Doorway / InSite Code

Label

Description

Units

Default Value

Range

C1

SPAH

Occupied Setpoint

Deg C

20

10 - 45

C2

SPDB

Setpoint Deadband

Deg C

1

0 to 10

C3

SPTR

Setpoint Trim; is added to the Occupied Setpoint (C1) to produce the working setpoint, used when setpoint is slaved from a Zone Controller

Deg C

0

-10 to 10

C4

SPTY

Setpoint Type; used to select mode of control :
FRE Type:-
3: Constant Supply Temp; setpoint = C1 / K1 .
4: Constant Supply Temp; setpoint slaved from a Zone Controller
RET Type:-
0: Constant Return Temp using Cascade (aka Reset) control; setpoint = C1/K1
1: Constant Return Temp using Cascade (aka Reset) control; setpoint slaved from a Zone Controller
6: Constant Return Temp only (no Cascade/Reset control); setpoint = C1/K1
7: Constant Return Temp only (no Cascade/Reset control); setpoint slaved from a Zone Controller
SUP Type:-
2: Variable Supply Temp based on heat/cool demands from one or more Zones/Terminal Units
5: Variable Supply Temp; supply setpoint slaved from another AHU

-

Depends on type

0 to 7

C5

SPFR

Frost Protection Setpoint; opens valves to 50% if OAT< SPFR

Deg C

10

0 to 20

C6

INMD

Input Mode; decides influence of external Volt Free Contact
0: Normal operation, external signal ignored
1: Occupied is External AND normal occupation
(window contact or contact used to stop AHU)
2: Occupied is External OR normal occupation
(Occupancy extension switch for outside normal hours)
3: Occupation controlled by external signal only

-

0

0 to 3

C7

MAXS

Maximum supply air setpoint

Deg C

30

2 to 70

C8

MINS

Minimum supply air setpoint

Deg C

10

0 to 30

C9

CUTS

Supply Air safety cutoff;
0: This feature inactive; AHU will not shut down
>0: If Supply Air falls below this value, AHU will shut down

Deg C

4

0 to 20

C10

NTCL

Night Cooldown Setpoint; if Return Air sensor fitted, can be used to pre-cool the building using free cooling at night:
0: Night Cooling disabled
>0: value used as Night Cooldown Setpoint

Deg C

0

0 to 25

C11

MIND

Minimum Demand necessary to run the AHU; (SUP version only)
0: AHU will run if any Zone is in Occupation or Warm-Up
(used for plants that are supplying Fresh Air)
>0: AHU will only run if max Zone demand is higher than MIND
(used for plants not supplying Fresh Air)
Not used, set to 0 in this application (FRE and RET versions only)

%

0

0 to 10

C12

MRUN

Minimum Run Time for AHU

Mins

5

0 to 20

C13

HPRD

Heating Valve Stroke Time (for Wet Coils) or Minimum-On Time for Electric Heater

Secs/10

18

2 to 60

C14

CPRD

Cooling Valve Stroke Time (for Wet Coils) or Minimum-On Time for Electric Cooling stage

Secs/10

18

2 to 60

C15

SFRT

Supply First; used to ensure positive pressurisation of building:
0 : Extract Fan starts before Supply Fan
1 : Supply Fan starts before Extract Fan

-

1

0 to 1

C16

OCCO

Occupancy Only; (FRE and RET versions only)
0 : AHU Runs in Warm-Up, Occupation and Fabric Protection
1: AHU Runs in Occupation only
Not used, set to 1in this application (SUP version only)

-

1

0 to 1

C17

RTRY

Retry Delay after fan failure has shut down AHU (before AHU restarts)

Hours

0

0 to 24

C18

HTSC

Heat Source; defines source of heat for Heater Battery:
0: for Electric Battery or non-SeaChange Boiler plant
1-20: to indicate source of heat (Boiler, Secondary Circuit
Controller etc.), set automatically during registration

-

1

0 to 20

C19

CLSC

Cool Source;
0: for Electric Battery or non-SeaChange cooling plant,
1-20: to indicate source of cooling (Chiller etc.)

-

0

0 to 20

C20

OCDS

Occupancy Destination; Occupancy demand signal “pointer” points to other AHUs or
other controllers:
0: feature is inactive
51-100 : will send Occupancy Status to AHU 1 - 50
(for AHU 1, set to 51, AHU2, set to 52 etc.)
101-200: will send Occupancy Status to Zones 1-100
(for Zone 1, set to 101, Zone 2, set to 102 etc.)

