Maestro High Pressure Fan Coil Units - BTK

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Modulating valve control board (accessory) 3 points modulating valve control board A power board can be supplied as an accessory to the Maestro unit, together with a control panel to be installed on the wall. QCV 9034260 The power board is made up of an electronic control board, a power relay module for managing the fan load and a 230/24 volt power transformer, all contained in a galvanised plate case to be secured to the side of the unit. The power board can manage the correct operation of the fan and water valves. Power board The technical specifications of the electronic power board are: • Power supply – 230Vac, 50 Hz. • Management of 2- or 4-pipe systems. • Mode for setting the operating logic of the fan (continuous operation or operation when the valves are open). • Range of settings 10°C to 30°C. • Modulating valve control output with 3 positions. The actuator opening time can be set by hardware using the jumpers. • Relay output for 3 speed fan interlocked with selector switch to correctly handle the loads. • Voltage-free input contacts for connecting an occupancy or open window sensor. • Possibility to connect T1 air temperature probe (included with the control) to be installed on the return air intake. • Possibility to connect T3 low temperature cut-out probe (included with the control). In heating mode, the fan is off until the water temperature reaches 32°C. • Possibility to connect T2 Change-Over probe (optional extra) for automatic Cooling/Heating changeover in 2-pipe systems. Wall-mounted control panel (included) The control panel allows the following functions to be performed: • switch the unit on/off • set the set point • display the temperature • select the fan speed • set the operating mode The panel is wall-mounted and represents the interface with the unit. It is fitted with a room temperature probe for the room temperature control. During installation, the user can select whether to use the air temperature probe installed on the return air intake, or alternatively the probe inside the control panel. T2 Change-Over for QCV (accessory) Type Code Type Code T2 9079103 NTC sensor, if connected to the T2 contact of the board, works like a change-over; fitted in contact to the supply pipe it controls automatically the winter/summer switch in accordance to the water temperature. 28
Modulating valve control board (accessory) MaxiNet - supervisory software: The electronic board used on our QCV appliances can be included in a network of Sabiana terminal units (Futura – Slim – SkyStar) also fitted with IRC electronic boards. The entire network can then be managed and supervised from a computer running our MaxiNet software. For the units fitted with 3-point valves, the MaxiNet program can display, in addition to all the operating parameters of the individual unit, the exact position of the actuator in the water valve. Unit’s Display 1 Room name Unit name 2 T-set Set up temperature 3 T-ambient Room temperature 4 Address Address 5 Unit’s mode Fan only - Cooling - Heating - Auto 6 Fan speed Low - Medium - High - Auto Unit’s Outputs Cool Heat Fan Speed Motion Detector T2 Chilled water valve Hot water valve Off - Low - Medium - High On / Off Change-Over for 2 pipe units Electric diagrams LEGEND — = Sabiana wiring — — — = Installer wiring A = Red (low speed) B = Orange (medium speed) C = Violet (high speed) D = Yellow/Green (earth) E = Water valve E1 = Hot water valve E2 = Chilled water valve F = White (com) G = Brown (open) H = Green (closed) Q1 = 2 poles switch SEL-S = Speed switch 29
Page 1 and 2: Air Conditioning Maestro High Press
Page 3 and 4: Introduction Following many years o
Page 5 and 6: EUROVENT Certification 2 pipe units
Page 7 and 8: Air flow depending on available pre
Page 9 and 10: E.W.T. (°C) 5 6 7 8 9 10 11 12 13
Page 11 and 12: E.W.T. (°C) 5 6 7 8 9 10 11 12 13
Page 13 and 14: E.W.T. (°C) 5 6 7 8 9 10 11 12 13
Page 15 and 16: E.W.T. (°C) 5 6 7 8 9 10 11 12 13
Page 17 and 18: E.W.T. (°C) 5 6 7 8 9 10 11 12 13
Page 19 and 20: 19 E.W.T. (°C) E.A.T. (°C) E.A.T.
Page 21 and 22: DIAGRAM 1 - Correction diagram of c
Page 23 and 24: Remote electronic controls The MAES
Page 25 and 26: Remote electronic controls Type Cod
Page 27: Remote electronic controls Type Cod
Page 31 and 32: Accessories (optional) To be used o
Page 33: Electric battery accessory Electric

Maestro High Pressure Fan Coil Units - BTK

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