7
ENGLISH
9
1.
GENERAL
This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instruct
ions for the
outdoor unit and make sure all accessory parts listed are with the system before beginning.
For the renewal installation, refer to the Technical Data.
1-1.
Tools Required for Installation (not supplied)
1. Flathead
screwdriver
2.
Phillips head screwdriver
3.
Knife or wire stripper
4. Tape
measure
5. Carpenter’s
level
6.
Sabre saw or keyhole saw
7. Hacksaw
8. Core
bits
9. Hammer
10. Drill
11. Tube
cutter
12.
Tube flaring tool
13. Torque
wrench
14. Adjustable
wrench
15.
Reamer (for deburring)
16.
Hexagonal wrench (4 mm and 5 mm)
17. Pliers
18. Cutting
pliers
1-2.
Accessories Supplied with Outdoor Unit
Table 1 : Outdoor Unit
Part Name
Figure
Q’ty
8 HP
10 HP
Joint tube A
(See page 31.)
01
Joint tube B
(See page 31.)
01
Protection
bushing
(See page 23.)
22
Operating
Instructions
11
Installation
Instructions
11
1-3.
Type of Copper Tube and Insulation Material
If you wish to purchase these materials separately from a local
source, you will need:
1.
Deoxidized annealed copper tube for refrigerant tubing.
2.
Foamed polyethylene insulation for copper tubes as
required to precise length of tubing. See the section
“5-3. Insulating the Refrigerant Tubing” for details.
3.
Use insulated copper wire for field wiring. Wire size varies
with the total length of wiring.
See the section
“4
. ELECTRICAL
WIRING
”
for details.
CAUTION
Check local electrical codes and
regulations before obtaining wire. Also,
check any specified instructions or
limitations.
1-4.
Additional Materials Required for Installation
1.
Refrigeration (armored) tape
2.
Insulated staples or clamps for connecting wire
(See your local codes.)
3. Putty
4.
Refrigeration tubing lubricant
5.
Clamps or saddles to secure refrigerant tubing
6.
Scale for weighing
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1-5. Tubing
Length
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the
figure below.
1.
Main tubing length (maximum tubing size) LM = LA + LB …
2.
Main distribution tubes LC – LH are selected according to the capacity after the distribution joint.
3.
Sizes of indoor unit connection tubing
1 –
15 are determined by the connection tubing sizes on the indoor units.
Table 2 : Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Unit: m
Item
Mark
Contents
Length
Allowable tubing
length
L1
Max. tubing length
Actual length
150*
1
Equivalent length
175*
1
¨
L (L2 – L4)
Difference between max. length and min.
length from the 1st distribution joint
50*
3
LM
Max. length of main tubing (at maximum size)
*
Even after 1st distribution joint, LM is allowed if at maximum tubing length.
-
*
2
1,
2~
15
Max. length of each distribution tube
50*
4
L1 +
1 +
2~
14
+ LF + LG + LH
Total max. tubing length including length of each distribution
tube (only liquid tubing)
300
Allowable elevation
difference
H1
When outdoor unit is installed higher than indoor unit
50
When outdoor unit is installed lower than indoor unit
40
H2
Max. difference between indoor units
15
Allowable length of
joint tubing
L3
T-joint tubing (
¿
eld-supply); Max. tubing length between the
¿
rst T-joint and solidly welded-shut end point
2
L = Length H = Height
NOTE
0:
In case that the total value of connected indoor units exceeds 1.200, increase the size of the main tube (LM) by 1 rank for
liquid
tube. (Table 2-3)
How to calculate total value of indoor units:
Select the value in Table 2-2 from the type and capacity of connected indoor units.
Then, calculate the total value for the connected indoor units.
*1:
If the longest tubing length (L1) exceeds 90 m (equivalent length), increase the sizes of the main tubes (LM) by 1 rank for
gas tubes
and liquid tubes. Use a field supply reducer. Select the tube size from the table of main tubing sizes (Table 3) and from the t
able of
refrigerant tubing sizes (Table 7).
*2:
If the longest main tubing length (LM) exceeds 50 m, increase the main tubing size at the portion before 50 m by 1 rank for
the gas
tubes. Use a field supply reducer. Determine the length less than the limitation of allowable maximum tubing length.
For the portion that exceeds 50 m, set based on the main tubing size (LA) listed in Table 3.
*3:
When the tubing length exceeds 40 m, increase a longer liquid or gas tubing by 1 rank.
Refer to the Technical Data for the details.
*4:
If any of the tubing length exceeds 30m, increase the size of the liquid and gas tubes by 1 rank.
5:
If the size of the existing tubing is already larger than the standard tubing size, it is not necessary to further increase
the size.
*
If the total amount of refrigerant for the system exceeds 24
kg
, change the size of the tubing to reduce the amount of refrigerant.
Explanation of symbols
R410A distribution joint
CZ-P160BK2
CZ-P680BK2
* Be sure to use special R410A distribution joints (CZ: optional parts) for tubing branches.
LA
LF
LM
LB
LC
L2
L4
LG
3L
LD
LH
H2
H1
L1
2
3
1
5
4
13
14
15
1st distribution joint
Max. 40cm
For extension
For extension
Max. 40cm
Distribution joint
(CZ: optional parts)
Ball valve (field supply)
T-joint (field supply)
Solidly welded shut
(pinch weld)
NOTE
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