Mitsubishi Heavy Industries FDCR224KXE6 User Manual

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19
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'11 • KX-T-166
6 APPLICATION DATA
6.1 Cautions for reuse of existing pipes
①
Procedure of installation work for reuse of existing pipes
Check & consideration
Conrmation of reusability of
existing power supply equipment
Conrmation of reusability of
existing control wires
Conrmation of reusability of
existing refrigerant pipes
Conrmation of the scope of
replacement
Before installation work at site
◦
Please note that we cannot warrant the reliability (improper properties owing to
deterioration, etc.) of refrigerant pipes, control wires, electric equipment, etc., for
reuse.
◦
Check existing refrigerant pipes for reusability according to “
②
Flowchart of the
conrmation of reusability of existing pipes”.
◦
Regarding restrictions on the refrigerant pipe length, applicable pipe diameter, etc.,
refer to the product catalogs and manuals.
◦
When reusing existing control wires between outdoor units, indoor units and re
-
mote controller, check them according to “
③
Check and consideration for reuse of
existing wires and power supply equipment”.
◦
Power supply equipment must use the voltage and number of phases adequate for
outdoor units and indoor units and have the circuit breaker capacity and wire diam-
eters as specied on the power supply wiring diagram.
◦
When reusing existing power supply equipment (including power supply wiring),
extent of deterioration of and damages on the equipment must be checked.
◦
When wires or power supply equipment are aged, sufcient care must be taken to
prevent risk of re or earth leakage.
Recovery of old refrigerant and
removal of existing outdoor unit,
indoor unit, remote controller, etc.
Installation of outdoor unit, in-
door unit, remote controller, etc.,
and electrical work <Installation
of service valve kit is necessary.>
Airtight test of pipes
Installation of outdoor unit, indoor
unit, remote controller, etc., and elec-
trical work <Installation of service
valve kit is not necessary.>
Recovery of old refrigerant and re-
moval of existing outdoor unit, indoor
unit, remote controller, etc.
Connection of pipe re-fresh kit
Test run & adjustment
Additional refrigerant charge
System check after the address setting
Vacuumizing of pipes
Existing unit operability
Operable
Not operable
Pipe washing method by cooling
operation of existing unit
Pipe washing method
by re-fresh kit
Airtight test of pipes
Installation work at site
Vacuumizing of pipes
System check after the ad-
dress setting
Additional refrigerant charge
Pipe washing operation using re-fresh kit
Removal of pipe re-fresh kit
Check & consideration
・
If refrigerant cannot be recovered completely with
the pump-down, recover remaining refrigerant using
the refrigerant recovery unit.
・
If the existing unit is not operable, install the ser-
vice valve kit. Make sure to secure a space to install
the re-fresh kit in front of the service valve kit. (500
mm or more in front of the kit)
・
When implementing the pipe washing operation
using the re-fresh kit, consult our dealer.
・
Test the air tightness at 3.24 MPa.
・
Turn the power supply on after the address setting.
Conrm that the system operates properly and that
there is no error display on the remote controller or
indoor unit.
Implementation of pump-down operation after
cooling operation with old system for more than 30
minutes (Existing unit cooling washing operation)

Mitsubishi Heavy Industries FDCR224KXE6 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDCR224KXE6
Category	Heat Pump
Language	English