Panasonic U-8MF1E8 Installation Instructions Manual page 11

3WAY_ECO-i_inst_eng_Book.indb 15
CZ-P160HR2
Part
Types and specifi cations of tubing connections
number
1
Gas tube: ø15.88
2
Liquid tube: ø9.52
3
Suspension hook
4
Liquid tube: ø9.52
5
Suction tube: ø15.88
6
Discharge tube: ø12.7
7
Earth (M5 with washer)
8
Service panel
Power outlet (connected to a 5 m cabtyre cable with
9
connector)
21 76
51 44
37 38 27
17
28 166
11
149
240
• Specifications
CZ-P160HR2
5.6 < Total capacity of indoor units (kW) ≤ 16.0
Compatibility
Power source Single-phase 200V 50/60Hz (supplied by indoor units)
Power input 25 W
Net weight 4.7 kg
Washer × 2
Accessories Insulating tape
PCB connector × 1
Cool with damp cloth or other means when
brazing the joint with a torch. Otherwise, the
Gas tube
solenoid valve will be damaged.
Liquid tube
Suction tube
Unit: mm
N OTE
Notes on Installation
• Be sure to secure the valve body by using its structure with
the suspension bolt, etc.
• Install the valve body within a distance of 30 m from the
indoor unit.
Some refrigerant noise will be produced. Therefore in
hospitals, libraries, hotel guest rooms, and other quiet
locations, it is recommended that the solenoid valve kit be
installed on the ceiling reverse side of a hallway or another
location separated from the room.
• When installing the valve body, install with the top surface
facing up. Secure 200 mm or more of space to the front so
that the front service panel can be removed.
• If the supplied suspension hook will not be used, and other
fastening devices will be attached in the field, use the 4 screw
holes on the top surface. DO NOT use any long screws other
than the supplied screws. Use of other screws may puncture
the internal tubing, resulting in refrigerant leakage.
• Do not block the air holes.
Suspension bolt (M10 or 3/8" ) (field supply)
Nut (field supply)
Washer
(M10 or 3/8"
Suspension hook
Unit: mm
How to use suspension hook
Front side
Service space
17
SUPPLEMENT
2011/02/16 14:55:43 3WAY_ECO-i_inst_eng_Book.indb 16
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)
Discharge
tube
(a) : Liquid tubing
(b) : Liquid tubing
Liquid tube
(c) : Liquid tubing
(d) : Liquid tubing
(e) : Liquid tubing
(f) : Liquid tubing
● 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.
M4 screws (12 pcs.)
Example:
= [366 × (a) + 259 × (b) + 185 × (c) +
128 × (d) + 56 × (e) + 26 × (f)] × 10 –3
+ Necessary amount of additional
refrigerant charge per outdoor unit
Total length of ø22.22 (m)
Total length of ø19.05 (m)
Total length of ø15.88 (m)
Total length of ø12.7 (m)
Total length of ø9.52 (m)
Total length of ø6.35 (m)
● 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)
18
2011/02/16 14:55:43
Distribution joint tubing
A = 2 m 1 = 30 m 5 = 2 m
B = 2 m 2 = 5 m 6 = 6 m
C = 3 m 3 = 5 m 7 = 5 m
4 = 5 m