivery time

• Delivery time is stated approximately and depends on the

product ordered, please allow a minimum of: a) 2 weeks for processing North American order. b) 6 weeks for processing International order.

• We will make every effort to adhere to our delivery promises,

but will not accept order or contract cancellation or any liability for any direct or indirect losses that may arise for any reason whatsoever as a result of our failure to adhere to such promises.

SK300 Humidifier

General conditions of sale & warranty

10. Return of good

• Goods received by the purchaser cannot be returned unless

a completed "R.M.A. Form" (Return Material Authorization Form) has been issued by NEP's Customer Service.

• Any returned goods must be sent to NEP 400 Lebeau, St

Laurent, Quebec, H4N 1R6, CANADA, unless stated otherwise by the R.M.A. Form, accompanied with the completed "R.M.A. Form", the R.M.A. number shall be prominently displayed on the shipping box. Unauthorized returns will be refused.

• Any returned goods must be sent freight prepaid. Any goods

that come to us freight collect will be refused and returned to sender unless previously agreed to by us in writing on the "R.M.A. Form".

• Goods returned for credit shall be in condition for resale in the

original box and properly packaged. Units, accessories or components that have been installed are not returnable and not refundable. Credit is subject to an overhead charge of 30% of the invoice plus shipping & handling if returned within 30 days of the invoice date and 50% from 30 to 60 days.

• Non standard product (SK units with special feature),

Multisteam manifolds and any DI unit are not returnable and not refundable.

11. Warranty

• Provided that the terms of payment are observed, the

purchaser is offered a warranty of 24 months from the original purchase date of delivery for any NEP's standard product, provided the equipment has been properly installed and operated in accordance with NEP instructions.

• The warranty covers faulty manufacture, design and/or

defective materials and is limited to the equipment and components. The warranty shall cease to be valid in the event of misapplication, incorrect installation, improper maintenance or any other incorrect uses or misuse of the product.

• For the SK series, the warranty furthermore ceases to be

valid if the user disconnects or removes any electronic or mechanical components prior disconnecting the input power. NEP assumes no responsibility for repairs made on equipment, unless performed by NEP's authorized personnel.

• The defective product or component shall be returned in

accordance with the paragraph 10 (Returns of goods) as described in this document.

• NEP agrees under the warranty to repair or replace (at the

discretion of NEP) such standard product or component, which upon examination by NEP are found to be defective.

• Product or component replaced or repaired under warranty

will be sent back to the purchaser, standard freight paid by NEP

• Expenses in connection with travelling time, dismantling and

mounting shall not be paid by NEP

• Guarantee for products or components sold but not

manufactured by NEP, is only given to the same extent as given to NEP, however, not exceeding the normal NEP warranty.

• Parts used for repairs are warranted for the balance of the

term of the warranty on the original humidifier or 90 days, whichever is longer.

• Any repair made, after the original warranty period, at the

NEP facilities are warranted for 1 month from the date of repair.

12. Proper law and jurisdiction

This contract is and shall be deemed to have been made in the province of Quebec, CANADA, and shall in all respects, be governed by the province of Quebec laws.