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CENTRAL AIR-CONDITIONING
DC Inverter Outdoor Unit
Installation Manual
Dear users:
Thank you for selecting CHIGO central air conditioner!
This Manual is the universal version for DC variable frequency VRF outdoor units. If the appearance of
your air conditioner is different from that of the air conditioner in the Manual, it will not affect its
operation and use.
Please read this Manual before use carefully, and keep this Manual well for future reference.
To protect your lawful rights and interests, your air conditioner shall be installed by a professional staff.
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Summary of Contents for Chigo CMV-MINI
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Page 1: Installation Manual
Installation Manual Dear users: Thank you for selecting CHIGO central air conditioner! This Manual is the universal version for DC variable frequency VRF outdoor units. If the appearance of your air conditioner is different from that of the air conditioner in the Manual, it will not affect its operation and use. -
Page 3: Table Of Contents
Table of Contents 1 Safety Precaution 2 Key Points for Construction Inspection 3 Installation of Outdoor Unit 4 Installation of Connecting Pipe 5 Electrical Wiring 6 Trial Run... -
Page 5: Safety Precaution
1 Safety Precaution WARNING * This air conditioner is a comfortable unit. Don't use it in some special places for machine rooms, precise instruments, foods, plants, animals, artworks, etc. · The installation shall be done by the distributor or the professional staff. The installation staff must have related professional knowledge. Misoperation in the self-installation will result in fire, electric shock, injury, water leak, etc. -
Page 6: Installation Of Outdoor Unit
3 Installation of Outdoor Unit WARNING · The air conditioner must be installed in the place, which is strong enough to support the weight of the machine. · If it is not strong enough, the machine may fall down and cause some personal injury. ·... - Page 7 3.4 Hoisting of outdoor unit 1) Don't remove any package upon hoisting. Two ropes (more than 8cm) shall be used to hoist the well-packaged machine stably and safely. If there is no package or the packaging material is broken, use some backing plates or packaging materials to protect the machine. 2) The outdoor unit shall be carried and hoisted vertically, within an inclination of less than 15 degrees.
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Page 8: Installation Of Connecting Pipe
3.6 Position and installation of outlet pipe 1) 10.5kw directly use the external stop valves to connect the pipes. 2) 14kw,16kw use the connecting pipes to get in and out through the knock-off hole of sheet metal (as shown in Fig. 3-5). Knock off the opening of sheet metal For inlet and outlet of the connecting pipe Threaded connection... - Page 9 2) Fastening nut Align the connecting pipe, tighten it by hand, and then by a wrench. Table 4-2 Tightening Torque Pipe Dimension (mm) Tightening Torque (Nm) Φ6 4 14 2 17 2 144 176 kgf cm . ～ ～ • Φ9 5 32 7 39 9 333 407 kgf cm .
- Page 10 4.2 Determination of pipe diameter Table 4-3 Diameter of connection Pipe Pipe Dimension of Main Pipe (mm) Capacity of Outdoor Unit (kW) L ＜30m L ≥30m Liquid pipe Liquid pipe Liquid pipe Liquid pipe 10.5 Φ9.52 Φ15.88 Φ9.52 Φ15.88 14/16 Φ9.52 Φ15.88 Φ9.52...
- Page 12 4.3 Remove foreign materials in the pipeline. 1) The foreign materials, which enter the refrigerant pipe during installation, shall be cleaned with high pressure nitrogen. 2) Don't connect with the indoor unit upon cleaning. 3) Use the nitrogen instead of refrigerant or flammable toxic gases like oxygen. 4.4 Air tightness test 1) After the refrigerant pipe is installed and connected to the indoor unit, and before the connecting pipes between the indoor and outdoor units are connected to the valves of the outdoor units, refill the nitrogen with the pressure of 40kgf/cm²...
- Page 13 4.5 Vacuumizing 1) The vacuum pump has the vacuum degree of less than -0.1MPa and the air displacement of more than 40L/min. 2) It is unnecessary to vacuumize the outdoor unit. Don't open the check valves at the gas side and the liquid side of the outdoor unit. 3) Make sure the vacuum pump can drop up to -0.1MPa within 2 hours;...
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Page 14: Electrical Wiring
4.8 Thermal insulation of pipe 1) Apply thermal insulation to the pipes at the gas side and the liquid side respectively; 2) Use closed-cell thermal insulation materials, with the flame retardant grade of B1 and high temperature resistance of 120℃ ; φ12.7 and thickness of φ15.88 and 3) Outer diameter of copper pipe ≤... - Page 15 NOTE · When the signal line uses a two-core shielded cable, the shielding net shall be connected to “E” of the terminal block. When the signal line uses a three-core shielded cable, the shielding net shall be connected to the ground. ·...
- Page 16 Table 5-2 10.5kw Dialing Table 5-3 14/16 kw Dialing Dialing Content Switch No. Dialing Illustration Set Value Dialing Content Switch No. Dialing Illustration Set Value ON DP O N D P Starting time 12 minutes Starting time 12 minutes Starting time setting Starting time setting ON DP O N D P...
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Page 17: Trial Run
Fault Code Fault Contents Remark Display P6 protection for 3 times within 30 minutes Display P2 protection for 3 times within 30 minutes 20-minute break at first or 2-minute break later Display P4 protection for 3 times within 100 minutes Restore when powering on Indoor units are lost for more than 3 minutes. - Page 18 When the multiple indoor units are arranged, in order to distinguish the connecting systems of indoor and outdoor units, all systems shall be named respectively and recorded on the nameplate on the electronic control box cover of the outdoor unit. 6.4 Precautions against refrigerant leak 1) The refrigerant of the air conditioner is harmless and nonflammable.
- Page 20 C-SA-ZM0 1 E N G - 1 80200019 0 1 5 5 CENTRAL AIR-CONDITIONING Guangdong CHIGO Heating & Ventilation Equipment CO., LTD Address: Chigo Industrial District, Nanhai, Foshan, Guangdong, China P C: 528244 Tel: 86 757 8836905 Fax: 86 757 88783793...