Mounting The Filling Device; Assembly; Quick Reference Guide - Worcester Greenstar HIU Installation And Maintenance Instructions Manual

Assembly

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Fig. 8 Discharge pipe
[1] Discharge pipe (turned back onto external wall example)
[2] Outside wall
[3] Discharge pipe (into drain or gully example)
[4] External drain
4.4

Mounting the filling device

You have the following options for filling the system:
• Keyless filling loop (accessory, see separate instructions)
• Filling loop provided by the customer on the cold mains inlet
• Filling loop provided by the customer on the primary side return
System separator provided by the customer
▶ The sealed heating system must be filled using a WRAS approved
filling loop. See the following figure.
▶ Make sure the heating system is treated using a suitable inhibitor (
Appendix, Specifications).
▶ Mount filling loop between the pipes of the primary side return or
cold water inlet and the heating flow.
Fig. 9 Filling loop provided by the customer
[1] Primary circuit return / cold mains inlet
[2] Shut-off valve
[3] Non-return component
[4] Test point
[5] Pipework (filling loop)
[6] Heating circuit flow
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0010035460-01
5 Assembly
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Quick reference guide

▶ For detailed information, refer to the following chapters.
Fig. 10 Attach template, drill holes, install wall mounting bracket and
mounting plate
0010034532-01
Fig. 11 Insert gaskets and hang HIU
Greenstar – 6721852556 (2022/11)