12-Plate Flat Type Combi Boiler Plate Heat Exchanger Compatible with Baymak Baxi (156.5mm Screw Spacing)

Specially manufactured to restore domestic hot water (DHW) comfort to standard values in combi boiler installations, the 12-Plate Flat Type Heat Exchanger is a spare part that technical services use with confidence, especially for complaints of water not heating due to scaling. With 156.5 mm screw (pin) spacing, it allows installation with original part (OEM) precision in combi boilers with the specific block design.

Full Compatibility for the Baymak and Baxi Group

It is designed to be fully compatible with certain models of the Baymak and Baxi combi boilers frequently encountered in the field. The 12 stainless steel plates pressed with special copper brazing technology show high resistance to pressure fluctuations and corrosion on both circuits of the appliance (primary and secondary). The flat surface design slows sediment build-up in the narrow channels, allowing the heat exchanger to perform longer in the field.

Technical Specifications and OEM Compatibility

The technical details of this product, manufactured for fast and trouble-free installation after fault diagnosis, are as follows:

• Model Type: I.T.M PHE161
• Number of Plates: 12 Plates (For standard-capacity hot water demand)
• Design Type: Flat Plate, Copper Brazed (Brazed Heat Exchanger)
• Screw (Pin) Spacing: 156.5 mm (Net center distance between mounting screws)
• Operating Temperature: Between -10°C and +120°C (High thermal shock resistance)
• Maximum Pressure (Primary Circuit): 3 bar (Central heating circuit safety limit)
• Maximum Pressure (Secondary Circuit): 8 bar (Domestic mains water pressure limit)
• Compatible Brands: Baymak, Baxi (appliances with a 156.5 mm block design)
• Reference OEM Codes: ITM2071200, JJJ005686670, 5686670, 248723, 7683965 (For compatibility confirmation)

Installation Note for Field Technicians

Technician Note: If there are hot water fluctuations on Baymak or Baxi appliances, it is worth checking the NTC sensors and the flow turbine before removing the heat exchanger. If the fault is definitely scaling/clogging in the plate heat exchanger, make sure when fitting the new part that the 156.5 mm center distance matches the hydraulic group exactly. Take care to tighten the screws crosswise and evenly. Remember that installations made without replacing the old O-ring seals can soon lead to water leaks.

Frequently Asked Questions

What is a 12-plate combi boiler heat exchanger used for?

It provides heat transfer in the domestic hot water (DHW) circuit of the combi boiler, heating the water that flows from the tap. It is a critical spare part replaced by technical services, especially for complaints of water not heating due to scaling.

Which combi boilers is this plate heat exchanger compatible with?

It is compatible with Baymak and Baxi group combi boiler models with a screw (pin) spacing of 156.5 mm. Before installation, it is recommended to verify by measuring the screw spacing of your existing heat exchanger.

What does 156.5 mm screw spacing mean for a heat exchanger?

It means that the net center distance between the mounting screws is 156.5 mm. This dimension determines whether the heat exchanger fits the block design of the combi boiler exactly.

What are the operating temperature and pressure values of this heat exchanger?

It operates between -10°C and +120°C and withstands a maximum pressure of 3 bar in the primary (central heating) circuit. The 12 stainless steel plates are pressed with copper brazing technology.

Can I buy regularly with an invoice as a service company/technician?

Yes, all our sales are invoiced. All orders, including those from service companies and technicians, are placed directly through our website.

How do I track my shipment after ordering?

Your shipment tracking number is sent to your e-mail and phone after ordering; you can follow its status in the “Where Is My Shipment?” section.

Can I return or exchange the product?

Yes. Under Consumer Protection Law No. 6502 you have the right of withdrawal/return within 14 days of delivery. To avoid ordering the wrong model, we recommend that you verify compatibility before ordering. Details are on our “Delivery, Returns and Exchanges” page.

What payment and instalment options are available?

You can pay by debit/credit card and Tosla, and take advantage of instalment/credit options through Fibabanka and Akbank. Current options are listed on our “Payment Options” page.

Where is Yedepa located and how is delivery made?

Yedepa is an e-commerce site; orders are placed through yedepa.com and shipped to your address by courier from our warehouses across Turkey and from our contracted suppliers. Our head office is at Cennet Mah. 2. Yavuz Selim Cad. No:68/A, Küçükçekmece / İstanbul.