Fixed point temperature compensator module for sanitary hot water - SLAVE
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DESCRIPTION
General features0
Slave module for multifunctional, expandable, control units with remote control EV87 and EV90
It is suitable for all types of centralized sanitary water heat regulation systems. EV91B is mostly used to regulate sanitary water temperature, but may be used for fixed point regulation of a generic ambient temperature, of a greenhouse, a swimming-pool, etc.
The device also comes with a useful thermal disinfection program to prevent legionnaires’ disease.
- Daily programming with 6 ON and OFF schedules.
- Sanitary water temperature adjustment from 0 to 100°C.
- Programming for circuit thermal disinfection against legionellosis.ù
- Parameters visualization and modification by means of FANBUS from EV90 or EV87 MAS TER.
- Local programming or via SMS messages (with GSM modem) or via remote computer (with analog PSTN modem) via the communication bus (FANBUS) and the MAS TER EV90 or EV87.
- Addressing through jumpers on the external terminal board.
- TX and RX signaling Led for connection with FANBUS, valve and circulation pump control.
Electric features- Power supply: 230Vac 50Hz.
- Consumption: 5 VA.
- 3 output relays:
– 2 for mixing valve control
– 1 for circulation pump control. - 1 communication channel FANBUS.
- 1 analog input to measure collector temperature.
- Voltage free contacts.
- NTC measurement probe type EC15 or EC16.
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ADVANTAGES
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Slave module for multifunctional, expandable, control units with remote control EV87 and EV90
It is suitable for all types of centralized sanitary water heat regulation systems. EV91B is mostly used to regulate sanitary water temperature, but may be used for fixed point regulation of a generic ambient temperature, of a greenhouse, a swimming-pool, etc.
The device also comes with a useful thermal disinfection program to prevent legionnaires’ disease.
Advantages -
TECHNICAL SPECIFICATION
CODE POWER SUPPLY CONTACTS RATING SANITARY WATER TEMPERATURE ADJUSTMENT OPERATION ADMISSIBLE TEMPERATURE PROTECTION DEGREE EV91B 230Vac 50Hz 5A - 250Vac 0 ÷ 100 °C 0 ÷ 50 °C IP40 back-panel -
HOMOLOGATION AND INSTALLATION
Homologation
- Complies with the law 373, law n.10 dated 9 of January 1991 and D.P.R.412 dated 26 of August 1993.
- Complies with EN 60730-2-9; EN 60730-2-7 standards.
Installation and use- DIN-rail mounting (6 modules).
- To ensure an adequate protection install the device on the DIN-rail within a framework.
- The removable terminals facilitate the wiring and a possible replacement.
- EV91B is an electronic device that regulates the mixing valve opening and closing based on the desired temperature and the read temperature. The device works properly only when it’s connected through a two-wire serial bus (FANBUS) to a Master device called EV90 or EV87.
- The adjustment is made using a proportional-integrator controller. Its proportional and integral constants may be modified by the user according to the type of plant and user’s habit.
- A comparison of the delivery temperature and the required reference temperature determines an error that according to the proportional band and the integration time, assigns the position of the valve. This position is expressed in percentages, where 0% indicates that the valve must take the totally closed position, and 100% indicates that it must move to the totally opened position.
- The valve takes the time shown on the valve plate to move from the fully closed to fully opened position.
- TECHNICAL LITERATURE
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FAQS
