Nortec SE User Manual

Important: Read and save these instructions. This guide to be left with equipment.

Series

Installation and Operation Manual

Includes installation, operation, maintenance, and troubleshooting information for your indoor SETC B+ and SEP steam exchange humidifier

2552940-B | 28 APR 2011

Thank you for choosing Nortec.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

Proprietary Notice

This document and the information disclosed herein are proprietary data of NORTEC HUMIDITY LTD. Neither this document nor the information contained herein shall be reproduced used, or disclosed to others without the written authorization of NORTEC HUMIDITY LTD., except to the extent required for installation or maintenance of recipient’s equipment. All references to the Nortec name should be taken as referring to NORTEC HUMIDITY LTD.

Liability Notice

Nortec does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts/components/equipment that are not authorized or approved by Nortec.

Contents

1 Introduction

2 Receiving and Unpacking

3 Humidifier Components

5 SETC/P Models

6 Options and Accessories

9 Installation

10 Typical Humidifier Installation

11 Location

12 Mounting

14 Plumbing

15 Boiler Steam and Boiler

Condensate Return

17 Steam Lines and Condensate

Returns

43 Operation

44 SETC LED Status Lights

44 SEP LED Status Lights

45 How the Humidifier Works

49 SETC Humidifier Configuration

60 SEP Humidifier Configuration

63 Maintenance and

Servicing

64 Required Maintenance

65 Maintenance Schedule

69 Maintenance Shutdown and

Extended Shutdown

70 Maintenance Checklist

71 Troubleshooting

22 Electrical

23 External Controls

32 Options and Accessories

33 Start Up

34 Installation Check

35 SETC User Interface

36 Start Up Procedure

37 Status Screens

39 Nortec Digital Controls

41 Start Up Checklists

73 General Troubleshooting

76 SETC Warnings and Faults

82 SEP Faults

83 Wiring Diagrams

85 Spare Parts 96 Warranty

CAUTION: Servicing

 Disconnect main power before any servicing.  Shut off pressurized steam supply and ensure steam pressure is safely relieved

before any servicing of pressurized steam components.

 The electrical compartment contains high voltage components and wiring. Access

should be limited to authorized personnel only.

 During and following operation of the humidifier, the steam and components in

contact with the steam such as the tank, blower pack, steam lines, steam distributors, and condensate lines can become hot and can burn if touched.

 Walter Meier does not accept any liability for installations of humidity equipment

installed by unqualified personnel or the use of parts/components/equipment that are not authorized or approved by Walter Meier.

CAUTION: Electrical

 All electrical work should be done according to local electrical code.  Electrical connection to be performed by a licensed electrician.

CAUTION: Plumbing / Steam Lines

 Plumbing to be performed by a licensed plumber.  Pressurized steam line installation to be performed by a qualified installer.  Drain water from humidifier can be very hot. Do not drain to public sink.  All plumbing and pressurized steam supply line work should be done according to

local plumbing code.

CAUTION: Installation

 Do not mount on hot surfaces  Do not mount in area where freezing can occur  Do not mount on vibrating surface  The SETC/P produces steam at atmospheric pressure no devices which could

block steam output should be connected to the steam outlet.

 Steam output lines must be installed so that no restriction can produce

backpressure in the humidifier.

 Regardless of selecting On/Off or modulating control method, Nortec humidifiers

must have a closed circuit across its On/Off security loop control terminal to operate. Nortec highly recommends the use of a high limit humidistat and an air proving switch in series for this function.

 Unit damage caused by water quality outside of the specified ranges is not

covered under warranty.

Introduction

1 | Introduction

Note: A steam valve, actuator, and wye strainer are shipped along with the SETC/P humidifier but in separate small boxes.

Receiving and Unpacking

1 Check packing slip to ensure ALL material has been delivered. 2 All material shortages are to be reported to Nortec within 48 hours from receipt of goods.

Nortec assumes no responsibility for any material shortages beyond this period.

3 Inspect shipment for damage and note damages on shipping waybill accordingly. 4 After unpacking, inspect equipment for damage and if damage is found, notify the shipper

promptly.

5 All Nortec products are shipped on an FOB factory basis. Any and all damage, breakage or

loss claims are to be made directly to the shipping company.

Before Installation

1 Ensure that available voltage and phase corresponds with humidifier voltage and phase as

indicated on humidifier’s specification label.

2 If steam supply is from a Medium or High Pressure boiler ensure supply steam line includes

a relief valve to prevent supply pressure from exceeding 15 psig.

3 Ensure means for returning boiler steam condensate to boiler at atmospheric pressure are

available.

4 Ensure sufficient clearances will be available as described in Location on page 11. 5 Ensure steam lines can be routed to distributor SAM-e manifold or blower pack as described

in Steam Lines and Condensate Returns on page 17.

6 Report any discrepancy immediately to the site engineer.

Figure 1: Specification Label Location

Introduction | 2

Display and Keypad

Float Chamber

Control Terminal Strip

Remote Relay Board

Driver Board

High Voltage Terminal Block

Transformer

Base

Clean Out

Port

Tank

Total Controller

Steam Outlet

Fill Box

Vacuum Break

Steam Inlet (Boiler Steam)

P Trap

Fill Valve

Drain Outlet

Condensate Drain (Boiler Steam)

Auxiliary Drain Outlet

Drain Pump

Mixing Box

Steam Trap

Heat Exchangers

(Faceplate)

On/Off Switch

Heat

Exchanger

Gasket

Actuator

Wye Strainer

CV Valve

Manual Drain Switch

Humidifier Components

3 | Introduction

Figure 2: SETC Humidifier Components

Component

Function of Component

Actuator

Opens and closes the CV valve in proportion to demand for steam.

Auxiliary Drain Outlet

Drains water from tank in case of pump failure. Base

Provides an integrated floor support for the humidifier.

Clean Out Port

Provides access to clean scale from the tank and heat exchanger.

Condensate Drain

Drains condensate formed from boiler steam in the heat exchanger(s)

Control Terminal Strip

Terminal strip for connecting external controls and blower pack to humidifier.

CV Valve

Controls the amount of steam allowed into the heat exchanger which in turn controls the output of the humidifier.

Display and Keypad

User interface for configuring the humidifier.

Drain Outlet

Drain port used for draining water from the humidifier tank.

Drain Pump

Drains water from humidifier.

Driver Board

Provides input and output connections to humidifier components.

Fill Box

Provides an air gap for backflow prevention.

Fill Valve

Controls flow of water into humidifier.

Float Chamber

Measures water level in the humidifier tank.

Gasket

Seals heat exchanger face plate and clean out port cover to tank.

Heat Exchanger(s)

Exchanges energy from boiler steam to the tank water to produce steam for humidification. The faceplate mounts the heat exchanger to the tank.

High Voltage Terminal Block

Primary power connection from remote disconnect to humidifier. Manual Drain Switch

Manually activates pump to drain water from the tank.

Mixing Box

Blends hot tank water with cool fill water to provide drain water cooling.

On/Off Switch

Turns power On/Off to humidifier controller. Note: Turn off humidifier disconnect to shut off primary power to the humidifier.

P Trap

Prevents steam from flowing out the drain outlet.

Remote Relay Board

Provides a terminal strip to dry contacts which open/close to indicate the humidifier is on, humidifying, needs service, or is in a fault condition.

Steam Inlet

Connection for boiler steam, it is connected to the heat exchangers.

Steam Outlet

Connect to steam line with steam hose.

Steam Trap

Drains condensate from the heat exchanger without letting boiler steam escape to drain.

Tank

Holds the water used to generate clean steam for humidification.

Total Controller

Controls all functions of the humidifier’s operation and provides user

interface for configuration of the humidifier.

Transformer

Steps primary voltage down to 24 VAC for the controller and internal components such as the fill valve and drain valve.

Vacum Break

Prevents a siphon from occurring when the drain pump is stopped.

Wye Strainer

Protects CV valve and other system components from dirt and rust in the piping system.

Description of Components

Table 1: Humidifier Components

Introduction | 4

SETC50

SE 100-175

SE 250-375

SE 525-750

SE 1050

Note:

SE 750 has

2 steam outlets

SETC/P Models

The SETC with its Total Controller and state-of-the-art features and options is the most advanced steam exchange humidifier available. The base model SEP provides steady and reliable humidification using the same proven heat exchanger technology as the SETC. The SETC/P is available in capacities ranging from 50 lb/hr (23 kg/hr) to 1050 lb/hr (475 kg/hr). SETC/P humidifiers are packaged in five different cabinets depending on their capacity. Figure 3: SETC/P Modelsshows the configuration and relative size of the five different cabinets. Table 3 provides specifications for the SETC/P product line.

Figure 3: SETC/P Models

The SE 50, 100, 175, 250, and 375 all have a single heat exchanger. The SE 525 and 750 have two heat exchangers. The SE 1050 has three heat exchangers. All models have a single pressurized steam inlet and condensate drain with internal manifold connecting separate heat exchangers if they are present.

5 | Introduction

Option / Accessory

Used For

Freeze Protection Package (SETC Only)

Emptying the tank in case of fault or power failure to prevent freezing. (Factory installed)

Floor Stand

Supporting the humidifier 27 inches above the floor (height can be reduced by cutting legs of floor stand). (field assembled)

Ceiling Mounting Kit (SE50 Only)

Providing a drain pan and support brackets for mounting an SE50 unit from the ceiling.

Steam Distributors

Adding steam into air ducts

Remote Blower Pack

Adding steam into a space remote from the humidifier.

SAM-e Steam Distribution Manifold

Adding steam into air ducts where short absorption is required.

Digital or Analog Control Humidistats

Controlling the output of the humidifier based on sensed RH (can be mounted in the space being humidified or in the duct).

Digital RH Transducers

Communicating RH in a space or duct to the humidifier

Digital or Analog High Limit Humidistats

Preventing over humidification in a duct by shutting down or throttling down the humidifier when duct RH gets high.

Air Proving Switches

Insuring humidification only occurs when air is moving in a duct.

Nortec LINKS 2 (SETC Only)

Connecting the humidifier to a building management interface. hardware allows control of the humidifier via BACnet, Lonworks, Johnson N2, or Modbus.

Nortec OnLine (SETC Only)

User and factory monitoring and configuration of the humidifier via the internet.

Outdoor Model (SETC Only)

The outdoor model of the SETC provides a weatherproof enclosure that allows the SETC to be installed on rooftops in moderately cool climates. Refer to the SETC installation manual that is provided with the outdoor model to insure proper installation.

Options and Accessories

Nortec provides a complete line of options and accessories for every humidification application. The following options and accessories are available and may have been delivered with your SETC/P humidifier. Refer to the installation instructions that came with the accessories for their proper installation and operation.

Table 2: Options and Accessories

Introduction | 6

Model

SETC

Part No

SEP

Part No.

Valve

CV Valve,

Steam

Inlet, Wye

Port (NPT)

Cond-

ensate

Port

(NPT)

Net/Full

Weight

lb (kg)

Required

fill line

flow

gal (l)

/min

Required

Drain

capacity

gal (l)

/min

Electrical

2552765

2520383

2.8

1/2

3/4

125/180

(57/82)

2.6 (10)

5.2 (20)

Voltage

110-120

Phase

Amps

1.25 A Power

0.15 KW Max

Disconnect

15 A

100

2550073

2525132

5.5

3/4

267/423

(121/192)

175

2550074

2525133

10 1 3/4

250

2550075

2525134

12 1 3/4

355/599

(161/272)

375

2550076

2525135

1 1/4

3/4

525

2550077

2553312

1 1/2

529/992

(240/450)

750

2550078

2553313

40 2 1

4.5 (17)

8 (29)

1050

2550080

2525139

2 1/2

1 1/4

703/1384 (318/628)

Model

*Supply

Steam

Pressure

(psig)

*Max Output

lb/hr (kg/hr)

Approximate

Boiler Steam Consumption

lb/hr (kg/hr)

**Water

Consumption

gal (l) /hr

**Drain Volume

gal (l) /hr

(6)

(7)

2.3

(9)

0.8

(3)

(14)

(16)

5.7

(21)

1.9

(7)

(23)

(26)

9.0

(34)

3.0

(11)

100

(12)

(14)

4.7

(18)

1.6

(6)

(29)

(33)

11.3

(43)

3.8

(14)

100

(45)

115

(52)

18.0

(68)

6.0

(23)

175

(21)

(24)

8.2

(31)

2.7

(10)

110

(50)

127

(58)

19.8

(75)

6.6

(25)

175

(80)

201

(91)

31.5

(119)

10.5

(40)

250

(30)

(34)

11.7

(44)

3.9

(15)

158

(72)

181

(82)

28.3

(107)

9.4

(36)

250

(114)

288

(131)

44.9

(170)

15.0

(57)

375

(44)

112

(51)

17.5

(66)

5.8

(22)

236

(107)

272

(123)

42.5

(161)

14.2

(54)

375

(170)

431

(196)

67.4

(255)

22.5

(85)

525

137

(62)

157

(71)

24.5

(93)

8.2

(31)

331

(150)

380

(173)

59.5

(225)

19.8

(75)

525

(239)

604

(274)

94.4

(357)

31.5

(119)

750

195

(89)

224

(102)

35.1

(133)

11.7

(44)

473

(215)

543

(247)

84.9

(321)

28.3

(107)

750

(341)

863

(392)

134.8

(510)

44.9

(170)

1050

273

(124)

314

(143)

49.1

(186)

16.4

(62)

662

(301)

761

(346)

118.9

(450)

39.6

(150)

1050

(477)

1208

(549)

188.7

(714)

62.9

(238)

Table 3: SETC/P Specifications

Table 4: SETC/P Capacities and Water Consumption

7 | Introduction

* Supply steam pressure must be present at the CV valve to achieve rated output

** At maximum output , 25% blow down, and with drain water cooling activated.

13.8 in.

35.1 cm

8.0 in.

20.3 cm

31.6 in.

80.3 cm

39.5 in.

100.2 cm

4.0 in.

10.2 cm

9.7 in.

24.6 cm

21.0 in.

53.3 cm

40.2 in.

102.1 cm

3.7 in.

9.5 cm

7.4 in.

18.9 cm

10.3 in.

26.2 cm

1.0 in.

2.5 cm

6.8 in.

17.2 cm

1.0 in.

2.5 cm

Steam Outlet (D)

SETC 750 & 1050

SETC 100 - 525

(E) Pressure Steam Inlet (SE 1050 Only)

(E) Pressure Steam Inlet

Water Inlet 1/2 in. NPT

Drain 3/4 in. (19mm) Tube

(F) Steam Condensate Outlet

Aux. Drain 1/2 in. NPT

44.5 in. 113 cm

4.1 in.

10.3 cm

1.5 in.

3.8 cm

1.8 in.

4.6 cm

12.8 in.

32.6 cm

14.5 in.

36.8 cm

.5 in.

1.3 cm mounting holes 4 places

2.3 in.

5.7 cm

1.4 in.

3.7 cm

25.6 in. 65 cm

20.2 in.

51.3 cm

1.6 in. 4 cm

2.7 in.

6.9 cm

8.0 in.

20.3 cm

10.3 in.

26.1 cm

16.8 in.

42.5 cm

19.6 in.

49.7 cm

Aux. Drain 1/2 Female NPT

Steam Condensate Outlet 3/4 Male NPT

Pressure Steam Inlet 1/2 Male NPT

Drain 3/4 in. (19 mm) Tube

Steam Outlet

1.75 in. (44 mm)

Water Inlet 1/2 in. Male NPT

8.3 in. 21 cm

4.6 in.

11.6 cm

1.0 in.

2.6 cm

1.1 in.

2.8 cm

1.3 in.

3.2 cm

2.6 in.

6.5 cm

5.5 in.

13.9 cm

5.5 in.

13.9 cm

10.0 in.

25.4 cm

5.3 in.

13.4 cm

2.0 in.

5.1 cm

1.9 in.

4.7 cm

2.5 in.

