Vivax HPM-28CH84AERIs R32-1H3 handleiding

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Handleiding

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Water connections must be made correctly in accordance with the labels on the outdoor unit, with respect to the water

inlet and water outlet. If air, moisture or dust gets in the water circuit, problems may occur. Therefore, always take into

account the following when connecting the water circuit:

Use clean pipes only.

Hold the pipe end downwards when removing burrs

Cover the pipe end when inserting it through a wall to prevent dust and dirt entering.

Use a good thread sealant for sealing the connections. The sealing must be able to withstand the pressures and

temperatures of the system.

When using non-copper metallic piping, be sure to insulate the two kind of materials from each other to prevent

galvanic corrosion.

For copper is a soft material, use appropriate tools for connecting the water circuit. Inappropriate tools will cause

damage to the pipes

3.4 Water Circuit Anti-freeze Protection

Ice formation can cause damage to the hydronic system. All internal hydronic parts are insulated to reduce heat loss.

Insulation must also be added to the field piping.

The software contains special functions using the heat pump to protect the entire system against freezing.

When the temperature of the water flow in the system drops to a certain value, the unit will heat the water, either

using the heat pump, or the backup heater. The freeze protection function will turn off only when the temperature

increases to a certain value.

In event of a power failure, the above features would not protect the unit from freezing.

Since a power failure could happen when the unit is unattended, the supplier recommends use anti-freeze fluid to

the water system.

Depending on the expected lowest outdoor temperature, make sure the water system is filled with a concentration

of glycol as mentioned in the table below. When glycol is added to the system, the freezing point of water will be

lower and the performance of the unit will be affected. The correction factor of the unit capacity, flow rate and

pressure drop of the system is listed in the table 3-3.1 and 3-3.2.

Table 3-3.1: Ethylene Glycol(Toxic)

Concentration

of ethylene

glycol (%)

Modification coefficient

Minimum outdoor

temperature(°C)

Cooling capacity

modification

Power input

modification

Water resistance

Water flow

modification

1.000

0.984

0.998

1.118

1.019

-5

0.973

0.995

1.268

1.051

-15

0.965

0.992

1.482

1.092

-25

Table 3-3.2: Propylene Glycol(Low Toxic; Including the necessary inhibitors, classified as Category III according to EN1717)

Concentration

of propylene

glycol (%)

Modification coefficient

Minimum outdoor

temperature(°C)

Cooling capacity

modification

Power input

modification

Water resistance

Water flow

modification

1.000

0.976

0.996

1.071

1.000

-4

0.961

0.992

1.189

1.016

-12

0.948

0.988

1.380

1.034

-20

Glycol absorbs water from its environment. Therefore do NOT add glycol that has been exposed to air. Leaving the cap off

the glycol container causes the concentration of water to increase. The glycol concentration is then lower than assumed.

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