Mitsubishi Electric CITY MULTI PUMY-P NKMU Série Manuel D'installation page 8

Refrigerant for the extended piping is not included
in the outdoor unit when the unit is shipped from the
factory. Therefore, charge each refrigerant piping
system with additional refrigerant at the installation
site. In addition, in order to carry out service, enter
the size and length of each liquid pipe and additional
refrigerant charge amounts in the spaces provided on
the "Refrigerant amount" plate on the outdoor unit.
size and length of the extended piping.
procedure shown to the right, and charge with the
additional refrigerant.
lated additional refrigerant charge.
(For example, if the calculated charge is 32.92 kg,
round up the charge to 33.0 kg.)
When drain piping is necessary, use the drain socket or the drain pan (option).
Drain socket
Drain pan
1 Follow ordinance of your governmental organization for technical standard related
to electrical equipment, wiring regulations and guidance of each electric power
company.
2 Wiring for control (hereinafter referred to as transmission line) shall be (5 cm [2
noise from power source wiring. (Do not insert transmission line and power source
wire in the same conduit.)
3 Be sure to provide designated grounding work to outdoor unit.
4 Give some allowance to wiring for electrical part box of indoor and outdoor units,
because the box is sometimes removed at the time of service work.
5
connected, electrical parts will be burnt out.
6
systems are wired with the same multiplecore cable, the resultant poor transmit-
ting and receiving will cause erroneous operations.
* The figure to the left is an example
only. The stop valve shape, service port
position, etc., may vary according to the
model.
* Turn section A only.
(Do not further tighten sections A and
B together. )
C Charge hose
D Service port
Pipe size
+
Outdoor unit model number
P60
Outdoor model: P60
-
The total length of each pipe size is as follows:
Therefore, the additional charge is as follows:
P60
PAC-SG61DS-E
PAC-SH97DP-E
Refrigerant pipes are protectively wrapped
before or after connecting the pipes. Cut out the knockout in the pipe cover following
the groove and wrap the pipes.
Pipe inlet gap
main.
(If the gaps are not closed, noise may be emitted or water and dust will enter the
unit and breakdown may result.)
Do not tighten the service port too much when installing it, otherwise, the valve core
could be deformed and become loose, causing a gas leak.
After positioning section B in the desired direction, turn section A only and tighten it.
Do not further tighten sections A and B together after tightening section A.
Total capacity of
Pipe size
connected indoor units
–42
+
(m) × 0.07 (k )
43–60
61–78
Included refrigerant amount
5.1 kg (11 lbs, 4 oz)
7
for outdoor unit transmission.
(Transmission line to be connected with indoor unit : Terminal block TB3 for
transmission line, Other : Terminal block TB7 for centralized control)
Erroneous connection does not allow the system to operate.
8 In case to connect with the upper class controller or to conduct group operation in
different refrigerant systems, the control line for transmission is required between
the outdoor units each other.
Connect this control line between the terminal blocks for centralized control. (2-
wire line with no polarity)
When conducting group operation in different refrigerant systems without connect-
ing to the upper class controller, replace the insertion of the short circuit connector
9 Group is set by operating the remote controller.
Amount for the
indoor units
2.0 kg (71 oz)
2.5 kg (88 oz)
3.0 kg (106 oz)
For these piping
lengths
-