6.3 cm

SE 50

Model

A in. (cm)

B in. (cm)

C in. (cm)

D in. (mm)

E NPT

F NPT

100

1 3/4 (44)

3/4

175

20.8 (53)

N/A

16.1 (40.8)

3 (76)

3/4

250

3 (76)

3/4

375

27.2 (69)

N/A

22.4 (56.8)

4 (102)

1 1/4

3/4

525

4 (102)

1 1/2

750

42.7 (108.6)

21.9 (55.5)

38.0 (96.4)

2 X 4 (102)

1050

58.3 (148.2)

29.7 (75.3)

53.6 (136.1)

2 X 4 (102)

2 1/2

1 1/4

Figure 4: SE Dimensions

Introduction | 8

Installation

10 Typical Humidifier Installation 11 Location 12 Mounting on Optional Stand 13 Ceiling Mounting (SE50 Only) 14 Plumbing 15 Boiler Steam and Boiler Condensate

Return 17 Steam Lines and Condensate Returns 22 Electrical 23 External Controls

23 Control Wiring

23 Control Location

24 On/Off Control Wiring

25 Modulating Control Wiring

27 Transducer Control Wiring

28 Optional Outdoor Temperature Reset 29 CV Valve Actuator Wiring 30 Remote Relay Board Wiring 31 Staged Modulation Wiring (SETC Only) 32 Options and Accessories

32 Remote Blower Pack

9 | Installation

Air gap

Pressurized steam supply

Water supply 30-80 psig

Tank drain

Condensate return to boiler

1- 24 VAC 2- On/Off Loop 3- Ctrl Ground 4- Control Signal

5- Limit Signal 6- 5 VDC

7- Ground 8-

Tank Blow Down Ground

10- Actuator 11- Actuator 12- 0-10 VDC Out

On/Off

Controls

Modulation

Controls

E X

S E

T C / P

Ground

Dedicated

Circuit Breaker

or Disconnect

SETC/P

EXT

2 in.

(5 cm)

min.

1ft (30 cm)

1 ft (30 cm)

min.

Location

Mounting

Pg 11

Steam

Distribution

Pg 17

Controls

Pg 23

Plumbing

Pg 14

Boiler

Steam

Pg 15

Electrical

Pg 22

30 in.

(76 cm)

Min.

Side

Clearance

30 in.

(76 cm)

Min.

Front

Clearance

36 in. (91 cm)

Min. Top Clearance

(0 in SE 50)

30 in.

(76 cm)

Min.

SE 1050

SAM-e Distribution Manifold

Typical Humidifier Installation

Figure 5: Typical Humidifier Installation

Installation | 10

Note:. Condensate drain line must be sloped downward to boiler condensate return. Use pump (by others) or stand (optional) if necessary.

30 in.

(76 cm)

Min. Side

Clearance

30 in.

(76 cm)

Min. Front

Clearance

Mount

HumidifierLevel

As Close as

Possible to Steam

Distributor

5-95%

36 in. (91 cm) Min.

Top Clearance

(0 in. for SE50 only)

30 in.

(76 cm)

Min.

SE 1050

only

Condensate drain

line must be

sloped down, do

not use to lift

condensate

Location

The SE series humidifiers are designed to be either floor mounted or stand mounted (stand optional). SE 50 models can also be ceiling mounted with the optional ceiling installation kit, part number 2520345.

 Install only in areas with ambient temperature 41-104 °F (5 – 40 °C) relative humidity 5 -

95% (non condensing).

 Ensure mounting surface is strong enough to support the full weight of the humidifier and

accessories (see Table 3: SETC/P Specifications).

 Install in location where electrical power, boiler steam, and drain can be connected to the

humidifier.

 When possible install below the steam distributor. If mounted above the steam distributor

take care to provide proper steam line routing and proper condensate traps.

 DO NOT locate the humidifier any further then absolutely necessary from the steam

distributor location as net output will be reduced as a result of heat loss through the steam line.

 Condensate drain is located close to the bottom of the humidifier. Locate the unit so that

condensate line slopes down to boiler or use pump (by others) to lift to boiler. Use stand if necessary.

 Avoid mounting humidifier on combustible surfaces including (but not limited to) carpet, tile,

or certain insulating materials.

 Clearance dimensions shown are for reference only and are the minimum required for

maintenance of the humidifier. Consult local and national codes before final location and installation. Nortec does not accept responsibility for installation code violations.

Figure 6: Installation Location / Clearance

11 | Installation

Note: The humidifier must be secured to the stand (hardware provided) and the stand must be secured to the floor (hardware by others).

Center support only present on SE 525

and larger.

Fasten SE humidifier

to stand with bolts,

lock washers, and nuts

provided. Tighten

to 200 in-lb (22.6 Nm).

Mount stand on level surface

Ensure humidifier is Level

Secure stand to floor four places. (hardware by others)

Note:

Mounting on Optional Stand

The optional SE floor stand positions the SE humidifier at a convenient working height and provides additional clearances for sloping drains. The stand must be assembled at site.

 Assemble the stand according to the instructions that are provided with it.  Ensure the stand and humidifier are installed on a level surface  Permanently secure the stand to the floor via the holes in the leg support plates following

any local codes or regulations.

Figure 7: Mounting on Optional Stand

Installation | 12

Note:. The SE50 requires regular maintenance including removal of scale from the heat exchanger and tank. Make sure it is installed in a location where the maintenance can be performed.

(

)

12.8 in.

(32.6 cm)

Anchor 3/8 in (M10)

support rods to ceiling

(by others)

Support rods and hardware (by others) must not extend

below support bracket flange.

Sloped drain 1/2 in. pipe

(by others)

Ceiling Mounting (SE50 Only)

Nortec offers an optional ceiling mounting kit (part number 2520345) which allows the SE50 to be ceiling mounted with zero clearance to the ceiling. Follow the following guidelines for

Figure 8: Ceiling Mounting the SE50

installation.

 Follow the instructions provided with the ceiling mounting kit.  Install in a location where regular maintenance can be performed. Provide clearance as

shown in Figure 6: Installation Location / Clearance.

 The SE50 weighs 180 lb (82 kg) when filled with water and without any accessories or

piping. It is the installer’s responsibility to calculate the total weight which must be

supported, to ensure the ceiling structure is adequate, and to install support rods and to connect drain pan per local codes and regulations.

 The humidifier cannot be used as a structural member. All piping connected to the unit

must be supported independently.

 A drain line emptying into an open drain must be connected to the ceiling kit drain pan.

Nortec recommends a 1/2 in. pipe with sufficient slope to ensure any water collected in the pan will drain from it.

13 | Installation

Note:

 Drain Water is very hot, do not use plastic pipe for drain or condensate lines, do not

drain to public sink. Route to floor drain or equivalent.

 Supply cold potable water, deionized water or reverse osmosis water at 30 - 80 PSIG.

Hardness 5-7 grain or 90 – 120 mg/l (as Ca+2 as CaCO3) Total Dissolved Solvents (TDS) 0.5-3 mg/l or Conductivity 1 to 70 mho/cm Chlorides 0-25 ppm PH 7.2-8.5 Alkalinity 30-130 mg/l (as CaCO3)

Min. 1 1/4 in. OD drain line. Slope down. Increase size if combining multiple drains.

0.75 in. (19 mm). OD

un-threaded drain outlet

Connect with hose cuff

and hose clamps.

Air gap required. 2 1/2 in. to 1 1/4 in. copper reducer is ideal. Hose/line must not touch the bottom of the funnel.

Always install a water shut-off valve.

1/2 in. NPT Use union to connect supply pipe to unit.

*Pipe, unions, and water shut-off valve not supplied by NORTEC.

Axillary drain, 1/2 in. female NPT For draining tank without pump. Leave

valve closed except if freeze protection is installed.

Plumbing

 All water supply and drain line connections must be installed in accordance with local

 See Table 3 and Table 4 on page 7 for supply water flow requirements.  Install water shut off valve and union before humidifier to facilitate servicing.  Insure drain line is adequately sized to provide free and easy draining and that an air gap is

 Auxiliary drain connection with manual shut off valve is recommended for all units. Valve to

 High hardness or silica content supply water may require increased maintenance.  Unit damage caused by water quality outside of the specified ranges is not covered under

Figure 9: Water Supply and Drain Connection

plumbing codes.

installed as shown. See Table 3 and Table 4 on page 7 for flow requirements.

be left closed on units without freeze protection option installed. Valve to be left open on units with freeze protection option installed except during servicing.

warranty.

Installation | 14

Note:.

 Pressurized steam line installation to be performed by a qualified installer.  Damage to SE heat exchanger will occur if it is exposed to pressure above 20 psi..

A safety relief valve must be installed to prevent the SE from being exposed to pressure in excess of 15 psi when the SE is connected to a medium or high pressure boiler via a pressure reducing valve.

 The steam supply line must be designed to provide design pressure at the CV valve

when there is 100 % demand (CV valve completely open). Pressure losses in the steam supply line will reduce SE output.

 Condensate must be drained to a non-pressurized boiler condensate return line.

Pressurized condensate header

Not pressurized

condensate header

(slope down)

F&T Trap

Pressure gauge (optional)

Isolation Valve

Wye Strainer

CV Valve (see table 3)

Condensate Drain Port (see table 3)

Boiler steam inlet port

(see table 3)

Boiler steam supply

line. Max 15 psi, Min 5 psi

measured at CV Valve

6 in.

(15 cm)

Max

Actuator

Condensate drain line.

Gravity feed to boiler.

Use pump if condensate

must be lifted.

Note: Nortec supplies CV valve, actuator and wye strainer. All other components and fittings by others.

Boiler steam

inlet port location

on SE 1050

Boiler Steam and Boiler Condensate Return

15 | Installation

Figure 10: SE Boiler Steam and Condensate Connection

Caution: Condensate leaves the steam traps inside the SE under slight pressure. Steam flash could occur in the condensate drain line.

1/2 in. (1.2 cm)

min.

Install jam nut

and lock washer

Install stem

extension

Install and tighten mounting nut

2 turns then push in and

1/8 turn to lock

Actuator

CV Valve

Raise valve stem to full up

Insert connecting

Turn stem

extension

until holes

line up

Tighten jam nut against stem extension

Nortec supplies a CV valve, actuator and wye strainer with each SE humidifier. The port sizes of the CV valve, boiler steam inlet port, and condensate drain port are given in Table 3: SETC/P Specifications on page 7. Follow the following guidelines for installation.

 All steam line connections must be installed in accordance with local codes.  Install the CV valve actuator following the procedure in Figure 11: CV Valve Actuator

Installation after the CV valve is installed on the steam line. Wire the actuator as described in CV Valve Actuator Wiring on page 29.

 Boiler steam supply line design is the responsibility of the installer. The boiler steam supply

line must be designed so that that design pressure is present at the CV valve when the CV valve is completely open (100% demand). The diameter of the supply line up to the wye strainer may have to be oversized to insure proper steam pressure.

 The SE will operate on supply steam pressures between 5 and 15 psi measured at the CV

valve. Lower steam supply pressures will result in lower output. See Table 4: SETC/P Capacities and Water Consumption on page 7 for capacities at different supply pressures.

 If condensate cannot be gravity fed to the boiler then a pump must be used to lift the

condensate. See Spirax Sarco (www.spiraxsarco.com) and others for pumps and additional information on condensate mananagement.

 The boiler steam and condensate connections are independent. Boiler steam condensate

should be returned to the boiler and should not be mixed with water from the tank drain.

 The steam supply pressure can be entered into the SETC control software to provide display

of unit output. See Pressure Based on page 56.

Figure 11: CV Valve Actuator Installation

Installation | 16

Steam Line

Material

Lb/hr (kg/hr)

Steam Line Length

ft m

Steam Line Description

Copper Tube

0-100 (0-45)

0-90

0-27

1 1/2 in. MED-L Tubing (1.625 in. OD)

101-250 (46-113)

0-180

0-54

3 in. MED-L Tubing (3.125 in. OD)

251-650 (114-295)

0-260

0-79

**4 in. MED-L Tubing (4.125 in. OD)

*Stainless Steel

Tube

0-100 (0-45)

0-90

0-27

1.75 inch Tube x 0.065 inch thick wall

101-250 (46-113)

0-180

0-54

3 inch Tube x 0.065 inch thick wall

251-650 (114-295)

0-260

0-79

**4 inch Tube x 0.065 inch thick wall

Nortec Hose

31-100 (14-45)**

<15

<4.5

***Part Number 1328820 (1 3/4”)

eam

Dire

ction

Ste

ire

tio

2 in. (5 cm)

1 ft (30 cm)

1ft (30 cm)

0.5 in. (12 mm)

10 Degrees

2 Degrees

Use Appropriate Slope Insulate Pipe

1 in. (2.5 cm) pipe

insulation

MAIN RULES FOR ATMOSPHERIC STEAM LINES

 Slope the steam lines.  Trap condensate (Use full size ‘T’ for Traps).  Steam lines must not have any restrictions which could cause back pressure.  Insulate with 1.0 in. (2.5 cm) pipe insulation.  Follow recommended materials, size and length see tables.

Steam Hose Odour: Nortec hose may generate a slight odour during initial use. This odour is temporary and will disappear after a short period of time.

Steam Lines and Condensate Returns

Figure 12: Main Steam Line Requirements

Table 5: Recommended Steam Line Material

Note: * Use only stainless steel tube for reverse osmosis and deionized water applications.

** Use 2 x 4 in. steam lines for steam capacities higher than 750 lb/hr (307 kg/hr)

*** Use one steam hose per 100 lb/hr (45 kg/hr) of output.

17 | Installation

Unit Size

Steam Output

lb/hr (kg/hr)

Steam Outlet and

Line Size .

Copper (SST)

Maximum

Length .

ft (m)

Possible Loss

lb/hr/ft (kg/hr/m)

Possible Loss at

Max. length

lb/hr (kg/hr)

(23)

1 1/2

(1 3/4)

(11)

0.11

(0.16)

(2)

100

(45)

1 1/2

(1 3/4)

(27)

0.11

(0.16)

(4.5)

175

(80) 3 (3)

(27)

0.16

(0.24)

(6.5)

250

(114) 3 (3)

180

(55)

0.16

(0.24)

(13)

375

(170) 4 (4)

180

(55)

0.22

(0.33)

(18)

525

(239) 4 (4)

220

(67)

0.22

(0.33)

(22)

750

(341)

2X 4

(4)

260

(79)

0.44

(0.66)

114

(52)

1050

(477)

2X 4

(4)

260

(79)

0.44

0.66)

114

(52)

Tube

Diameter in.

90 Degree

Elbow ft (m)

45 Degree

Elbow ft (m)

Side Outlet Tee

ft (m)

Gate Valve

ft (m)

Globe Valve

ft (m)

1 1/2 or 1 3/4

3.5

(1)

1.75

(0.5)

(2.1)

0.8

(2.4)

(10) 3 5

(1.5)

2.5

(0.75)

(3.3)

1.1

(3.1)

(16) 4 8

(2.4)

(1.2)

(4.5)

1.6

(0.5)

(24)

Note: Condensate should not be routed to a sink used frequently by personnel. Route to a floor drain or equivalent. Condensate normally cools in traps but is still hot. A SAM-e or larger steam line generates more condensate and water may not cool in the trap. A drain water cooler option may be installed if required by code.

12 in. (30 cm)

min drop to

top of ‘P’ Trap

P Trap

min 8 in.

(20 cm)

plus duct

static pressure

Tee is same size

as steam line

Use a full size tee, not a 90

degree elbow for vertical

to horizontal transitions.

‘P’ Traps Use:

- NORTEC 0.375 in condensate hose .

- 1/4 in Med-L copper tubing, or

- 0.375 in stainless steel tubing

Condensate drains must be sloped down.

Route to humidifier fill cup if possible.

Table 6: Maximum Recommended Length of Steam Line

NOTE: See Table 7 for equivalent length of common fittings.

Table 7: Equivalent Length of Some Common Fittings

Figure 13: Condensate Traps

Installation | 18

12 in.

(30 cm)

min.

Calculated absorption

distance to any obstruction

or 8-10 ft (2.4 - 3 m)

if unknown

Mount distributor

to side of duct

2 x duct

height min.

2/3 Duct height

Note:

Refer to distributor or SAM-e installation manuals for detailed installation instructions.

Hose cuff

with clamps

2 in. (5 cm)

min.

1 ft (30 cm)

‘P’ Trap

1 ft (30 cm)

min. before

anybend

Condensate line

Use steam hose between steam outlet and steam line.

