Robur GAHP Line AR Series, Инструкция по установке, эксплуатации и обслуживанию

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Plumbing installer section
Ed. 2014-08
33
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When rigid pipes are used, to prevent the transmission of vibrations, it is
recommended that the appliance water inlet and outlet are connected with vibration
dampings (see examples in Figure 11 and Figure 12, on page 35 and 36).
The components described below, to be provided near the appliance, are shown in the
example hydraulic plant diagrams in Figure 11 and Figure 12, on page 35 and 36.
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ANTIVIBRATION JOINTS in line with the water and gas connections of the appliance.
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MANOMETERS installed in the inlet and outlet water pipes.
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INLET FLOW CALIBRATION VALVE, either of the gate valve or the over centre valve
type, installed in the water inlet pipe of the appliance.
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WATER FILTER installed in the appliance water inlet pipe with a mesh of minimum 0.7
mm, maximum 1 mm.
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ISOLATION BALL VALVE in the water and gas pipes of the plant.
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RETAINING VALVE (for plants with several appliances see Figure 12, on page 36)
installed in the water inlet pipe of each appliance (primary side).
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507 PSIg SAFETY RELIEF VALVE installed in the appliance outlet water pipe (for
plants with a single appliance – see Figure 11 on page 35).
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PLANT EXPANSION TANK (for plants with a single appliance see Figure 11 on page
35) installed in the appliance inlet water pipe.
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EXPANSION TANK for individual appliance (for plants with several appliances, see
Figure 12, on page 36) installed in the appliance water outlet pipe (primary side).
Provide a plant expansion tank in any case (secondary side), installed in the appliance
water outlet pipe.
The appliance is not equipped with an expansion tank: therefore it is necessary to
install a suitable expansion tank, sized in relation to the maximum heat excursion
and maximum operating pressure of the water in the plant (see figures mentioned
above for reference).
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PLANT WATER CIRCULATION PUMP (for plants with a single appliance – see Figure
11 on page 35), located on the water inlet pipe of the appliance, flowing towards the
appliance, and selected with characteristics that satisfy the requirements of the plant.
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WATER CIRCULATION PUMP for single appliance (for plants with several appliances
see Figure 12, on page 36), located on the appliance water inlet pipe (primary side),
flowing towards the appliance, and selected with characteristics that satisfy the
requirements of the plant.
Provide in any case a plant water circulation pump (secondary side), flowing towards
the plant and chosen with characteristics that meet the plant's requirements.
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4-CONNECTION COLD WATER STORAGE TANK with anti-mixing separators (for
plants with several appliances, see Figure 12, on page 36), having the function of
hydraulic separator (configuration of primary, variable-flow circuit), complete with 45
PSIg safety valve, air bleeder valve and drain tap.
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PLANT FILLING SYSTEM: if automatic filling systems are used, a seasonal check of
the percentage of monoethylene glycol in the plant is recommended.