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RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09
Installation and operation manual
6
5.
Overview of unit
5.1.
Opening the unit
To gain access to the unit, front plates need to be opened as follows:
Once the front plates open, the electrical component box can be
accessed by removing the electrical component box cover as follows.
For service purposes, the push buttons on the main PCB need to be
accessed. To access these push buttons, the electrical component
box cover does not need to be opened. See
"13. Making field
settings" on page 29
.
5.2.
Main components in the unit
For all the models a piping diagram and outlook drawing are
available. Depending on the model type some components in the
main component list may not be existing in the unit.
Main components
(see
figure 1
,
figure 2
,
figure 3
,
figure 4
,
figure 5
,
figure 6
,
figure 7
,
figure 8
,
figure 9
,
figure 10
,
figure 11
,
figure 12
)
1
Compressor (M1C)
2
Compressor (M2C)
3
Heat exchanger
4
Fan
5
Fan motor (M1F, M2F)
6
Accumulator
7
Expansion valve, main (Y1E)
8
Expansion valve, subcool heat exchanger (Y2E)
9
Expansion valve, storage vessel (Y3E)
10
Subcool heat exchanger
11
Oil separator
12
Solenoid valve, oil accumulator (Y2S)
13
Solenoid valve, oil1 (Y3S)
14
Solenoid valve, oil2 (Y4S)
15
4-way valve, main (Y1S)
16
4-way valve, sub (Y5S)
17
Electrical component box
18
Service port, refrigerant charge
19
Stop valve, liquid
20
Stop valve, gas
21
Stop valve, equalizing gas
22
Heat accumulation element
5.2.1.
RYYQ* (8~12 HP)
Piping diagram
See
figure 1
.
Outlook drawing
See
figure 3
.
5.2.2.
RYYQ* (14~20 HP)
Piping diagram
See
figure 2
.
Outlook drawing
See
figure 4
.
5.2.3.
RYMQ* (8~12 HP)
Piping diagram
See
figure 5
.
Outlook drawing
See
figure 7
.
5.2.4.
Piping diagram RYMQ* (14~20 HP)
See
figure 6
.
Outlook drawing
See
figure 8
.
5.2.5.
RXYQ* (8~12 HP)
Piping diagram
See
figure 9
.
Outlook drawing
See
figure 11
.
5.2.6.
RXYQ* (14~20 HP)
Piping diagram
See
figure 10
.
Outlook drawing
See
figure 12
.
DANGER: Electrical shock
See
"2. General safety precautions" on page 2
.
DANGER: Do not touch piping and internal parts.
See
"2. General safety precautions" on page 2
.
R(X/Y)(Y/M)Q14~20
R(X/Y)(Y/M)Q8~12
10x
10x
R(X/Y)(Y/M)Q14~20
R(X/Y)(Y/M)Q8~12
2x
6x
Summary of Contents for RYYQ8T7Y1B
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