Biasi
Biasi Main Heat Exchanger BI1172100
Main heat exchanger for Biasi Parva M90-24S and M90-24SR gas boilers, rated at 24kW.
At a glance
- Appliance family: Parva M90
- Also known as 24KW-MAIN-EXCHANGER, 1650257
Showing prices
£270.53
£225.44 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Biasi BI1172100 is the main heat exchanger for Biasi Parva M90 series gas boilers. It transfers heat from the combustion gases into the heating and hot water circuit. This unit is rated at 24kW.
Signs this part needs replacing
- Boiler locks out or fails to reach the set flow temperature
- Water leaking from the heat exchanger body or its connections
- Kettling, banging or gurgling noises during operation
- Discoloured or blackened water in the heating circuit
- Repeated overheat lockouts or a boiler that runs hot then cuts out
Before you order
- Confirm your boiler model and GC number match those listed above
- Inspect the heat exchanger body and connections for damage before fitting
- Isolate the appliance from gas, water and electrical supply before starting work
- Check whether seals and gaskets are required separately, as they are not confirmed as supplied with this part
Compliance
| GC number | E83-103 |
|---|---|
| Barcode / EAN | 8023585812754 |
| Alternative numbers | 24KW-MAIN-EXCHANGER, 1650257 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI BIASI PARVA M90-24S | — | — | — | |
| BIASI BIASI PARVA M90-24SR | — | — | — | |
| BIASI PARVA M90 - 24S | 47-970-13 | 47-970-13 | — | — |
| BIASI PARVA M90 - 24SR | 41-970-06 | 41-970-06 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.