Nortec On Digital Wall & Duct Humidistat Bedienungsanleitung PDF herunterladen

2556313—E | 3 October 2014 Introduction | 1

On / Off Digital Wall & Duct Humidistat Installation Instructions

This document covers the operation and installation instructions for the following Nortec Duct Humidistat:

Part #: Description:

2520273* On/Off Digital Duct Humidistat Pkg.

Note: Part #2520273 is comprised of two parts:

2520265 Humidistat w/o sensor

1509857 Duct Sensor

2520273 – On/Off Digital Duct Humidistat Installation

Note: The duct sensor (Part # 2520265) must be wired to the humidistat w/o sensor (Part # 1509857).

Part # 2520265 – Duct Humidistat Package Installation

Location

1. The duct sensor should be installed directly on the duct in an area where the air is well mixed with uniform flow.

2. The supply air sensor should be mounted downstream of the steam distributor at a distance 1.5 times the absorption distance (typically

10-12 feet or 3-3.7m).

3. If a return air humidity sensor is used it should be mounted close to the air inlet but downstream from a return fan if one is present.

Installation

1. Open the housing by removing the 4 screws securing the housing together.

2. Push the probe through the center hole and tighten the 2 mounting screws.

3. Drill a 1/2” (13mm) hole in the duct and insert the probe into the air stream.

4. Secure the sensor to the duct using 2 sheet-metal screws.

5. Connect the signal wires to the sensor terminal strip. Table 1 outlines the terminal layout of the digital humidistat.

6. Connect the plug from the temperature probe to the PCB board into the plug marked ‘PROBE’.

7. Close the cover and secure using the 4 Screws removed in step 1.

Table 1: Humidistat Terminal Layout

Controller w/o Sensor - (Part # 2520265)

Ground

24 VAC

Digital Out (Common)

Digital Out

Outdoor Temperature Input

Duct Sensor Input

Part # 1509857 – Duct Sensor Installation

Location

1. The duct sensor should be installed directly on the duct in an area where the air is well mixed with uniform flow.

2. The supply air sensor should be mounted downstream of the steam distributor at a distance 1.5 times the absorption distance (typically

10-12 ft or 3-3.7 m).

3. If a return air humidity sensor is used it should be mounted close to the air inlet but downstream from a return fan if one is present.

Installation

1. Open the housing by removing the 4 screws securing the housing together.

2. Push the probe through the center hole and tighten the 2 mounting screws.

3. Drill a 1/2” (13mm) hole in the duct and insert the probe into the air stream.

4. Secure the sensor to the duct using 2 sheet-metal screws.

5. Connect the signal wires to the sensor terminal strip. Table 1 outlines the terminal layout of the digital humidistat.

6. Connect the plug from the temperature probe to the PCB board into the plug marked ‘PROBE’.

7. Close the cover and secure using the 4 Screws removed in step 1.

Table 2: Sensor Terminal Connections

Duct Sensor - (Part # 1509857)

24 VAC

GND

Humidity Output

1 2 3 4 5 6

Inhaltsverzeichnis

Seite 1 - Part #: Description:

2556313—E | 3 October 2014 Introduction | 1 On / Off Digital Wall & Duct Humidistat Installation Instruct

Seite 2 - 2

2 | Introduction 21345 Humidistat LCD Display Legend for Figure 1. 1. Display of current humidity value. 2. Snowflake indicates outdoor tempera

Seite 3 - Specifications

2556313—E | 3 October 2014 Introduction | 3 Specifications Table 2: Specifications Power Supply Operating Vo

Seite 4 - 4

4 | Introduction Figure 4: Duct Sensor Dimensions Table 3: Troubleshooting Display Cause Symptoms Corrective Action ALA3 The controll

Seite 5

2556313—E | 3 October 2014 Introduction | 5

Seite 6 - 6

6 | Introduction

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Nortec On Digital Wall & Duct Humidistat Bedienungsanleitung

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Inhaltsverzeichnis

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