RT-SVX063G-EN
89
When all VOM inputs are open, within 15 seconds, VOM
terminates. All unit components will be reset OFF or
CLOSED, and after Unit Power Up Delay is honored the
unit will start normal operation.
Table 40.
Ventilation override mode
VOM Input
OUTPUT
OPERATION
Heat Cool Mode Status
Mode A
(Unit Off)
Supply fan
Off/0%
Off
Outdoor air damper
Closed
Relief fan / Relief damper
Off/Closed
VAV Box Relay
Energized
Mode B
(Pressurize)
Supply fan
On/100%
(a)
Fan Only
Outdoor air damper
100%
Relief fan / Relief damper
Off/Closed
VAV Box Relay
Energized
Mode C
(Depressurize)
Supply fan
Off/0%
Fan Only
Outdoor air damper
0%
Relief fan / Relief damper
On/Open
VAV Box Relay
De-engerized
Mode D
(Purge)
Supply fan
Fan Only
Outdoor air damper
Open
Relief fan / Relief damper
On/Open
VAV Box Relay
Energized
Mode E
(Purge with Duct Static Pressure
Control)
Supply fan
On/Duct Static Pressure Control
Fan Only
Outdoor air damper
Open
Relief fan / Relief damper
On/Open
VAV Box Relay
Energized
(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
summarizing the unit
operation in response to Emergency Override commands.
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.
Содержание IntelliPak with Symbio 800
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