Reading Parameter - Carrier 39HXC Manual

Controls manual
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8 - PARAMETERS
No,
Description
271,1 Downgraded mode start fresh air temperature
271,2 Downgraded mode end fresh air temperature
271,3 % min. flow rate in downgraded mode
280
Fire safety operating mode
282
Intake flow rate in case of fire
283
Exhaust flow rate in case of fire

8.3 - Reading parameter

No.
Description
300
Calculated intake flow rate setpoint
301
Air intake fan flow rate
302
Intake fan differential pressure
Intake duct calculated pressure
304
setpoint
305
Intake duct pressure
Calculated extraction flow rate 
306
setpoint
307
Air extraction fan flow rate
308
Extraction fan differential pressure
Exhaust duct pressure calculated
310
setpoint
311
Exhaust duct pressure
312
Intake filter differential pressure
313
Exhaust filter differential pressure
Fouled intake filter differential 
314
pressure calculated threshold
Blocked intake filter differential 
315
pressure calculated threshold
Fouled exhaust filter differential 
316
pressure calculated threshold
Blocked exhaust filter differential 
317
pressure calculated threshold
320
Calculated cooling setpoint
321
Calculated heating setpoint
322
Supply air temperature
323
Fresh air temperature
324
Return air temperature
325
Internal supply air temperature
326
Room temperature
Setting
Enumeration
0: off
1: Intake override/exhaust
stop
2: Exhaust override/intake
stop
3: Intake and exhaust
override
Setting
Enumeration
Min.
Max.
0
150000
0
320000
0
5000
0
5000
0
5000
0
150000
0
320000
0
5000
0
5000
0
5000
0
1000
0
1000
0
1000
0
1000
0
1000
0
1000
0,0
50,0
0,0
50,0
-99.0
99,9
-99.0
99,9
-99.0
99,9
-99.0
99,9
-99.0
99,9
Unit
Display conditions
By default
10,0
°C
-20.0
°C
30,0
%
0
P24 = with and P104 = flow rate 
P110
m
/h
3
P110
m
/h
3
Unit
Display conditions
Increment
P104 Air intake ventilation control
10
m
/h
3
10
m
/h
3
1
Pa
P104 Air intake ventilation control
1
Pa
P104 Air intake ventilation control
1
Pa
P104 Intake ventilation control = 
P104 Intake ventilation control = 
10
m
3
/h
P105 = Exhaust ventilation control 
Flow rate feedback
10
m
/h
3
1
Pa
P104 Intake ventilation control = 
1
Pa
P105 Exhaust ventilation control = 
P104 Intake ventilation control = 
1
Pa
P105 Exhaust ventilation control = 
1
Pa
1
Pa
1
Pa
1
Pa
1
Pa
1
Pa
0,1
°C
0,1
°C
Last sensor in the direction of
0,1
°C
0,1
°C
0,1
°C
(P03 < 2) and ((Number of coils
0,1
°C
Number of coils > 0 and P01 = 
P154 Target temperature selection
0,1
°C
Access
level
P271 = With
2
P271 = With
2
P271 = With
2
P24 = with
2
control
P280 = 1 or 3
2
P280 = 2 or 3
2
Access
level
= 
1
Flow rate
1
1
= 
1
Duct pressure
= 
1
Duct pressure
Flow rate
or
Duct pressure
1
and
= 
1
1
Duct pressure
and
1
Duct pressure
Duct pressure
and
1
Duct pressure
1
1
1
1
1
1
1
1
1
airflow
1
1
>1)
or (P29 > 0))
1
or
ceiling unit
1
= Room
55

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