14
ENG
“EVD mini” +0300036EN - rel. 1.2 - 23.04.2018
4.5 Initial configuration parameters
Important:
ONLY DURING COMMISSIONING, changing the
refrigerant also means having to change the type of ratiometric probe;
if not specified in the table, the ratiometric probe type is (-1 ... 9.3 barg).
R
efrigerant
Parameter/ description
Def.
Gas Type = refrigerant
0 = Custom
1
R22
15
R422D
29
R455A (-1...12.8 barg)
2
R134a
16
R413A
30
R170 (0...17.3 barg)
3
R404A
17
R422A
31
R442A (-1...12.8 barg)
4
R407C
18
R423A
32
R447A (-1...12.8 barg)
5
R410A
19
R407A
33
R448A
6
R507A
20
R427A
34
R449A
7
R290
21
R245FA
35
R450A (-1...4.2 barg)
8
R600
(-1...4.2 barg)
22
R407F
36
R452A (-1...12.8 barg)
9
R600a
(-1...4.2 barg)
23
R32
(0...17.3 barg)
37
R508B (-1...4.2 barg)
10 R717
24
HTR01
38
R452B
11 R744
(0...45 barg)
25
HTR02
39
R513A (-1...4.2 barg)
12 R728
26
R23
40
R454B
13 R1270
27
R1234yf
14 R417A
28
R1234ze (-1...4.2
barg)
3 =
R404A
Note:
if the refrigerant gas is not among those selectable for the
“GAS Type = refrigerant” parameter:
1.
set any refrigerant (e.g. R404);
2.
select the type of main control, the superheat set point and complete
the initial commissioning procedure;
3.
use the VPM program (Visual Parameter Manager, see the chapter
“Network connection”) and set the type of refrigerant: “0 = custom”
and the “Dew point a...f high/low” parameters that define the
refrigerant;
4.
start control, for example by closing the digital input contact.
O
perating mode
Mode = Operating mode
1 Multiplexed showcase/cold room
2 Air-conditioner/chiller with plate heat exchanger
3 Air-conditioner/chiller with tube bundle heat exchanger
4 Air-conditioner/chiller with finned coil heat exchanger
5 Analogue positioner (0 to 10 V)
6 Superheat control with 2 temperature probes
7 Subcritical CO2 showcase/cold room
8 Hot gas bypass by pressure
9 Hot gas bypass by temperature
1 = Mul-
tiplexed
showcase/
cold room
S
et point
Note:
take into consideration the unit of measure (K/°F) when
setting the superheat set point.
Superheat set point
11 K(20°F)
Bypass pressure set point
3 bar
Bypass temperature set point
10 °C