Gree GRS-Cm53/NaA-M - 2. Preparation Before Installation

Chapter Ⅱ Installation（2. Preparation Before Installation）
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Warning! During the installation and construction, personal and property safety must
be placed in the first place. During the construction, constructors must abide by the national
related safety criterion to avoid personal injury or property loss.
2.1.2 Importance of installation
Water heater adopts direct evaporative type cooling system, which has high requirement for
the cleanliness and dryness of inner pipelines of the system. When manufacturing and laying
pipelines in the construction site,
No.
Installation Problem
Existing Influence
1
Incorrect connection of PPR pipeline
and then leads to blockage
The unit enters into protection mode and does not yield hot
water; or the water flow is too small to satisfy the using
demand.
2
Cooling water inlet pipe has not been
installed with filter and then leads to
blockage
3
The installation position of outdoor unit is
in bad ventilation condition
When the ambient temperature is high, the unit is likely to arise
high-pressure protection and then close down.
4
The outdoor unit has not been fixed
There will be large noise during the operation of unit
5
Bad heat insulating condition of
pipelines or there is no heat insulation
for pipelines
There will be great loss of heat, the water temperature cannot
satisfy the using demand.
6
Water pressure of tap water is not great
enough, or water pressure of tap water
is too high that there is no corresponding
remedial measure
The unit cannot operate normally, which may cause complaint
of client.
7
Improper protection of control
communication wire
The communication wire appears short circuit or open circuit,
the unit has communication error and cannot be started up.
8
Has not well communicated with user
and has not installed return pipe.
The hot water cannot yield until long time of discharging cooling
water
2.1.3 Professional coordination
The installation of product can hardly do without the coordination with the construction,
structure, electric, water supply and drainage, fire control, decoration and related conditions.
Layout of pipeline should keep away from the fire control automatic spray header, and the
pipelines should be properly arranged according to the layout of electric, lighting, and decoration.
1）Reserve holes and sleeving;
2）Reserve installing space for main unit and water tank, prepare the basis; installation
position of main unit should satisfy the requirements for bearing, ventilation and maintenance of