Condenser Fan Control; Figure 26 - Qcc3100C - Qcc3130C Fan Location; Table 39 - Qcc3100C - Qcc3130C Condenser Fan Control - Johnson Controls Quantech Millennium QCC3080CZE Installation Operation & Maintenance

FORM QCC3-NM1
ISSUE DATE: 12/19/2023
Condenser fan control: QCC3100CYE – QCC3130CZE

Condenser fan control

Condenser fan control on models QCC3100C –
QCC3130C will always be by discharge pressure. The
on pressure and the differential off pressure are pro-
grammable under the PROGRAM key.
TABLE 39 - QCC3100C – QCC3130C CONDENSER FAN CONTROL
FAN
ON
STAGE
1
DP > Fan Ctrl On
1 FAN
Press
FWD
DP > Fan Ctrl On
2
Press
2 FANS
+ 20 psig (1.38
FWD
Bars)
DP > Fan Ctrl On
3
Press
3 FANS
+ 40 psig (2.76
FWD
Bars)
FAN #1
FAN #2
FIGURE 26 - QCC3100C – QCC3130C FAN LOCATION
Quantech
OFF
DP < Fan Ctrl On Press
– (Diff. Press.)
DP < Fan Ctrl On Press. –
[(Diff Press.) + 20 psig
(1.38 Bars)]
DP < Fan Ctrl On Press.) –
[(Diff Press.) + 40 psig
(2.76 Bars)]
FAN #5
FAN #3
The following Figures and Tables outline fan sequenc-
ing for the various models. These models are equipped
to operate to 0°F ambient as a standard.
I/O BOARD
CONTACTOR
OUTPUT
SYS 1 SYS 2 SYS 1
10M 14M TB7-9
13M TB7-9
9M and
and and
10M
14M TB7-10
TB7-8,
12M,
8M, 9M
TB7-9
13M
and
and and
10M
14M
TB7-10
FAN #4
SECTION 8: UNIT OPERATION
FAN #
SYS 2 SYS 1 SYS 2
TB10-9 7 8
TB10-9
and 5 and 7 6 and 8
TB10-10
TB10-8,
TB10-9 3, 5 4, 6
and and 7 and 8
TB10-10
FAN #6
LD14098
145
8