Insulated copper

steam line. Support

so weight is not on

steam outlet.

To drain

Figure 14: Distributor Location in Duct

Figure 15: SAM-e/Steam Distributor Above Humidifier (Copper Steam Line Shown)

19 | Installation

‘P’ Trap

Install Condensate Tee Before Distributor

1 ft (30 cm) min. Before

any bend

Min 12 in.

(30 cm)

radius

Hose will soften over time proper support Is necessary

Support Brackets

1 ft (30 cm) min.‘P’ Trap

To drain

1ft (30 cm)

min. before

any bend

Obstruction

Use full size condensate tee

at low point. Slope lines up

to “T” and immediately after it.

1 ft (30 cm) min.

1 ft (30 cm)

0.5 in. (1.2 cm) min.

To drain

‘P’ Trap

Figure 16: Steam Distributor/SAM-e Below Humidifier (Hose Shown)

Figure 17: Steam Under Obstruction (Copper Steam Line Shown)

Installation | 20

1 ft (30 cm) min before turn

Condensate

tee every

15-20 ft

(4.5 - 6 m)

Condensate

tee at low

points

Individually trap multiple condensate

returns before joining on common line.

To Drain

Install condensate tee

before distributor

Method for Longer Runs With Limited Vertical Space

1 ft (30 cm)

min.

Figure 18: Long Steam Run

21 | Installation

Caution:

 Wiring to be performed by a licensed Electrician.  All SE humidifiers operate on 120 VAC, single phase, 60 HZ power. Refer to

specification label for power requirements.

Neutral

Ground

L1 Neutral

Ground

SETC / P Primary Power

Single Phase Supply

Note: 1

Dedicated external fused

disconnect must be installed. Fusing must not exceed max circuit protection as indicated

on the specification label.

Ensure that adequate power is

available to carry full humidifier amp draw as indicated on the

specification label.

All wiring to be in accordance with national and local electrical codes.

E X

High voltage

terminal block

Knockouts provided in top and bottom panels. Install strain relief (by others)

Dedicated circuit breaker or fused

disconect.

Electrical

Figure 19: Primary Power Connection

Installation | 22

Note: Regardless of selecting on/off or modulating control method, Nortec humidifiers must have a closed circuit across their on/off security loop control terminal to operate. Nortec highly recommends the use of a high limit humidistat and an air proving switch in series for this function.

Caution: Failure to wire the humidifier in accordance with the wiring instructions could cause permanent damage. Such errors will void the warranty.

2 3

10 ft min.

Humidity Control

(return air duct or in room)

Duct High

Limit

Air

Proving

Switch

External Controls

Control Wiring

Controls are available from Nortec as accessories. If controls were not ordered with humidifier they must be supplied by others. The following information is relevant to all controls, factory supplied or otherwise. For wiring use minimum of 18 AWG and keep as short as possible.

The SETC humidifier can be operated with two modulating inputs. The SEP has one modulating input which can be used for a duct high limit or humidity control. Both the SETC and SEP can be operated as On/Off. See Control Setting on page 53 for SETC configuration and On/Off or Modulating Control (J10) on page 61 for SEP configuration.

Control Location

Figure 20: Control Location

1 Air Proving Switch

 Locate so that it can sense air flow or lack of it.

2 Duct High Limit

 SETC can be modulating, On/Off, or a humidity sensor. SEP can be modulating or On/Off.  Locate at least 10 feet from steam distributor or far enough that under normal conditions

steam is fully absorbed.

3 Humidity Control

 SETC can be Modulating, On/Off, or a Humidity Sensor. SEP can be modulating or On/Off.  Can be located either in return air duct (preferred) or in room being humidified.  Mount in area representative of room humidity (draft, doorways, sunlight, or overhang such

as a shelf can affect reading). Avoid placing near discharge diffuser of humidified air.

23 | Installation

Figure 22: Digital On/Off

Note: 1

2 3

Air Proving

Switch

Humidity Control

2548731 - On/Off

Wall Humidistat

Duct High Limit

2548732 - On/Off

Duct Humidistat

Humidifier Terminal Strip

Knockouts provided in top and bottom panels.

Install strain relief (by others)

Humidifier will run when circuit between terminal 1 and 2 on humidifier is closed. Terminal 1 is 24VAC Hot, turn unit off to avoid shorting while wiring. Digital Humidistats require 24 VAC power from terminals 1 and 3 of humidifier. Humidity Control can be wall mounted as shown or return air duct mounted.

1- 24 VAC 2 - On/Off Loop

3 - Ground 4 - Control Signal

5 - Limit Signal (SETC only) 6 - 5 VDC 7 - Ground 8 - Full Tank Blow Down 9 - Ground 10 11 - Actuator power 12 -

Actuator power

0-10 VDC Out

1 - Ground

2 - 24 VAC

3 - Common

4 - Digital Out

5 - Fan Relay

6 - Fan Relay

7 - NTC Sensor

8 - NTC Sensor

Air Proving Switch

Wire to make when

sensing air flow

Duct High Limit

2548732 - On/Off Duct Humidistat

Wire to make on drop in humidity

Humidity Control

2548731 - On/Off Wall Humidistat or,

2548732 - On/Off Duct Humidistat

S E

E X

Connect 24 VAC,

term inal 1 of humidifier to

term inal 2 of controllers.

Com

N/O

1 - Ground

2 - 24 VAC

3 - Common

4 - Digital Out

5 - Fan Relay

6 - Fan Relay

7 - NTC Sensor

8 - NTC Sensor

On/Off Control Wiring

Figure 21: On/Off Controls

Installation | 24

1 - Ground

2 - 24 VAC

6 - Analog Out

8 - Temperature

Insert On/Off

controls or jumper

between 1 and 2

1510142 - Digital Wall Humidistat

1 - Ground

2 - 24 VAC

6 - Analog Out

7 - Analog In

8 - Temperature

2520266 - Digital Duct Humidistat Package

S E

Analog Out - 3

24 VAC - 2 Ground - 1

Connect 24 VAC, terminal

1 of SETC/P to terminal

2 of controllers.

1- 24 VAC 2 - On/Off Loop

3 - Ground 4 - Control Signal

5 - Limit Signal (SETC only) 6 - 5 VDC

7 - Ground 8 - Full Tank Blow Down 9 - Ground 10 11 - Actuator power 12 -

Actuator power 0-10 VDC Out

E X T

Figure 24: Digital Modulating Humidistats

Install On/Off controls or jumper between terminal 1 and 2 of humidifier in order to run. Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring.

High Limit Humidistat must be duct mounted. It can be On/Off or modulating. Control Humidistat can be mounted in space or in return air duct and can be On/Off or modulating. The SEP can only accept one modulating signal.

Air Proving

Switch

High Limit Humidistat

Control Humidistat

Humidifier Terminal Strip

Knockouts provided in top and bottom panels.

Install strain relief (by others)

Note: 1

2 3

Modulating Control Wiring

25 | Installation

Figure 23: Modulating Controls

Air Proving

Switch

Duct High

Limit

2520261 - Digital

Wall W/O Sensor

1509858 - Wall

Sensor

Wire wall sensor to digital display as shown

below, wire digital display to humidifier as shown

for 1510142 - Digital Wall Humidistat.

1509858 - Wall Sensor

2520261 - Digital Wall W/O Sensor

Humidifier Terminal Strip

Knockouts provided in top and bottom panels.

Install strain relief (by others)

1 - Ground

2 - 24 VAC

6 - Analog Out

7 - Analog In

8 - Temperature

1 - Ground

2 - 24 VAC

6 - Analog Out

1509858 - Wall

Sensor

2520261 - Digital Wall W/O Sensor

1- 24 VAC 2 - On/Off Loop 3 - Ground 4 - Control Signal

5 - Limit Signal (SETC only) 6 - 5 VDC 7 - Ground 8 - Full Tank Blow Down 9 - Ground 10 11 - Actuator power 12 -

Actuator power

0-10 VDC Out

Connect 24 VAC, terminal

1 of SETC/P to terminal

2 of controllers.

Figure 25: Digital Wall Humidistant – Remote Wall Sensor

Figure 26: Remote Wall Sensor Wiring

Installation | 26

Figure 28: Digital

Air Proving Switch

Duct High Limit 1509857 - 2-10V Duct Humidity Transducer

Humidity Control 1509858 - 2-10V Wall

Humidity Transducer

Install On/Off controls or jumper between terminal 1 and 2 of humidifier Terminal 1 is 24 VAC Hot, turn unit off to avoid shorting while wiring. Duct High limit can be duct humidity transducer as shown or duct On/Off humidistat. Humidity Control can be wall humidity transducer as shown, duct humidity transducer, or On/Off humidistat.

Humidifier Terminal Strip

Knockouts provided in top and bottom panels.

Install strain relief (by others)

Note: 1

2 3

1 - Ground

2 - 24 VAC

6 - Analog Out

1509858 - 2-10V Wall Humidity T ransduc e r

1 - Ground

2 - 24 VAC

3 - Analog Out

Insert On/Off

controls or jumper

between 1 and 2

1509857 - 2-10V Duct Humidity T ransduc e r

Connect 24 VAC,

term inal 1 of SETC to

term inal 2 of controllers

1- 24 VAC 2 - On/Off Loop

3 - Ground 4 - Control Signal

5 - Limit Signal (SETC only) 6 - 5 VDC 7 - Ground 8 - Full Tank Blow Down 9 - Ground 10 11 - Actuator power 12 -

Actuator power 0-10 VDC Out

E X

S E

Transducer Control Wiring (SETC Only)

27 | Installation

Figure 27: Transducers

Figure 30: Outdoor Temperature Sensor (Modulating Control)

1 - 24 VAC

2 - Temperature

2520263 - Outdoor Temperature Sensor

Connect 24 VAC, terminal

1 of humidifier to terminal

2 of controllers.

Note: 1 2 The Temperature sensor is

intended for duct mounting.

Locate the temperature sensor

near the fresh air intake. This will ensure accurate representation of the outdoor air temperature.

2548731 - On/Off Wall Humidistat or,

2548732 - On/Off Duct Humidistat

1 - Ground

2 - 24 VAC

3 - Common

4 - Digital Out

5 - Fan Relay

6 - Fan Relay

7 - NTC Sensor

8 - NTC Sensor

Insert Other

On/Off

controls

in series

1- 24 VAC 2 - On/Off Loop 3 - Ground 4 - Control Signal 5 - Limit Signal (SETC only) 6 - 5 VDC 7 - Ground 8 - Full Tank Blow Down 9 - Ground 10 11 - Actuator power

12 -

Actuator power

0-10 VDC Out

E X

S E

Optional Outdoor Temperature Reset

Figure 29: Outdoor Temperature Reset

 Each digital controller is equipped with an integrated reset function that can reduce the

setpoint during cold weather operation. This will prevent condensation on windows and building structures. The above graph illustrates how the setpoint reset feature operates.

 On modulating humidistats this feature is enabled by removing the jumper from terminals 8

and 1 on the humidistat and wiring the outdoor temperature sensor to these terminals. On On/Off humidistats this feature must be activated with the humidistat’s keypad.

 When the outdoor temperature setback feature is in effect, the humidistat will normally

display the calculated setpoint limit based on the outdoor air temperature. A snowflake will also be displayed to indicate cold weather operation. When any key on the controller is pressed, the LCD screen will display the customer specified setpoint for a short duration.

Installation | 28

9 - Ground 10 - Actuator 24 VAC 11 - Actuator Ground 12 - 0-10 VDC Out

Y/Bk

Note: 1 Wire the CV valve actuator

to the humidifier’s low voltage

termina l strip. 2 Use minimum of 1 8 AWG wire and ke ep a s s h o r t a s p o ss ible. 3 After installation a n d p o we r in g

humidifier verify that tra ve l o f actua to r a t fu ll de man d is to th e fully ope n p o sition .

SE 1050 low

voltage terminal strip

9 - Ground 10 - Actuator 24 VAC

11 - Actuator Ground 12 - 0-10 VDC Out

Y/Bk

SE 50 - 750

Actuator

SE 1050

Actuator

SE 50 - 750 Terminal Strip

1 - Ground

2 - 24 VAC

6 - Analog Out

8 - Temperature

1510142 - Digital Wall Humidistat or,

2520266 - Digital Duct Humidistat Package

1 - 24 VAC

2 - Temperature

Insert On/Off

controls or jumper

between 1 and 2

2520263 - Outdoor Temperature Sensor

Connect 24 VAC, terminal

1 of SE to terminal

2 of controllers.

Note: 1 2 The Temperature sensor is

intended for duct mounting.

Locate the temperature sensor

near the fresh air intake. This will ensure accurate representation of the outdoor air temperature.

E X

S E

1- 24 VAC 2 - On/Off Loop

3 - Ground 4 - Control Signal

5 - Limit Signal (SETC only) 6 - 5 VDC

7 - Ground 8 - Full Tank Blow Down 9 - Ground

10 11 - Actuator power

12 -

Actuator power

0-10 VDC Out

Figure 31: Outdoor Temperature Setback (On/Off Control)

CV Valve Actuator Wiring

29 | Installation

Figure 32: CV Valve Actuator Wiring

Steam

Unit ON

Error

Service

COMNOCOMNOCOM

COM

Remote Relay Board Wiring

The SETC (not SEP) remote relay board provides the output signal for the CV Valve Actuator and includes 4 relays that can provide remote status indication. The remote relay board is located as shown in Figure 33: Remote Relay Board Wiring. The PCB with the relays includes markings which indicate the function of each terminal on the board. The relays indicate the following status;

1 Unit On – The normally open relay is closed when the humidifier has power and the On/Off

switch is set to on.

2 Steam – The normally open relay is closed when the control board sends a signal to the CV

valve actuator to open the CV valve and steam is being produced.

3 Service – The relay can be wired to open (NC) or close (NO) when a warning is displayed on

the humidifier display and the yellow service LED is illuminated.

4 Error – The relay can be wired to open (NC) or close (NO) when a fault is detected by the

humidifier controls.

Figure 33: Remote Relay Board Wiring

Installation | 30

Daisy chain pole 2 and 3 of terminal of the driver board.

Do not reverse polarity. Do not connect to pole 1 or 4.

Note:

J2a-RS485

Master

Slave 1 Slave X

Daisy Chain up to 16

Humidifiers

Staged Modulation Wiring (SETC Only)

 Connect up to 10 units (equivalent of 10,500 lb/hr (4,770 kg/hr)) using 18-24 AWG multi-

strand, twisted pair, shielded cable.

 Connect humidistats/transducers and On/Off safety loop to master unit only.  See Multi Mode on page 54 and Multi Unit Op. Range on page 56 for software configuration.

31 | Installation

Figure 34: Staged Modulation Wiring

Note: For installation of options and accessories follow the instructions that are provided with

them.

Options and Accessories

Remote Blower Pack

Remote blower packs are available for the SETC/P for applications where steam for humidification must be introduced directly into the space being humidified. For instructions on installing the remote blower pack refer to the installation instructions supplied with it. The steam line and condensate return instructions provided in this manual are also applicable to remote mounted blower packs.

The blower packs include a safety relay which should be used to prevent the humidifier from operating if the blower packs do not have power. Wire humidifier security loop in series through all blower packs and other On/Off controls.

Drain Water Cooling (External)

Pneumatic and electric drain water coolers are available from Nortec for installation outside the humidifier or on condensate drains from steam traps, distributors, and SAM-e headers. If condensate cannot be routed back to the humidifier tank via the humidifier’s fill cup then an external drain water cooler may be required to meet regulations restricting the temperature of hot water that can be fed to drain. The external drain water cooler is only available for field installation.

Installation | 32

Start Up

34 Installation Check 35 SETC User Interface

35 Manual Drain Switch

36 Start Up Procedure 37 Status Screens 39 Nortec Digital Controls 40 Staged Modulation (SETC Only) 40 Nortec LINKS 2 40 Nortec ONLINE 41 SETC/P Pre-Start Up Checklist 42 SETC/P Start Up Checklist

33 | Start Up

Steam Line

- Adequate slope

- No restrictions

- No kinks (hose)

- Condensate traps on long runs

P Trap(s) .

with 12 in (30 cm) min drop(s) .

