Daikin VRV W T-series Operation Manual

Contents

Daikin VRV W T-series Operation Manual Manual pdf 37 page image

English 36● Check the fan speed setting on your remote controller.Refer to “Operation procedure”.● Check for open doors or windows.Shut doors and windows to prevent wind from coming in.● Check if there are too many occupants in the room during cooling operation.● Check if the heat source of the room is excessive during cooling operation.● Check if direct sunlight enters the room during cooling operation.Use curtains or blinds.● Check if the air flow angle is proper.Refer to “Operation procedure”.● Check if the entering water temperature of the outside unit is within the operation range.Do not exceed the operation range.● Check if the water flow rate of the outside unit water is within the operation range.Do not exceed the operation range.Water QualityIn order to prevent water piping from corrosion and scale, use heat source water that meets the water quality standards below.Water quality standards for chilled water, hot water and makeup water (4) (6)Item (5)Cooling water system (3) Hot water system (2) Tendency (1)Circulation systemCirculation water Makeup water Circulation water(68 to 140°F(20 to 60°C)) Makeup water Corrosion ScaleStandard itemspH (77°F(25°C)) 6.5 to 8.2 6.0 to 8.0 7.0 to 8.0 7.0 to 8.0  ElectricalConductivity(mS/ft(mS/m))(77°F(25°C))Less than 24.4(80) Less than 9.1(30) Less than 9.1(30) Less than 9.1(30)  Chloride ions(mgcl˜/L) Less than 200 Less than 50 Less than 50 Less than 50 Sulfate ions(mgSO 42- /L) Less than 200 Less than 50 Less than 50 Less than 50 Acid consumption(pH4.8) (mgCaCO 3 /L) Less than 100 Less than 50 Less than 50 Less than 50 Total hardness(mgCaCO 3 /L) Less than 200 Less than 70 Less than 70 Less than 70 Calcium hardness(mgCaCO 3 /L) Less than 150 Less than 50 Less than 50 Less than 50 Ionic-state silica(mgSiO 2 /L) Less than 50 Less than 30 Less than 30 Less than 30 Reference itemsIron (mgFe/L) Less than 1.0 Less than 0.3 Less than 1.0 Less than 0.3  Copper (mgCu/L) Less than 0.3 Less than 0.1 Less than 1.0 Less than 0.1 Sulfate ion(mgS 2- /L)Shall not bedetectedShall not bedetectedShall not bedetectedShall not bedetected Ammonium ion(mgNH4+ /L) Less than 1.0 Less than 0.1 Less than 0.3 Less than 0.1 Residual chlorine(mgCl/L) Less than 0.3 Less than 0.3 Less than 0.25 Less than 0.3 Free carbon dioxide(mgCO2 /L) Less than 4.0 Less than 4.0 Less than 0.4 Less than 4.0 Stability index 6.0 to 7.0 — — —  