Refrigerant Piping Connection; Electrical Work - Zibro SM 13 Installationshandbuch

Drain joint
Seal

REFRIGERANT PIPING CONNECTION

• Align the centre of the pipes.
• Sufficiently tighten the flare nut with fingers, and then tighten it with a spanner and torque wrench
as shown (see fig. 18 and fig. 19).
• Select the correct tightening torque (shown table 1) in order to prevent the pipes, connecting pieces
and nuts from being damaged.
Indoor unit tubing
ATTENTION
• Excessive torque can break nut depending on installation conditions.
• All refrigerant work and refrigerant piping should comply with the local legislation, standards
and codes and should only be done by qualified and skilled engineers.
Outer Tightening torque
diam. (N.cm)
Ø 6.35
(160kgf.cm)
Ø 9.53
(300kgf.cm)
Ø 12.7
(500kgf.cm).
Table 1: tightening torque

ELECTRICAL WORK

Electric safety regulations for the initial Installation
1. In case of an unsafe (electrical, mechanical and/or refrigerant etc) situation do not install the aircon-
ditioner.
2. Power voltage supplied should be in the range of 95%~105% of rated voltage on rating table.
3. A creepage protector and a main power switch with a 1.5 times capacity of max. current of the unit
should be installed in power circuit.
4. Ensure the air conditioner is grounded well.
5. Connect the wires according the attached electrical connection diagram located on the panel of the
outdoor unit.
4
60
Base pan hole of
outdoor unit
Seal
Drain pipe
Fig. 13
Fig.17
Flare nut Pipings
Fig. 18
Additional tightening
torque (N.cm)
1570 1960
(200kgf.cm)
2940 3430
(350kgf.cm)
4900 5390
(550kgf.cm)
Fig. 19