York YCAL0043 Installation Operation & Maintenance

JOHNSON CONTROLS
163
SECTION 8 – UNIT OPERATION
FORM 150.67-NM2
ISSUE DATE: 01/31/2019
8
STANDARD CONDENSER FAN CONTROL – YCAL0019 – YCAL0033
TABLE 22 - YCAL0019 – YCAL0033 CONDENSER FAN CONTROL USING DISCHARGE PRESSURE
FAN
STAGE
ON* OFF*
CONTACTOR
MICROBOARD
OUTPUT
FAN #
SYS 1 SYS 1 SYS 1
1 DP> Fan Crtl On Press
DP < Fan Ctrl On Press
– Diff.Press
7M TB7-9 1
2
*DP > Fan Ctrl On Press
and Fan Stage 1 is
energized
**DP < Fan Ctrl On
Press –
Diff. Press
7M
&
8M
TB7-9
&
TB7-10
1
&
3
TABLE 23 - YCAL0019 – YCAL0033 CONDENSER FAN CONTROL USING DISCHARGE PRESSURE ONLY
FAN
STAGE ON OFF
CONTACTOR
MICROBOARD
OUTPUT
FAN #
SYS 1 SYS 1 SYS 1
1
DP > Fan Ctrl
On Press
DP < Fan Ctrl On Press
– (Diff. Press.)
7M TB7-9 1
2
DP > Fan Ctrl On Press
and Fan Stage 1 is
energized
**DP < Fan Ctrl On
Press – Diff. Press.
7M
&
8M
TB7-9
&
TB7-10
1
&
3
* When a fan stage is turned on, the on pressure for the next stage is increased 20 PSIG and ramped back to the programmed on pressure
over the next 20 seconds.
** When a fan stage is turned off (programmed on pressure minus differential), the off pressure for the next stage is decreased 20 PSIG and
ramped back to the programmed off pressure minus the differential.
LD12211
FAN #1
FAN #2
FIGURE 43 - YCAL0019 – YCAL0033 FAN LOCATION (TYPICAL)

York YCAL0043 Specifications

General

Brand	York
Model	YCAL0043
Category	Chiller
Language	English