Emergency Override - Trane IntelliPak with Symbio 800 Installation, Operation And Maintenance Manual

When all VOM inputs are open, within 15 seconds, VOM
terminates. All unit components will be reset OFF or
Table 40. Ventilation override mode
VOM Input
Mode A
(Unit Off)
Mode B
(Pressurize)
Mode C
(Depressurize)
Mode D
(Purge)
Mode E
(Purge with Duct Static Pressure
Control)
(a) Supply fan will operate at full speed or a limited speed not to exceed duct static pressure high limit.

Emergency Override

Emergency override provides the ability for a Building
Automation System to override control of the HVAC
equipment to pressurize, depressurize, purge, shutdown
ventilation to the space for life safety or smoke control
systems. Refer to Table 41, p.
operation in response to Emergency Override commands.
RT-SVX063G-EN
OUTPUT
Supply fan
Outdoor air damper
Relief fan / Relief damper
VAV Box Relay
Supply fan
Outdoor air damper
Relief fan / Relief damper
VAV Box Relay
Supply fan
Outdoor air damper
Relief fan / Relief damper
VAV Box Relay
Supply fan
Outdoor air damper
Relief fan / Relief damper
VAV Box Relay
Supply fan
Outdoor air damper
Relief fan / Relief damper
VAV Box Relay
90summarizing the unit
CLOSED, and after Unit Power Up Delay is honored the
unit will start normal operation.
OPERATION
Off/0%
Closed
Off/Closed
Energized
On/100% (a)
100%
Off/Closed
Energized
Off/0%
0%
On/Open
De-engerized
On/100% (a)
Open
On/Open
Energized
On/Duct Static Pressure Control
Open
On/Open
Energized
Ventilation Override Mode v/s. Emergency Override
Ventilation Override inputs/output directly connect to fire
smoke control station (FSCS) panel. UUKL 864 requires
that firefighters have the ability to manually override
automated smoke control equipment. Manual changes
from a FSCS panel will take precedence over Emergency
Override from the Building Automation System.
Sequence of Operation
Heat Cool Mode Status
Off
Fan Only
Fan Only
Fan Only
Fan Only
89