System air PTC - DN125 User manual

Document in original language | 398046 · v1.1
PTC – DN125
Installation and Operating Instructions GB

398046 | v1.1
© Copyright Systemair UAB
All rights reserved
E&OE
Systemair UAB reserves the rights to change their products without notice.
This also applies to products already ordered, as long as it does not affect the previously agreed specifications.
Systemair is not liable or bound by the warranty if these instructions are not adhered to during installation or service.

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Contents
1 Introduction ...................................................1
1.1 Product description.................................1
1.2 Intended Use.........................................1
1.3 Document description .............................1
1.4 Product overview...................................1
1.5 Product liability ......................................2
2 Safety...........................................................2
2.1 Safety definitions ...................................2
2.2 Safety instructions..................................2
2.3 Personal protective equipment..................3
3 Transportation and storage................................3
4 Installation.....................................................3
4.1 To do before the installation of the
product................................................3
4.2 To install the product...............................4
5 Electrical connection ........................................4
5.1 To do before the electrical
connection............................................4
5.2 To connect the product to the power
supply .................................................5
6 Commissioning ...............................................6
6.1 To do before the commissioning ................6
6.2 To do the commissioning .........................6
7 Maintenance..................................................7
8 Troubleshooting..............................................7
9 Disposal........................................................8
9.1 To disassemble and discard the parts of
the product ............ ...............................8
10 Technical data ................................................9
11 EU Declaration of Conformity ........................... 10

