Schwank calorSchwank D 30 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

A
andrewwebbAug 9, 2025
What to do if my Schwank calorSchwank D 30 U Heater shows error code 1 (ionization error during start)?
- W
  Wendy CastilloAug 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).
U
uevansAug 15, 2025
What causes Schwank calorSchwank D 30 U error code 10 (MODBUS signal missing error) and how to fix it?
- D
  David McdonaldAug 15, 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.
M
Matthew RobinsonAug 20, 2025
Why does my Schwank calorSchwank D 30 U Heater show error code 2 (ionization error during operation)?
- T
  Thomas DorseyAug 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.
M
martinezgarrettAug 27, 2025
What to do if my Schwank Heater displays error code 5 (encoder signal missing error)?
- S
  Susan GonzalezAug 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.
A
Antonio LewisSep 1, 2025
How to fix Schwank Heater error code 9 (wrong setting fan speed parameters)?
- H
  Haley CarterSep 1, 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

Introduction and Safety

General Safety Notes for Heaters

General safety instructions for operating the radiant tube heater.

Electrical Safety Precautions

Precautions for safe electrical work on the appliance.

Planning Considerations

Flammable Material Safety Distances

Safety distances for flammable materials near the radiant tube.

Flexible Exhaust System Installation

Safety Distances for Wall Terminal Exhaust

Required safety distances for exhaust pipes.

Roof Terminal Flexible Exhaust Systems

Safety Distances for Roof Terminal Exhaust

Required safety distances for exhaust pipes.

Stainless Steel Exhaust Systems

Safety Distances for Stainless Steel Exhaust

Required safety distances for exhaust pipes.

Stainless Steel Roof Terminal Systems

Safety Distances for Stainless Roof Exhaust

Required safety distances for exhaust pipes.

Heater Operation

Heater Startup Procedure

Procedure for starting the radiant tube heater.

Heater Shutdown Procedure

Procedure for stopping the radiant tube heater.

Heater Reset Procedure

How to reset the heater after a fault.

Regular Heater Maintenance

Recommendations for regular servicing of the heater.

Operating Description

Heater Startup Procedure

Step-by-step procedure for starting the heater.

Fault Conditions and Lockout

Description of fault conditions and lockout procedures.

Assembly Instructions

Radiant and Burner Kit Assembly

Instructions for assembling the radiant and burner kit.

Burner Kit Conversion for Exhaust System

Burner Kit Conversion Steps

Installation Instructions

Critical Fire and Explosion Warnings

Critical warnings regarding gas pipe handling and ignition risks.

Qualified Installer Requirement for Gas

Requirement for qualified installers for gas systems.

Gas Pipe System and Heater Mounting

Electrical Installation and Wiring

Electrical Safety Precautions

Critical warnings about high-voltage electrical hazards and isolation.

Wiring for Non-MODBUS Operation

Modulating Operation Signal Connection

Specific connection for modulating signal without MODBUS.

MODBUS and Exhaust System Electrical Connections

MODBUS Control Wiring

Commissioning Instructions

Before Commissioning Checks

Prerequisites, functional checks, and site-specific adjustments.

Commissioning Safety Notes

Warning about potential mist from metal units during commissioning.

MODBUS Addressing and Identification

Assigning MODBUS Addresses

Requirement to assign MODBUS addresses for networked heaters.

Nozzle Pressure and Thermal Load Adjustment

Adjusting Nozzle Pressure (Single-Stage)

Step-by-step guide for adjusting nozzle pressure in single-stage operation.

Adjusting Thermal Loads (Modulating)

Procedure for adjusting thermal loads in modulating operation.

Modulating Operation Adjustments

Exhaust Gas Collecting System Commissioning

Pre-Startup Checks and Procedures

Initial checks, system startup, and slope verification.

Commissioning and Negative Pressure Adjustment

Ensuring safe exhaust gas evacuation via negative pressure adjustment.

Service and Troubleshooting Guide

Maintenance and Annual Checks

Guidelines for regular maintenance and annual checks.

Critical Safety Step: Gas Cock Closure

Essential safety procedure before performing maintenance.

Comprehensive Maintenance Checklist

Error Codes and Handling

General Error Response and Lockout

How the system responds to errors and initiates lockout.

Fan Behavior and Reset Procedures

Fan operation during post-purge and heater reset methods.

Troubleshooting Error Causes

Error Code 1 & 2 Cause Analysis

Error Code 5 Cause Analysis

Error Code 7, 8, & 9 Cause Analysis

Error Code 10 Cause Analysis

Gas Family Change Procedure

Step-by-Step Gas Family Change

Step-by-step guide for changing the gas type.

Gas Filter Groups

Importance and Types of Gas Filters

Water Protection Cover for Burner Kit

tetraSchwank Heat Exchanger

Spare Parts for Burner Kit

Schwank calorSchwank D 30 U Specifications

General

Category	Heater
Model	calorSchwank D 30 U
Type	Infrared Tube Heater
Heat Output	30 kW
Fuel Type	Natural Gas / Propane
Efficiency	92%

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