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REMEHA Calenta 28c - User Manual

REMEHA Calenta 28c
100 pages
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Netherlands
EN
High-efficiency wall-hung condensing gas boilers
Calenta 25s - 28c - 35s - 40c
Installation and
Service Manual
7600585-01

Table of Contents

Questions and Answers

  • U
    usmithAug 10, 2025
    What to do if the REMEHA Calenta 28c Boiler flow temperature sensor is short circuited?
    • M
      Mr. Benjamin BrownAug 10, 2025
      If the flow temperature sensor of your REMEHA Boiler is short circuited, it could be due to several reasons. First, check the wiring for any bad connections. Then, verify that the sensors are operating correctly and that the sensor has been correctly fitted. If these steps don't resolve the issue, consider replacing the sensor.
  • A
    Amy WilsonAug 16, 2025
    What to do if the REMEHA Calenta 28c safety parameters are incorrect?
    • J
      johnsonanneAug 16, 2025
      If the safety parameters for your REMEHA Boiler are incorrect, it might be due to a bad connection. In this case, check the wiring. Alternatively, the PSU could be defective, so consider replacing it.
  • R
    Robert DuncanAug 25, 2025
    What to do if the REMEHA Calenta 28c Boiler flow temperature sensor has an open circuit?
    • R
      richardperezAug 26, 2025
      If the flow temperature sensor of your REMEHA Boiler has an open circuit, first check the wiring for any bad connections. Also, check that the sensors are operating correctly and that the sensor has been correctly fitted. If the problem persists, replace the sensor.
  • B
    brandonfitzpatrickAug 31, 2025
    How to fix REMEHA Calenta 28c Boiler storage unit PSU parameter not found?
    • P
      Paige KruegerAug 31, 2025
      If the storage unit PSU parameter is not found in your REMEHA Boiler, the problem could be a bad connection. Check the wiring to resolve this issue.

Summary

Safety instructions and recommendations

Safety instructions

Instructions for gas leaks, flue gas leaks, and general safety.

Technical description

Technical specifications

Comprehensive table of technical data for the boilers.

Installation

Regulations governing installation

Lists regulations and standards for boiler installation.

Gas connection

Steps for connecting the gas supply.

Electrical connections

General section on connecting electrical components.

Electrical diagram

Comprehensive wiring diagram of the boiler.

Filling the system

Procedures for filling and treating water in the system.

Commissioning

Check points before commissioning

Lists essential checks before starting the commissioning process.

Commissioning the boiler

Step-by-step guide to the boiler commissioning process.

Gas settings

Procedures for setting the gas type and air/gas ratio.

Checks and adjustments after commissioning

Final checks and adjustments after initial commissioning.

Changing the settings

Guide to modifying boiler parameters.

Checking and maintenance

Troubleshooting

Error codes

Lists error codes, descriptions, probable causes, and solutions.

REMEHA Calenta 28c Specifications

General IconGeneral
TypeCombi Boiler
Output28 kW
Fuel TypeNatural Gas
MountingWall-mounted
DHW output28 kW
Warranty2 years
CH output28 kW

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