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7. To facilitate the maintenance of the machine, a pressure gauge is required to be installed for the
outlet pipe of the device;
8. If the compartment controls the floor heating, and the number of the manifolds in the smallest
area is less than or equal to 2, please install the differential pressure bypass valve according to the
schematic diagram;
4.2
Water quality requirements by the machine
4.2.1 When water quality is not good, it will produce some scale and sediment such as sand.
Therefore, the water used must be filtered and softened with soft water equipment before
it flows into the heat pump water system;
4.2.2 Please analyze the water quality before using the machine, such as PH value, conductivity,
chloride ion concentration, sulfur ion concentration, etc.
PH
Water Hardness
7~8.5
<50ppm
So4
<50ppm
<30ppm
4.3
Water pipeline installation instructions
4.3.1 Install all water pipelines;
4.3.2 Check if any water leaks in the pressurized pipelines;
4.3.3 Clean the water pipelines.
4.4
Water pipeline feed-water and pipeline emptying steps:
4.4.1 Open the pressure relief valve on the water distributor and all valves;
4.4.2 Feed the water at the pipe filling port;
4.4.3 During the feed-water process, it is necessary to observe if the pressure relief valve or the
drain valve has water overflow, and if there is water overflow, it means that the water in
the system has been filled;
4.4.4 Close the pressure relief valve, and then look at the water pressure gauge. If the pressure
value is more than 0.15mpa, please close the feed-water valve and complete the water
drain.
5. Selection and Installation of Water System Accessories
5.1
Selection of circulating pump
5.1.1 The machine must be installed with a circulating pump to be used. The heat pump provides
the power port of the circulating pump (single-phase power supply). Please refer to the
circuit diagram for wiring. The maximum power of the circulating pump is not allowed to
exceed 1.5 kw.
5.1.2 Please select the circulating pump according to the actual lift required, and the flow must
be guaranteed to meet the requirements of the machine nameplate.
5.2
Selection of auxiliary electric heater
5.2.1 The user can select the auxiliary electric heater if needed; however, the machine only
provides the port connected with a signal wire to control the auxiliary electric heater.
5.2.2 Professionals must install the installation of an auxiliary electric heater.
5.3
Selection of water flow switch: the machine has a built-in flow switch, so it does not require
one more water flow switch.
Conductivity
<200vV/cm(25℃)
Si
Iron content
<0.3ppm
S
N/A
Na
N/A
38
Cl
Nh4
<500ppm
N/A
Ca<
<50ppm
V.1
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