Chariot Carriers Merci Installation Manual download pdf (Page 38)

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74-EN73-EN

Air conditioner operating conditions

For proper performance, operate the air conditioner under the following temperature conditions:

If air conditioner is used outside of the above conditions, safety protection may work.

13Functions to be implemented locally

Handling existing pipe

When using the existing pipe, carefully check for the following:

 Wall thickness (within the specified range)

 Scratches and dents

 Water, oil, dirt, or dust in the pipe

 Flare looseness and leakage from welds

 Deterioration of copper pipe and heat insulator

Cautions for using existing pipe

 Do not reuse a flare nut to prevent gas leaks.

Replace it with the supplied flare nut and then process it to a flare.

 Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much

residue is discharged, wash the pipe.

 Check welds, if any, on the pipe for gas leaks.

When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.

 The pipe has been opened (disconnected from indoor unit or outdoor unit) for a long period.

 The pipe has been connected to an outdoor unit that does not use refrigerant R22, R410A or R407C.

 The existing pipe must have a wall thickness equal to or larger than th

e following thicknesses.

 Do not use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.

Cooling operation Dry bulb temp. –15 °C to 46 °C

Heating operation Wet bulb temp. –15 °C to 15 °C

Reference outside

diameter (mm)

Wall thickness (mm)

8.04.6Ø

8.05.9Ø

8.07.21Ø

0.19.51Ø

0.10.91Ø

Refrigerant recovery

When recovering the refrigerant in situations such as when relocating an indoor unit or outdoor unit, the recovery

operation can be performed by operating the SW01 and SW02 switches on the P.C. board of the outdoor unit.

A cover for the electric parts has been installed in order to provide protection from electric shocks while work is

being performed. Operate the service switches and check the LED displays with this electric parts cover in place.

Do not remove this cover while the power is still on.

DANGER

The entire P.C. board of this air conditioner system is a high-voltage area.

When operating the service switches with the power of the system left on, wear electrically insulated gloves.

 In the initial LED display status, D805 is lighted as shown on the right. If the initial status is not established (if

D805 is flashing), hold down the SW01 and SW02 service switches simultaneously for at least 5 seconds to

return the LED displays to the initial status.

LED display initial status

D800

(Yellow)

D801

(Yellow)

D802

(Yellow)

D803

(Yellow)

D804

(Yellow)

D805

(Green)

or or or or or

OFF or

Rapid

flashing

OFF or

Rapid

flashing

OFF or

Rapid

flashing

OFF or

Rapid

flashing

OFF or

Rapid

flashing

Service switches

SW01, SW02

LED displays

D800 D801 D802 D803 D804 D805

(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)

 There are four LEDs display patterns.

: ON

: OFF

: Rapid flashing (5 times/sec.)

: Slow flashing (1 time/sec.)

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Chariot Carriers Merci Installation Manual Page 38

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