Refrigerant Pipe Connection - mundoclima H6M Series Installation And Owner's Manual

4. Refrigerant pipe connection

Before installing, make sure that the height difference, the length of refrigerant pipe and number of bends
between indoor and outdoor units, meet the following specifications.
UNIT
Max. Length for all rooms (m)
Max. Leng th for one indoor unit (m)
OU higher than IU
Max. height different between
indoor and outdoor unit (m)
OU lower than IU
Max. height different between indoor units (m)
Additional charge (R410A)
UNIT
2 x 1 (H6.2)
15m
Charged until
(Total Liquid Length 1/4")
Total Liquid Length 1/4":
Additional
charge
15 x (Total length - 15)
(g)
1. Flaring work
Main cause for refrigerant leakage
is due to defect in the flaring work.
Carry out correct flaring work
using the following procedure:
A: Cut the pipes and the cable.
1. Use the piping kit accessory or pipes
purchased locally.
2. Measure the distance between the indoor
and the outdoor unit.
3. Cut the pipes a little longer than the
measured distance.
4. Cut the cable 1.5m longer than the pipe
length.
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
C: Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.(not possible
to put them on after flaring work)
REFRIGERANT PIPE CONNECTION
2 x 1 (H6.2) 3 x 1 (H6.3) 4 x 1 (H6.4)
30 45 60
25 30 35
15 15 15
15 15 15
10 10 10
3 x 1 (H6.3)
22,5m
(Total Liquid Length 1/4")
Total Liquid Length 1/4":
15 x (Total length - 22,5)
8
Outdoor unit
5 x 1 (H6.5)
75
35
15
15
10
4 x 1 (H6.4)
30m (Total Liquid Length 1/4")
7,5m (Total Liquid Length 3/8")
Total Liquid Length 1/4":
15 x (Total length - 30)
Total Liquid Length 3/8":
30 x (total length - 7,5)
。
90
Oblique
Fig.54
Pipe
Point down
Fig.55
Flare nut
Copper tube
Indoor unit
Max. height difference
Indoor unit
15m
10m
15m
Indoor unit
5 x 1 (H6.5)
37,5m (Total Liquid Length 1/4")
7,5m (Total Liquid Length 3/8")
Total Liquid Length 1/4":
15 x (Total length - 37,5)
Roughness Burr
Reamer
Fig.56