JOHNSON CONTROLS
39
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
FORM 160.84-OM1
ISSUE DATE: 9/21/2017
3
ture Setpoint in Heating mode. See the Leaving Con-
denser Liquid Temperature Setpoint – Range Setpoint
description below.
Leaving Condenser Liquid Temperature
Setpoints – Shutdown
Displays the Leaving Condenser Liquid Temperature
at which the Heat Pump will shut down on LEAVING
CONDENSER LIQUID – HIGH TEMPERATURE
cycling shutdown in Heating mode. See Leaving Con-
denser Liquid Temperature Cycling Offset – Shutdown
Setpoint description below.
Leaving Condenser Liquid Temperature
Setpoints – Effective Offset
Displays the actual offset being used to create the Leav-
ing Condenser Liquid Temperature setpoints – Shut-
down temperature above. See Leaving Condenser Liq-
uid Temperature Cycling Offset – Shutdown Setpoint
description below.
Leaving Condenser Liquid Temperature
Setpoints – Restart
Displays the Leaving Condenser Liquid Temperature
at which the Heat Pump will restart after shutting down
on LEAVING CONDENSER LIQUID – HIGH TEM-
PERATURE cycling shutdown in Heating mode. See
Leaving Condenser Liquid Temperature Cycling Off-
set – Restart Setpoint description below.
Leaving Condenser Liquid Temperature
Setpoints – Offset
Displays the offset being used to create the Leaving
Condenser Liquid Temperature Setpoints
Restart temperature above. See Leaving Condenser
Liquid Temperature Cycling Offset – Restart Setpoint
description below.
For fields requiring access level of
SERVICE. Service Technicians refer to
the OptiView Control Center - Service
Instructions (Form 160.84-M2) for op-
eration instructions and explanation of
all programmable setpoints and display
values.
PROGRAMMABLE
Unit Control Mode
Access Level Required: OPERATOR
This setpoint can only be changed when the chiller is
stopped. This setpoint sets the Heat Pump operation to
either Cooling (default), Heating or Cooling & Heating
operation.
Local Heating Temperature – Setpoint
Access Level Required: OPERATOR
This allows the user to define the Local Mode Heat
Pump Leaving Condenser Liquid Temperature Setpoint
that is to be maintained in Heating mode. It is program-
mable over the range of 65.0°F to 122.0°F [235 PSIG
Condenser] [150.0°F 350 PSIG Condenser] (default
95.0°F). A remote device can provide an analog signal
(0 to 20mA, 4 to 20mA, 0 to 10VDC, 2 to 10VDC)
in Analog Remote mode, or a PWM signal in Digital
Remote mode that changes the setpoint by creating an
offset below this setpoint as detailed in the Local Leav-
ing Condenser Liquid Temperature Range description
below. A SC-Equip Gateway (in ISN BAS Remote
mode) can set the setpoint through a serial communi-
cations interface. In this case, the incoming setpoint is
not an offset below the local setpoint but is the control
setpoint value.
Local Heating Temperature – Range
Access Level Required: OPERATOR
This is the range over which an analog signal (0 to
20mA, 4 to 20mA, 0 to 10VDC or 2 to 10VDC) in
Analog Remote mode or a PWM signal (1 to 11 sec-
onds) in Digital Remote mode, can reset the Leaving
Condenser Liquid Temperature Setpoint below the op-
erator programmed local setpoint (see above) while the
Heat Pump is in Heating mode. Programmable values
are 10, 20, 30 or 40ºF (default 10). This number is sub-
tracted from the local setpoint to create a range over
which the remote device can reset the setpoint. For
example, if this setpoint is set for 10°F and the local
setpoint is 90°F, the remote device can set the Leaving
Condenser Liquid Temperature Setpoint over the range
of 90°F to 80°F.
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