Drainage Piping Work; Electrical Work - Mitsubishi Electric MXZ-8B48NA Manual De Instalación

5. Installing the refrigerant piping
@ Freon cylinder
® Scale
® Valve
® 3-way joint
® Vacuum pump
CF) System analyzer
@ Lo-knob
® Hi-knob
_P To branch box
(_ Outdoor unit
® Stop valve
CLD L iquid pipe or high-pressure pipe
@ Gas pipe or low-pressure pipe
® Service port
Fig. 5-11
Fig. 5-12
* The figure to the left is an example only.
The stop valve shape, service port po-
sition, etc., may vary according to the
model.
* Turn section @ only.
(Do not further tighten sections @ and
® together.)
© Charge hose
@ Service port
® Evacuation (Fig. 5-11)
Evacuation should be made from the service port provided on the outdoor unit's
stop valve to the vacuum pump commonly used for both liquid or high-pressure pipe
and gas or low-pressure pipe. (Make evacuation from both liquid or high-pressure
pipe and gas or low-pressure pipe with the stop valve closed.)
Remember: Never carry out air purge by refrigerant.
/_Warning:
When installing or moving a unit to another place, do not mix anything other
than specified refrigerant into the refrigeration cycle. If air is mixed, the re-
frigeration cycle may obtain abnormally high pressure, resulting in a burst
pipe.
* A high-precision gravimeter measurable up to 0.1 kg [3.5 oz] should be used.
If you are unable to prepare such a high-precision gravimeter, you may use a
charging cylinder.
Note:
• Use a gauge manifold, changing hose, and other parts for the refrigerant
indicated on the unit.
• Use a gravimeter. (One that can measure down to 0.1 kg [3.5 oz])
Precautions when using the charge valve (Fig. 5-12)
Do not tiqhten the service port too much when installinq it, otherwise, the valve
core could be deformed and become loose causinq a qas leak.
After positioning section ® in the desired direction, turn section @ only and tighten it.
Do not further tighten sections @ and ® together after tightening section @.
6. Drainage piping work
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
ket PAC-SG61 DS-E
PAC-SG64DP-E
7. Electrical work
[1] Basic systems
OC: Outdoor unit
BC: Branch box
OC IC: Indoor unit
RC: Remote controller
A BC(5-brCnchtypeu [_ ABe (3-bra_lch type)_
OC
A B
Note:
The indoor units can be connected
to any of the 5 connectors (5-branch
type) or 3 connectors (3-branch type)
of the branch box.
BC (5-branch type)
C D
]
_ 20(3-b ra n ch type )
J J J
10