Gree GRS-1.5/D150ANbA-K, Service Manual

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GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
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2 Preparations
2.1 Precautions for Engineering Installation
2.1.1 Safety Requirement
Caution!
All installation personnel must receive safety education and be assessed before construction is
started. Once a delinquent behavior occurs, the relevant personnel must be liable for it.
Caution!
Personal and property safety must be put first during the entire construction process. Related national
regulations on safety must be strictly followed to ensure personal and property safety.
2.1.2 Importance of Engineering Installation
The installation process of a Gree air source water heater involves installation of various parts, such
as that of the unit and water tank, water pipe or copper pipe between the unit and water tank, pipes
between the water tank and indoor cool/hot water pipes, wired controller, power cable, and control circuit.
Each installation phase must be treated with much care to ensure normal operation of the unit. Otherwise,
user requirements cannot be met and more seriously, water leakage may be caused and the indoor
decoration will be destroyed.
The following table lists problems that are inclined to occur during installation and their adverse effect.
No. Installation Problem Adverse Effect
1
Dirt or impurity enters the refrigerant
pipe of the coil unit.
The refrigerant pipe is blocked. The air conditioning
performance declines and the compressor suffers
abrasion.
Under a serious case, the unit may fail to work and the
compressor may get burned.
2
Vacuum degree of the refrigerant pipe
system of the coil unit is insufficient.
The heating effect declines. Protection is frequently
started and the unit cannot normally run. Under a serious
case, key components such as the compressor may get
damaged.
3
Moisture or water enters the refrigerant
system of the coil unit.
The compressor may be copperized, which may cause
efficiency decrease and abnormal noise. Ice may be
generated in the system and the unit fails to work.
4
The safety check valve or TP valve is
not connected with a drainage hose or
the connection is insecure.
Water leakage occurs and indoor decoration is
destroyed.
5 PPR pipes are not properly welded.
The pipe is blocked. Hot water is unavailable as
protection is started for the unit. Alternatively, the water
flow rate is too low for daily use.
6
No filter is installed for the cool water
inlet pipe.
7
The outdoor unit is installed at a
position with poor ventilation. When the ambient temperature is high, high-voltage
protection may be started and the unit stops.
8 The outdoor unit is not securely fixed. The unit is noisy during operation.
9
The outdoor unit is not connected with a
drainage pipe. Condensate water is discharged at random. Complaints
may be generated.
10
The water tank is not securely fixed or
is installed on an external wall. The water tank may topple over or drop down, which
may have severe results.
11
The pipe is not provided with thermal
insulation or thermal insulation is poor. The water temperature fails to meet user requirements
due to heat loss.