MRV Intelligent Network Cassette Type
Air Conditioner Indoor Unit
INSTALLATION MANUAL
No.0010570459
B
Please read this manual carefully before using.
Please keep this manual carefully and safely.
AB072FDAHA
AB092FDAHA
AB122FDAHA
AB162FDAHA
AB182FDAHA
AB242FDAHA
AB282FDAHA
AB072FDBHA
AB092FDBHA
AB122FDBHA
AB162FDBHA
AB182FDBHA
AB242FDBHA
AB282FDBHA
Contents
Safety cautions 1
Indoor unit installation 2 7
Refrigerant piping 8 9
Electrical wiring & Application control 10 14
Trial operation 15
Troubleshooting 16 17
Panel installation 18 21
Caution
Auto Restart function for C MRV models
Haier Auto Restart function when the unit power drops down suddenly, the unit
microprocessor will store the previous working condition and when the power is on again,
the unit will run as this memory
Auto Restart function is designed basically on the MRV whole system, but it is suitable
for each indoor unit individually
If some of indoor units power cut down, but the outdoor unit and the other indoor units
still work, maybe problems will happen such as freezing at cooling mode and overload
protection at heating mode on those indoor units without power
Reason
When one or some indoor units power drops down and the other indoor units are still
work, the indoor units without the power, will keep the previous working condition before
the power is off And expansion valve keeps open at a kind of opening rate condition as
the previous requirement, so there is refrigerant flowing in the exchanger, but the indoor
fan stops working If the units work at cooling mode, the indoor units without the power
will maybe make freezing If the unit works at heating mode, maybe the outdoor unit
compressor will stop because of the pressure or temperature protection This is our design
basically on Auto Restart function currently
Haier, Herewith, solemnly informs our customers, installers, distributors, etc when making
installation, please make sure when the power is shut down whether artificially or
accidentally, the whole system including outdoor unit and all the indoor units must
be off. If you do not make the installation as our indication, Haier will not be responsible
for any problem resulting from this.
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20
Safety Cautions
1
The following safety measures must be strictly followed
Keep these safety measures close at hand for timely references
After installation, trial run must be made to ensure normal operation Familiarize the user with the use
and maintenance through this manual
If the air conditioner is transferred to a new user, this manual should also be transferred
Please pay attention to the following:
Warning: Inappropriate use may lead to fatal or serious injuries
Caution: Inappropriate use may lead to bodily harm or mechanical damage; it may lead to serious
consequences in some cases
Any instructions with the sign of ì NOî shall be strictly followed, otherwise, it may cause me
chanical damage or endanger the safety of the user
Any instructions with the sign of ì STOPî shall be strictly followed, otherwise, it may cause me
chanical damage or endanger the safety of the user
Entrusted ins allation
Ins allation should be entrusted with after sale
servicemen Self installation is likely to cause
water leakage, shock and fire, etc
Ins allation should be done according to this install
ation manual Inappropriate installation may lead to
water leakage, shock and fire, etc
Connection of the earth wire
The earth wire should not be connected to gas pipes,
water pipes, lightning rods or telephone wires Poor
earth may lead to shocks
After sale servicemen shou d take measures to avoid
refrigerant eakage
Refrigerant leak may cause anox a when a certain
density is reached If the room is small, make sure o
have sound safety measures to avoid anox a acciden s
The installation of the elec ric part should be con
ducted by qualified professionals and done accord
ing to the installation manual Special return circuit
must be used Insufficient capacity return circuit and
inappropriate installation may lead to fire accidents
Installation site
The site must be firm enough to withstand the weight
of the air conditioner to prevent falling
During installation, if refrigerant leakage occurs,
ventilation measures must be taken When refrig
erant meets with fire, hazardous gas will be produced
After installation, make sure that there is no refriger
ant leakage
Refrigerant, if meeting with heaters and stoves, etc
in the room, may produce hazardous gas
Specific cables should be used for the wiring To avoid
external tension of the cables, the terminals should
be firmly fixed Inappropriate connection and fix ure
may lead to fire accidents
In order to discharge the condensed water, the
installation of the drainpipe should be done in
accordance with the manual instructions The
drainp pe should be treated for heat isolation
Inappropriate treatment may lead to water leak
age in the room
Electric leak breaker should be installed
Wi hout t, shock accidents may occur
Do not install at places where inflammable gas leak
may occur
Gas eakage may lead to fire accident
Caution
Warning
2
Indoor unit installation
19
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