Mitsubishi Electric CMY-Q100CBK User manual

1
Mitsubishi Electric Air Conditioner CITY MULTI
CMY-Q100CBK
Twinning Kit Installation Manual
•For your safety, thoroughly read the following instructions prior to installation.
Safety Precautions
•Thoroughly read the following “Safety Precautions” to ensure proper installation.
•Observe the following important safety precautions at all times.
•Hazards that can occur from incorrect handling are classified by the symbols below:
WARNING
CAUTION
Incorrect handling can result in death or serious injury.
Incorrect handling can result in bodily injury and/or structure damage.
WARNING
CAUTION
Only a dealer or qualied technician should
perform installation.
Properly install all parts according to the
instructions in the Installation Manual.
After installation, check for a refrigerant leak.
Do not make any modications or alterations.
Consult your dealer for repair.
When installing or relocating the unit, check that
no substance other than the specied refrigerant
(R410A) enters the refrigerant circuit.
Do not touch the refrigerant pipes and refrigerant
circuit components with bare hands during and
immediately after operation.
In the event of a refrigerant leak, thoroughly
ventilate the room.
•Improper installation may result in refrigerant gas leakage and
equipment damage.
•If the wrong twinning pipe or wrong size connecting pipe is used,
air conditioning performance will suffer.
•If leaked refrigerant comes in contact with a heat source, such
as a fan heater, stove, or electric grill, toxic gases will be
generated.
•Improper installation may result in water leakage, electric shock,
or re. •Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
•During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the time.
To reduce the risk of frostbites and burns, do not touch these
parts with bare hands.
•If refrigerant leaks and comes in contact with an open ame,
toxic gases will be generated.
Properly dispose of packing materials.
•Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags before
disposing of them.
* See the Installation Manual that came with the outdoor unit for installation instructions.
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c
e
d
a
b
1780
20
880 880
2. Selecting the Correct Size Refrigerant Pipes and Using the Twinning Kit
(1) Pipe size
1Field-supply the pipes to be connected to the kit.
2If the pipe was cut with a pipe cutter, remove
the burrs and eliminate foreign materials before
connecting.
* On the low-pressure side, the twinning kit connects to
the eld-supplied pipes inside the heat source unit.
The distributor on the low-pressure side must be
placed in the heat source unit that has a larger
capacity index of the two, regardless of the relative
positions of the heat source units or their addresses.
If the distributor is placed in the heat source unit that
has a smaller capacity, refrigerant will not be properly
distributed and compressor failure may result.
(If heat source units that have the same capacity are
used in combination, the distributor can be placed in
either heat source unit.)
Twinning pipe connection size
Package unit name PQRY-P144 PQRY-P168 PQRY-P192 PQRY-P216 PQRY-P240
Component unit name Heat Source unit 1 PQRY-P72 PQRY-P96 PQRY-P96 PQRY-P120 PQRY-P120
Heat Source unit 2 PQRY-P72 PQRY-P72 PQRY-P96 PQRY-P96 PQRY-P120
Twinning pipe Kit (optional parts) CMY-Q100CBK
BC controller~Twinning pipe High pressure a ø22.2 ø28.58(*)
Low pressure b ø28.58
Twinning pipe~Heat Source unit 1 High pressure c ø15.88 ø19.05
Twinning pipe~Heat Source unit 2 Low pressure d ø19.05 ø22.2
Twinning pipe~Heat Source unit 2 High pressure e ø15.88 ø19.05
* Choose the correct size pipe using the above table. Connect the eld-supplied pipe to the twinning kit for the sizes in the table that
are marked with an asterisk (*).
Heat source unit 1 Heat source unit 2
To BC controller
To BC controller
Twinning pipe (high pressure)
1. Conrming the Package Contents
The following items are included with the Twinning Kit (CMY-Q100CBK). Verify that all items are present before starting installation.
* Always use the twinning pipes included in the kit when preparing the twinning kit.
If the eld-supplied pipes do not t the parts in the kit, use the accessory piping parts listed below.
(1) Package contents
Model
1Low-pressure
twinning kit
2High-pressure
twinning pipe 3Fixing screw 4Elbow pipe
ø22.2 [7/8]
5Elbow pipe
ø28.58 [1-1/8]
6High-pressure
pipe 7Pipe cover
CMY-Q100CBK 1 1 1 1 1 1 1
Model
8OD19.05 [3/4]
-ID15.88 [5/8]
9OD22.2 [7/8]
-ID19.05 [3/4]
0OD22.2 [7/8]
-ID25.4 [1]
aInstallation
Manual
(this booklet)
bInsulation
cover c Cable tie dID22.2 [7/8]
-ID25.4 [1] eWater stopper fSealing
material
CMY-Q100CBK 1 1 1 1 1 2 1 1 1
(2) List of eld-supplied parts
· Refrigerant pipes other than the ones provided in the kit.
· Heat-resistant insulation material (for field-supplied refrigerant pipes)
· Insulation cover tape
Twinning kit (low pressure)
See reverse.
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(2) Connecting the twinning pipe kit
(1) Braze the high-pressure pipe (6) to the refrigerant
service valve.
(2) Screw down the low-pressure twinning pipe kit (1) to
the sheet metal of the refrigerant service valve with the
screws (3), and braze it to the refrigerant service valve.
(3) Braze the elbow (5) to the eld-piping rst, and then
braze it to the low-pressure twinning pipe kit (1).
(4) Braze the elbow (4) to the low-pressure pipe in the
middle.
Note
1. Exercise caution not to burn the cables while brazing the
pipes.
2. Before brazing pipes to the refrigerant service valve, place
a wet towel on the valve to keep its temperature from rising
above 120°C [248°F].
(5) Wrap the u-bend of the low-pressure twinning pipe kit (1)
with the pipe cover (7), and tie a band (c) around it to
keep it in place.
(6) Pipe connection (high-pressure side)
· Make sure the pipes from the twinning pipe to the heat source unit are sloped downwards.
· To prevent the refrigerant service valve from being damaged, do
not let its temperature rise above 120°C [248°F].
Place a wet towel on the refrigerant service valve before brazing
the pipes.
· Direct the blazing torch flame away from the adjacent cables
and sheet metal to keep them from being damaged.
CAUTION
3. Pipe Connection Example
Connect the pipes between heat source units,
referencing the gure below.
1Low-pressure
twinning kit
d
ID22.2 [7/8]
-ID25.4 [1]
2High-pressure twinning pipe
Low-pressure connecting pipe
(Between heat source units)
Main high-pressure pipe (To BC controller)
Main low-pressure pipe (To BC controller)
Wrap the pipe cover here.
(Keep out of contact with
the adjacent sheet metal.)
Field piping
(
Low-pressure connecting pipe: To BC Controller )
Field piping
(
Low-pressure connecting pipe: To heat source unit )
Field piping
(
High-pressure connecting pipe )
1
7c
3
5
4
6
· If high-pressure twinning pipe is installed above the base of the
heat source unit, it should be no more than 200 mm [7-7/8 in.].
To BC controller
High-pressure twinning pipe
To BC controller
Upward slope
Downslope
200 mm
[7-7/8 in.]
max.
To
indoor unit
High-pressure
twinning pipe
Heat source unit 2Heat source unit 1
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6. Miscellaneous Notes
Secure the eld-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as
necessary.
Install the insulation cover so that the edges of the cover meet at the top.
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See reverse.
4. Insulation Cover Installation
Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.
Insulate all refrigerant pipes. Insulate the high-pressure and low-pressure pipes separately, and pipes located inside the unit as well as
the outside. Use heat-resistant insulation material (Heat resistant : at least 120°C [248°F], Thickness: high-pressure = 10 mm [13/32
in.], low-pressure = 20 mm [13/16 in.] ). Position the edges of the insulation cover and heat-resistant insulation material so as not to
leave a gap, and then wrap the exterior perimeter of the pipe joints and middle with tape (eld-supplied).
Tape (eld-supplied)
Heat-resistant insulation material (eld-supplied)
Heat-resistant insulation material (eld-supplied)
To be gap free
To be gap free
eld-supplied pipe
eld-supplied pipe
eld-supplied pipe
bInsulation cover
2High-pressure
twinning pipe
Insulation cover Heat-resistant insulation material (eld-supplied)
Tape (eld-supplied)
Insulation covers can shrink.
Overlap the tape as shown in the
left gure so that there will be no
gap in-between the insulation cover
or eld-installed insulation material.
Overlap margin of the tape
5. Installing the water stopper
Make sure to install the supplied water stopper and sealing material when providing insulation.
The water stopper supplied with this kit is for the main low-pressure pipe. For the low-pressure pipe between heat source units, use the
water stopper and the sealing material that are supplied with the unit.
C
J
K
I
H
B
A
I
D
E
G
F
A: Position the edge of the supplied paper with mark at the edge of the pipe cover.
Then, wind the sealing material to the pipe, using the mark on the paper to properly align it.
B:Extend the eld-supplied insulation all the way to the end of the sealing material described
in step A.
C: Install the water stopper at the end face of the insulation.
D: Mark
E: Install the sealing material so that the edges of the material meet at the top.
F: Inside the unit
G: Pipe cover
H: The seam of the insulation should be at the top.
I: Sealing material
J: Install the water stopper so that the slit of the water stopper is at the top.
K: Water stopper
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