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systems, such as anti-freeze, and low-pressure protectionwill need to be readjusted.12. Before insulating water piping, check that there are noleaks.Figure 5 - Water piping connection for evaporator1. Pressure Gauge2. Flexible connector3. Flow switch4. Temperature probe5. Isolation Valve6. Pump7. FilterFigure 6 - Water piping connection for heat recovery exchangers1. Pressure Gauge2. Flexible connector3. Temperature probeWater treatmentBefore putting the unit into operation, clean the water circuit.Dirt, scales, corrosion debrits and other material canaccumulate inside the heat exchanger and reduce its heatexchanging capacity. Pressure drop can increase as well, thusreducing water flow. Proper water treatment therefore reduces4. Isolation Valve5. Pump6. Filterthe risk of corrosion, erosion, scaling, etc. The mostappropriate water treatment must be determined locally,according to the type of system and water characteristics.The manufacturer is not responsible for damage to ormalfunctioning of equipment caused by failure to treat water orby improperly treated water.Table 1 - Acceptable water quality limitspH (25°C) 6,8÷8,0 Total Hardness (mg CaCO 3 / l) < 200Electrical conductivity µS/cm (25°C)
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