Gree GRS-1.5/D150ANbA-K, Service Manual

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GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
26
No. Installation Problem Adverse Effect
12
City water is unavailable or the water
pressure is too low or too high while no
remedial measures are taken.
The unit fails to work and complaints are generated due
to unavailability of hot water.
13
The communication control cable is not
properly protected.
The communication cable is short-circuited or
disconnected and the unit fails to start due to
communication failure.
2.1.3 Collaboration During Installation
The installation process requires collaboration with aspects such as building, structure, electric, water
supply and drainage, fire control, and decoration. Layout of the piping shall not affect the automatic spray
header for fire extinguishing and should be well designed to go with the electrical device, lighting, and
indoor decoration.
2.1.3.1 Collaboration with Civil Engineering
(1) Holes, casing pipes, and installation positions for drainage standpipe must be reserved. Cable
pipes must be laid in advanced.
(2) Installation positions for the unit must be reserved and foundation must be prepared. The
installation position for the unit must meet requirements on weight bearing, ventilation, and
maintenance.
(3) If no holes are reserved, holes can be drilled when required. Hole drilling on the spandrel girder or
load bearing wall is prohibited.
2.1.3.2 Collaboration with Decoration Engineering
(1) Indoor pipes for cool water and hot wate must be laid in advance. Interfaces for cool water, hot
water, and water drainage must be reserved.
(2) Indoor hot water pipes must be provided with thermal insulation.
2.1.3.3 Collaboration with Electrical
(1) Circuits for the hot water unit must be reserved with proper power type and power use capacity.
(2) The power cable and air circuit breaker meets requirements of the air conditioning unit as well as
national safety regulations.
(3) The regional power supply should comply with national standards in terms of voltage fluctuation
and interference noise. Any incompliance found must be rectified through joint efforts.
2.2 Design Drawing Review
The installation personnel shall carefully read the design scheme and drawing provided by the design
personnel. The design intent should be completely understood and construction items should be checked
onsite. If any question exists, rational opinions should be put forward in a timely manner.