JOHNSON CONTROLS
123
SECTION 7 – UNIT CONTROLS
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
7
S Y S 1 S W I T C H O N
S Y S 2 S W I T C H O F F
This turns system 2 off
S Y S 1 S W I T C H O F F
S Y S 2 S W I T C H O N
This turns system 1 off
or
S Y S 1 S W I T C H O F F
S Y S 2 S W I T C H O F F
This turns systems 1 and 2 off
Turning a system OFF with its system
switch allows a pumpdown to be per-
formed prior to shutdown.
Option 3 – Chilled Liquid Cooling Type
C H I L L E D L I Q U I D
W
A T E
R
The chilled liquid is water. The Cooling Setpoint can
be programmed from 40 °F to 70 °F (4.4 °C to 21.1 °C)
or
C H I L L E D L I Q U I D
G L Y C O L
The chilled liquid is glycol. The Cooling Setpoint can be
programmed from 10 °F to 70 °F (-12.2 °C to 21.1 °C).
UNIT KEYS
Options Key
There are many user programmable options under the
OPTIONS key. The OPTIONS key is used to scroll
through the list of options by repeatedly pressing the
OPTIONS key. After the selected option has been dis-
played, the ↑ (UP) and ↓ (DOWN) arrow keys are then
used to change that particular option. After the option
is changed, the ENTER/ADV key must be pressed to
enter the data into memory.
Many of the OPTIONS displayed are
only programmable under the SERVICE
MODE and not under the OPTIONS key.
OPTIONS only programmable under the
SERVICE MODE are noted in the details
describing the option.
shows the programmable op-
tions. Following are the displays in the order they appear:
Option 1 – Language
D I S P L A Y L A N G U A G E
E
N
G L I S
H
English, Spanish, French, German, and Italian can be
programmed.
Option 2 – System Switches
(Two system units only, single system display is similar)
S Y S 1 S W I T C H O N
S Y S 2 S W I T C H O N
This allows both systems to run
o
r
00070VIP
OPTIONS
CLOCK