Disconnect

Correct voltage

amps phase

On/Off Controls

(Air Proving)

in series between

terminal 1 and 2

Min 10 ft (3 m)

Control

- Wired to terminal 4.

- On/Off in series between terminal

1 and 2.

- In return duct or location which represents humidified

space (no drafts,

not by door, not by diffuser).

1/2 in line min 30-80 PSI

Not plastic drain, Not to sink.

High Limit

- Wired to terminal 5

- On/Off in series

between terminal

1 and 2

Mounting

- Unit level

- Service clearance

- Properly anchored if on stand

Spec label

Calculated absorption distance

to any obstruction or 8 - 10 ft

(2.4 - 3 m) if unknown.

2 x duct height

from fan or

transition

Boiler Condensate

- Gravity fed to boiler or lift pump

Air gap

Boiler Steam

- Max 15 psi

- Safety valve if from med. or high press. boiler.

- Design pressure at 100% demand.

Actuator,

- Opens CV Valve fully at 100%

demand

- Closes fully at 0%.

Installation Check

Before turning on power to the SE, inspect the installation to insure that it was carried out correctly. Refer to Figure 35: Installation Check, to the SETC/P Pre-Start Up Checklist on page 41, and to the chapter on Installation that starts on page 9.

Figure 35: Installation Check

Start Up | 34

Manual drain switch

Figure 37: Manual Drain Switch

LCD Display and Input Buttons

.(Buttons used to navigate

status screens and configure the humidifier, correspond to icons on the display)

Status LEDs

Software Drain Button

(Initiates a software controlled drain)

On/Off Switch

(Turns humidifier On/Off)

SETC User Interface

Manual Drain Switch

Figure 36: SETC User Interface

The SETC/P has a manual drain switch that can drain the tank even if software is not functioning. To drain the tank put the switch into the drain position. For normal operation the switch should be in the off position.

35 | Start Up

Warning: Damaged units or improperly installed units must not be operated. Damaged or improperly installed units may present a danger to persons and property.

Request – xx%

Idle 0 lb/hr

04/30/09 14:25:22

Security loop: Closed

Note: on initial startup with cold water in the SE’s tank it may take 5 to 15 minutes

(depending on unit size) for the SE to reach a full boil and produce its rated steam.

Note:

 Pressing the ESC key on the keypad will interrupt the float and drain test and the

humidifier will go straight to normal operating mode.

 If an error is detected during the self-diagnostic sequence a Fault will be displayed.

See troubleshooting section for information on diagnosing and correcting faults.

 SEP does not have an LCD display. The information on the SETC’s LCD depends on

the SETC’s configuration and actual operating conditions. It may vary from display

shown.

Start Up Procedure

1 Examine the humidifier and installation for damage and or improper installation.

2 Open the supply water shut off valve. If the auxiliary drain valve is installed ensure it is

closed.

3 Slowly open boiler steam isolation valve to allow boiler steam into the steam supply line up

to the CV valve.

4 Turn on the main power using the installed disconnect then turn the On/Off switch on the

front of the humidifier to On.

The LCD display will illuminate and the humidifier will perform a self-diagnostic sequence during which the LED’s and internal components will be momentarily activated. The SE will then begin filling with water. The fill time is between 10 and 30 minutes depending on the size of the unit.

5 Once the water level is close to the top of the tank the LED

lights on the SE’s float chamber will light up and indicate the water level. On start up the SE

will perform a float and drain pump test by first filling until just the green LED is lit and then draining until just the red LED is lit. After the float and drain test the humidifier is in normal

operation mode.

6 If On/Off or a control humidistats have been installed check and adjust the control setpoint

on the control and high limit humidistat (see Nortec Digital Controls on page 39). If transducer controls have been installed then adjust the humidity setpoint using the keypad and display (see Transducer Control on page 39)

7 When either the external humidistat or internal controller generate a demand for humidity

higher than 15%, the security loop is closed, and the float chamber indicates the tank is full the SE will transmit a signal to the CV valve to open. Steam will flow into the SE’s heat exchanger(s) and the SE will heat the water in its tank.

Start Up | 36

Request – xx%

Idle 0 lb/hr 04/30/09 14:25:22 Security loop: Closed

CONTROL Man Cap. : 100% Demand : 55% Limit : 80% Output : 0 lb/hr

CONTROL Man Cap. : 100% RH CNT : 55% CNT Set-Pt : 50% RH Limit : 100% LIM Set-Pt : 70% Output : 0 lb/hr

HUMIDIFIER Model : SETC 750 Capacity : 750 lb/hr Multimode : StandAlone REG Mode : Demand Software : XVXX Press. In : 15 psi

Caution:

 Improper control configuration can result in over humidifying which can result in

damage to property.

 See Advanced Control Configuration if the controls displayed in the control

information screen do not match those connected to the humidifier.

Request – 100%

Idle 750 lb/hr 04/30/09 14:25:22 Security loop: Closed

8 The green humidifying LED on the front of the humidifier will light up and the display will

indicated “Humidifying” and the amount of steam being produced (SETC only).

Status Screens

In addition to the main status screen the SETC includes several status screens which provide additional information about the humidifier. The additional screens can be reached by pressing the buttons corresponding to the left and right arrow key on the LCD display.

Main Status Screen

This screen reports the current request for humidity, status, output, date and time, and security loop status. If status is not idle or humidifying the left arrow key becomes a “?”. If the button corresponding to the arrow key is pressed the display will give additional information on the status of the humidifier.

Control Information Screen

Output is the lb/hr steam output of the unit. Man Cap is the user configured capacity limitation. Depending on the control configuration the screen also reports the current inputs of channel 1 and 2. If the unit is configured for internal control it also provides the current humidity and setpoints.

Humidifier Information Screen

37 | Start Up

Model is the humidifier model type. Capacity is maximum output if the unit is supplied 15 psi steam. Multimode indicates if the humidifier is operating as part of a group controlled by a single control signal REG Mode is the configured control method. Software is the installed software version.

Analog Output Output Signal : X.X VDC Capacity : xxx lb/hr Total O/P : xxx lb/hr Tank Monitor : On/Off Quick Warm : On/Off Press. Base : On/Off

100%

-4 hrs 0 hrs Demand: 45%

TANK STATUS Fill Valve : ON/OFF Drain Pump : ON/OFF Float Level : 5 Run Time : xxx hr Serv. Time : xxx hr Serv Due : xxx hr

SENSOR INPUTS Sec. Loop : Closed Tank Temp. : Closed

FEATURES LIST Idle Mode : Idle Drain FTBD : On/Off Time Prop. : On/Off BD Rate : 25% Drain Cool :On/Off/Smart Float Check : On/Off

Press. In is the boiler steam supply pressure.

Analog Output Information

Output Signal is the signal currently being output to the actuator. Capacity is maximum output based on actual boiler steam press. Total O/P is the current output of the humidifier. Tank Monitor indicates if tank monitoring is On/Off. Quick Warm indicates if Quick Warm is On/Off. Press Base indicates if output is based on actual steam pressure.

Tank Status

Fill Valve indicates if the fill valve is open or closed. Drain pump indicates if the drain is on or off. Float level indicates the current float level. Run Time is total weighted operating hours since last service. Serv Time is the service interval set for the humidifier Serv Due is the time remaining before service is required.

Sensor Inputs

Sec. Loop indicates if the security loop is open or closed. Tank Temp indicates if the tank is cold (open) or hot (closed)..

Features List

Idle Mode indicates what the humidifier is configured to do when there is no demand. FTBD indicates if full tank blow down is enabled. BD Rate indicates water drained for scale control as % of output Drain Cool indicates configuration of drain water cooling feature Float Check indicates if the humidifier will perform float checks.

Operational Hours

Total indicates the number of hours the humidifier has been producing steam.

Weighted indicates the total amount of steam the humidifier has produced expressed as number of hours running at 100% output.

Trend Graph

This graph provides a history of the humidifiers output for the past 4 hours. It displays a percentage of full output which corresponds to the demand signal. The current demand signal is displayed at the bottom of the screen.

Start Up | 38

Output signal is shown on modulating controller proportional to the demand.

State of On/Off humidistat

Setpoint (RH%)

Humidity (RH %)

Indicates the

humidistat is on.

A half moon

indicates it is off.

Snowflake indicates the

setpoint is being

overridden by outdoor

temperature.

Option button accesses sensor calibration.

See troubleshooting

Increase / Decrease Setpoint

Power button turns

off the humidiistat if

pressed for 2 seconds

Nortec Digital Controls

Nortec provides optional On/Off, Modulating Control, or Transducer digital controls. Figure 38 and Figure 39 show the function and meaning of the Digital Control’s display and buttons. All controls are available either wall mounted or with a remote sensor for duct mounting.

Modulating Control

The modulating controls use a PI control algorithm to transmit a 0-10V control signal to the humidifier. Adjust the setpoint to the desired setting by using the up/down arrow buttons on the controller.

On/Off Control

The On/Off controls use a PI control algorithm to open and close a relay that opens and closes

the humidifier’s On/Off loop. Adjust the setpoint to the desired setting by using the up/down

arrow buttons on the controller.

Transducer Control

The transducer controls transmit a 2-10V control signal proportional to the sensed relative humidity to the humidifier. Humidity setpoint is not set at the transducer. The setpoint is set on the SETC’s display and keypad.

Note: It is possible to field calibrate Nortec Digital controls if the displayed humidity is found to

be different than a known trusted source. See Digital Humidistat on page 75 of chapter on Troubleshooting.

39 | Start Up

Figure 38: Modulating and On/Off Digital Control Operation

Humidity (RH %)

Option button accesses

sensor calibration.

See troubleshooting

Adjust calibration

while in calibration

mode

Power button will

display “NO” if an

attempt is made to

turn off the transducer.

Figure 39: Transducer Control Operation

Staged Modulation (SETC Only)

Start up of each humidifier configured and installed for Staged Modulation is the same as starting up standalone humidifiers with the exception that for the humidifier to fill and produce steam the demand to the master unit must be greater than the Multi Unit Op. Range setting of the unit being started. (Example for a slave unit configured to operate between 20 and 30% the demand to the master must be greater than 22%)

Each unit connected in a staged modulation system will display its demand as a percentage of the range for which it is configured. Example, a slave unit configured to operate between 20 and 30% demand will display a demand of 50% when demand to the master is 25%.

Note: See Multi Mode on page 54 and Multi Unit Op. Range on page 56for software

configuration. See Staged Modulation Wiring on page 31 for control wiring of humidifiers in a Staged Modulation system.

Nortec LINKS 2 (SETC Only)

Nortec LINKS 2 is an option that can be integrated with the SETC. It allows a Building Management System to monitor and / or control the humidifier. For complete information about Nortec LINKS 2 and its operation and configuration, go to www.humidity.com and look up the Nortec LINKS 2 manual.

Nortec ONLINE (SETC Only)

Nortec ONLINE is an option that can be integrated with the SETC. It allows a user to monitor their unit from any computer with an internet connection by logging in to www.norteconline.com. It can also be configured to send service reminders and fault warnings when they occur.

Start Up | 40

SETC/P Pre-Start Up Checklist

Unit Serial #: _________________ Tag: _______________

Unit type: _______ __________ Voltage: ________V/_____ph Steam output: ______lb/hr

Customer/Job: Address:

Water Quality:

 Potable (0-12 grains/gal, 0-14 ppm Silica, 0-25 ppm Chlorides)  RO  DI 

Humidifier Mounting: (Clearances around the unit Acceptable Obstruction)

 Level  Front/Side Clearance  Anchored (if on stand) 

Steam Line(s):

 Slope up (min 2 in/ft).  Slope down (min 0.500 in/ft)   Diameter / Size Material  Low point condensate traps  No Hose Kinks / Restrictions   Insulated  Type of Insulation

Condensate Line(s):

 P Trap min 8 in. (20 cm) plus duct static pressure  P Trap min 12 in drop 

Water Line:

 Can provide required flow  Water pressure: 30-80 psig 

Drain Line:

 Air gap within 3 ft of the unit  Diameter / Size  Auxiliary drain connected with shut off valve 

Boiler Steam

 Boiler Pressure psi Pressure to humidifier psi  15 psi relief valve if med/high press boiler   Actuator closes and opens CV valve fully  Design pressure at CV valve   Condensate return Gravity feed  or pump 

Wiring:

 Wiring connections and connectors secured yes  no 

Controls:

 Control Location Control to Terminal 4   High Limit Location High Limit to terminal 5 

Power:

 Voltage, amp, fuse per Spec Label: yes  no   Disconnect switch located close to humidifier yes  no 

Inspected by: Date of inspection: ______/_______/______

Company:

41 | Start Up

Note: 1) It can take 10 to 30 minutes for the tank to fill depending on humidifier size.

2) Once filled it can take 5 to 15 minutes (depending on humidifier size) for a cold tank to come to a full boil.

SETC/P Start Up Checklist

Unit Serial #: _________________ Tag: _______________

Unit type: _______ __________ Voltage: ______V/____ph Steam output: ______ lb/hr

Customer/Job: Address:

Preliminary:

 Pre-start-up checklist completed? yes  no 

If no, perform Pre-Start-up Checklist before starting humidifier.

Start-Up Procedure:

The prerequisites for the humidifier activating the CV valve actuator to make steam are as follows:

 Water supply valve opened yes  no   Boiler steam isolation valve open yes  no   Mains disconnect switched on yes  no   Turn On/Off switch on yes  no   On/Off Security loop (Terminal 1 and 2) closed. yes  no   Demand greater than 15% yes  no 

Controls:

 Installed Controls Match Configuration yes  no 

 Control Setpoint: High Limit Setpoint:

 Demand (Modulating Humidistat) yes  no 

 Sensed RH < Setpoint (Transducer) yes  no 

The Humidifier will undergo a self-test when the power is turned on activating the LED’s and other internal components followed by a float test.

If the above listed prerequisites are fulfilled the humidifier will fill the tank, open the CV valve and begin normal operation.

Remarks:

Started by: Date of Start Up: _______/_______/______

Company:

Start Up | 42

Operation

44 SETC LED Status Lights 44 SEP LED Status Lights 45 How the Humidifier Works

45 Steam Generation

46 Drains

46 Steam Distribution

47 Selecting an RH Setpoint 49 SETC Humidifier Configuration

49 Navigating the SETC Software

49 Main Menu (SETC Password)

50 Service Level

51 User Defined Settings

53 Control Setting

56 Multi Unit Op. Range

57 RH Settings

59 Diagnostic Menu

60 SEP Humidifier Configuration

43 | Operation

Fault LED On

Indicates the controller has detected a fault condition and stopped humidifier.

Check display for fault information

Service LED On

Indicates that service may be required

or that a warning condition exists.

Check display for warning information

Service LED Blinking

Indicates drain button has been pushed

and unit is draining.

ON LED On

Indicates steam is being produced.

ON LED Blinking

Indicates demand with safety loop open.

OFF

DRAIN

SERVICE

FAULT

DEMAND

DEMAND LED On

Indicates steam is being produced.

DEMAND LED Blinking

Indicates humidifier is in standby waiting

for a demand.

SERVICE LED Flashing

Indicates the controller has detected a

fault. The flash sequence of the LED

indicates which fault has been detected.

FAULT LED On

Indicates the controller has detected a fault condition and stopped humidifier.

Read Service LED’s flash sequence to

determine fault detected.

SETC LED Status Lights

The keypad and display panel includes 3 LED’s which provide information about the humidifier’s

current status.

SEP LED Status Lights

Figure 40: SETC LED Status Lights

Figure 41: SEP LED Status Lights

Operation | 44

Steam Line

Steam Distributor

‘P’ Trap

Dual Fill Valve

Fill Box

Float Chamber

‘P’ Trap /

Overflow

Vacuum Break

Drain Pump

Auxiliary Drain

CV Valve

CV Valve Actuator

Steam Trap

Condensate Return to

Boiler

Drain Outlet

Heat Exchanger

Tank

Boiler Steam

Cooling to Float Chamber

Lower Mixing Box

Humidifier Schematic

How the Humidifier Works

The SETC/P is an atmospheric steam generator that uses energy from pressurized steam flowing through a heat exchanger submerged in water to generate steam. The SETC/P is designed for air humidification via steam distributor, blower pack, or steam manifold (SAM-e).

