JOHNSON CONTROLS
59
SECTION 3 - HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
FORM 201.30-ICOM1 (519)
ISSUE DATE: 05/22/2019
3
0–20 or 4-20 mA Reset Input
A 0 or 4 mA signal produces a 0°F (0°C) reset. A 20
mA signal produces 100% (max.) reset (SETPOINTS
key). The setpoint reset is ramped linearly between
these limits as the input varies between 0 mA or 4 mA
and 20 mA. In order for this input to work properly,
program the Remote Temperature Reset for 0–20 mA
or 4-20 input (OPTIONS) and control board JUMPER
JP4 placed in the mA position.
Leaving Condenser Liquid Temperature Reset
Control
The same input used for Leaving Chilled Liquid Tem-
perature Reset is used for Leaving Condenser Liquid
Temperature Reset when the heat pump option is in-
stalled. The function of the input is controlled by se-
lecting the operating mode described in SECTION 6
- OPERATION in this manual.
Current Limit Reset Control
Install input for Current Limit Reset Control across
Terminals 19 (+) and 20 (-) of the 1TB Terminal Block.
How to Receive Voltage or Current Signal
The control board JUMPER JP5 must be positioned
correctly to receive a voltage (0-10VDC or 2-10VDC)
or a current (0-20mA or 4-20mA) signal. Place the
jumper in the V position for a voltage signal or mA for
a current signal. Configure the software under the OP-
TIONS key for the type of input signal to be used.
The minimum current limit setpoint is achieved at ei-
ther 10 VDC or 20 mA. Sending the minimum signal
(0 or 2 VDC, 0 or 4 mA, based on the OPTIONS key)
causes the current limit to revert back to its maximum
value.
0-10 or 2-10 VDC Reset Input
A 0 or 2 VDC signal produces a 0°F (0°C) reset.
A 10 VDC signal produces a 100% (max.) reset
(SETPOINTS key). The setpoint reset is ramped lin-
early between these limits as the input varies between
0 or 2 VDC and 10 VDC. In order for this input to
work properly, the Remote Temperature Reset must be
programmed for 0–10 or 2-10 VDC input (OPTIONS
key) and control board JUMPER JP5 placed in the V
position.
0–20 or 4-20 mA Reset Input
A 0 or 4 mA signal produces a 0°F (0°C) reset. A 20
mA signal produces 100% (max.) reset (SETPOINTS
key). The setpoint reset is ramped linearly between
these limits as the input varies between 0 mA or 4 mA
and 20 mA. In order for this input to work properly,
the program the Remote Temperature Reset for 0–20
mA or 4-20 input (OPTIONS key) and control board
JUMPER JP5 placed in the mA position.
INSTALLATION CHECKLIST – REQUEST FOR
START-UP SERVICE
When all items on the Installation Checklist and
Request for Authorized Start-up Technician (Form
201.30-CL1) (North America Only) are completed sat-
isfactorily, and before any attempt is made to start the
unit, contact the Johnson Controls Field Service Office
to schedule the start-up service.
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