Installation manual
INSTALLATION MANUAL AND USERS GUIDE
Multi Split Series – Ductless Split System Heatpump
04006020101 © Sedna Aire Europe 25 12/2012
14. FILL WITH REFRIGERANT FOR CONNECTION PIPES
Pressure: The suction line pressure: 900 Pa (CMO18/24);1 000 Pa(CMO28)
(with indoor temperature 24°C/outdoor temperature 35°C in cooling mode)
Standard length of connecting pipes (between indoor and outdoor unit): 5m – 7,5m – 8m
CMO18/24: Add additional refrigerant only for the pipes between outdoor unit and solarpanel according to
piping diameter and table below.
CMO28/36/42: Additional refrigerant is ONLY required, when the total length of all pipings (indoor and
solarpanel) exceeds 50 m. In that case add refrigerant charge for the pipe according to its inner diameter
and the table below. Example: Total length is 65m and pipe diamter is 9,5 mm. Then additional
refrigerant charge is (65 – 50) x 22 g/m = 330g
Pipe inner diameter Additional refrigerant ( g/m)
Ø 6,3 - 1/4” or Ø 9,5 - 3/8” or Ø 12 - 1/2” 22
Ø 15,8 - 5/8” or Ø 19,0- 3/4” 50
Ø 19,0 - 3/4” or Ø 22- 7/8” 110
Ø 25,4- 1” or Ø 31,8- 1 1/4” 140
15. TEST RUN
Preparation
Do not switch on the power before all installation work is completed.
Confirm that the control line is correctly installed and all electrical lines are firmly connected.
Open the shutoff valves of the big and small connecting pipes.
Remove all foreign articles, especially metal scraps, line ends and forceps, from the unit.
Test run
Connect to the power supply, press the "ON/OFF" key on the remote controller, and the air-conditioning
unit starts to operate.
Press the Mode key, select the operating modes such as Cool, Heat, Fan, Swing mode and observe if
the operation is normal.
16. CHECK AFTER INSTALLATION
Check
ltems
Problems Owing to
Im
proper Installation
ls the installation reliable? The unit may drop, vibrate or make noises
Has the gas leakage been checked? May cause unsatisfactory
cooling
(heating) effect
ls the thermal insulation of the unit sufficient? May cause condensation and water dropping
ls the drainage smooth? May cause condensation and water dropping
Does the power supply voltage accord with the
rated voltage specified on the nameplate?
The unit may bread down or the components may
be burned out
Are the lines and pipelines correctly installed? The unit may bread down or the components may
be burned out
Has the unit been safely grounded? Risk of electrical leakage
Are the models of lines in conformity with
requirements?
The unit may bread down or the components may
be burned out
Are there any obstacles near the air inlet and
outlet of the indoor and outdoor units?
The unit may break down or the components may
be burned out
Have the length of refrigerating pipe and
refrigerant charge amount
been
recorded?
The wrong amount of refrigerant has be installed
and causes insufficient cooling and heating