Steam Generation

 After initial start-up and tank filling the humidifier will sit in standby mode, awaiting a call for

 When a call is received, the humidifier will send a signal to the electric actuator. The

 Energy from the boiler steam is transferred to the fresh water tank through a heat exchanger

45 | Operation

humidity.

Figure 42: Humidifier Schematic

actuator will open as required and the flow of boiler steam will begin.

inside of the unit. This causes the water to boil. Full boil from a cold tank can take up to 15 minutes. On SETC models, the Keepwarm feature can be activated to reduce boil time, see Idle Mode on page 52.

 Once the humidifier has reached full boil, the humidifier will modulate the actuator,

controlling the flow of steam into the unit. This will allow the unit to reduce its output level as the humidity levels in the space being humidifier are reached.

 During the boiling process minerals are left behind from the water. The unit will occasionally

activate the drain pump to flush out some of the minerals in the water and reduce the concentration in the tank. The fill valve will also be activated periodically to replace water that is boiled off during normal operation.

 When the demand to the unit ceases, the unit will close the steam valve and steam

production will stop. The unit will enter standby mode and await a call for humidity. If Keepwarm is activated (SETC only), the CV valve will be opened periodcally to heat the tank.

Drains

 As steam is produced minerals are left behind in the SE’s tank. The SE performs periodic

drains to reduce the amount of minerals that will precipitate as scale.

 In general more frequent drains result in less maintenance. The amount of water drained to

control mineral concentration in the tank can be configured in the SETC’s software.

 To cool drain water the SE activates the fill valve whenever the drain pump is activated.

Cool fill water flows down from the fill box and blends with hot tank water in the lower mixing box before being drawn into the drain pump. The drain cooling feature can be deactivated via software (see Drain Cool on page 51).

Steam Distribution

Steam generated by the humidifier may be introduced into the air in several different ways. The most common method for adding the steam into the air is to mount a steam distributor tube in a supply air duct as shown in Figure 42: Humidifier Schematic. For larger ducts or larger loads it is also common to use a steam manifold with a single steam line connection and multiple tubes for distributing the steam, see Figure 43: SAM-e Manifold. For introducing steam directly into a room, remote mounted blower packs are used see Figure 44: Remote Blower Pack.

Steam Line

The steam line between the tank steam outlet and the distributor may be Nortec steam hose, copper pipe, or stainless steel pipe or tube. The SETC/P is an atmospheric steam generator so it is very important no restrictions are present in the steam line and that the steam line is sized properly to carry the full output capacity of the humidifier. It is also important to minimize the length of steam lines. See Steam Lines and Condensate Returns on page 17 for information on selecting steam lines and maximum recommended lengths.

Whenever steam is distributed condensate is formed in the distribution system and steam distributor, manifold, or blower pack. Insulating steam lines is one important way to reduce the amount of condensate formed. Steam lines must be sloped so that condensate does not collect in the lines and create a restriction to steam flow.

Condensate Return

The condensate must be collected and removed from the system so that it does not build up and leak into the duct (or room if blower pack is used). Condensate must be collected and fed to drain.

Operation | 46

Note: The job site design may have specified a setpoint chosen specifically for the site. Refer to site documentation and where possible use setpoints specifically determined for the site.

‘P’ Trap

Condensate line

Insulated copper

steam line. Support

so weight is not on

steam outlet.

SAMe Manifold

Selecting an RH Setpoint

The optimum humidity setpoint depends on the reasons that a space is being humidified. The “ASHRAE Handbook – HVAC Applications” recommends specific design relative humidities for specific applications. See also Nortec publication “When You Need Humidity” (Form 124A) for more information on humidity settings.

Health and Comfort - The benefit of humidity is most pronounced for health and comfort in the 40-60% range. A humidity setting of 40-50 % is recommended for this purpose to prevent over humidifying.

Temperature Setback - In cold climates it is often necessary to reduce the humidity level in a space to prevent build up of condensation on the inside of exterior walls, windows, and trim. It is highly recommended that the temperature setback function of the Nortec digital controls be used under these conditions to prevent damage from condensation. The digital control with an outdoor temperature sensor installed will automatically setback the humidity setpoint to correspond with outdoor temperature.

Duct High Limit – The duct high limit is intended to prevent saturation and wetting in duct work at high load conditions. Nortec recommends a setting of 85% for the duct high limit. It may be necessary to reduce this setting If the duct work is very cold or in contact with exterior cold surfaces.

47 | Operation

Figure 43: SAM-e Manifold

Provide 120 V

disconect for

blower packs

power.

Wire blwoer pack safety loop terminals in series with humidifier

safety loop.

Balance steam

line length to all

blower packs

Insulate steam lines

Condensate to drain

Oversize condensate line to combine multiple

condensate returns

Blower pack condensate dain

and ‘P’ Trap

Blower PackBlower Pack

Figure 44: Remote Blower Pack

Operation | 48

Password 0335

Enter Code

Confirm with Set

Menu Set

Request – 100%

Idle 30 lb/hr 04/30/09 14:25:22 Security loop: Closed

Menu ?

Main Menu Service Level User Defined Settings Control Settings Diagnostics

Menu Set

Service Level

Request – 100%

Idle 150 lb/hr 04/30/09 14:25:22 Security loop : Closed

Menu ?

Set P 45%

45 %

ESC Set

45%

Screen Displays

Press to go

down a

menu level

Press to

go left

/right one

screen

?=Press for

information

about current

warning or fault

message

Press to go

up a menu

level

Press to increase/ decrease

value

Press to

setting and

go up a

level

SETC Humidifier Configuration

Navigating the SETC Software

The four input buttons below the digital display are used to navigate in the SETC’s software and

to enter values. The function of the four buttons changes depending on what is being displayed on the screen. In all cases 4 icons representing the functions of the buttons are shown at the bottom of the screen.

Figure 45: Navigating the SETC Software

Main Menu (SETC Password)

The menu levels of the SETC are password protected to prevent configuration changes by unauthorized persons. In order to access the menu level press the button corresponding to the Menu icon and when prompted enter the password 0335.

49 | Operation

Enter Password

Press the Menu button from any status screen. Enter the user level code 0335 using the up arrow to change the value of each digit and the right arrow to move to the next digit. Press the Set button.

Main Menu

From here you can access all user configurable settings. Select any sub-menu by using the up/down arrow buttons and pressing Set when the desired one is highlighted. Note: Do not make changes unless you are familiar with the software.

Service Reminder 500 hr 500 hr

Menu Set

500

Service Level Service Reminder :500 Tank Drain Tank PreClean Reset Error History Reset Serv. Reminder

Menu Set

Service Reminder : 500

Interrupt Operation

And Drain Tank?

Menu Yes No Set

Tank Drain

Interrupt Operation?

(This Operation

Can Take >1 hr)

Menu Yes No Set

Tank PreClean

Reset Error History

are you sure?

Menu Yes No Set

Reset Error History

Reset Serv. Reminder

are you sure?

Menu Yes No Set

Reset Serv. Reminder

Service Level

The selections in the Service Level allow you to reset service reminders and the fault history. Press Set while highlighting Service Level in the Main Menu.

Service Reminder

Sets the maintenance time interval for the humidifier based on run time at 100% output. The controller will display a warning when the time expires. (Default = 500 hr)

Tank Drain

If the yes button is pressed the controller activates the drain pump and empties the tank.

Tank Pre Clean

Performs a series of tank flushes in preparation for regular maintenance to remove loose scale that may be present in the tank.

Reset Error History

Deletes the list of errors stored in the error history. The Error History is located in the Diagnostics Menu. Resetting the error history is not normally required, but can be done after repairs to remove faults that are no longer needed.

Reset Service Reminder

Resets the service reminder after the humidifier has been serviced.

Operation | 50

User Defined Settings Drain Cool : Off BD Rate : 25% FTBD : Off FTBD Time : Off FTBD Hours : 100 Idle Mode : Idle Drain Idle Time : 72 hr Fill Corr : 100% Drain Corr : 100% Float Ck : 23:30 Date : 06/27/09 Time : 13:22 Unit : lb/hr Language : English Contrast : 10 Leak Ck : Off

Menu Set

Drain Cool : On

Drain Cool On Off On Smart

Menu Set

BD Rate : 25%

Blowdown Rate 25%

Menu Set

25 %

FTBD Time : Off

FTBD Time Hour 23

Minute 30

Menu Set

Hour 23

FTBD Hours : 100f

FTBD Hours 100 100

Menu Set

100

FTBD : Off

Full Tank Blowdown Off On On

Menu Set

Off

User Defined Settings

The selections in User Defined Settings allow you to configure most user configurable features available with the SETC. Press Set while highlighting User Defined Settings in the Main Menu.

Drain Cool

Selects whether drain water cooling will be performed by adding fill water to drain water. Off = fill valve not activated during drain. On = fill valve activated whenever drain pump is on, Smart = fill valve only activated with drain pump when tank is hot. (Default = Smart)

51 | Operation

Blowdown Rate

Sets the amount of water as a percentage of steam produced that will be drained to control mineral concentration in the tank. (Default – 25%)

Full Tank Blowdown

Sets whether the tank will be periodically flushed to help flush minerals and scale. Blowdown frequency is controlled by the FTBD Hours parameter below. (Default = On)

FTBD Time

Sets the time of day when a full tank blow down will occur to avoid interrupting humidifier operation during critical times. (Default = 23:30)

FTBD Hours

Sets the number of hours between full tank blow downs. Hours are accumulated on a weighted basis (1 hour at 50% demand = 0.5 hrs). (Default = 100 hr)

Idle Mode : Idle Drain

Idle Mode Idle Drain Idle Only Idle Drain Keep Warm

Menu Set

Idle Drain

Idle Time : 72 hr

Idle Time 72 hr

72 hr

Menu Set

72 hr

Fill Corr : 100%

Fill Correction 100 %

100 %

Menu Set

100 %

Drain Corr : 100%

Drain Correction 100%

100 %

Menu Set

100%

Float Ck : 23:30

Float Ck Hour : 23 Minute : 30 Status : On

Menu Set

Hour : 23

Date : 27/06/09

Date Day : 27 Month : 06 Year : 09

Menu Set

Day : 27

(User Defined Settings Continued)

Idle Mode

Sets what the humidifier will do during periods with no demand. Idle Only = Do nothing. Idle Drain = Drain the tank if there is no demand (wait time set with idle Time parameter). Keep Warm = periodically open CV valve to keep tank warm. for a demand and drain the tank if no demand (Default = Idle Drain)

Idle Time

Sets the time without demand before the Idle Drain function will drain the tank (if activated). (Default = 72 hr)

Fill Correction

Increases or decreases the length of fill valve pulses to compensate for abnormal site conditions. (Default = 100%)

Drain Correction

Increases or decreases the length of drains to compensate for abnormal site conditions. (Default = 100%)

Float Check

Sets the time of day when a float check to verify drains and float operation will take place. Can also disable the float check. (Default = 23:30 and On)

Date

Sets the date. Selecting Day, Month, or year takes the user to a submenu that allows the value to be increased or decreased by pressing up/down arrows. Set accepts the setting.

Operation | 52

Time : 13:22

Time Hour : 13 Minute : 22

Menu Set

Hour : 13

Unit : lb/hr

Unit Steam lb/hr lb/hr kg/hr

Menu Set

lb/hr

Language : English

Language English English French Dutch German

Menu Set

English

Contrast : 10

Contrast 10

Menu Set

Leak Ck : Off

Leak Check Off Off On

Menu Set

Off

CAUTION: Improper control configuration can result in over humidifying which can result in damage to property.

(User Defined Settings Continued)

Time

Sets the time of day. Selecting Hour or Minute takes the user to a submenu that allows the value to be increased or decreased by pressing u/down arrows. Set accepts the setting.

Unit

Sets the units of measure to use for display of steam output to either lb/hr or kg/hr. (Default = lb/hr)

Language

Sets the language to use for the software menu. (Default = English)

Contrast

Adjusts the contrast of the LCD display to improve visibility under different lighting conditions. (Default = 10)

Leak check

Sets whether the controller should monitor tank level during periods of no demand. If on a fault will be generated if water level drops with no demand. (Default = Off)

Control Setting

Control Setting allow you to set the type of external controls the humidifier is connected to. In most cases the SETC humidifier is factory configured to operate with the external controls that were specified for the site. Press Set while highlighting Control Setting in the Main Menu.

53 | Operation

Control Setting Source : Analog REG Mode : Demand MOD Mode : Dual CH Multi Mode : Standalone CNT Type : 0-10 LIM Type : 0-10 Short CD : On Short CD Tm : 30 s Time Prop. : Off Manual Cap : 100% Mulit Unit Op Range Modbus Settings Press Base : On Supply Press. : 15 psi RH Settings

Menu Set

Source Analog Analog Digital

Menu Set

Source : Analog

Analog

Only present if Mod Mode set to Dual CH

Only present if Short CD set to On

Only present if Multimode set to Master or Slave

Only present if Press Base set to On Only present if REG Mode set to RH (P) or RH (PI)

Regulation Mode Demand Demand On/Off RH (P) RH (PI)

Menu Set

REG Mode : Demand

Demand

MOD Mode Single CH Single CH Dual CH

Menu Set

MOD Mode : Single CH

Single CH

Multi Mode StandAlone StandAlone Master Slave

Menu Set

Multi Mode : Standalone

Standalone

(Control Settings Continued)

Source

Configures the humidifier to either accept analog control signals from a humidistat or digital signals from a Building Management System

REG Mode

Configures the type of control used with the humidifier. RH (P) is proportional only internal control based on a transducer signal. RH (PI) is proportional control with an integral.

MOD Mode

Configures the humidifier to either operate with a single channel (control only) or dual channel (control and high limit). If an On/Off high limit humidistat is used set MOD Mode to Single CH

Multi Mode

Use Multi Mode to configure the humidifier to operate as one humidifier of a group controlled by a single control signal / transducer signal. See Multi Unit Op. Range later in this section. (Default = Standalone)

Operation | 54

CNT Type 0-10 V 0-5 V 1-5 V 0-10V 2-10 V 0-16 V 32-16 V 0-20 mA 4-20 mA

Menu Set

0-10 V

CNT Type : 0-10

Short Cycle Delay Off Off On

Menu Set

Short CD : Off

Off

LIM Type : 0-10V

LIM Type 0-10 V 0-5 V 1-5 V 0-10V 2-10 V 0-16 V

3.2-16 V

Menu Set

0-10 V

Short Cycle Delay Time 30 s

30 s

Menu Set

Short CD Tm : 30 s

30 s

Time Prop. : Off

Time Proportioning Off Off On

Menu Set

Off

Manual Capacity 100%

100%

Menu Set

Manual Cap : 100%

100%

(Control Settings Continued)

CNT Type

Configures the Volt or amp range of the control signal connected to the humidifier

LIM Type

Configures the Volt or amp range of the high limit control signal connected to the humidifier. The type of control, VDC or mA, must be the same as that of CNT Type.

Short Cycle Delay

Sets whether the humidifier must stay off for a fixed period of time (set by the Short CD Tim parameter) whenever demand falls below the On threshold to prevent short cycling. (Defualt = Off).

55 | Operation

Short CD Tim

Specifies the minimum time the humidifier must remain in idle whenever demand drops to the off condition. It is only checked if Short CD is set to On. (Default = 30 s)

Time Prop

Sets whether the humidifier will run in time proportioning mode when demand is less than 15%. On results in the humidifier turning on and off for short periods of time to simulate low output. (Default = Off).

Manual Cap

Reduces the maximum capacity of the humidifier to a percentage of its full capacity. Use up/down buttons to increase/decrease and press Set to save the setting. (Default = 100%)

Multi Unit Op. Range

Multi Unit Op. Range Full Out : 20%

Zero Out : 0%

Menu Set

Full Out : 20%

Modbus Settings

Modbus Settings Parity : Even Addr : 1 Timeout : 300 s Rem Disable : On

Menu Set

Parity : Even

Press. Based : On

Pressure Based On Off On

Menu Set

NOTE: The Multi Unit Op. Range submenu is only displayed if the humidifier has been configured as either a Master or Slave. It is not displayed in Standalone mode.

