Daikin REMQ5T7Y1B, Installation And Operation Manual

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5 Installation
Installation and operation manual
20
REYQ8~20+REMQ5T7Y1B
VRV IV system air conditioner
4P353996-1E – 2018.04
INFORMATION
▪ When a malfunction is detected during the procedure
(e.g, in case of closed stop valve), a malfunction code
will be displayed. In that case, refer to
"8.1 Solving
problems based on error codes" on page 28 and solve
the malfunction accordingly. Resetting the malfunction
can be done by pushing BS1. The procedure can be
restarted from
"5.6.6 Step 6a: To automatically charge
refrigerant" on page 19 .
▪ Aborting the automatic refrigerant charge is possible by
pushing BS1. The unit will stop and return to idle
condition.
5.6.7 Step 6b: To manually charge refrigerant
INFORMATION
The manual refrigerant charge operation will automatically
stop within 30 minutes. If charging is not completed after
30 minutes, perform the additional refrigerant charging
operation again.
INFORMATION
▪ When a malfunction is detected during the procedure
(e.g., in case of closed stop valve), a malfunction code
will be displayed. In that case, refer to
"5.6.8 Error
codes when charging refrigerant" on page 20 and
solve the malfunction accordingly. Resetting the
malfunction can be done by pushing BS3. The
procedure can be restarted from
"5.6.7 Step 6b: To
manually charge refrigerant" on page 20 .
▪ Aborting the manual refrigerant charge is possible by
pushing BS3. The unit will stop and return to idle
condition.
5.6.8 Error codes when charging refrigerant
Code Cause Solution
Unusual low pressure on
suction line Close valve A
immediately. Push BS3 to
reset. Check following
items before retrying
autocharge procedure:
▪ Check if all gas-side
stop valves are opened
correctly.
▪ Check if the valve of the
refrigerant cylinder is
opened.
▪ Check if the air inlet and
outlet of the indoor unit
are not obstructed.
Freeze-up prevention
indoor unit Close valve A
immediately. Push BS3 to
reset. Retry autocharge
procedure.
Indoor unit is out of
temperature range for leak
detection operation Retry when ambient
conditions are satisfied.
Outdoor unit is out of
temperature range for leak
detection operation Retry when ambient
conditions are satisfied.
Indicates an indoor unit
which is not compatible
with leak detection
functionality is installed
(e.g. Hydrobox units, …) Refer to requirements to
be able to execute leak
detection operation.
Code Cause Solution
Other
malfunction
code
— Close valve A
immediately. Confirm the
malfunction code and take
corresponding action,
"8.1 Solving problems
based on error codes" on
page 28
.
5.6.9 Checks after charging refrigerant
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the
refrigerant charge label?
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
5.6.10 To fix the fluorinated greenhouse gases
label
1 Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a .
b Factory refrigerant charge: see unit name plate
c Additional refrigerant amount charged
d Total refrigerant charge
e Greenhouse gas emissions of the total refrigerant charge
expressed as tonnes CO
2
equivalent
f GWP = Global warming potential
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes CO
2
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2 Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
5.7 Connecting the electrical wiring
5.7.1 Field wiring: Overview
Field wiring consists of power supply (always including earth) and
indoor-outdoor communication (= transmission) wiring.
Example: