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10 About the system
Installation and operation manual
36
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV system air conditioner
4P370473-1C – 2016.07
Piping diagram: RXYQ14~20
a
b
k
k
n
m
f
l
j
g
o
t
s
h
w
c
e
d
d
e
M
sv
sv
INV
INV
sv
M1C
M2C
M1F
M
M2F
(S1NPH)
(S1NPL)
(S1PH)
(S2PH)
HPS
R6T
R5T
R7T
R1T
R4T
R8T
10-12HP
R21T
R22T
R3T
HPS
r
a
Compressor (M1C)
b
Compressor (M2C)
c
Heat exchanger
d
Fan
e
Fan motor (M1F, M2F)
f
Accumulator
g
Expansion valve, main (Y1E)
h
Expansion valve, subcool heat exchanger (Y2E)
i
Expansion valve, storage vessel (Y3E)
j
Subcool heat exchanger
k
Oil separator
l
Solenoid valve, oil accumulator (Y2S)
m
Solenoid valve, oil1 (Y3S)
n
Solenoid valve, oil2 (Y4S)
o
4‑way valve, main (Y1S)
p
4‑way valve, sub (Y5S)
q
Electrical component box
r
Service port, refrigerant charge
s
Stop valve, liquid
t
Stop valve, gas
u
Stop valve, equalising gas
v
Heat accumulation element
w
Service port
For the user
10
About the system
The indoor unit part of VRV IV heat pump system can be used for
heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
NOTICE
Do not use the system for other purposes. In order to avoid
any quality deterioration, do not use the unit for cooling
precision instruments, food, plants, animals or works of art.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
10.1
System layout
Your VRV IV heat pump series outdoor unit can be one of following
models:
Model
Description
RYYQ
Single continuous heating model.
RYMQ
Multi continuous heating model.
RXYQ
Single and multi non-continuous heating
model.
Depending on the type of outdoor unit which is chosen, some
functionality will or will not exist. It will be indicated throughout this
operation manual when certain features have exclusive model rights
or not.
11
User interface
CAUTION
Never touch the internal parts of the controller.
Do not remove the front panel. Some parts inside are
dangerous to touch and appliance problems may happen.
For checking and adjusting the internal parts, contact your
dealer.
This operation manual will give a non-exhaustive overview of the
main functions of the system.
Detailed information on required actions to achieve certain functions
can be found in the dedicated installation and operation manual of
the indoor unit.
Refer to the operation manual of the installed user interface.
12
Operation
12.1
Operation range
Use the system in the following temperature and humidity ranges for
safe and effective operation.
Cooling
Heating
Outdoor temperature
–5~43°C DB
–20~21°C DB
–20~15.5°C WB
Indoor temperature
21~32°C DB
14~25°C WB
15~27°C DB
Indoor humidity
≤80%
(a)
(a)
To avoid condensation and water dripping out of the unit. If
the temperature or the humidity is beyond these conditions,
safety devices may be put in action and the air conditioner
may not operate.
Above operation range is only valid in case direct expansion indoor
units are connected to the VRV IV system.
Summary of Contents for RXYQ10T7Y1B
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