(Control Settings Continued)

Multi Unit Op. Range

The SETC can be configured to network up to sixteen (10) humidifiers (or equivalent of 10,500 lb/hr) using a master slave configuration. To operate the SETC in a staged modulation system;

 The humidifiers must be connected in parallel (daisy chained) using the linkup terminal (J2a)

on the SETC driver board (See Staged Modulation Wiring on page 31).

 One humidifier must be designated the master and all others as slave units (see Multi Mode

on page 54 for software configuration). The master unit must be the unit to which external controls / transducers and safety loop are connected.

 Each humidifier in the system including the master must have the range of demand signal in

which it will operate configured (see below). Example, for four humidifiers with equal capacity set the master to operate between 0% and 25%, set the fist slave for 26% to 50%, set the second slave for 51% to 75%, and set the third slave for 76% to 100%.

The Multi Unit Op. Range submenu is used to configure the humidifier’s operating range when Multi Mode in the User Defined Settings menu is set to either Master or Slave. The menu is not displayed if the humidifier is set to Standalone operation. Access the Multi Unit Op. Range submenu by pressing the menu button while Multi Unit Op. Range is highlighted in the Control Settings menu.

Multi Unit Op. Range

Full Out sets the system demand at which the humidifier should output its full capacity. Zero Out sets the system demand at which the humidifier should shut off.

Modbus Settings

Allows configuration of communication parameters. Selecting an item brings up a screen that allows the value to be changed by using the up/down arrow keys. Rem Disable allows the user to turn the humidifier on if it has been remotely disabled.

Pressure Based

Configures the humidifier to use steam supply pressure to calculate system output. If set to off the output displayed is based on a supply pressure of 15 psi.

Operation | 56

Supply Press. : 15 psi

Supply Pressure 15 psi

15 psi

Menu Set

15 psi

Control Set Point 40% RH

40% RH

Menu Set

CNT Set-P : 40%

40% RH

Control Band 15% RH

15% RH

Menu Set

CNT Band : 15% RH

15% RH

Note: The RH Settings menu selection will only be displayed in the Control Settings menu if REG Mode is set to RH (P) or RH (PI).

RH Settings CNT Set-P : 40% RH CNT Band : 15% RH CNT Itime : 5 min LIM Set-P : 80% RH LIM Band : 15% RH LIM Damp : 5 s RH Alerts : On RH High : 75% RH RH Low : 33% RH

Menu Set

CNT Set-P : 40%

RH Settings

Only present if RH Alerts is set to On

Only present if MOD Mode is set to Dual CH

Control Integral Time 5 min

5 min

Menu Set

CNT Itime : 5 min

5 min

(Control Settings Continued)

Supply Press

Sets the steam supply pressure for the humidifier to us in displaying its steam output. It is only displayed if Press Based is set to On. (Default = 15 psi)

RH Settings

The RH Settings submenu is used to adjust setpoint, the proportional band, and the integral time if REG Mode is set to RH (P) or RH (PI) and the humidifier is connected to humidity sensors. Access the RH Settings submenu by pressing the menu key while RH Settings is highlighted in the Control Settings menu.

CNT Set-P

Sets the humidity setpoint value. The humidifier will attempt to maintain this humidity level in the space where the control transducer is installed.

CNT Band should not normally be changed. The CNT Band setting adjusts the band within which the humidifier will modulate between 0 and 100% output. (Default = 15%)

57 | Operation

Int Time should not normally be changed. Int Time adjusts the frequency at which the controller corrects for proportional control error. It is only displayed if REG Mode is set to RH (PI) (Default = 5 min)

Limit Set Point 80% RH

80% RH

Menu Set

LIM Set-P : 80%

80% RH

Limit Band 15% RH

15% RH

Menu Set

LIM Band : 15% RH

15% RH

Limit Damping 5 s

5 s

Menu Set

LIM Damp : 15% RH

5 s

RH Alerts On On Off

Menu Set

RH Alerts : On

RH High 75% RH

75% RH

Menu Set

RH High : 75%

75% RH

RH Low 33% RH

33% RH

Menu Set

RH Low : 33% RH

33% RH

(RH Settings Continued)

LIM Set-P

Sets the duct high limit setpoint value. As RH in the duct approaches the high limit the output of the humidifier will be throttled back to prevent wetting the duct. (Default = 80%)

LIM Band

Should not normally be changed. The LIM Band setting adjusts the band within which the humidifier will throttle down the humidifier output from 100 to 0%. (Default = 15%)

Limit Damping

Sets the number of seconds the sensed RH must exceed the limit band before output is throttled down. (Default = 5 s)

RH Alerts

Sets whether the humidifier will display warnings when humidity rises above or falls below configured limits. (Default = Off)

RH High

Sets the RH level above which the humidity must rise before a warning is generated. Warning is only generated if RH Alerts is set to on.

RH Low

Sets the RH level below which the humidity must fall before a warning is generated . Warning is only generated if RH Alerts is set to on.

Operation | 58

Diagnostic Menu Fault History Service History Output Test Remote Test

Menu Set

Fault History

04.14.07 21:48 E19A

03.20.09 02:35 E19A

Menu Set

Service History

04.21.07 09:10

03.21.09 10:10

Menu Set

Output Test

Inlet Valve: Off

Menu Set

Remote Test

Steam Relay: Off

Menu Set

Diagnostic Menu

The Diagnostic Menu provides a historical list of errors and service recorded by the humidifier’s software as well as providing the ability to manually activate humidifier components for troubleshooting purposes. Press Set while highlighting Diagnostic Menu in the Main Menu.

Fault History

Displays a list of faults which the controller has recorded. It shows the date and time at which the faults occurred. Refer to Table 13: Troubleshooting Warnings and Faults for meaning of codes and suggested actions to correct faults.

Service History

Displays a list of service that has been performed on the humidifier. It displays the date and time of service.

Output Test

Provides a means for activating all humidifier components (inlet valve, drain pump, etc.) for diagnostic purposes. Components can be activated one at a time. Scroll to component to be tested using up/down buttons, press Set once to activate, press again to turn off.

Remote Test

Provides a means for testing of remote fault relays to confirm they are operating correctly. Relays can be activated one at a time. Scroll between relays with up/down arrow buttons and press Set once to turn on relay, press again to turn it off.

59 | Operation

Caution: Never adjust jumpers other than those listed in this section. Other jumpers are factory set and must not be changed.

50%0%

25%

Blowdown Adjustment Potentiometer

Jumper J10

Jumpers J11 to J18

SEP Humidifier Configuration

The SEP is factory configured to operate under most conditions without the need for any changes to its configuration. If required several settings can be made using jumpers on the

SEP’s control board. The blowdown of the SEP can also be adjusted by using a potentiometer on the SEP’s control board. See Figure 46: SEP Control Board Jumpers for location of jumpers

and the blowdown adjustment potentiometer.

Note: Nortec recommends not making any configuration changes unless they are required and

that any changes to the SEP’s settings be performed by a qualified technician.

Blowdown Adjustment

Figure 46: SEP Control Board Jumpers

Sets the amount of water as a percentage of steam produced that will be drained to control mineral concentration in the tank. The blowdown adjustment potentiometer is located on the side of the control board as shown in Figure 46. It can adjust the blowdown between 0% and 50% of steam produced. (Factory setting = 25% blowdown).

Note: 0% blowdown should never be used even with Deionized water. Minimum recommended setting is 5%.

Operation | 60

Resulting Control

J11

J12

J13

SEP 50/100

0 0 0

SEP 175

1 0 0

SEP 250

0 1 0

SEP 375

1 1 0

SEP 525

0 0 1

SEP 750

1 0 1

SEP 1050

1 1 1

Resulting Control

J14

J15

No Full Tank Blowdown

1 1 96 hours between FTBD

0 0 48 hours between FTBD

1 0 24 hours between FTBD

On/Off or Modulating Control (J10)

The SEP’s output can be controlled by either an On/Off humidistat or a modulating humidistat.

To set the SEP to operate with a modulating humidistat remove Jumper J10. (Factory setting = jumper removed, modulating operation)

J10 Removed– Modulating operation, the controller monitors the demand signal on terminal point 4 of the control terminal strip and adjusts humidifier output to match it.

J10 Installed - The SEP is configured for On/Off operation. The controller will ignore any modulating signals even if they are connected.

SEP Model (J11 to J13)

The SEP model is configured using Jumper 11 to 13. The jumper setting is configured at the factory and should not be adjusted in the field.

Table 8: SEP Model Configuration

Full Tank Blowdown (J14 and J15)

The SEP can be configured to periodically drain the tank to help flush minerals and scale. Jumpers 14 and 15 control blowdown frequency. Hours are accumulated on a weighted basis (1 hour at 50% demand = 0.5 hrs). (Default = J14 and J15 installed, no full tank blowdown)

Table 9: Full Tank Blowdown Jumper Configuration

Modulation Offset (J16)

The SEP controller can be configured to work with a modulating humidistat with 4-20 mA or 210 VDC output. Modulation offset can be configured with jumper 16. (Factory setting = Jumper removed, 0-10 VDC or 0-20 mA control signal)

J16 Removed – Controller is configured for a 0-10 VDC or 0-20 mA control signal.

J16 Installed – Controller is configured for a 2-10 VDC or 4-20 mA control signal.

Note: For mA control a 500 resister is required between terminals 3 and 4 on the low voltage

control terminal.

61 | Operation

Resulting Control

J10

J16

On/Off

No Affect

Modulating 0-10 VDC or 0-20 mA

Modulating 2-10 VDC or 4-20 mA

Table 10: Control Jumper Configuration

Drain Water Cooling (J17)

The SEP can be configured to cool drain water by activating the fill valve whenever the drain pump is activated. To disable drain water cooling remove jumper J17. (Factory setting = jumper installed, drain water cooling active)

J17 Removed – The fill valve is not activated together with the drain pump.

J17 Installed – The fill valve activated together with the drain pump to cool drain water.

Float Check (J18)

Whenever the SEP is first powered it performs a float check to ensure water level detection is working properly. The float check can be deactivated via jumper 18. (Factory setting = jumper removed, float check is performed)

J18 Removed – A float check is performed whenever the SEP is powered on.

J18 Installed – A float check is not performed whenever the SEP is powered on.

Operation | 62

Maintenance and Servicing

64 Required Maintenance

64 Service Warning / Fault

65 Maintenance Schedule

66 Cleaning the Tank

67 Cleaning the Heat Exchanger

68 Cleaning the Float Chamber

68 Resetting Service Reminder

69 Maintenance Shutdown and Extended

Shutdown

70 SETC/P Maintenance Checklist

63 | Maintenance and Servicing

Caution: Power to the humidifier should always be turned off using the dedicated external disconnect before removing the door or side panel, or before doing any service work on the humidifier.

Service LED On

HMW -

Service timer has

expired and humidifier

needs maintenance

Humidifier

Maintenance

Request – 68%

Humidifying 134 lb/hr 04/30/09 14:25:22 Security loop: Closed

Warning HMW - Humidifier Maintenance

Fault LED On

HMF - Humidifier

Maintenance

Service timer + 200 hours

has passed. Maintenance

must be performed.

Humidifier has

shut down.

Request – 68%

Fault 34 lb/hr 04/30/09 14:25:22 Security loop: Closed

Fault HMF - Humidifier Maintenance

+ 200 Hours

Required Maintenance

Service Warning / Fault

The SETC controller includes a timer that monitors the humidifier’s operating hours and generates a warning when service is required. Optimal maintenance time is dependent on water supply conditions and humidifier usage. The default factory service reminder is equivalent to 500 hours of operation at 100% output. Failure to perform maintenance when the service warning is displayed will cause the unit to lock out. Nortec is not responsible for any damages

resulting from, or attributed to not performing required maintenance. (See Manufacturer’s

Warranty).

Warning

When the software determines that the service timer has elapsed it first displays a warning and turns on the yellow service LED. The humidifier will continue to operate for another 200 hours after the warning is displayed.

Figure 47: Service Warning / Fault

Fault

After 200 hours the humidifier will display a fault and shut down.

If maintenance is not possible the humidifier can be temporarily put back into service by turning the humidifier off and on. The humidifier will run for another 200 hours.

This reset can be repeated 4 times after which the humidifier will not run until the Reset Service Reminder function is entered in the software’s service level.

Maintenance and Servicing | 64

Item

30 Days

After

Start-up

When Service Light is

Lit

End of

Season

What to Do

Tank



1. Remove service door and inspect for scale.

2. Remove scale deposits from tank walls using

plastic scraper.

3. Collect scale deposits from tank bottom using wet

vac or scraper and bucket.

Heat Exchanger



1. Remove service door and inspect for scale.

2. Remove scale deposits from tank walls using

plastic scraper.

3. Collect scale deposits from tank bottom using wet

vac or scraper and bucket.

4. Once per season remove heat exchanger, clean,

and inspect.

Gaskets



1. Inspect for cracking or damages.

2. Remove any scale deposits before re-installing.

Float Chamber



1. Remove float chamber, and float chamber lid.

2. Clean any scale deposits from walls and float

magnets.

3. Re-install magnets.

Heater System



1. Inspect for dust and dirt build-up.

2. Blow clean with compressed air.

Fill System



1. Inspect for leaks at float chamber and fill valve.

Drain System



1. Inspect for leaks at drain pump, auxiliary drain, and

internal vacuum break.

Steam Trap



1. Inspect for deposits and float operation.

2. Replace thermal disk if necessary.

3. Clean all ports and inside of trap body.

Wye Strainer



1. Remove service plug and clean out collector screen.

Steam Valve



1. Inspect actuator operation.

2. Perform leakage test to ensure that valve is closing

properly.

Boiler Pressure



1. Inspect Pressure Reducing Valve operation. Pressure must not exceed 15 psig

Note: After performing the first maintenance on the SETC it is possible to increase or decrease the service period to match water conditions. If the tank, heat exchanger, and float chamber are relatively clean and free of scale increase the service period. If there is a lot of scale and it is difficult to remove then reduce the service period and consider increasing the blow down setting. (See SETC Configuration)

Maintenance Schedule

Regular maintenance is required to keep the Nortec SE Series humidifier operating at its peak capacity and efficiency. Follow the maintenance schedule shown in Table 11: SE Humidifier Maintenance Schedule to ensure long humidifier life and peak performance.

Table 11: SE Humidifier Maintenance Schedule

65 | Maintenance and Servicing

Warning

 Disconnect main power at the external disconnect before any servicing.  Tank and piping may be hot, take care when handling.  Avoid using de-scaler chemicals or caustic chemical which can damage the tank or

heat exchanger.

Figure 48: Tank Access For Cleaning

Front Cover

Top Cover

Top Maintenance Door (SE 525 - 1050 Only)

Front Maintenance Door

Gaskets

Tank Door Locknuts. Apply anti seize compound

to remove. Do not crush gasket. Max 5 ft-lbs torque.

Cleaning the Tank

The tank, heat exchanger, and float chamber should be cleaned at least once per season to remove scale and mineral deposits which can reduce unit efficiency. In areas with high mineral content in the water, cleaning should be more frequent.

1 Follow Maintenance Shutdown and Extended Shutdown procedure on page 69. Give the

unit some time to cool down to avoid injury when servicing.

2 Remove the cabinetry covers on the front (all models) and top (SE 525 – 1050 models) by

removing the Phillips type screws and lifting the covers.

3 Remove the tank maintenance doors on the front (all models) and top (SE 525 – 1050

models) by applying anti seize compound to nuts and using 1/2 in. socket. Remove excess anti seize compound.

4 Inspect the tank door gaskets. Remove any scale from the gaskets, the tank door gasket

surface, and tank gasket surface.

5 Using a plastic scraper, such as those used for car windshields, remove scale adhered to

tank walls and visible portions of the heat exchanger. Remove this scale from the unit. A wet vacuum can be used for this purpose.

6 Inspect the heat exchanger. If significant scale build-up has occurred, follow the cleaning

procedure in the next section.

Maintenance and Servicing | 66

Cabinet Cover

Steam Connection Union

F&T Trap

Union

F&T Trap

Union

Heat Exchanger Locknuts Apply anti seize compound

to remove. Do not crush gasket. Max. 5 in-lb torque

Heat Exchanger

Heat Exchanger Gasket

7 Reinstall the tank door gaskets and tank doors. When tightening the tank door nuts, take

care not to over tighten. The tank door nuts should only be torqued to 5 ft-lbs to prevent crushing the gasket underneath.

