Carrier 50FC - Pre-assembly Roofcurb Installation

13
5 - STARTING / STOPPING THE UNIT
There are di󰀨 erent procedures for starting / stopping the unit (On/O󰀨 ):
• By keyboard (from the terminal):
This procedure is always valid. If the unit is stopped from the
terminal, it cannot be started using any of the other procedures.
If the unit has stopped, all the functions and the di󰀨 erent variables
are disabled.
The ON / OFF function can be carried out:
* On the Graphic terminal:
From the MAIN MENU, in the group A. GENUNIT.
* On the User terminal (optional):
By pressing the key
.
When the unit is stopped, the display will only
show the date, time and the OFF symbol.
PM01
Unit off / on
by keyboard:
ON
It can also be done from the keyboard of the terminal, by
simultaneously pressing the keys for a few seconds.
• By digital input (remote On/Off ):
• By time phase (with scheduling):
From the MAIN MENU, in the group of screens L. SCHEDULE,
the unit can be stopped outside of the schedule.
Important: The “remote On/O󰀨 ” must be disabled for maintenance
tasks.
U18a1
Enabling remote
On/Off: Y
Remote Off with
PROTECTION mode: Y
PM01
Unit off / on
by keyboard:
ON
Note: The “On/O󰀨 by keyboard” always has priority over the
“remote On/O󰀨 ”.
When the unit is stopped by “remote On/O󰀨 ”, it is also possible to
enable the automatic unit start when a temperature setpoint for
PROTECTION of the building is reached.
The “remote On/O󰀨 ” can only be done if the option “On” is selected
on the screen PM01.
The “remote On/O󰀨 ” is carried out by means of the digital input DI7:
- open contact: unit OFF
- closed contact: unit ON
Note: To activate the remote o󰀨 /on the bridge made in this input
must be eliminated (see wiring diagram)
This procedure must be enabled on the group of screens I.
USERCONFIG (protected by level 2 password).
The “On/O󰀨 by time phase” can only be done if the option “On”
is selected on the screen PM01.
PH03
Start type
'ON-OFF schedule'
Note: See the di󰀨 erent types of schedules in the chapter of
“Scheduling”.
Important: If the procedures of “remote On/O󰀨 ” and “On/O󰀨 by
time phase” are simultaneously active, the unit will start only if
both agree.
PM01
Unit off / on
by keyboard:
ON
Important: If the procedures of “On/O󰀨 by time phase” and “remote
On/O󰀨 ” are simultaneously active, the unit will start only if both
agree.
Press the
key, the following screen is reached:
Main menu 01/15
GENUNIT
HCCONFIG
SETPOINT
B
C
A
M
N
L
Main menu 12/15
SCHEDULE
ALARMS
GENTEST