Description
The Viessmann CB11-17 Plate Heat Exchanger 7859038 is a genuine brand-new replacement plate heat exchanger designed for selected Viessmann Vitodens 050-W, 100-W, 111-W, 200-W and 222-F boilers. Supplied under manufacturer part number 7859038, this plate heat exchanger comes with a 12-month warranty. Before ordering, always confirm your boiler model and manufacturer part number to ensure compatibility.
The plate heat exchanger transfers heat from the boiler’s primary heating circuit to the domestic hot water supply, providing instant hot water without mixing system water. A faulty or blocked plate heat exchanger may cause poor hot water performance, fluctuating water temperatures or reduced boiler efficiency. Installation should be completed by a suitably qualified Gas Safe registered engineer.
Product Details
Brand: Viessmann
Part Type: Plate Heat Exchanger
MPN: 7859038
Warranty: 12 Months
Condition: Genuine Brand New
Boiler Compatibility
Viessmann Vitodens 050-W
VITODEN050W B0KA-M 30 COMBI NG
VITODEN050W B0KA30 V1 COMBI NG
Viessmann Vitodens 100-W
VITODENS 100W B1KF30 COMBI NG
VITODENS 100W B1KF30M COMBI NG
Viessmann Vitodens 111-W
VITODENS 111W B1LF25 SYSTEM NG
VITODENS 111W B1LF32 SYSTEM NG
Viessmann Vitodens 200-W
VITODENS 200W B2KE30 COMBI NG
VITODENS 200W B2KF30 COMBI NG
Viessmann Vitodens 222-F
VITODEN222F B2TF25 V1 COMBI NG
VITODEN222F B2TF25 V2 COMBI NG
VITODENS 222F B2TE25 COMBI NG
Before ordering, please check your boiler model and Viessmann manufacturer part number 7859038 to ensure this is the correct replacement part for your appliance.
Delivery & Collection
Collection is available from our Newcastle showroom at Unit 5, Penn Street, Newcastle upon Tyne, NE4 7BG, subject to stock availability. We also offer fast UK delivery via Royal Mail First Class or DPD Next Day, with most orders arriving within one to two working days. Boiler components should be installed by a suitably qualified Gas Safe registered engineer.
Warranty
This brand-new genuine Viessmann boiler plate heat exchanger is supplied with a 12-month warranty. Warranty claims may be subject to inspection and confirmation that the component was correctly selected and professionally installed.
Returns
We accept returns within 30 days of delivery. The product must be unused, unfitted and returned in its original unopened packaging with all seals intact. We cannot accept returns for components that have been fitted, used, damaged or returned in an unsuitable condition. Please check the boiler model, GC number, edition, serial-number range and part number carefully before ordering.
If you need any help, our team is happy to assist. Please contact us by phone or WhatsApp chat.
Frequently Asked Questions
Is the Viessmann 7859038 plate heat exchanger compatible with my boiler?
This plate heat exchanger is compatible with selected Viessmann Vitodens 050-W, 100-W, 111-W, 200-W and 222-F boilers listed above. Always verify your boiler model and manufacturer part number before ordering.
What does the Viessmann 7859038 plate heat exchanger do?
The plate heat exchanger transfers heat from the primary heating circuit to the domestic hot water supply, providing instant hot water while keeping the two water circuits separate.
What symptoms may indicate a faulty plate heat exchanger?
Common signs include hot water running hot and cold, reduced hot water flow, poor hot water performance, limescale build-up or inconsistent water temperatures. A professional diagnosis is recommended as these symptoms may also have other causes.
How do I confirm that 7859038 is the correct replacement part?
Check your boiler model and confirm that Viessmann manufacturer part number 7859038 matches the original component or the official spare parts documentation.
Does this product come with a warranty?
Yes. This genuine brand-new Viessmann plate heat exchanger is supplied with a 12-month warranty.
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