Evidence shall show that knowledge has been acquired of safe working practices and positioning, assembling and starting up split air conditioning and water heating heat pump systems. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EJ105A Split air conditioning and water heating heat pump system installation Evidence shall show an understanding of split air conditioning and water heating heat pump system installation, start-up and decommissioning, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects: T1 Sustainable energy The earth's atmosphere The greenhouse effect Energy usage in Australia (gases, coal, fuel oil etc) Projected population increase and its effects International and national greenhouse imperatives: the role of regulators and similar bodies (Kyoto Protocol) T2 Sustainable energy work practices Definitions Renewable energy technologies (solar, wind, biomass, geothermal, tidal, hydro, nuclear) The concept of co-generation Economic benefits of sustainable energy initiatives T3 Heritage awareness Heritage listings (concept and types (world, national, commonwealth etc)) Purpose of regulations related to maintenance of listed sites Responsibilities while working in and around listed sites Environmental protection Government agencies (AGO, EPHC, DEC etc) Environmental protection (land, water, atmosphere, human settlement, biodiversity etc) Purpose of regulations related to environmental protection Responsibilities while working in and around environmentally protected sites Protocols for working in and around protected sites (legislated acts - ozone protection etc) T4 Relevant installation codes Applicable standards and codes (building, electrical, health, environmental – OH&S act, ozone protection act, Refrigerant Handling Code of Good Practice Introduction to MEPS (minimum energy performance standards) and the star rating T5 Split air conditioning systems T6 Types and applications categories (high wall, floor mounted, ceiling mounted, cassette, ducted) sub categories (single head, multi head) types (cooling only, reverse cycle, inverter, dc) typical applications for each category / type system ratings (hp vs kw, standard ambient conditions for capacity ratings ,actual star rating examples) Components, construction and operation evaporators (finned induced and forced draught) metering devices (capillary, restrictor) service ports (ball valves, post valves, schrader valves) reverse cycle (reversing valves) air distribution – non-ducted (fans, filters, swing louvers etc) air distribution - ducted (ducting types, bto's, dampers, outlets, grilles, plenums, filters etc) typical ducting layouts (maps) typical mechanical system layouts (cooling only, reverse cycle) evaporating and condensing temperatures / pressures - design and typical operating values controls - operating and safety (encapsulated lp & hp sensors, compressor overload, de-ice stat etc) T7 Split water heating heat pump systems Types and typical applications. including hot water heating and swimming pool heating Components, construction and operation Cooling coil Heating coil Metering devices (capillary, restrictor) Service ports (ball valves, post valves, Schrader valves) Typical mechanical system layouts Evaporating and condensing temperatures / pressures - design and typical operating values Controls - operating and safety (encapsulated LP & HP sensors, compressor overload, etc) T8 Installation of unit and pipework Respect for customers premises (on-time, respectful language, private commodities, toilets, clean-up etc) Noise and vibration (problems for neighbours, typical council requirements) Location & mounting - outdoor unit (suitable locations, slabs, brackets (wall/roof), machine pads (e.g. waffle) etc) Location & mounting - indoor unit/water heater (suitable locations, penetrations, hanging, mounting methods) Refrigerant piping (layout, installation, insulation, pair coil, protection (steel trunking, plastic pipe duct)) Condensate drains and pumps (correct drainage, safety drain on FCU, condensate pumps) Personal safety (safe lifting, correct use of ladder and platforms) Manufacturers installation instructions (examples of typical manufacturers installation guides) Electrical connections by electrician Mains water connections by plumber T9 System start up Manufacturers start-up instructions (examples of typical manufacturers guides) Pressure testing refrigerant pipework and system (nitrogen) Evacuation Opening outdoor unit valves Checking refrigerant charge (pressures, temperatures, sweat line, evaporator superheat etc) Adding refrigerant (manufacturers recommended top-up values for longer pipework runs) Leak detection Customer familiarisation (completing warranty card, operating instructions, general maintenance instructions) T10 De-commission split air conditioning systems Closing isolations valves on outdoor unit. Indoor unit pump down and recovery Sealing refrigerant components Electrical isolation and disconnection by electrician Mains water isolation and disconnection by plumber Unit, piping, drain and electrical cable removal |