Feature
Notes
Configuration Tables    Wiring      

Air Handing Unit Preheater Submodule

with 3 x Triac Outputs (3T version)
with 2 x 0-10V DC Outputs (AOP version)

Configuration Tables

Doorway / InSite Code

Label

Description

Units

Default Value

Range

C1
OCSP
Occupied setpoint
Deg C
-
0.5 to 35
C2
SACT
Sensor Action; for future use; set to 0 for this application
-
0
0 to 3
C3
DEGR
Maximum temperature rise across battery with heating at 100%
Deg C
10
5 to 50
C4
SPFR
Frost or non occupied setpoint
Deg C
-
0 to 20.0
C5
HPRD
Heating valve period or minimum on time
Secs/10
Depends on driver
1 to 240
C6
HDLY
Interlock delay
0: Battery starts with AHU Fan (no delay)
Negative value: for wet batteries, Valve opens before AHU Fan starts
Positive Value: for electric batteries, AHU Fan starts first runs on after battery shuts down
Mins
0
-60 to 60
C7
CPRD
For future use; set to 10 for this application
Secs/10
10
1 to 60
C8
CDLY
For future use; set to 0 for this application
Mins
0
-30 to 30
C9
FPRD
Ffor future use; set to 12 for this application
Secs/10
12
1 to 60
C7
INMD
Input Mode for input terminals 3 and 4 ‘temp a’
0: Additional temperature input for max, min, ave using SACT
1: External occupation (input linked = Occupied) AND
with internal Occupation
2: External occupation (input linked = Occupied) OR
with internal Occupation
3: External Occupation signal only
4: Alarm input
5: Pump alarm
-
0
0 to 5
C10
MIND
Minimum demand used for pump output:
0: Pump runs for whole of AHU Occupancy period
>0: Pump runs only when Preheat demand exceeds MIND
 
4
0 to 100
C11
FRPT
Frost mode
0 no action
1 open valve
2: open valve and run pump (if fitted)
-
1
0 to 2
C12
MANL
Manual level , from Doorway
%
0
-100 to 100
C13
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
C14
ALST
not used
-
0
0 to 1
C15
MXVA
Maximum Voltage output a (for AOP types only)
V
10
0 to 10
C16
MNVA
Minimum Voltage output a (for AOP types only)
V
0
0 to 10
C17
MXVB
Maximum Voltage output b (for AOP types only)
V
10
0 to 10
C18
MNVB
Minimum Voltage output b (for AOP types only)
V
0
0 to 10

Monitoring Parameters

Doorway / InSite Code

Label

Description

Units

Default Value

Range

I1 (C30)
FRST
Frost Protection Mode
-
-
0 to 1
I2 (C31)
OCC
Occupied
-
-
0 to 1
I4 (C33)
EXTI
External Input
-
-
0 to 1
I6 (C35)
RLYA
Triac A Status
-
-
0 to 1
I7 (C36)
RLYB
Triac B Status
-
-
0 to 1
I8 (C37)
RLYC
Triac C Status
-
-
0 to 1
W1 (C38)
AUTO
Automatic/Manual Status
-
-
0 to 1
W2 (C39)
OVRD
Override
-
-
0 to 1
W5 (C42)
HAND
Manual Hand mode
-
0
0 to 1
W6 (C43)
POT
Potentiometer fitted to this board
-
0
0 to 1
W7 (C44)
SERV
Service Pin Msg (to Doorway +InSite, self resetting)
-
-
0 to 1
 
 
W1 and W2 used together with Doorway Auto/Manual dialog box
 
 
 
S1* (C50)
TEMP
Measured off coil temperature
Deg C
-
0 to 35
S2* (C51)
DMND
Controller output
%
-
-100 to 100
S3 (C52)
REQD
Controller current setpoint
Deg C
-
0 to 35
S4 (C53)
HDMD
Heating output demand
%
-
0 to 100
S5 (C54)
CDMD
Cooling Demand to valve or damper (shows position)
%
-
0 to 100
S6 (C55)
FDMD
Fan or Pump Demand
%
-
0 to 100
K1 (C60)
OCSP
Occupation Setpoint
Deg C
8
1 to 35
K2 (C61)
DEGR
Maximum temperature across battery with heating at 100%
Deg C
10
5 to 30
   
* 24 hour plots available for these values by default
     
   
Plotting interval and plotted variable changeable via Doorway or InSite
     

 

 

SC Controls Ltd
PO Box313
Wadhurst
East Sussex
TN5 6JL
phone 08707 606040
fax 08707 606041
e-mail seachange@sccontrols.co.uk
http:// www.seachange.co.uk