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11
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
Measure the existing pipe thickness and
check for damage.
-
tions and the pipes are not damaged.
Check if the existing air conditioner can operate.
After operating the cooling system for about 30
minutes, do a pump down work.
Disconnect the existing air conditioner from the
pipes.
Attach the new air conditioner
Test run
* Refer to 7.2.
The existing pipes cannot be reused.
Use new pipes.
* If the existing air conditioner cannot operate, use a
refrigerant recovery device to collect the refrigerant.
* In case existing pipes were used for gas or oil
heat pump systems, be sure to clean the pipes for
ZM200, 250/M200, 250 models.
ZM200, 250/M200, 250
Drain socket
PAC-SG61DS-E
Drain pan
PAC-SH97DP-E
When drain piping is necessary, use the drain socket or the drain pan (option).
• When this unit is used as a FREE COMPO MULTI unit, install the refrigerant
piping with the restrictions indicated in the drawing on the left. In addition, if the
restrictions are going to be exceeded, or if there are going to be combinations of
indoor and outdoor units, refer to installation instructions for the indoor unit for
details about the installation.
Outdoor unit
Permissible total
piping length
A+B+C+D+E
A+B or A+C or
A+D or A+E
Charge-less piping
length
A+B+C+D+E
ZM200
ZM250
100 m and less
100 m and less
30 m and less
M200
M250
70 m and less
70 m and less
30 m and less
Outdoor unit
| B-C | or | B-D | or
| B-E | or | C-D | or
| C-E | or | D-E |
No. of bends
ZM200, 250
8 m and less
Within 15
Indoor unit
Outdoor unit
Multi distribution pipe (option)
Height difference (Indoor unit -
Outdoor unit) Max. 30 m
Height difference (Indoor unit -
Indoor unit) Max. 1 m
A: Main piping
B, C, D, E: Branch piping
ZM200, 250 : A+B+C(+D)(+E) 100 m
M200, 250
: A+B+C(+D)(+E) 70 m
* “D” is for triple.
* “E” is for four (quadruple).
