Bithermal Heat Exchanger Manaut GLM5 13 20 Ref. 87167085750
RefurbishedManautBithermic heat exchanger

Bithermal Heat Exchanger Manaut GLM5 13 20 Ref. 87167085750

Stock · 3 units

When you turn on the tap or start the heating, the Manaut GLM5 13 20 heat exchanger Ref. 87167085750 is responsible for heating the domestic hot water and the heating circuit at the same time. If this part fails, you may notice that the water comes out lukewarm, that there are fluctuations in temperature, or that the circuits are mixing. This heat exchanger is compatible with models such as Leblanc ACLEAGLM, Leblanc GLM4, and Manaut GLM5. Replacing this part is necessary when you observe those symptoms or if there are internal leaks.

VAT included

Compatibility

Compatible Biasi boilers

Bithermal heat exchanger. Five confirmed compatibilities: Leblanc ACLEAGLM and Leblanc ACLEAVMC.

Proven compatibility

Boiler modelFamilyVerification
Biasi Leblanc ACLEAGLMELMContrasted
Biasi Leblanc ACLEAVMCELMContrasted
Biasi Leblanc GLM4ELMContrasted
Biasi Leblanc GLM5ELMContrasted
Biasi GLM5.13/20ManautContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if it is the part for your boiler

What determines it is not the boiler model, but the reference printed on the part you already have installed.

  1. Find the reference printed on the installed part and check whether it matches the catalogue reference —. If it is not visible, do not identify the part by its shape alone.
  2. Check the full boiler model on its data plate and look for it in the model associations on this page.
  3. Compare the connections and physical body with the original part before installation.
  4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Diagnosis and fault codes

Symptoms and faults that the bivalent heat exchanger resolves.

The bivalent heat exchanger transfers heat to heating and domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

  • 01

    The hot water comes out in a jet but is getting less hot each time, although the boiler seems to be working fine.

    Cause: Limescale builds up in the bivalent heat exchanger, reducing heat transfer to the domestic hot water.

    Check the hardness of the water in your area and verify if the boiler has a water softener; if it hasn't been treated for years, there may be scale build-up.

  • 02

    When opening the hot water tap, the pressure in the heating circuit rises and sometimes the safety valve trips.

    Cause: This indicates an internal crack in the dual heat exchanger, allowing the mains water to pass into the heating circuit.

    Note the pressure on the manometer with the tap closed and again with the tap open; if the pressure clearly rises, there is likely an internal leak.

  • 03

    A noise like boiling water or bubbling is heard inside the boiler when it heats up.

    Cause: The water trapped between the scale and the walls of the heat exchanger gets too hot and causes that noise.

    Check if the noise coincides with the burner startup and disappears when turned off; if so, it points to a blockage in the heat exchanger.

  • 04

    The boiler heats the heating system well, but the domestic hot water hardly comes out hot.

    Cause: The heat exchanger distributes heat between the circuits; if the domestic hot water flow is blocked, it will not transfer heat even if the rest is functioning.

    Measure the flow rate of hot water at the nearest tap; if it is very low compared to the cold water, it is possible that the passage is restricted.

These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.

Technical data

Data sheet for the Biasi double heat exchanger.

Brand
Manaut
Type of part
Bithermic heat exchanger
Units in stock
3 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Frequently Asked Questions

Frequently asked questions about the double heat exchanger

Does this bivalent heat exchanger fit the ELM Leblanc GLM4?
Yes, the ELM Leblanc GLM4 is on the list of compatible boilers, along with ELM Leblanc ACLEAGLM, ACLEAVMC, GLM5, and Biasi GLM5.13/20.
When should the bivalent heat exchanger of the ELM Leblanc ACLEAVMC be replaced?
When it loses tightness, gets blocked, or the boiler stops heating properly.
Is the same part for the Biasi GLM5.13/20 as for the ELM Leblanc GLM5?
Yes, both models are on the list of compatible boilers for this double heat exchanger.

Spare parts related to Biasi ELM

Entrega calculada por destinoDelivery time shown at checkout
1-year warrantyreviewed and tested
14-day returnuninstalled parts
Technical supportwe verify your model
Bithermal Heat Exchanger Manaut GLM5 13 20 Ref. 87167085750