Nor-tec RH2 User manual

RH2+

Installation and

Operation Manual

Includes installation, operation

maintenance and troubleshooting

information for your RH2+ Electric

Steam humidifier

2568051-F| 28 OCT 2014

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

Thank you for choosing Nortec.

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.

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.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Contents

1 Introduction

2 Receiving and Unpacking

3 RH2 Models

4 Options and Accessories

5 Installation

6 Typical RH2 Installation

7 Location

8 Mounting with Keyholes

9 Plumbing

10 Steam Distributor

12 Steam Lines and Condensate

Return Instructions

16 Electrical

17 External Controls

22 Options and Accessories

23 Start Up

24 Installation Check

25 On/Off or Modulating Operation

26 Start Up Procedure

27 Nortec Digital Controls

28 RH2 Pre-Start Up Checklist

31 Operation

32 LED Status Lights

32 Selecting a Relative Humidity

Setpoint

33 Humidifier Components

34 Description of Components

35 Humidifier Schematic

36 How the Humidifier Works

38 Humidifier Configuration

40 Maintenance and

Servicing

41 Required Maintenance

45 Extended Shutdown

46 RH2 Maintenance Checklist

47 Troubleshooting

49 General Troubleshooting

51 RH2 Faults

53 RH2 Wiring Diagrams

54 Spare Parts

58 Warranty

1 | Introduction

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 blower pack, steam lines, steam distributors,

and condensate lines can become hot and can burn if touched.

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.

CAUTION: Electrical

All electrical work should be done according to local and national 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 RH2 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.

Introduction | 2

Receiving and Unpacking

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

2All 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.

3Inspect shipping boxes for damage and note damages on shipping waybill accordingly.

4After unpacking, inspect equipment for damage and if damage is found, notify the shipper

promptly.

5All Nortec products are shipped on a Free-On-Board (FOB) factory basis. Any and all damage,

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

Before Installation

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

indicated on humidifier’s specification label.

2Ensure that the dedicated external fuse disconnect is of sufficient size to handle the rated

amps as indicated on the specification label. Refer to local codes.

3Report any discrepancy immediately to the site engineer, if applicable.

4Ensure sufficient clearances will be available as described in the Location section on pg 7.

5Ensure steam lines can be routed to duct distributor or blower pack as described in Steam

Lines and Condensate Return Instructions on page 12.

Figure 1: Specification Label Location

MADEINCANADA

MODEL:

VOLTS 1:

F.L.A:

KW:

XXXXXXXXXXXXXXXXXXXXXXXX S/N:XXXXXXX

XXXXXXXXX

PHASE: XXXX HZ:

XXXXX

XXXXXX

DATE: XXXXXXXXX

VOLTS 3:XXXXXXXXX

VOLTS 2:XXXXXXXXX F.L.A:XXXXX

F.L.A:XXXXX

XXXXXX

KW:

3 | Introduction

RH2 Models

The RH2 is the most advanced residential steam humidifier available and provides steady and

reliable humidification for a home using the same proven cylinder technology as Nortec’s

industrial electrode platform. The RH2 is available in 2 models: Duct, and Space. The duct

model is designed for connection to a steam distributor installed in a supply air duct, or for

connection to a remote blower pack. The space model is designed for applications where

humidity is to be introduced directly into the conditioned environment. The two models can be

differentiated by the grille in the humidifiers front cover, see Figure 2: RH2 Models.

Figure 2: RH2 Models

Table 1: RH2 Specifications

Model - Part No.

Volts

Capacity

lb (kg)

Amps

Phase

Max Ext

Fuse

Standard

Cylinder

Net/Full

Weight

lb (kg)

RH2 Space - 2560952

110-120

4 (1.8)

1.5

202

16 / 22

(7.5 / 10.0)

208

6.9 (3.1)

2.6

12.7

220-240

8 (3.6)

3.0

RH2 Duct - 2560953

110-120

5 (2.3)

1.9

202

15 / 21

(7.0 / 9.5)

208

8.7 (4.0)

3.3

15.9

220-240

10 (4.6)

3.8

Introduction | 4

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 RH2

humidifier. Refer to the installation instructions that came with the accessories for proper

installation and operation.

Table 2: Options and Accessories

Option / Accessory

Application

Steam Distributors

Introducing steam into ventilation ducts.

Remote Blower Pack

Introducing steam into conditioned environments.

Digital or Modulating Control Humidistats

Controlling the output of the humidifier based on sensed RH.

Digital or Modulating High Limit

Humidistats

Preventing over-humidification in a duct by shutting down or

throttling down the humidifier when RH approaches saturation.

Air Proving Switches

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

5 | Installation

Installation

6 Typical RH2 Installation

7 Location

8 Mounting with Keyholes

9 Plumbing

10 Steam Distributor

12 Steam and Condensate Returns

16 Electrical

17 External Controls

17 Control Wiring

17 Duct Humidification Control Location

18 Space Humidification Control Location

19 On/Off Control Wiring

20 Modulating Control Wiring

21 Fan Enable Wiring

21 RH2 Fan Control

21 Nortec On/Off Humidistat Fan Control

22 Options and Accessories

22 Remote Blower Pack

Installation | 6

Typical RH2 Installation

Figure 3: Typical Humidifier Installation

7 | Installation

Location

Mount on a suitable wall or vertical surface. Do not sit the unit on the floor. Allow clearances

required for plumbing and electrical connections. 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.

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

5 - 95%.

When possible install below 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.

When possible, mount the RH2 humidifier at a height convenient for servicing.

Figure 4: Mounting Location / Clearance

Side clearance

for space models

only, see table

36 in. (92 cm)

in. ront learance

duct model

m f c

Additional front clearance

for space models,

see table

24 in.(61 cm)

Min Height

Mount Humidifier

Level

As Close as

Possible to Steam

Distributor

5-95%

Overhead clearance

for space models

only, see table

Humidifier Output lb (kg) Side in. (cm)

<4 (1.8) 12 (30) 12 (30)

6 (2.7) 16 (40) 18 (46)

8 (3.6) 18 (46) 18 (46)

7 ft (2.1 m)

min. Height

for space

models only.

36 (92)

42 (107)

48 (120)

Additional Clearance for Space Models Only

Overhead in. (cm) Front in. (cm)

Note: Do not mount on hot surfaces, where freezing can occur, vibrating surface, or floor.

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