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Schwank infraSchwank D 50 U - User Manual

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infraSchwank D / calorSchwank D
Radiant Tube Heater
15 U / 20 U / 30 U / 40 U / 50 U / 60 U
1-stage / modulating lambdaPlus
single heater and flue gas collection system [herringbone] type F
Technical Manual
Technical Instructions
Operating Instructions
Legal Requirements
Assembly Instructions
Installation Instructions
Commissioning
Service Guide
0085BO0037
Version 021 infra D U-Form 16/19
Technische Änderungen vorbehalten

Table of Contents

Questions and Answers

  • C
    Chad MorenoAug 9, 2025
    What to do if my Schwank Heater shows error code 1 (ionization error during start)?
    • J
      Jessica BrownAug 9, 2025
      If your Schwank Heater displays error code 1, indicating an ionization error during start, it could be due to several reasons. First, check the gas line to ensure it is properly vented and that the gas cock is open. Other potential causes include a faulty gas valve (which would need replacement), damaged or dirty ignition and ionization electrodes (inspect, clean, or replace them), an incorrect gas throttling screw setting (adjust it accordingly), or poor grounding (ensure proper grounding of the system).
  • G
    Gerald BenjaminAug 14, 2025
    What causes Schwank infraSchwank D 50 U Heater error code 10 (MODBUS signal missing error) and how to fix it?
    • M
      Michael MasonAug 14, 2025
      Error code 10 on your Schwank Heater indicates a missing MODBUS signal. This can occur due to an interruption in the MODBUS connection lasting longer than 3 minutes, in which case you should restore the MODBUS connection. Alternatively, it may be caused by incorrect wiring between the IC4000/1 and the SchwankControl Touch; ensure that the wiring is correctly configured.
  • A
    Alejandro FinleyAug 21, 2025
    Why does my Schwank infraSchwank D 50 U Heater show error code 2 (ionization error during operation)?
    • K
      Kelly JohnsonAug 21, 2025
      Schwank Heater error code 2, which indicates an ionization error during operation, can be attributed to a poor low ionization current (less than 0.7?A DC). In this case, increase the ionization current. Another possible cause is too low connection pressure, so check and adjust the connection pressure accordingly.
  • D
    David CastilloAug 27, 2025
    What to do if my Schwank infraSchwank D 50 U Heater displays error code 5 (encoder signal missing error)?
    • E
      edavisAug 27, 2025
      If your Schwank Heater is showing error code 5, which means the encoder signal is missing, it could be because the PWM fan isn’t running due to issues like a broken impeller or motor. Try to repair or replace the PWM fan. Another possible reason is a broken PWM cable, which would need to be replaced.
  • J
    jessicacalhounSep 2, 2025
    How to fix Schwank Heater error code 9 (wrong setting fan speed parameters)?
    • J
      James ThompsonSep 2, 2025
      Schwank Heater error code 9 signals that the fan speed parameters are set incorrectly. This could be due to wrong settings for the fan speed parameters [PP04, PP05, PP06], so adjust the fan speed parameters accordingly. It may also indicate a damaged fan, such as bearing failure, in which case you should replace the damaged fan.

Summary

1 Introduction

Notes for your safety

General safety advice and instructions for safe operation of the appliance.

Safety for the electrical equipment

Crucial safety measures for electrical work, emphasizing qualified personnel and power isolation.

2 Your Safety

3 Scope of Delivery

Scope of delivery

Lists the main kits included in the radiant tube heater package.

4 Planning

Position of suspension

Guidelines for determining safe suspension heights to avoid extreme heat exposure.

Suspension height

Table detailing minimum suspension heights based on nominal thermal load.

Distances to flammable materials in the radiant area

Safety distances to flammable materials to prevent ignition.

Air supply; Exhaust Requirements

Air supply; exhaust systems

Outlines different air supply and exhaust system configurations for the heaters.

5 Legal Requirements

6 Operation

Switching on the heater

Procedure for starting the heater via the central control unit.

Switching off the heater

Procedure for disabling the heating command on the control unit.

Fault

Describes heater fault conditions, lockout, and reset procedures.

Maintenance

Emphasizes regular servicing by qualified engineers.

7 Technical specification

MODBUS Connection

Instructions for connecting MODBUS for control.

8 Operating description

Start-up Procedure

Step-by-step guide for the initial startup sequence of the heater.

Heater Operation

Explains how the heater produces infrared radiation and its combustion system.

Fault Handling

Describes fault conditions, error codes, and lockout procedures.

Combustion Air Monitoring

Explains how combustion air supply is monitored and controlled.

9 Assembly instructions

Assembling the Radiant and Burner Kit

Instructions for assembling the radiant tube and burner kit components.

Assembly of Burner Kit Exhaust Gas Collection System

Conversion Kit for Exhaust Gas Collection

Details the conversion kit and steps for integrating into an exhaust system.

10 Installation instructions

Safety Warnings for Gas Installation

Critical safety warning regarding gas handling and installation.

Gas Pipe System and Heater Mounting

Instructions for connecting gas pipes and mounting the heaters.

Electrical Installation [Wiring Diagram]

Electrical Safety Precautions

Warning about electric shock and safety measures for electrical work.

Electrical Connection: Operation Without MODBUS

Details electrical connection for 1-stage and modulating operation without MODBUS.

Modulating Operation without MODBUS

Instructions for modulating operation without MODBUS communication.

11 Commissioning Instructions

Pre-Commissioning Checks

Commissioning Safety Warning

Parameter IC 4000;1 and Settings

Manual Parameter Adjustment

Adjusting Thermal Load: Single-Stage Operation

Nozzle Pressure Adjustment Warning

Nozzle Pressure Adjustment Procedure

Adjusting Thermal Loads: Modulating Operation

Modulating Operation Setup Requirements

Modulating Operation Adjustment Procedure

Commissioning Exhaust Gas Collecting System [Herringbone]

Pre-Startup Checks

Startup Procedures

Commissioning Steps

Steps for adjusting negative pressure and fixing dampers for safe exhaust gas evacuation.

Required Negative Pressure Levels

Determination of Nozzle Pressure

12 Service Guide; Troubleshooting

Maintenance and Annual Checks

Details essential maintenance tasks and checks for faultless operation.

Safety: Close Gas Cock Before Maintenance

Critical safety instruction to close the gas cock before maintenance.

Comprehensive Maintenance Checklist

Error Codes

General Error Handling and Lockout

Explains general error handling, lockout, and communication protocols.

Post-Purge Fan Operation and Lockout

Specific Behavior for Error Code A

Error Code 1: Ionization Error During Start

Troubleshooting; Error Causes

Causes for Error Code 1

Causes for Error Code 2

Causes for Error Code 5

Causes for Error Codes 7 and 8

Causes for Error Code 9

Causes for Error Code 10

13 Change of Gas Family

Gas Family Change Instructions

15 Spare Parts

Spare Parts List for infraSchwank D; calorSchwank D 15-60 U

16 EC Type Examination Certificate

EU Type Examination Certificate Details

17 EC Declaration of Conformity

EC Type Examination Certificate Number

18 Ecodesign Regulation Product Information

Ecodesign Data for infraSchwank D

Ecodesign Data for calorSchwank D

Schwank infraSchwank D 50 U Specifications

General IconGeneral
BrandSchwank
ModelinfraSchwank D 50 U
CategoryHeater
LanguageEnglish

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