Component Overview: Ryyq18~20U Units - Daikin VRV IV+ Service Manual

6 Technical data
6.4.9

Component overview: RYYQ18~20U units

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a Switchbox, for details see
page 182.
b Fan motor M1F
c Fan motor M2F
d Liquid cooling expansion valve Y3E
e Compressor (M1C) discharge thermistor R21T
f Compressor (M2C) discharge thermistor R22T
g Oil separator
h Compressor M1C + body thermistor R8T
i Compressor M2C + body thermistor R9T
j Oil return valve Y2S
k Filter
l Filter
m Charge port
n Liquid pipe thermistor, outdoor heat exchanger R4T
o Gas stop valve
p Liquid stop valve
q Service port
r Gas pipe thermistor, sub‑cool heat exchanger R6T
s Sub‑cool expansion Valve Y2E
t Main expansion valve Y1E
Service manual
180
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
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"6.5 Switchbox overview" on
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u Low pressure sensor S1NPL
v 4-way valve Y1S
w High pressure switch S2PH
x Refrigerant high pressure sensor S1NPH
y Accumulator inlet thermistor R3T
z Oil separator
aa High pressure switch S1PH
ab Liquid pipe thermistor, sub‑cool heat exchanger R5T
ac Filter
ad Accumulator
ae Heat exchanger
af De‑icer thermistor, outdoor heat exchanger R7T
ag Filter
ah Oil return valve Y3S
ai Filter
aj Oil return valve Y4S
ak 4‑way valve Y5S
al Heat storage vessel
am Storage vessel expansion valve Y4E
z aa g
h al
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
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