Nortec NH Series Operating instructions

NH

Series

Installation and

Operation Manual

Includes installation, operation

maintenance and troubleshooting

information for your NHRS Resistive

Element Steam Humidifier

2530618-

* | 08 SEP 2010

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

Thank you for choosing NORTEC.

Proprietary Notice

This document and the information disclosed herein are proprietary data of WALTER MEIER LTD. Neither this

document nor the information contained herein shall be reproduced used, or disclosed to others without the

written authorization of WALTER MEIER 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 WALTER MEIER 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.

Copyright Notice

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

TABLE OF CONTENTS

10-00 INTRODUCTION

1. PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2. PACKAGING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3. PRE-INSTALLATION EQUIPMENT VERIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

10-10 INSTALLATION PROCEDURES

1. HUMIDIFIER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. STEAM DISTRIBUTOR INSTALLATION FOR THE ASD, BSD, CSD . . . . . . . . . . . . . . . . . . . . .27

3. SAM-E SHORT ABSORPTION MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

4. BLOWER PACKS (BOBP, RMBP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

10-20 OPERATION

1. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2. NHRS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

10-30 MAINTENANCE PROCEDURES

1. NHRS MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

10-40 TROUBLESHOOTING

1. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

2. START-UP CHECK LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

3. MAINTENANCE CHECK LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

10-50 TECHNICAL

1. EXPLODED VIEWS - PLUMBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

2. EXPLODED VIEWS ELECTRICAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

WARRANTY



Introduction

CAUTION: Servicing

Disconnect main power before any servicing.

The plumbing and electrical compartments contain 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 cylinder, 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

Plumbing to be performed by a licensed plumber.

Drain water from humidifier can be very hot. Do not drain to public sink.

All plumbing 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

Do not mount on floor

The NHTC produces steam at atmospheric pressure no devices which could block

steam output should be connected to the steam outlet.

Steam 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.

Page 1

10-00

INTRODUCTION

Page 2

Figure 1. NHRS

Page 3

1. PRE-INSTALLATION

A. RECEIVING & UNPACKING EQUIPMENT

(1) Check packing slip to ensure ALL material has been delivered. All material

shortages are to be reported to NORTEC within 48 hours from the receipt of

good. NORTEC assumes no responsibility for any material shortages beyond this

period.

(2) Inspect shipping boxes for damage and note damages on shipping waybill

accordingly. After unpacking, inspect equipment for damage. If damage is found

notify shipper promptly. All NORTEC products are shipped on a FOB factory

basis. Any and all damage, breakage or loss claims are to be made directly to

the shipping company.

2. PACKAGING

A. GENERAL

(1) The equipment packaging is standardized in that each box will contain the same

base content. The following paragraphs identify the content of each box.

B. HUMIDIFIER AND CONTROL BOX

(1) The typical equipment found in the humidifier and control box are shown in

Figure 2. The contents are listed on the box. If controls and any other small

accessories are placed in the box they will be listed on the box.

C. DISTRIBUTOR BOX

(1) Depending on the equipment ordered the following distributor box configurations

may be received.

(2) For equipment received if an ASD, BSD, CSD distributors are ordered refer to

Figure 3.

(3) For equipment received if a SAM-e is ordered refer to Figure 4.

(4) For equipment received if a RMBP is ordered refer to Figure 5.

Page 4

H096

BOX WITH

ABBREVIATED

INSTRUCTIONS

AND BOX

CONTENT

STICKERS

CONTROLS

(IF ORDERED

ONLY)

BAG WITH

MANUAL,

CLAMPS,

HOSE SECTION

HUMIDIFIER

STEAM HOSE

SECTION (NOT

SUPPLIED IF BUILT

ON BLOWER PACK

ORDERED)

Figure 2. Humidifier Box

Figure 3. Distributor Box

Figure 4. SAM-e Distributor Box

Figure 5. Remote Mounted Blower Pack Box

Page 5

3. PRE-INSTALLATION EQUIPMENT VERIFICATION

A. GENERAL

(1) Ensure the available voltage and phase correspond with humidifier voltage and

phase as indicated on the humidifier’s specification label.

(2) Ensure that the external fuse disconnect is sufficient size to handle the rated

amperage as indicated on the humidifier’s specifications label. Refer to local building

codes.

(3) Report any discrepancy immediately to the site engineer.

(4) Location and mounting is described in Chapter 10-10.

(5) For typical installation see Figures 6 & 7.

