Carrier 40VU0051-7E-QEE Installations- Und Bedienungsanleitung Seite 21

Installation Procedures
Refrigerant Filling Amount
Add the refrigerant according to the installation instruction of outdoor unit. The addition of R410A refrigerant must be
performed with a measure gage to ensure the specified amount while compressor failure can be caused by filling too
much or little refrigerant.
Connecting Procedures of Refrigerant Tubing
Proceed with the flare tube connecting operation to connect all the refrigerant tubes.
• Dual wrenches must be used for connecting the indoor unit tubing.
• For mounting torque, refer to the table on the right.
wrench
Cutting and enlarging
Cutting or enlarging pipes should be carried out by
installation personnel according to the operating
criterion, if the tube is too long or the flare opening is
broken.
Vacuumizing
Vacuumize from the stop valve of outdoor units with
vaccum pump. Refrigerant sealed in indoor machine
is not allowed to use for vaccumization.
Open All Valves
Open all the valves of outdoor units. [NB: oil balancing
stop valve must be shut up completely when only
connected one main Unit].
Check for Air Leakage
Check if there is any leakage at the connecting part
and bonnet with hydrophone or soapsuds.
Outer Diameter of Tub-
ing (mm)
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Connecting
1. Connecting circular terminals:
The connecting method of the circular terminal is
shown in the Fig. Remove the screw, connect it to
the terminal tier after inserting it
through the ring at the end of the
lead and then tighten it.
2. Connecting straight terminals:
The connection method for circular
terminals is shown in the Fig. Loosen the screw before
inserting the line terminal into the terminal tier, tighten the
screw and confirm that it has been clamped by pulling the
line gently.
3. Pressing connecting line:
After line connection is completed, press the
connecting line with clips that should be pressed on the
protective sleeve of the connecting line.
13
Mounting Torque (N-m)
11.8(1.2kgf-m)
24.5(2.5kgf-m)
49.0(5.0kgf-m)
78.4(8.0kgf-m)
terminal tier
pressing
clip
correct
pressing
Increase Mounting
Torque (N-m)
13.7(1.4kgf-m)
29.4(3.0kgf-m)
53.9(5.5kgf-m)
98.0(10.0kgf-m)
Connecting
circular
terminals:
wrong
pressing