FCU Configuration variables


ref
 
Description

default

range

C1

SPFC

Occupied Setpoint

20

10.0 to 35.0C

C2

SPDB

Setpoint Deadband

1.0

0.0 to 10.0C

C3

SPTR

Setpoint Trim

0

-10.0 to 10.0 C

C4

SPTY

Setpoint Type, control mode
0 control to SPFC, occupation from Master Zone
1 SPFC supervised from Master Zone
2 Off Coil temperature control, Heat/Cool demands from Zone Controller or another Fan Coil


1

0 to 2

C5

INMD

Input Mode use of terminals 'temp'
0 supply temperature
1 window contact (short = occupied) AND internal occ
2 Time Clock OR internal clock
3 External occupation signal only
4 Alarm input


0

0 to 4

C6

MAXH

Maximum Supply Heating setpoint

30

0 to 90C

C7

MINH

Minimum Supply Heating setpoint

20

0 to 90C

C8

MAXC

Maximum Supply Cooling setpoint

18

2 to 30C

C9

MINC

Minimum Supply Heating setpoint

10

2 to 30C

C10

MIND

Supply minimum demand, used for switching between heating and cooling

4

0.0 to 10.0

C11

OCCO

When set controller will only run during the occupied period

0

0 to 1

C12

HPRD

heating valve period or minimum on time

depends on driver type

1 to 60 secs/10

C13

HDLY

Interlock delay
negative value delays fan (or pump) after heating starts
positive value cause run on of fan after heating shuts down


0

-30.0 to 30.0 minutes

C14

CPRD

cooling valve period or minimum on time

depends on driver type

1 to 60 secs/10

C15

CDLY

Interlock delay
negative value delays fan (or pump) after cooling starts
positive value cause run on of fan after cooling shuts down


0

-30.0 to 30.0 minutes

C16

FPRD

Fan period, minimum time to change fan speed steps

12 (2 minutes)

1 to 60 secs/10

C17

FRPT

Frost protect
0 no action
1 open heating valve 50%
2 open heating valve and run pump/fan


0

0 to 2

C18

MANL

Manual level , from Doorway

0

-100 to 100 %

C19

HTSC

Heat source

1

8255

C20

CLSC

Cool source

0

8255

C21

MXCT

Maximum CT setpoint

70

20 to100 C

C22

MNCT

Minimum CT setpoint

50

20 to 100 C
C23 MIDP Mid position for Airside Damper control 0 0 to 99%

C24

ALRM

alarm mode 
0 ignore alarms
1 report alarms
2 report alarms, shut down all outputs on alarm
3 report alarms, shut down all outputs on STOP alarm or sensor fail alarm


1

0 to 3

C25

ALST

not used

0

0 to 1



Digital monitoring
6R derivatives (Boiler Board)

ref
 
Description
default
range
C30
INPA
input A  occupation/window contact et al
 
0 to 1
C31
INPB
input B
 
0 to 1
C32
RLYA
relay A
 
0 to 1
C33
RLYB
relay B
 
0 to 1
C34
RLYC
relay C
 
0 to 1
C35
RLYD
relay D (fan A)
 
0 to 1
C36
RLYE
relay E (fan B)
 
0 to 1
C37
RLYF
relay F (fan C)
 
0 to 1
C38
AUTO
Automatic/manual mode
 
0 to 1
C39
OVRD
override
 
0 to 1
C45
CGST
configuration mode
   


other boards


ref
 
Description

default

range

C30

INPA

input A  occupation/window contact et al
 
0 to 1

C31

OCCD

occupied
 
0 to 1

C32
 
not used
 
0 to 1

C33
 
not used
 
0 to 1

C34

COOL

cooling mode
 
0 to 1

C35

RLYA

relay A
 
0 to 1

C36

RLYB

relay B
 
0 to 1

C37

RLYC

relay C
 
0 to 1

C38

AUTO

Automatic/manual mode
 
0 to 1

C39

OVRD

override
 
0 to 1
C44 SERV operation of Registration button from Doorway self resets   0 to 1

C45

CGST

configuration mode
   


sensors

ref
 
Description
default
range
C50
SPLA
supply air temperature
 
5.0 to 35.0 C 
C51
RTNA
return air temperature
 
5.0 to 35.0 C
C52
HCOP
heat cool output to drivers (cooling negative)
 
-100 to 100 %
C53
SPSL
supply (off coil) setpoint
 
5.0 to 35.0 C
C54
SPRT
return air setpoint
 
5.0 to 35.0 C
C55
HDMD
heat demand from return loop or from Zone Controller
 
0 to 100%
C56
CDMD
cool demand from return loop or from Zone Controller
 
0 to 100%


knobs

ref
 
Description
default
range
K1
SPOC
Occupied setpoint
20.0
5.0 to 35.0 C
K2
SPNO
Non Occupied setpoint
10.0
5.0 to 20.0 C
K3
SPSV
Supervised setpoint from Master controller
 
0 to 35.0 C
K4
SPTR
Setpoint Trim
0
-10.0 to 10.0 C	 

K5

MXVA*

Maximum voltage channel A

10.0

0.0 to 10.0 volt

K6

MNVA*

Minimum voltage channel A

0.0

0.0 to 10.0 volt

K7

MXVB*

Maximum voltage channel B

10.0

0.0 to 10.0 volt

K8

MNVB*

Minimum voltage channel B

0.0

0.0 to 10.0 volt

*AOP versions only

Engineering Parameters