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SINCLAIR
(7) Wrap joints of indoor/outdoor units with thermal insulation materials. There must be no gap
between the joint and the wall of the indoor/outdoor unit, as shown in the following figure.
5.3.2 Thermal Insulation for Water Pipes
5.3.2.1 Thermal Insulation Materials
Use closed-cell foam thermal insulation materials with flame retardant grade of B1.
The heat conductivity is not greater than 0.035W/(m·k) when the average temperature is 0°C.
5.3.2.2 Thickness of the Thermal Insulation Layer
Thickness of the thermal insulation layer for the water pipes must be greater than 10 mm.
Bond the thermal insulation material joints with special glue and then wrap them with electrical
adhesive tape. The width of the adhesive tape must be 5 cm or greater to ensure secure connection.
6 Electric Installation
6.1 Precautions on Safety
(1) This air source water heater is class Ⅰ appliance. Ensure that wire layout is performed by
professional personnel according to national wiring rules.
(2) Ensure that a switch for all-pole disconnection is available for the fixed lines and is directly
connected to wiring terminals of the power supply. Ensure that contactor opening distance on
all poles meets the disconnection requirements under overvoltage category III conditions.
(3) Ensure that reliable grounding measures are taken. A dedicated grounding apparatus should
be used.
(4) Use the power supply with specifications provided in the nameplate, and use circuits dedicated
for air conditioners.
(5) Copper-conductor cables must be adopted for power cords, and the operating temperature
should not greater than the stipulated value. The diameter of the cables should be large
enough. For details, refer to Table 6-1. If the length of the power cord is greater than 15 meters,
choose a cord with a larger cross-sectional area to prevent problems caused overloading. Do
not pull the power cord during the installation.
(6) Use independent fixed socket for the supply. The structure of the socket must match the power
plug of the water heater and be in line with relevant national standards. The socket should be
placed in the safe position that is out of the reach of water and does not cause electric shock
hazards. It must not be placed in the bathroom, kitchen, balcony, and other wet places.
(7) Do not use the socket converter, extension cords, or wiring boards to adapt to the size of the
plug of the water heater, and do not use another plug to for the socket. The water heater should
use independent wires, and do not share a line with other appliances.
(8) If the installation conditions on site change, consider using cables whose reduced capacity can
still meet site requirements, based on the specifications of the power cords and air circuit
AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
No gap
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