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Ideal Fill Loop Kit HIU Indirect 177770

Ideal

Ideal Fill Loop Kit HIU Indirect 177770

Ideal 177770 indirect fill loop kit for Ideal Commercial HIU appliances, with alternative part number 1783153.

At a glance

  • Part type: Fill loop kit, indirect
  • Appliance family: Ideal Commercial HIU
  • Also known as 1783153
Manufacturer part no.
177770
Showing prices

£96.01

£80.01 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 Ideal 177770 is an indirect fill loop kit for heating interface units (HIUs). It is produced within the Ideal Caradon range and provides the temporary filling connection used to pressurise and top up the sealed heating circuit on the appliance. The loop links the mains cold water supply to the heating side of the HIU so system pressure can be raised during commissioning, servicing or routine maintenance.

Signs this part needs replacing

  • System pressure will not hold and the appliance needs frequent topping up
  • Water weeping or dripping from the filling loop connection
  • The filling valve does not shut off fully once the circuit is pressurised
  • Scale, corrosion or perished seals visible around the loop assembly
  • Pressure gauge continues to rise when the loop should be isolated

Before you order

  • Confirm the appliance model and serial number against the compatibility list
  • Compare the existing component with part number 177770 and alternative number 1783153
  • Inspect the connection seals and washers and renew them if worn

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.