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Comprehensive guide for installation, commissioning, and test run of Daikin Altherma HT + Flex Type units. Includes precautions, circuit information, field settings, and operational guidelines.
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Installation, Commissioning & Test Run HT Training Course Daikin Altherma HT + Flex Type (S-HTF01-004)
Installation, Commissioning & Test run (1) • Installation precautions • Service space • Refrigerant circuit • Water circuit • Field wiring • Remote controller • How to use • Operations • Field settings
Installation, Commissioning & Test run (2) • Pre-operation checks • Final checks • Test run • Flow charts
Handling outdoor unit Grips are foreseen to lift the unit
Strong wind On places exposed to strong wind (5 m/s or more)
Drain work • Prepare water drainage around the foundation • If water drainage is not possible, put unit on concrete blocks, etc with a height of at least 150mm • In places exposed to frequently snow, elevate foundation as high as possible • If installed on a building frame, install waterproof plate within 150mm of underside unit or use drain kit
Cold climates • Install outdoor unit with suction side facing the wall • Never install with suction side directly to wind • If necessary, install baffle plate on air discharge side of outdoor unit • Make sure heat exchanger coil is not affected by the snow
Precaution foundation Screw foundation bolts until their length are 20mm from foundation surface
Removing transportating stay The yellow transportation stay installed over the compressor leg for protecting the unit during transport must be removed If unit is operating with transportation stay attached, abnormal vibration or noise may be generated
Holes prevention To prevent rusting To prevent entering foreign objects After knocking out the knock-out, it is recommended to apply paint to the edge and the surrounding end surfaces to prevent rusting
Installation precautions indoor unit • Indoor unit should not be installed in sound sensitive rooms (living room, bedroom, …) • Indoor unit should not be installed in rooms with a humidity over 85% (bathroom, …) • Frost free • Strong foundation • Dust free • Nothing placed on top of unit • No possible water damage in case of leak
Final installation position 2 lifting supports are delivered in the accessory bag
Water pipes Use different knockout holes for refrigerant pipes
Position water filter standard filter
Sound insulation (1) Insulate knock out holes Drop sound plates on both sides to the ground
Sound insulation (2) Install the sound bottom plate
Sound insulation parts (3) Install top panel (sound insulation + drain purpose) Stick insulation (see accessory bag) to the top decoration panel
Installation precautions tank EKHTS • A drain device should be installed on the cold water connection on DHW tank • It is not allowed to add any kind of glycol to the water circuit • In cases where during longer periods of time there is no consumption of hot water, the equipment must be flushed with fresh water before usage • Immediatly after installation, the DHW tank must be flushed with fresh water. This procedure must be repeated at least once a day the first 5 consecutive days after installation
Installation precautions tank EKHWP • Ground load-bearing capacity of 1050 kg/m² • Not be exposed to direct sunlight • Protected from frost • Suitable water treatment may be required (corrosive water?) • Service space: 200mm
Required space installation –Tank EKHWP Distance to the walls: 200mm
Pipe directions – Outdoor unit 4 refrigerant pipe directions possible
Refrigerant pipes AA-model 2 refrigerant pipe directions possible 2 water pipe directions possible direction pipes deliverd with indoor unit
Leak test and vacuum drying • Use a 2-stage vacuum pump with a non-return valve which can evacuate to a gauge pressure of -100.7kPa • Connect the vacuum pump to both service port of gas stop valve and liquid stop valve to increase efficiency • Make sure gas stop valve and liquid stop valve are firmly closed before performing the leak test or vacuum drying
Leak test • Vacuum leak test • Evacuate the system from the liquid and gas piping to -100 kPa • Turn off vacuum pump and check pressure for at least 1 minute • Pressure leak test • Break the vacuum by pressurizing with nitrogen gas to a minimum gauge pressure of 0.2 MPa (Never higher than 4.0MPa) • Tests for leaks by applying bubble test solution to all piping connections • Do not use soap water -> soap contains salt and ammonia -> can freeze and/or lead to corrosion • Discharge all nitrogen gas
Vacuum drying • Evacuate the system for at least 2 hours to a target vacuum of -100 kPa • Check that, with vacuum pump off, target vacuum is maintained for at least 1 hour • In case of moisture (failing of 2 above steps), break vacuum by pressurizing xith nitrogen gas to a gauge pressure of 0.05MPa and repeat above steps 1 to 2 • Open stop valves After opening stop valve, it is possible that pressure in refrigerant piping does not rise. This might be caused by e.g. closed state of expansion valve in outdoor circuit, but does not present any problem for correct operation of unit
Charging refrigerant R410A Factory charge: 4,5 kg Additional charge ONLY required when >10 m Complete recharging
Charging refrigerant • Charge refrigerant R410A in liquid state to the liquid pipe • Before charging, check whether the refrigerant cylinder has a syphon attached or not and position the cylinder accordingly to figure below:
