Carrier /50HC 04-28, Controls, Start-Up, Operation And Troubleshooting, Page: 37 / 144

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* These can be viewed under the CCN Table OAU_CFG with a CCN device.
†These can be viewed under Configuration
→
OAU on the scrolling marquee or Navigator™ display.
Table 12 — Configurations - ERV Configurations Read from Comfort Link Controller
CCN POINT*
SCROLLING
MARQUEE
POINT†
EXPANDED TEXT RANGE UNITS DEFAULT FUNCTION
OAU_TYPE OA.TY Outdoor Air Unit Type
0=No OAU
1=FIOP EXv2
1: FIOP EXv2
Defines what kind of OAU is
installed
OAFANCRV OA.FC Outside Air Fan Curve 0 to 999
1: 04
2: 05-06
3: 07
4: 08-12
5: 14
6: 17-20
7: 24-28
Determine what outside air fan
curve to use
PEFANCRV PE.FC Exhaust Air Fan Curve 0 to 999
1: 04, 1ph, and econ
2: 04, 3ph, and econ
3: 04, 1ph, and no econ
4: 04, 3ph, and no econ
5: 05-06 1ph
6: 05-06 3ph
7: 07
8: 08-12
9: 14
10: 17-20 and econ
11: 17-20 and no econ
12: 24-28
Determine what exhaust air fan
curve to use
UNOCCRUN U.RUN
OAU Unoccupied
Operation
No/Yes NO
Tells OAU to run in unoccupied
mode
FATALOAU OAU.F Shut Down on Fan Failure No/Yes YES
Tells OAU to shut off if one of its
fans fail
MODWHEEL M.WHL Modulating Wheel Install No/Yes NO
Determine if the OAU’s wheel is a
modulating one
MINOACFM OA.MN
Minimum Outside Air
CFM
0 to 32000 CFM
375: 04
800: 0506
1000: 07
2500: 08-12
3000: 14
4000: 17-20
5000: 24-28
Sets Design OA CFM for ventilation
MINDCVSP DCV.M Min DCV Outside Air CFM 0 to 32000 CFM
100: 04
250: 05-06
600: 07
1000: 08-12
1500: 14-24
2000: 24-28
Sets absolute minimum OA CFM for
ventilation
PEX_CTL PEX.C Power Exhaust Control
0=offset CFM
1=BP
0
Determine how to control the
exhaust fans
EXOFFSET PE.OF
Power Exhaust CFM
Offset
- 17000 to 17000 CFM –200
Sets offset CFM setpoint of exhaust
based on intake
OAU_BPSP BP.SP Building Pressure Setpnt - 0.25 to 0.25 in H
2
O 0.05 Sets required building pressure
OATEMPER OA.TM Outside Air Tempering Disable/Enable Disable
Determine if there is tempering
heater installed
OATMPLOC TM.LO
OA Tempring Lockout
Temp
0 to 80 °F 60
Sets the outside temp and below to
allow tempering
OATMPSPT TM.SP
OA Tempring SAT
Setpoint
35 to 80 °F 55
Sets target supply air temperature
during tempering
OACFM_K OAC.K Outside Air CFM k Factor 0.8 to 1.2 1.0
Sets outside air curve correction
factor
EXCFM_K EXC.K Exhaust Air CFM k Factor 0.8 to 1.2 1.0
Sets exhaust air curve correction
factor
EFB_ENBL EFBE ERV Fan Boost Enable No/Yes NO
Tells RTU to adjust fan speed for
low outside air CFM