DAB Evoplus Small Series, Инструкция по установке и обслуживанию

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ENGLISH
GB
10
Never insulate the electronic control device.
5.2 Rotation of the Motor Heads
If the circulator is installed on pipes in a horizontal position, it will be necessary to rotate
the motor with the respective electronic device through 90 degrees in order to maintain
the grade of IP protection and to allow the user a more convenient interaction with the
graphic interface (see Figure 2).
B efore rotating the circulator, ensure that it has been completely drained.
To rotate the EVOPLUS SMALL circulator, proceed as follows:
1. Remove the 4 fixing screws of the circulator head.
2. Rotate the motor casing with the electronic control device through 90 degrees
clockwise or counterclockwise, as necessary.
3. Reassemble and tighten the 4 screws that fix the circulator head.
T he electronic control device must always remain in vertical position!
5.3 Non-return valve
If the system is equipped with a non-return valve, ensure that the minimum pressure of
the circulator is always higher than the valve closing pressure.
6. ELECTRICAL CONNECTIONS
T he electrical connections must be made by expert, qualified personnel.
-
The circulator does not require any external motor protection.
- Ensure that the supply voltage and frequency are the same as the values indicated on
the electrical data plate of the circulator.
6.1 Power supply connection
After having wired the power supply cable as shown in Figure 3, connect it to the board
as shown in Figure 4.
Before supplying power to the circulator, ensure that the cover of the EVOPLUS
SMALL control panel is perfectly closed!
7. START
All the starting operations must be performed with the cover of the EV -
OPLUS SMALL control panel closed!
Start the system only when all the electrical and hydraulic connections
have been completed.
Avoid running the circulator when there is no water in the system.
As well as being at a high temperature and pressure, the fluid in the
system may also be in the form of steam. DANGER OF SCALDING!
It is dangerous to touch the circulator. DANGER OF SCALDING!
Once all the electrical and hydraulic connections have been made, fill the system with
water and if necessary with glycol (for the maximum glycol percentage see par. 2) and
feed the system.
Once the system has been started it is possible to modify the operating modes to adapt
better to the plant requirements (see par.10).
8. FUNCTIONS
8.1 Regulating Modes
EVOPLUS SMALL circulators allow the following regulating modes depending on plant
requirements:
-
Proportional differential pressure regulation depending on the flow present in the
plant.
-
Constant differential pressure regulation.
- Regulation with constant curve.
The regulating mode may be set through the EVOPLUS SMALL control panel (see par. 10).
8.1.1 Regulation with Proportional Differential Pressure
In this regulating mode the differential pressure is reduced or in-
creased as the demand for water decreases or increases.
The Hs set point may be set from the display.
Regulation indicated for:
- Heating and conditioning plants with high load losses.
- Two-pipe systems with thermostatic valves and head ≥ 4 m.
-
Plants with secondary differential pressure regulator.
- Primary circuits with high load losses.
-
Domestic water recirculating systems with thermostatic valves on the rising
columns.