Page 6

Figure 6. Typical NHRS Installation (Sheet 1 of 2)

Page 7

Figure 7. Typical NHRS Installation (Sheet 2 of 2)

Page 8

THIS PAGE INTENTIONALLY LEFT BLANK

Page 9

10-10

INSTALLATION

PROCEDURES

Page 10

1. HUMIDIFIER INSTALLATION

A. LOCATION

(1) The NORTEC NHRS series humidifier is designed to mount on a suitable wall or

vertical surface. Do not sit the unit on the floor due to clearances required for

plumbing and electrical connections. The clearance dimensions shown in this

manual are for reference only and are the minimum required for maintenance on

the humidifier. Local and national codes should be consulted before final location

and installation of the humidifier. NORTEC cannot accept responsibility for

installation code violations.

(2) The location of the humidifier should be below the steam distributor. 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.

(3) When possible, mount the NHRS humidifier at a height convenient for servicing.

B. MOUNTING

(1) The NHRS series humidifier is wall mounted using keyholes located on the back

of the unit‟s cabinetry. The keyholes are spaced 16 inches apart center to center

as per UL certification standard stud spacing dictates.

(2) Use #12 x 3 in. screws. 2 screws are needed for a single unit (NHRS 010 to 090

lbs/hour). 3 screws are needed for a double unit (NHRS 135 to 180 lbs/hour).

Insert the screw 16 in. apart. Be sure the screws are level to each other. Proceed

to insert the screws into the studs until there is 1/4 in. of screw exposed. Ensure

the screws are properly anchored to the wall.

(3) Raise the unit. Align the keyholes on the back of the unit with the screws. Place

the screws through the keyholes. Make sure the unit is level then tighten the

screws to secure the unit in place.

(4) Once the unit is securely fixed to the wall, install the “L” shaped brackets into the

same studs the unit is attached to. Place the brackets on top of the unit, inline

with the studs. Using the appropriate sized wood screw fasten the “L” brackets

to the studs securing the unit from any upward motion.

Page 11

C. WATER SUPPLY LINE (Potable Water Supply)

(1) All water supply and drain line connections should be installed in accordance

with local building codes.

(2) It is always recommended to install a manual shut off valve on the fill water

supply line dedicated to the humidifier to facilitate servicing. Use 1/2 in. outside

diameter copper piping to the humidifier. See Figure 1 for further detail.

D. WATER SUPPLY LINE (De-ionized Water Supply)

(1) All water supply and drain line connections should be installed in accordance

with local building codes.

(2) It is always recommended to install a manual shut off valve on the fill water

supply line dedicated to the humidifier to facilitate servicing. Use 1/2 in. plastic or

stainless steel tubing to connect to the humidifier. See Figure 1 for further detail.

Page 12

Figure 1. Plumbing Connections

Page 13

E. WATER DRAIN LINE

(1) All water supply and drain line connections should be installed in accordance

with local building codes.

(2) The NHRS comes equipped with a 1-1/2 in. drain outlet on the under side of the

drain canal. Attach the factory supplied 1-1/2 in. hose to the drain outlet.

(3) A 1 in. air gap is needed in the drain line to prevent any backflow or siphoning

from occurring. It is recommended to place this air gap as close to the unit as

possible to limit any chance of siphoning. A copper funnel should be used

reducing the drain line to a minimum of 2 in. O.D. pipe. If DI or RO water is used,

stainless steel is recommended for the drain line and funnel. Purified water will

deteriorate copper over time and use. See Figure 1 for further detail.

(4) The drain line should not end in a sink used frequently by personnel, or where

plumbing codes prohibit it, route to a floor drain or equivalent for safety reasons.

Page 14

F. SCALE MANAGEMENT SYSTEM INSTALLATION

Figure 2. Installation of the Scale Tank Bracket

(1) Line up holes in bracket with holes in drain pan. Fasten the bracket to the

drain pan using the four #10-32 nylon lock nuts.

(2) Fasten the front of the bracket with the two #10-24 self tapping screws

provided.

(3) The two locking screws for the bracket should already be installed.

Page 15

Figure 3. Installation of the Scale Tank

(1) Unlock support bracket by removing locking screws.

(2) Open both mechanisms by rotating counter clockwise until opening is

visible.

(3) Place scale tank on support bracket.

(4) Rotate bracket to close mechanism and raise scale tank. Note ensure

scale tank lines up with opening at the bottom of the drain pan when

raising.

(5) Lock mechanism by re-inserting the two locking screws.

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Nortec NH Series Operating instructions

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