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Main Multipoint FF ISS C heat exchanger assembly 5111377
Primary heat exchanger assembly for the Main Multipoint FF ISS C water heater.
At a glance
- Also known as 1160717
- Have the replacement fitted by a Gas Safe registered engineer
Showing prices
£863.93
£719.94 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 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 5111377 is the primary heat exchanger assembly fitted to the Main Multipoint FF ISS C water heater. It transfers heat from the burner to increase the temperature of the water passing through the appliance.
Signs this part needs replacing
- Water leaking from around the heat exchanger
- Reduced or fluctuating hot water output
- Kettling or banging noises when the appliance fires
- Lockouts linked to overheat or flow sensors
Before you order
- Confirm your exact model against the fits list
- Match the part number printed on your existing heat exchanger
- Isolate gas, electricity and water before removal
- Have the replacement fitted by a Gas Safe registered engineer
Compliance
| GC number | H18-870 |
|---|---|
| Barcode / EAN | 5039177654001 |
| Alternative numbers | 1160717 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| MAIN MAIN MULTIPOINT FF | 52-467-02 | 52-467-02 | — | — |
| MAIN MAIN MULTIPOINT FF ErP | 52-467-02 | 52-467-02 | — | — |
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.