O
PERATION
OF
THE
BUILDING
MANAGEMENT
SYSTEM
(BMS)
H
EAT
RECOVERY
UNIT
en-50
en
4.1.5 Ventilation/Recirculation/Night cooling
426 Mode: ventilation/recirculation/night
cooling
The unit is designed to use heat recovery on ventilation air.
The unit can also recirculate or supply ventilation air without
heat recovery from extracted air (night cooling).
Note:
n
Register address 301 must have the value 1 (default)
(100% recirculation/ventilation).
REGISTER
ADDRESS
DESCRIPTION
RO
/
RW
*
CONTROL
UNIT
MINI
-
MUM
MAXI
-
MUM
DEFAULT
351
(
62.2
)
CO
2
level 1
rw
ppm
200
2000
800
352
(
62.3
)
CO
2
level 2
rw
ppm
200
2000
1000
353
(
62.4
)
CO
2
level 3
rw
ppm
200
2000
1200
432
CO
2
level from BMS
rw
ppm
0
2000
0
151
Input voltage, analogue input
X377
ro
0.01 V
-
-
-
*ro = read only (read only)
*rw = read & write (read and write)
REGISTER
ADDRESS
DESCRIPTION
RO
/
RW
*
CONTROL
UNIT
MINI
-
MUM
MAXI
-
MUM
DEFAULT
426
Mode: ventilation/recirculation/
night cooling
rw
-
0
10
0
*ro = read only (read only)
*rw = read & write (read and write)
