JOHNSON CONTROLS
124
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
SECTION 7 - UNIT CONTROLS
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 o.
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 & 2 o.
Turning a system o 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. Table 18 shows the pro-
grammable options. 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 simi-
lar)
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.
or
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 o.
or
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