Cleaning the Heat Exchanger

1 Follow Maintenance Shutdown and Extended Shutdown procedure on page 69. Give the

unit some time to cool down to avoid injury when servicing.

2 Remove the cabinet cover on the right side by removing the Phillips type screws and lifting

the covers.

3 Disconnect the union that transports steam into the heat exchanger and remove the F&T

trap by disconnecting the two unions that hold it in place.

4 Apply anti seize compound to heat exchanger nuts and remove with 1/2 in. socket.

Remove excess anti seize compound.

5 Remove the heat exchanger(s) by pulling on the handle and sliding the heat exchanger out

of the unit.

6 Note: Heat exchangers are heavy, use proper lifting technique when removing them. It is

helpful to have an assistant help remove the heat exchanger.

7 Inspect the heat exchanger gaskets. Remove any scale from the gaskets, the heat

exchanger gasket surface, and tank gasket surface.

8 Using a plastic scraper, such as those used for car windshields, remove scale adhered to the

heat exchanger.

9 Reinstall heat exchanger gaskets and heat exchanger. When tightening nuts, take care not

to over tighten. Only torque nuts to 5 ft-lbs to prevent crushing the gasket underneath.

67 | Maintenance and Servicing

Figure 49: Heat Exchanger Removal

NOTE: If the “Service Reminder” is not reset the humidifier may fault out on the Humidifier Maintenance Fault despite the fact that the maintenance has been performed.

Squeeze tabs

to remove assembly

from humidifier

To tank

To fill valve

Do not reverse float chamber hoses

Caution:

Cleaning the Float Chamber

1 Follow Maintenance Shutdown and Extended Shutdown procedure on page 69. Give the

unit some time to cool down to avoid injury when servicing.

2 Remove the cabinet covers on the front of the unit by removing the Phillips type screws and

lifting the covers.

3 Disconnect the electrical connection to the float board. 4 Remove the hose clamps and the hoses from the top and bottom of the float chamber. 5 Remove the reusable tie-wrap from the float chamber by inserting a small screw driver into

the top of the buckle.

6 Squeeze both sides of the mounting bracket to release the float chamber from the slots on

the support bracket.

7 Use a screw driver to remove the 3 screws from top of the float chamber and remove the lid.

Using a small brush or plastic scraper remove any scale from the inside of the chamber.

8 Re-installation is the reverse of removal.

Figure 50: Float Chamber Cleaning

Resetting Service Reminder

After completing maintenance of the SETC reset the service reminder by following the procedure outlined in Reset Service Reminder on page 50.

Maintenance and Servicing | 68

Note: As long as the SETC is powered, it will automatically drain the tank when there has not been a call for humidity for an extended period of time. This feature will reduce or prevent the possible accumulation of algae and bacteria growing in the tank. The tank will remain empty until there is a call for humidity at which time the fill valve will open and refill the humidifier tank. The unit will go through its normal process for optimum operation.

Maintenance Shutdown and Extended Shutdown

The following procedure should be followed to shut down the humidifier for maintenance or should it be required to disconnect power to the humidifier for a period of extended shut-down.

When performing maintenance, the SETC models include a Tank Pre-Clean feature. Tank PreClean will activate the drain pump to flush out some of minerals in the bottom of the tank, then refill partially with cold water to cool the tank, and finally drain the contents of the tank. This cycle will cool the tank, as well as flush out some deposits.

1 SETC - Activate Tank Pre-Clean as described in Tank Pre Clean on page 50 or press and

release the drain button to simply drain the tank. SEP - Turn the On/Off/Drain switch to Drain.

2 SETC - If preclean was activated wait until the LCD display indicates the preclean is

complete otherwise wait until no water is coming out from the drain. SEP wait until there is no water coming out from the drain.

3 When the tank has completed draining, turn the main power switch to “Off”. Also, shut off

the electrical power at the disconnect.

4 Close the manual shut-off valve on the steam supply. 5 Close the manual shut-off valve on the water supply line. 6 Briefly open the manual valve on the auxiliary drain line (if applicable) to drain any remaining

water.

7 The unit can now be serviced (if maintenance is being performed), or “stored” in this state

until the next humidification season. Alternatively, SETC models can be left in 3 day drain state during an “off-season”.

8 To restart the unit follow Start Up Procedure on page 36.

69 | Maintenance and Servicing

SETC/P Maintenance Checklist

Model #: _________________ Serial #: _________________ Tag: ________

System Check

 HMW (Maintenance Warning )  HMF (Maintenance Fault)   Other warnings or Faults shown in display / LED’s? No  Yes 

(See Troubleshooting Chapter for actions to address warnings and faults if present)

Clean Tank / Heat Exchanger / Float Chamber

 Tank drained.   Disconnect open, On/Off switch to Off   Water shut off and manual steam valve closed, cabinet covers removed.   Anti seize compound applied to tank maintenance door nuts.   Maintenance doors removed (front and top of 525+).   Tank maintenance door gaskets cleaned and in good condition.   Scale removed from tank.   Heat Exchanger has scale and needs cleaning No  Yes 

If Yes

 Steam supply and condensate unions disconnected   Anti seize compound applied and heat exchanger nuts removed   Heat exchanger removed.   Heat exchanger gaskets cleaned and in good condition.   Heat exchanger cleaned with plastic scraper.   Heat exchanger reinstalled.  Nuts torque to 5 ft-lb 

 Steam supply and condensate unions reconnected.   Tank maintenance doors reinstalled  Nuts torque to 5 ft-lb   Float Chamber removed inspected and cleaned 

General Inspection

 Electrical wiring not loose and in good condition,   Steam hoses and steam lines in good condition / No kinks in hose,   No Signs of water leaking around humidifier, steam line, condensate returns,   Cabinet covers replaced, water shut off valve opened, manual steam valve opened, On/Off

switch to On, Disconnect Closed 

 SETC only - “Reset Service Reminder” in Software, (Password 0335, Service Level) 

Inspected by: Date of inspection: _______/_______/______

Company:

Maintenance and Servicing | 70

Troubleshooting

72 Organization of Troubleshooting Chapter

72 Troubleshooting Requirements

73 General Troubleshooting

73 Humidifier

74 Steam Distributors

74 SAM-e

75 Blower Pack

75 Digital Humidistat

76 SETC Warnings and Faults

76 Warnings

76 Faults

76 Clearing a Fault

82 SEP Faults

82 Faults

82 Clearing a Fault

83 SETC Wiring Diagram 84 SEP Wiring Diagram

71 | Troubleshooting

NOTE: Most humidifier faults are not caused by faulty equipment but rather by improper installation. A complete fault diagnosis always involves a thorough examination of the entire system. Often, the steam hose connection has not been properly executed, or the fault lies with the humidity control system.

CAUTION: Be aware, when troubleshooting, that the humidifier is powered by high voltage and pressurized steam. Familiarity with both good practices and wiring of the humidifier is recommended. Any troubleshooting that requires opening the cabinet should be done by qualified personnel.

Organization of Troubleshooting Chapter

The troubleshooting chapter is broken down into 2 sections.

General Troubleshooting Deals with troubleshooting incorrect humidifier operation,

steam line and plumbing issues without any control software warnings or faults.

Humidifier Warnings and Faults Deals with warning and error messages that are generated

by the humidifier’s control software.

Troubleshooting Requirements

 Ensure the installation meets the installation requirements outlined in the Installation

Chapter of this manual.

 Familiarize yourself with the operation of the humidifier by reading the Operation Chapter of

this manual.

 Wiring diagram specific for your humidifier is installed on the inside of the humidifier door. A

generic copy of the SETC and SEP wiring diagram is also included at the end of this chapter for reference purposes.

 When contacting your local representative or Nortec for troubleshooting assistance, please

ensure the serial number has been obtained for reference purposes.

Troubleshooting | 72

Symptom

Cause

Corrective Action(s)

Nothing happens when On/Off switch is turned on.

1 Fuse blown

1 Check inline fuse in yellow housing

between transformer and driver board. Check and replace fuse on driver board.

2 Incorrect or no Voltage

2a Check voltage against spec label and

correct.

2b Check disconnect and insure

humidifier is getting power.

3 Step Down Transformer not

outputting 24VAC

3 Replace the transformer

Humidifier will not humidify or not reaching RH setpoint

1 Safety loop open

1a Check if green led is flashing on the

humidifier’s display.

1b Check if there is 24 VAC at terminal

1c Check wiring and operation of On/Off

devices connected to terminal 1 and

2. Ensure they are closing when they should be.

2 High limit limiting output

2 Check if the high limit is installed too

close to the humidifier and if it is operating correctly.

3 No signal on Channel 1

3 Check voltage between terminal 3

and 4. For demand configuration 15% of full scale signal must be present for humidifier to start. For transducer configuration the signal must be lower than setpoint for the humidifier to start.

4 No signal on Channel 2

(For units configured for dual channel operation).

4 Check voltage between terminal 5

and 3. For demand configuration 15% of full scale signal must be present for humidifier to operate. For transducer configuration the signal must be lower than setpoint for the humidifier to start..

5 Capacity has been manually

limited

5 Check Manual Capacity on status

screens. Adjust “Manual Cap” in the “Control Setting” menu if necessary.

Humidifier has faulted or has a warning

1 Software has detected an

abnormal condition

1 Refer to Table 13troubleshooting

warnings and faults.

General Troubleshooting

The following section provides general guidelines for troubleshooting the SETC/P humidifier and auxiliary components. For detailed troubleshooting information refer to the manuals that were provided with the auxiliary equipment, to Table 13: Troubleshooting Warnings and Faults, and to Table 14: Troubleshooting SEP Faults later in this chapter.

Humidifier

Table 12: General Troubleshooting

73 | Troubleshooting

Symptom

Cause

Corrective Action(s)

Distributor spitting out water

1 Distributor not level

1 Use support at end o distributor to

ensure it is level.

2 “P” Trap too close to distributor

2 “P” Trap must be a minimum of 12 in

(30 cm) below the distributor to ensure flow. Relocate if required.

3 Condensate line not sloped

sufficiently

3 Sufficient slope to insure flow is

required. Reinstall if required.

4 Trap blocked

4 Check that water flows through trap.

Clear out if blocked.

5 Condensate line double trapped

5 Condensate lines must not have two

traps in sequence. This can cause an air lock and prevent water draining.

6 Steam line not insulated

6 If steam line is long condensate build

up could overload distributor condensate port. Insulate line to improve efficiency and install additional condensate traps as required.

Condensation in duct

1 Installation clearances not

observed

1 Refer to distributor installation

manual for required clearances. Relocate distributor if required.

2 Design conditions changed

2 Check supply air temperature and

humidity to determine if conditions have changed.

3 High limit not functioning

3 Check setting and operation of high

limit. Replace if defective.

4 Air proving not installed or not

working

4 Check that the humidifier will only

operate when there is air moving in the duct.

5 Improper location of high limit

5 Check that high limit is installed

where it can detect high duct humidity.

Symptom

Cause

Corrective Action(s)

SAM-e spitting out water

1 “P” Trap too close to SAM-e

1 “P” trap must be at least 12 in (30

cm) below header. Relocate if required.

2 Condensate line not sloped

sufficiently

2 Ensure line is sloped sufficiently to

carry condensate produced.

3 Steam line not insulated

3 If steam line is long condensate build

up could overload the SAM-e condensate port. Insulate the steam line to improve efficiency and install condensate traps as required.

Steam Distributors

SAM-e

Troubleshooting | 74

Symptom

Cause

Corrective Action(s)

SAM-e Grommet leaks

1 Distributor tubes not seated

properly

1 Push distributor tubes down until

support washer is resting on rubber grommet.

2 Grommet Damaged

2 Replace any damaged grommets

Symptom

Cause

Corrective Action(s)

Blower not operating

Note: Blower pack does not come on unless the humidifier is producing steam.

1 No power to blower pack

1a Check power connection.

1b Check blower pack fuses

2 On/Off Thermostat not closing

2 Check wiring to thermostat replace if

it does not close when it is exposed to steam.

Symptom

Cause

Corrective Action(s)

Humidistat Reading incorrectly

1 Sensor out of calibration

1 Check reading against known

reliable instrument. If out of calibration it can be field calibrated ±10%. Press buttons together until calH appears on the display. Press to display the current calibration trim. Adjust using  buttons. Press  button when done.

2 Improper sensor location

2 Check that the humidistat is

positioned in a location representative of room humidity.

3 Exposed to draft or heat source

3 Check that heat/cold fluctuations,

drafts, sunlight, doors, or vents are affecting the reading.

4 No vapour barrier

4 Insure drafts cannot affect reading

by ensuing vapour barrier is in place and working.

Blower Pack

Digital Humidistat

75 | Troubleshooting

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

CLF

Clock Fault

Red

Controller system clock

failure.

1 Software has detected

a hardware problem with main control board

1 Restart humidifier, if

error occurs within 1 minute replace main control board. If error does not occur then primary power fluctuation may be the cause.

DCF

Drain Ck Fault

Red

The drain pump is activated but water level has not decreased

1 Drain blocked

1 Check water flow at air

gap when drain activated. Flow should be > 5 gal (20 l) / min.

2 Pump not working

2a Check wiring to pump.

2b Activate pump with

diagnostic output test and verify pump runs and drains water.

SETC Warnings and Faults

The self-diagnostic system built into the SETC is continually monitoring the operation of the humidifier.

Warnings

 When problem symptoms are detected, the SETC will attempt to take self-corrective actions

to try to correct the problem. A warning is displayed on the screen for information purposes and the humidifier continues to operate.

 If the condition which generated the warning is eliminated the warning is cleared from the

display.

Faults

 If the humidifier is not able to self correct a problem symptom it will if necessary respond by

shutting itself down.

 When this occurs the humidifier illuminates the red “Fault” LED, shuts off the signal to the

CV valve actuator, and activates the “Error” relay of the remote relay board.

Clearing a Fault

 Check the fault message that the humidifier is displaying and take any necessary actions to

correct the cause(s) as outlined in Table 13, Troubleshooting Warnings and Faults.

 Power cycle the humidifier with the On/Off switch waiting 3 seconds between turning it off

and on.

Table 13: Troubleshooting Warnings and Faults

Troubleshooting | 76

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

DCF

(Cont)

3 Floats stuck

3a Watch float board lights

while manual drain is activated. Verify lights activate in sequence

3b Remove float chamber

and check for scale

FCF

Fill Check Fault

Red

The fill valve has been active for an extended time without increasing a float level.

1 Water supply off or

inadequate

1a Ensure water line is

open and that adequate water supply and pressure is available.

2 Fill valve strainer

blocked

2a Disconnect water

supply line and remove strainer. Clear if obstructed.

3 Fill Valve not activating

3a Check wiring to fill

valve.

3b Activate fill valve with

diagnostic output test. Verify water is flowing when activated.

4 Float board not

detecting water

4a Check wiring to float

board.

5 Manual drain switch on

or auxiliary drain open.

5a Check that manual

drain switch is not on.

5b Check that auxiliary

drain valve is closed.

FIF

Float Inconsist.

Red

On startup, the unit registers that the float levels do not increase logically from 1 to 5

1 High water flow from

fill valve to float chamber cooling.

1 Check flow from fill

valve hose connected to float chamber. Is only a trickle. If not check hose is connected to correct side of fill valve or if orifice is missing in fill valve.

2. Float chamber or board not in place

2 Check that float board

is properly installed in plastic support , that tie wrap is in place, and that float reservoir is in place.

3 Float level sensor is

malfunctioning.

3 Squeeze bottom hose

from float chamber and activate fill valve using diagnostic output test. Watch for proper light sequence. Replace assembly if sequence is incorrect.

77 | Troubleshooting

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

FLF

Float Level

Red

More than one Float Level is registering at the same time

1. Float chamber or board not in place

1 Check that float board

is properly installed in plastic support , that tie wrap is in place, and that float reservoir is in place.

FLF

(Cont)

2 Float level sensor is

malfunctioning.

