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7.0 Heat pump installation This section covers good-quality and safe installation of the indoor and outdoor heat pump units, connecting the units to pipework, testing the system for pressure/leaks and evacuation of the system (which must occur after pressure testing). Some general rules for installing heat pump units are: • Follow the manufacturer’s instructions. • Use tools and equipment appropriate to the task and in a well-maintained condition. • Ensure components are compatible. • Keep the entire system clean and dry. 7.1 Pre-installation checklist There are a number of things to check before going ahead with installation of the heat pump units. Unit components ❏❏ Check that the unit is what was specified and that model numbers match. ❏❏ Remove the unit from the packaging and check that all components are supplied. ❏❏ Check for any damaged components. ❏❏ Ensure that installation and owner manuals are supplied. Trade co-ordination ❏❏ Confirm on-site trade co-ordination between the installer, builder (for new construction) and the electrician (only a registered electrician can hard wire the installation of the heat pump units). Site safety ❏❏ Follow the Health and Safety in Employment Act health and safety requirements for a building site. These should include: – the installer holding a Sitesafe passport and no-loss certification for refrigerant handling – using tools and equipment safely – securing and storing all materials, plant and equipment safely. ❏❏ Maintain safety procedures including electrical safety requirements when working on an existing building. On-site checks 34 ❏❏ ❑ ❏❏ ❑ ❏❏ ❑ ❏❏ ❑ Check and measure indoor and outdoor locations for available space, access and required clearances for installation and servicing (see 4.7 Step 5: Locate the units). Check the system pipe run does not exceed maximum length and differential height recommended by the manufacturer (Figure 7.1). Confirm the walls are able to provide fixing and support. Identify the location of a suitable power source (see 9.0 Electrical requirements).PDF Image | Heat pump installation Good Practice Guide
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