Introduction | 1
1 Introduction
1.1 Product description
The product is a duct heater with an insulated PTC heating element and plastic housing.
The product is designed for installation in a ventilation system to heat up the air to a desired target temperature. The
product is controlled linearly via an analog signal 0–10 V or with Pulse-width modulation (PWM) signal.
The supply air must be clean and free of contaminants that could block or clog the built-in heating element. Use a filter
in front of the product. The product have to operate in an environment free of particles and dust.
The product has an in-built temperature limiter that prevents the overheat of the heating element.
The product has an error signal relay that is located on the control board. The error signal relay can be connected to the
ventilation system to indicate an error.
1.2 Intended Use
The product is used to heat the outdoor or supply air in the air duct.
The product is intended to be controlled via ventilation system.
A constant airflow of at least 40 m³/h must be ensured during the operation of the product.
The product is not applicable for use in permanently damp explosive, flammable or aggressive environment. The prod-
uct is not applicable for locations where there is a risk of explosion.
Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
1.3 Document description
This document contains instructions for installation, operation and maintenance of the product. The procedures must be
done by approved personnel only.
Speak to Systemair for more information on how to install the product in different installation locations.
1.4 Product overview
The product can be controlled either by an analogue voltage signal or a PWM signal.
Control signal Parameter
Analogue signal Voltage: 0 — 10 VDC
Signal input resolution: 1% (0.1 V)
Voltage proportional to the available heating power 0 — 100%
PWM signal • Voltage: 10 VDC
• Period duration: 1 s
• Pulse duration resolution: 1% (10 ms)
• Duty cycle proportional to the available heating power: 0 —
100%
Examples with 20% of available heating power:
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2| Safety
V
2 V
4 V
6 V
8 V
10 V
s 1 s 2 s 3 s 4 s
...
0
Fig. 1 Analogue signal: 2 V
V
10 V
s 1 s 2 s 3 s 4 s
0
...
Fig. 2 PWM signal: Period duration 1 s, pulse duration 200 ms
1.5 Product liability
Systemair is not liable for damages that the product causes in these conditions:
• The product is incorrectly installed, operated or maintained.
• The product is repaired with parts that are not original spare parts from Systemair.
• The product is used together with accessories that are not original accessories from Systemair.
2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out specially important parts of the manual.
Warning
If you do not obey these instructions, there is a risk of death or injury.
Caution
If you do not obey these instructions, there is a risk of damage to the product, other materials or the
adjacent area.
Note:
Information that is necessary in a given situation.
2.2 Safety instructions
Warning
Read the warning instructions that follow before you do work on the product.
• Read this manual and make sure that you understand the instructions before you do work on the product.
• Obey local conditions and laws.
• The ventilation contractor and the operator are responsible for correct installation and intended use.
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Transportation and storage | 3
• Keep this manual at the location of the product.
• Do not install or operate the product if it is defective.
• Do not remove or disconnect safety devices.
• Make sure that you can read all warning signs and labels on the product when it is installed. Replace labels that have
damage.
• Only permit approved personnel to work on the product and to be in the adjacent area during all work on the
product.
• Make sure that you know how to stop the product quickly in an emergency.
• Use applicable safety devices and personal protective equipment during all work on the product.
• Before you do work on the product, stop the product and wait until the heating element to cool. Make sure that there
is no voltage on the control board terminals.
• Do not operate the product near flammable materials, fluids, and gases.
• If the maintenance is not correctly and regularly done, there is risk of injury and damage to the product.
• Only do the maintenance as given in this manual. Speak to Systemair technical support if other servicing is
necessary.
• Always use spare parts from Systemair.
• The product is not to be used by persons, including children, with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have been given supervision or instruction.
• Do not allow children to play with the device.
2.3 Personal protective equipment
Use personal protective equipment during all work on the product.
• Approved eye protection
• Approved protective helmet
• Approved hearing protection
• Approved protective gloves
• Approved protective shoes
• Approved work clothing
3 Transportation and storage
Warning
Make sure that the product does not become damaged or wet during transportation. A damaged or wet
product can cause fire or electric shock.
Always transport the product the in the original packaging.
Prevent impact stress to the product and its packaging at all times.
Inspect the device for any transport damage after delivery. The product must be stored in the original packaging, dry,
weather-protected, at a temperature between -10 °C to 40 °C.
The packaging material must be disposed in accordance with local rules and regulations.
4 Installation
4.1 To do before the installation of the product
• Make sure that you have the necessary installation accessories.
• Use installation material with fire resistance rating for the installation location.
• Examine the packaging for transportation damage and remove the packaging from the product carefully.
• Examine the product and all components for damage.
• Install the product in a location where there is space for commissioning, troubleshooting and maintenance.
• Make sure that the installation location is clean and dry, for full safety during electrical work.
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4| Electrical connection
• Make sure that all cable glands are tight against the cables to prevent leaks.
4.2 To install the product
• The product can be installed horizontally or vertically in the air duct.
Warning
The product installation with electronic housing pointing downwards is not allowed. Possible condensate
in the ventilation system can otherwise penetrate the housing and cause damage to the electronics.
1. Connect the product to the air duct. Use only standard DN125 female connection with surrounding seals.
Caution
Use the air duct with high temperature resistance and check the air duct temperature during operation.
Note:
Use of fastening screws on the air duct and the product connection is not permitted.
2. Insulate the product.
Warning
Do not insulate the electric housing. Internal components heat
up during the operation and heat must be allowed to emitted
across the surface of the electric housing.
Caution
The housing of the product can heat up to 100 °C in case of
failure. Use insulation which can withstand such temperature.
5 Electrical connection
5.1 To do before the electrical connection
Make sure that the environment for electrical connection is clean and dry.
Make sure that the duct heater is connected to the electrical circuit with residual current circuit breaker.
Make sure to meet requirements for connection cables:
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Electrical connection | 5
Line Requirement
Power supply 230 VAC Cross-section area: 3 x 1,5 mm2
Line layout: single-wire or multi-wire
Maximum cable diameter: 8 mm
Recommended length for individual wires (L, N, PE): 80
mm
Combined line for control signal (10 VDC) and error signal
relay (230 VAC)
Rated voltage for the line allowed up to 230 VAC
Cross-section area: 4 x 0,5 mm2
Line layout: multi-wire (ferrules recommended)
Maximum cable diameter: 8 mm
Maximum cable length: < 3 m
Recommended length for individual wires: 80 mm
5.2 To connect the product to the power supply
1. Loosen 4 screws (M3.5 x 12 – T15) from the electrical junction box.
2. Remove the cover.
3. Connect the power supply cable to the J2 terminal (L, N, PE).
4. Connect the combined cable of the control signal and error signal to connection terminals J5 and J6.
5. Tighten both cable glands.
6. Close the junction box cover and install previously removed screws.
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6|Commissioning
Fig. 3 Wiring
No. Terminal Name Connection Description
1J6 Error signal Error signal relay (normally-
open contact) Max. 230 VAC
2
3
J5
AN+ analogue control signal 0 – 10 VDC
4 0 V 0 V control signal (GND) Combined reference
5 PWM PWM control signal 10 VDC
6
J2
LSupply voltage L 230 VAC
7 N Supply voltage N
8 PE Protective conductor PE Functional ground
6 Commissioning
6.1 To do before the commissioning
• Make sure that the installation and electrical connection are correctly done.
• Visually examine the product and accessories for damage.
• Make sure that the safety devices are correctly installed.
• Make sure that there are no blockages in the air inlet and the air outlet.
• Make sure that installation material and unwanted objects are removed from the product and the ducts.
6.2 To do the commissioning
1. Make sure that air is flowing through the heating element.
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