FläktGroup EURV Installation guide

Brand: FläktGroup

Model: EURV

Type: Installation guide

Fläkt Woods 3197 GB 03.01 1 Specifications are subject to alteration without notice

EU Air Handling Unit INSTALLATION

EURV liquid coupled heat exchangers

Condition on delivery

The heat exchanger is filled at the factory with the heat

transfer medium and is provided with plugged connec-

tions for venting, filling and drainage. The heat transfer

medium consists of water with 30% ethylene glycol addi-

tive to serve as an anti-freeze agent.

Description

The pipework of pressure vessel-rated design is connected

across flat gaskets directly to the heat exchangers. The

pipework package is insulated with 10 mm thick

ARMAFLEX insulation to prevent frosting.

The three-way valve with actuator provides max. effici-

ency and prevents frost from forming on the heat

exchanger for exhaust air.

A flow adjustment valve with measurement connec-

tions is installed for adjusting the duty point of the pump

to the correct flow setting depending on the flow range

selected.

The anti-freeze controller is incorporated in the anti-

freeze sensor. The controller emits a 0–10 V input signal

to the valve actuator. 24 V ac power must be supplied to

the actuator and the anti-freeze controller. The trans-

former is not included. Two shut-off valves are fitted, one

before the suction side and the other after the delivery

side of the pump.

The temperature of the heat transfer medium must be

regulated by an external controller (0...10 V), not in-

cluded in the supply.

Fig. 1 EUAZ-08 siphon (not

included in the EURV)

Technical particulars

Max. operating pressre 0,6 MPa

Test pressure 0,8 MPa

Max. operating temp.

Ambient temp., air 40°C

Brine 90°C

Max. mixture of glycol 40%

Pump motor 3-fas 400 V, 50 Hz

Degree of protection

pump motor IP 54

Pipe, size, flow

DN25 0,42...0,92 l/s

DN32 0,92...1,61 l/s

DN50 1,61...2,45 l/s

Size EURV Power supply, V Rating, W Rated current A 1)

20–21 550 1,6

22–30 3 x 400 550 1,6

31–40 750 1,8

41–42 740 1,8

Pump specification

RC2 Frosting monitor

S1 Actuator

Y Control signal from the

temperature controller

G, Go G: 24 V system potential

Go: system neutral

YGG0

RC2

Fig. 2

Connections diagram

1) The rated current may vary slightly between different batches of pumps. The

correct data are indicated on the pump rating plate.

EURV liquid coupled heat exchangers

Fläkt Woods 3197 GB 03.01 2 Specifications are subject to alteration without notice

EU Air Handling Unit INSTALLATION

Arrangement of liquid system

1. Circulation pump

2. Control box

3. Temperature controller

4. Valve actuator

5. 3-way valve

6. Expansion vessel

7. Safety valve

8. Draining/topping-up valve

9. Manometer

10. Contact thermometer

11. 1/2” hose connection

12. Adjustment valve

13. Shut-off valve

Charging the system

If the pressure is below 0.01 MPa, the system requires

charging with heat transfer medium. This is done by

pumping pre-mixed heat transfer medium (30% ethyle-

ne glycol) into the charging valve (8 in Fig. 3) until the

manometer reads 0.1 MPa.

Fig. 3

FläktGroup EURV Installation guide

FläktGroup EURV Installation guide

FläktGroup EURV Installation guide

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