Refrigerant Pipe; Air Evacuation; Leakage Test; Wiring - Carrier 42QHC009DS Installationsanleitung

4. REFRIGERANT PIPING WORK

4.3 REFRIGERANT PIPE

Minimum length
to reduce abnormal Chargeless length
vibration & noise
R410A*
3m 5m
* Please use tools for R410A system.
NOTE
Extended pipe length will affect the capacity and energy efficiency of the unit.
The nominal efficiency is tested based on the pipe length of 5 meter.
When the pipe length is over 5m, the additional refrigerant should be added according to the pipe length.
The max. pipe length is recommended as below.
Models
Max. pipe length(m)
QHC009/QHC012 25
30
QHC018
40
QHC024
* Please use tools for R410A system.

4.4 AIR EVACUATION

Connect the charge hose from the manifold gauge to the service port of the gas side packed valve.
Connect the charge hose to the port of the vacuum pump.
Fully open the handle Lo of manifold gauge.
Operate the vacuum pump to evacuate air from the system until -76cmHg.
Close the handle Lo of manifold gauge.
Fully open the valve stem of the packed valves.
Remove the charging hose form the service port.
Securely tighten caps of packed valve.
Compound gauge
-76 cmHg
Handle Lo
Charge hose

4.5 LEAKAGE TEST

After the piping work is finished, make sure to check the connection part of each refrigerant pipe and confirm that there is no gas leak by
applying soapy water to them or by using a leak detector specific for HFC refrigerants. Refer below picture for illustration.
Check-point of indoor unit
Check-point of outdoor unit
A: Low pressure stop valve
C& D: Indoor unit flare nuts
11
Additional charge per meter
Liquid side:φ6.35mm Liquid side:φ9.52mm
15g 30g
R410A Inverter
Max. height difference(m)
10
20
20
Manifold valve
Pressure meter
Handle Hi
Charge hose
Vacuum pump
Packed valve
D
B C
A
B: High pressure stop valve

5. WIRING

CAUTION
All the electrical connections must be carried out by qualified installers and all the wirings must be
connected according to the wiring diagram.
Make ground connection prior to any other electrical connections.
All power sources must be turned off before wiring work and do not turn on the power until you have made
sure all the wirings have been safety checked.
A main switch and circuit breaker or fuse must be installed, the capacity should be above 1.5 times of
maximum current in circuit.
An individual branch circuit and single socket used only for this appliance must be available.
Wire cross section is depending on the rated current and national, state and local electrical wiring code.
Consult local building codes and National electrical code for special requirement.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
The unit must be connected to the main power supply by means of a circuit breaker or a switch with a
contact separation of at least 3mm in all poles. Installation of a residual current device (RCD) having a rated
residual operating current not exceeding 30mA is advisable.
This appliance incorporates an earth connection for functional purposes only.
Model Rated Current(A)
38QHC009/38QHC012 10.0
38QHC018 12.5
18.0
38QHC024
NOTICE:
1. All power wires must be sized in according with national,state and local electrical wiring code. Consult local building codes and National Electrical Code for special
requirements.
2. The outdoor power cord and interconnecting cable type should be H07RN-F.
3. The rated current of appliance is indicated on the nameplate.
Power input cord
60mm
GND
10mm 40mm
Model Indoor Unit
W 1 2 3
QHC009
QHC012
QHC018
To outdoor
W 1 2 3
QHC24
To outdoor
Connective Cable
Power input cord
Fuse Rating(A)
(with Min. Crosse section) (with Min. Crosse section)
16 3*1.5mm 5*1.5mm
5*1.5mm
20 3*1.5mm
5*2.5mm
30 3*2.5mm
Connective Cable
60mm
GND
10mm 40mm
Outdoor Unit
W 1 2 3 L N
Power Input
To Indoor
W 1 2 3 L N
To Indoor Power Input
12