2 Squeeze bottom hose

from float chamber and activate fill valve using diagnostic output test. Watch for proper light sequence. Replace assembly if sequence is incorrect.

FTF

Fill Fault /

Warning

Red

The fill valve has been active for an extended time without reaching level 1.

1 Water supply off or

inadequate

1a Ensure water line is

open and that adequate water supply and pressure is available.

2 Fill valve strainer

blocked

2a Disconnect water

supply line and remove strainer. Clear if obstructed.

FTW

3 Fill Valve not activating

3a Check wiring to fill

valve.

3b Activate fill valve with

diagnostic output test. Verify water is flowing when activated.

4 Float board not

detecting water

4a Check wiring to float

board.

5 Manual drain switch on

or auxiliary drain open.

5a Check that manual

drain switch is not on.

5b Check that auxiliary

drain valve is closed.

HMF

Maint. Fault /

Warning

Red

The Humidifier Maintenance interval and 72 hour window for cleaning has expired

1 Humidifier requires

maintenance

1 Perform humidifier

maintenance as described Maintenance Schedule on page 65

HMW

Yel

The preset service interval time has expired.

2 Service reminder not

reset after maintenance

2 Reset service reminder

as described in Reset Service Reminder on page 50

KWF

Keep Warm

Fault

Red

Keep Warm activated but tank temperature has not increased within time allotted

1 Tank temperature

sensor not detecting warm tank.

1a Check tank to see if hot

(caution).

1b Check wiring to tank

temperature sensor.

1c Check if sensor closed

when tank is hot.

Troubleshooting | 78

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

KWF

(Cont)

2 No steam supply to

humidifier.

2a Check that isolation

valve is not closed.

2b Check if boiler steam is

available.

2c Check if CV valve opens

using diagnostic output test.

3 Condensate not

draining from heat exchanger.

3a Check that F&T trap is

allowing condensate to drain.

LKF

Leak Fault /

Warning

Red

Float level has dropped multiple times while no steam is being produced.

1 Steam leaking through

CV valve

1a CV valve actuator not

adjusted. Follow Figure 11: CV Valve Actuator Installation on page 16.

1a CV valve defective.

Replace CV valve.

LKW

2. Auxiliary drain is leaking.

2a Check that auxiliary

drain valve is closed and is not leaking.

3. Tank or fittings are leaking.

3a Check for leaks from

tank, tank covers, and fittings.

LMI

Limit Instable

Limit signal Is not stable.

1 High limit humidistat

too close to steam distributor

1 Locate the high limit

humidistat a minimum of 10 feet (3 m) from the distributor.

2 High limit humidistat

setpoint too low

2 Adjust the high limit

setpoint to 85% or more.

3 Improper Proportional

and Integral settings in control

3 Adjust proportional and

integral settings to reduce swings in demand signal.

4 Defective control

4 Replace defective

control

MEM

Flash R/W Fault

Red

Controller Memory failure

1 Software has detected

a hardware problem with main control board

1 Restart humidifier, if

error occurs within 1 minute replace main control board. If error does not occur then primary power fluctuation may be the cause.

MTW

ModBus Timeout

No Modbus signal

1 Loose connection

1 Check connections and

polarity of wires.

2 Incorrect Modbus

address

2 Check that Modbus

address of humidifier matches that of master.

79 | Troubleshooting

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

MTW

(Cont)

3 Humidifier configured

for Modbus but not connected to network

3 Configure controls

correctly in “Control Setting” level of

software (see Operation Chapter).

4 Improper wire used

4 Use 120 Ohm

impedance shielded twisted pair cable.

5 Noise preventing

humidifier from detecting signal.

5 Eliminate source of

noise causing interference.

NSW

No Signal

Warning

No communication is detected from Master unit. (This unit is set up as slave)

1 Improper wiring

1 Check wiring

connections, polarity, and type of wire used. (See Staged Modulation Wiring (SETC Only) on page 31)

RDW

Remote

Disabled

The unit has been remotely disabled through modbus communication or Nortec Online.

1 Network signal

received by humidifier to shut down.

1 Normal operation for

humidifier on network control Contact network administrator to enable humidifier.

RHW

Rh High

Warning

The measured RH is above the RH High alarm setting.

1 Setpoint higher than

RH alarm setting

1 If the humidifier is still

operating then check and adjust setpoints.

RLW

Rh Low

Warning

The measured RH is below the RH Low alarm setting.

1 Humidifier not running

1 Check why humidifier is

not running and put it into operation.

2 Setpoint lower than RH

low alarm setting

2 Check and adjust

setpoints.

RMW

Rh Limit

Warning

Operation is interrupted until an input higher than 3% is received.

1 Sensor not powered

1 Use multimeter to

check that sensor is powered.

2 Sensor not wired

correctly

2 Check wiring is secure

and wired correctly per instructions in installation chapter.

3 Defective sensor

3 Check if sensor is

outputting corresponding to RH. If not replace the sensor.

4 RH less than 5%

4 RH less than 5% are

interpreted as a broken sensor. Contact Nortec Representative for recommendation.

Troubleshooting | 80

Code

Display

Message

LED

System Detected

Cause

Corrective Action(s)

5 Humidifier control

configuration incorrect

5 Check that the

humidifier control configuration matches the installed sensor output.

TCF

Tank Cold Fault

Red

The tank has not become hot with the steam valve activated.

1 Tank temperature

sensor not detecting warm tank.

1b Check tank to see if hot

(caution).

1a Check wiring to tank

temperature sensor.

1c Check if sensor closed

when tank is hot.

TCW

2 No steam supply to

humidifier.

2a Check that isolation

valve is not closed.

2b Check if boiler steam is

available.

2c Check if CV valve opens

using diagnostic output test.

3 Condensate not

draining from heat exchanger.

3a Check that F&T trap is

allowing condensate to drain.

81 | Troubleshooting

Number of

Flashes / Fault

System Detected

Cause

Corrective Action(s)

One Flash

Humidifier Drain Fault

Water level is not dropping when pump is activated.

1 Internal drain

blocked

Check if water drains from unit when drain manually activated. If not then;

1a Check restrictor in drain line immediately after

pump for blockage.

1b Check pump rotor to see if it is blocked.

1c Check if scale has built up in sump at bottom of

tank and caused a blockage.

2 External drain

blocked

2 Check that water can flow freely through drain

lines.

Two Flashes

Humidifier Fill Fault

Water level not rising or not detected.

1 Water shut off

valve closed

1 Open shut off valve

2 Auxiliary drain

leaking

2a Close auxiliary drain valve if unit does not have

freeze protection.

2b Check freeze protection valve is closed if freeze

protection installed.

3 Fill valve

strainer blocked

3 Clean out strainer on fill valve inlet.

Four Flashes

Inconsistent Float Level

Floats have indicated water level not changing in sequence.

1 High cooling

flow into float chamber

1a Check that orifice in fill valve is in place. Flow

should be very low.

1b Check if tank fill and float cooling lines are

reversed. Flow to float chamber should be very low. Tank hoses to centre of float chamber.

2 Defective float

board.

2 Observe LED’s on float chamber as tank fills. If

LED’s do not light in sequence replace float

chamber and float board.

SEP Faults

The self-diagnostic system built into the SEP can display some fault conditions by flashing the yellow “Service” LED in sequence. The SEP does not display any warnings.

Faults

 If the humidifier is not able to self correct a problem symptom it will if necessary respond by

shutting itself down.

 When this occurs the humidifier illuminates the red “Fault” LED, Flashes the yellow LED in a

numerical sequence, shuts off the signal to the CV valve actuator, and activates the “Error” relay of the remote relay board.

Clearing a Fault

 Count the number of flashes of the yellow LED and take any necessary actions to correct the

cause(s) as outlined in Table 14: Troubleshooting SEP Faults.

 Power cycle the humidifier with the On/Off switch waiting 3 seconds between turning it off

and on.

Table 14: Troubleshooting SEP Faults

Troubleshooting | 82

SETC Wiring Diagram

Insert Wiring Diagram for SETC by exporting to PDF

directly from Corel Draw and

then combining with this

Figure 51: SETC Wiring Diagram

PDF

83 | Troubleshooting

SEP Wiring Diagram

Insert Wiring Diagram SEP

by exporting to PDF directly

from Corel Draw and then

combining with this PDF

Figure 52: SEP Wiring Diagram

Troubleshooting | 84

Spare Parts

85 | Spare Parts

Distributor Spare Parts

Figure 53: Distributor Exploded View and Spare Parts

Spare Parts| 86

SETC/P 100 – 1050 Plumbing Parts

Figure 54: SETC 100-1050 Plumbing Parts

87 | Spare Parts

Item

Description

Part No.

100

175

250

375

525

750

1050

Cover Plate Assy.

2544439

1 1 1 1 1 1 1 2 O-ring, Clean Out Port

2524361

1 1 1 1 1 1 1 3 O-ring, Clean Out Port,

2524361

1 1 2 4 Cover Plate, Clean Out Port

2547539

1 1 2 5 Fill Box Assy.

2526152

1 1 1 1 1 1 1 6 Lower Mixing Box

1506749

1 1 1 1 1 1 1 7 Drain Pump 24v 60 Hz

1502644

1 1 1 1 1 1 1

Vacuum Break Valve 1/2" NPT

1505959

1 1 1 1 1 1 1

P-Trap

2526521

1 1 1 1 1 1 1

Dual Fill Valve 10.0 l/min &

0.35 l/min

1505759

1 1 1 1 1

Dual Fill Valve, 17.0L/Min & 0.35L/Min

1508581

1 1

Auxiliary Drain Termination

1506925

1 1 1 1 1 1 1

Steam Trap, 15psi

1508849

1 1 1 1 2 2 3

Float Board

2511137

1 1 1 1 1 1 1

Float Chamber Mounting Bracket

1113777

1 1 1 1 1 1 1

Float Chamber

1115933

1 1 1 1 1 1 1

O-ring, Heat Exchanger, Large

2524403

1 1 2 2 3

O-ring, Heat Exchanger, Mini

2524405

1 1

Heat Exchanger Kit, Single

2530902

1 1 2 2 3

Heat Exchanger Kit, Mini

2530901

1 1

Modulating Actuator 0-10 VDC

1507549

1 1 1 1 1 1

Modulating Actuator 0-10 VDC, 2.5 Val

1508472

Valve 3/4 in. CV 5.5

1594322

Valve 1 in. CV 10.0

1594324

Valve 1 in. CV 12.0

1594332

Valve 1.25 in. CV 20.0

1594341

Valve 1.5 in. CV 28.0

1594350

Valve 2.0 in. CV 40.0

1594360

Valve 2.5 in. CV 65.0

1508473

Table 9: SETC/P 100-1050 Plumbing Parts List

Spare Parts| 88

SETC/P 100 – 1050 Cabinet and Electrical Parts

89 | Spare Parts

Figure 55: SETC/P 100-1050 Cabinet and Electrical Parts

Item

Description

Part No.

100

175

250

375

525

750

1050

Service Door, Mini

2523709

1 1

Service Door, Single

2524402

1 1

Service Door, Double

2524401

1 1

Service Door, Triple

2523704

1 2 Recessed Handle,

2523444

1 1 1 1 2 2 2 3 Kit Processor Board SE

2553861

Not

Shown

Cable , 40 Pin Ribbon

2537230

Panel Processor Display,

2544253

Not

Shown

Membrane, Nortec

1509735

Switch Rocker DPST 10A-250V

2522489

Remote Fault Indication Board SETC

2550184

Not

Shown

Cable, 10pin Ribbon

2522062

PCB Driver Board

2535504

Transformer,120/240V, 24V,150VA

2532672

Door, Front, GS-SE

2523597

Panel, Electrical Cabinet

Reference - Contact Factory

Panel, Elec. Bottom

Reference - Contact Factory

Panel, Rear Elec.

Reference - Contact Factory

Panel, Tank Rear

Reference - Contact Factory

Panel, Elec. Top

Reference - Contact Factory

Panel, Top Tank

Reference - Contact Factory

Panel, Left,

Reference - Contact Factory

Base Assembly

Reference - Contact Factory

Table 10: SETC B+/P 100 – 1050 Cabinet and Electrical Parts List

Spare Parts| 90

SETC/P 50 Plumbing Parts

91 | Spare Parts

Figure 56: SETC/P 50 Plubming Parts

Item

Description

Part No.

Qty

Tank Replacement Kit, SE50

2520458

Heat Exchanger Replacement Kits, SE50

2520460

Gasket, Tank/H.E. Assembly, SE50

1510179

F&T Trap Assembly, with Plumbing, SE50

1500181

Float Chamber Assembly, with Board and Connections, SE50

2520239

Float Board

2511137

Bracket, Float Chamber Mount, SE50

2520240

5 Cover Plate Kit, Clean Out Port, SE50

2520461

Gasket, Clean Out Port, SE50

1510180

P Trap Mount Assembly, SE50

2520137

Dual Fill Valve, 5.5L -.35 L/Min

1704234

Fill Box Assembly with Connections, SE50

2520235

Vacuum Break Valve 1/2" NPT

1505959

Termination Assembly with Connections, SE50

2520236

P Trap Assembly, Complete, SE50

1510187

Pump Drain, 24VDC, 60HZ (DPS 25-119)

1502644

Auxiliary Drain Termination

1506925

Modulating Actuator 0-10 Vdc

1507549

Valve 1/2in CV 2.80 / VB7263

1594316

Table 11: SETC B+/P 50 Plumbing Parts

Spare Parts| 92

SETC Electrical SEP Electrical

SETC/P 50 Electrical and Cabinet Parts

93 | Spare Parts

Figure 57: SETC/P 50 Electrical and Cabinet Parts

Item

Description

Part No.

Qty

Panel Assembly, Electrical Front, Cabinet SE50

2520268

Kit Processor Board SE

2553861

Not

Shown

Cable, 40 Pin Ribbon

2537230

Panel Assm, Display, Cabinet, SE 50 B+

2552793

PCB Driver Board

2535504

Remote Fault Indication Board SETC

2550184

Not

Shown

Cable, 10 pin Ribbon

2522062

Switch Rocker DPST 10A-250V

2522489

Bracket Assm, Keypad Mnt, SE50

2520272

Enclosure, Transformer, Cabinet, SE50

2549857

Transformer,120/240Vpri,24Vsec,150VA

2532672

Terminal Block 2 Pole

1473002

Ground Clamp

1323020

Switch DPDT ON/OFF/DRAIN SETC/SEP

2538961

SEP Display / Keypad Assembly, SE50

2520279

SEP, Led Board Assembly

1508619

SEP Control Board

1508577

Panel Access, Elect Right, Cabinet, SE50

2520283

SETC

Panel,Access,Electrical Front SE 50 B+

2552792

SEP

Panel Access, Elect Front, Cabinet, SE50

2520270

Panel, Access, Tank Front, Cabinet, SE50

2520267

Table 12: SETC B+/P 50 Electrical and Cabinet Parts

Spare Parts| 94

95 | Warranty

Warranty

Walter Meier Inc. and/or Walter Meier Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years after installation or 30 months from

manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s manufactured and

assembled products, not otherwise expressly warranted are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations.

THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing

replacement parts to the customer, F.O.B. THE COMPANY’s factory, providing the defective

part(s) is returned freight prepaid by the customer. 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.

The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product. Any further warranty must be in writing, signed by an officer of THE COMPANY.

THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier.

THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment.

THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting from freezing of the humidifier, supply lines, drain lines, or steam distribution systems.

THE COMPANY makes no warranty and assumes no liability whatsoever for equipment that has failed due to ambient conditions when installed in locations having climates below 14°F (10°C) during January or above 104°F (40°C) during July.

THE COMPANY retains the right to change the design, specification and performance criteria of its products without notice or obligation.

Warranty | 96

Certificate No. 002419

U.S.A. Walter Meier (Climate USA) Inc.

826 Proctor Avenue Ogdensburg, NY 13669

CANADA Walter Meier (Climate Canada) Ltd.

2740 Fenton Road Ottawa, Ontario K1T 3T7

TEL: 1.866.NORTEC1 FAX: 613.822.7964

EMAIL: nortec@waltermeier.com WEBSITE: www.humidity.com

www.norteconline.com

Nortec SE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual