Charging Procedure - Sanyo 3-WAY ECO-i SPW-C0705DZH8 Instructions D'installation

1-15. Example of Tubing Size Selection and
Refrigerant Charge Amount
Additional refrigerant charging
Based on the values in Tables 1-3, 4, 5, 6, 9-1 and 9-2, use
the liquid tubing size and length, and calculate the amount of
additional refrigerant charge using the formula below.
Required additional
refrigerant charge (kg)
(a) : Liquid tubing Total length of ø22.22 (m)
(b) : Liquid tubing Total length of ø19.05 (m)
(c) : Liquid tubing Total length of ø15.88 (m)
(d) : Liquid tubing Total length of ø12.7 (m)
(e) : Liquid tubing Total length of ø9.52 (m)
(f) : Liquid tubing Total length of ø6.35 (m)
● Charging procedure
Be sure to charge with R410A refrigerant in liquid form.
1. After performing a vacuum, charge with refrigerant from
the liquid tubing side. At this time, all valves must be in the
"fully closed" position.
2. If it was not possible to charge the designated amount,
operate the system in Cooling mode while charging with
refrigerant from the gas tubing side. (This is performed at
the time of the test run. For this, all valves must be in the
"fully open" position.)
Charge with R410A refrigerant in liquid form.
With R410A refrigerant, charge while adjusting the
amount being fed a little at a time in order to prevent liquid
refrigerant from backing up.
● After charging is completed, turn all valves to the "fully open"
position.
● Replace the tubing covers as they were before.
CAUTION
1. R410A additional charging absolutely must be done through
liquid charging.
2. The R410A refrigerant cylinder has a gray base color, and the
top part is pink.
3. The R410A refrigerant cylinder includes a siphon tube. Check
that the siphon tube is present. (This is indicated on the label at
the top of the cylinder.)
4. Due to differences in the refrigerant, pressure, and refrigerant oil
involved in installation, it is not possible in some cases to use
the same tools for R22 and for R410A.
= [366 × (a) + 259 × (b) + 185 × (c) +
128 × (d) + 56 × (e) + 26 × (f)] × 10
+ Necessary amount of additional
refrigerant charge per outdoor unit
Example:
–3
● Example of each tubing length
Main tubing
LO = 2 m LD = 15 m Outdoor side Indoor side
LA = 40 m LE = 10 m
LB = 5 m LF = 10 m
LC = 5 m
● Obtain liquid tubing size from Tables 1-3, 4, 5, 6 and 9-1.
Main tubing
LO = ø15.88 m (Total capacity of outdoor unit is 56.0 kW)
LA = ø19.05 m (Total capacity of outdoor unit is 96.0 kW)
LB = ø19.05 m (Total capacity of indoor unit is 77.9 kW)
LC = ø15.88 m (Total capacity of indoor unit is 67.3 kW)
LD = ø15.88 m (Total capacity of indoor unit is 53.3 kW)
LE = ø12.7 m (Total capacity of indoor unit is 37.3 kW)
LF = ø9.52 m (Total capacity of indoor unit is 21.3 kW)
The longest main tubing length in this example
(LM = 40 + 5 = 45 m)
17
Distribution joint tubing
A = 2 m 1 = 30 m
B = 2 m 2 = 5 m
C = 3 m 3 = 5 m
4 = 5 m
5 = 2 m
6 = 6 m
7 = 5 m