-

0

0 to 255

C21

MXCT

Maximum CT demand to Heat Source

Deg C

70

20 to 100

C22

MNCT

Minimum CT demand to Heat Source

Deg C

50

20 to 100

C23

HTSG

Number of Heating Stages (not used if wet heating battery)

-

2

1 to 5

C24

CSTG

Number of Cooling Stages (not used if wet cooling battery)

-

2

1 to 5

C25

HCOK

Heat/Cool OK;
1: allows heating and cooling to run simultaneously for closer
control when using staged DX battery with modulating
heating coil (not to be set when using DeHum control)
0: simultaneous heating and cooling not allowed (unless
DeHum control is enabled using RHSP)

-

0

0 to 1

C26

ALRM

Alarm Mode:
0: Ignore Alarms
1: Report Alarms to supervisor
(Fan Failure, Filter Blocked, Danger of Freezing, Outside Temperature sensor fault)
2: Report Alarms, shut down all outputs on STOP Alarm
3: as 2) above, and shut down TP or Staged outputs on Fan Failure

-

0

0 to 3

C27

ALST

Alarm State: State of inputs for Fan Failure/Filter Blocked:
0: Contact Opening generates alarm
1: Contact Closure generates alarm

-

0

0 to 1

Doorway / InSite Code

Label

Description

Units

Default Value

Range

I1 (C30)

INPA

Input A (fan fail) input status (Contact Closure = 1)

-

-

0 to 1

I2 (C31)

INPB

Input B (filter blocked) input status (Contact Closure = 1)

-

-

0 to 1

I3 (C32)

RLYA

Heating relay 1 status

-

-

0 to 1

I4 (C33)

RLYB

Heating relay 2 status

-

-

0 to 1

I5 (C34)

RLYC

Cooling relay 1 status

-

-

0 to 1

I6 (C35)

RLYD

Cooling relay 2 status

-

-

0 to 1

I7 (C36)

SFAN

Supply Fan status

-

-

0 to 1

I8 (C37)

EFAN

Extract Fan Status

-

-

0 to 1

W1 (C38)

AUTO

Automatic/Manual Status

-

-

0 to 1

W2 (C39)

OVRD

Override

-

-

0 to 1

W3 (C40)

RSET

Reset AHU after Fan failure shutdown (auto resetting after use)

-

-

0 to 1

W7 (C44)

SERV

Remote initiation of service pin message (SeaChange diagnostic use)

-

-

0 to 1

W8 (C45)

CGST

Configuration mode status

-

-

0 to 1

W1 and W2 used together with Doorway Auto/Manual dialog box

S1* (C50)

SPLA

Supply Air Temperature

Deg C

-

0 to 35

S2* (C51)

RTNA

Return Air Temperature

Deg C

-

0 to 35

S3* (C52)

HCOP

Heat / Cool output to Batteries

%

-

-100 to 100

S4 (C53)

INCL

Inter-coil temperature (not used in this application)

Deg C

-

0 to 50

S5 (C54)

OUTS

Outside Temperature (locally wired or via network)

Deg C

-

-30 to 35

S6 (C55)

SPSL

Current Supply temperature Setpoint

Deg C

-

5 to 30

S7 (C56)

SPRT

Current Return Temperature Setpoint

Deg C

-

5 to 30

S8 (C57)

SPLH

Supply Air Humidity

%

-

0 to100

S9 (C58)

RTNH

Return Air Humidity

%

-

0 to100

S10.(C59)

OUTH

Outside Air Humidity

%

-

0 to100

K1 (C60)

SPOC

Occupied Setpoint

Deg C

20

2 to 45

K2 (C61)

SPFR

Frost Protection Setpoint

Deg C

0

2 to 35

K3 (C62)

SPSV

Supervised Setpoint from Zone Controller (overrides C60)

Deg C

0

0 - 50

K4 (C63)

SPTR

Setpoint Trim; added to C62 to form current setpoint

Deg C

0

-10 to 10

K5 (C64)

RHSP

RH Setpoint for Return Air Humidity;
0: Disables Dehumidification
10 - 100: forms setpoint for Dehum control

%

0

10 to 100

K6 (C65)

RHDB

RH deadband for Dehumidification

%

5

2 to 50

Engineering Parameters; only accessible via Doorway and InSite

C90

NOAL

No Alarms; all alarms cleared when set to 1

-

-

0 to 1

C91

FANF

Fan Failure Alarm current (when set to 1)

-

-

0 to 1

C92

FLTF

Filter Blocked Alarm current (when set to 1)

-

-

0 to 1

C93

FREZ

Danger of Freezing Alarm current (when set to 1)

-

-

0 to 1

C94

OUTF

No Outside Temperature Available Alarm current (when set to 1)

-

-

0 to 1

C95

SUPF

Supply Sensor Failed (when set to 1)

-

-

0 to 1

C96

STOP

Controller shut down due to System Stop Alarm received (when set to 1)

-

-

0 to 1

These parameters are factory set; refer to SeaChange for special applications before changing these settings

C154

HRMN

Heating Driver input rescale minimum

%

0

0 to 100

C155

HRMX

Heating Driver input rescale maximum

%

100

0 to 100

C156

CRMN

Cooling Driver input rescale minimum

%

0

0 to 100

C157

CRMX

Cooling Driver input rescale maximum

%

100

0 to 100

* 24 hour plots available for these values by default

Plotting interval and plotted variable changeable via Doorway or InSite