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) The certificate of quality and quality inspection report must be provided.
3) Specifications and wall thickness:
Rigid PVC pipe (PVC-U pipe): dn 32 mm x 2 mm, dn 40 mm x 2 mm, dn 50 mm x 2 mm, where dn indicates
external diameter.
2.3.2.2 Selection of Thermal Insulation Materials
(1) The quality inspection report and certificate of quality must be provided for thermal insulation
materials and products. Technical specifications and performance of these materials and products must
comply with related technical standards and design regulations.
(2) Flexible closed foam rubber and plastic materials are recommended for thermal insulation.
(3) Fire-retardant grade of the thermal insulation materials must be B1 (nonflammable) or A
(noncombustible).
(4) The heat resisting capacity of the thermal insulation materials shall not be lower than 120°C.
(5) Wall thickness of the copper pipe thermal insulation materials shall not be less than 15 mm.
(6) Wall thickness of the PPR pipe thermal insulation materials shall not be less than 10 mm.
2.3.2.3 Selection of Power Cable
A copper conductor must be adopted as the power cable, which shall comply with related conductor
standards and meet the unit’s requirement on current-carrying capacity. For details on cable diameter,
refer to section 5 of this chapter.
3 Installation of the Unit of Water Heater
3.1 Important hint
(1) The air source water heater must be installed by professional person according to national wiring
regulation and this instruction manual.
(2) Although the heat pump can operate when the ambient temperature is above -7
℃，
the water
heater can only be put indoors and must be installed at the places where the ambient temperature is
above 0
℃
. If the ambient air temperature falls lower than 0
℃
, the condensate water drainage may be
freezing.
(3) If it needs to install and move the air source water heater, please contact with Gree appointed
local maintenance center. If the air source water heater is installed by unappointed unit, Gree won’t take
the responsibilities for the malfunction and other problems due to the installation.
(4) If the users use the own prepared installation materials to install the air source water heater, Gree
won't take any responsibilities for all the loss due to leakage of pipeline, drop of unit and poor installation.
(5) The water quality for the air source water heater should comply with the local sanitation standard
for the domestic drinking water. If using the water in well, ground water or sea water, it will accelerate the
consumption of magnesium rod in water tank and shorten the service life of the unit.
(6) The water passed through the iron-exchange water softener will accelerate the consumption of
magnesium rod of water tank. Therefore, you are not suggested connecting the water softener to the
water inlet of air source water heater.