Installation
66 RT-SVX36K-EN
– Occupied/Unoccupied output - De-energized
(Occupied)
– VO Relay - Energized
– Pre-heater State - Off (if equipped)
• VOM Mode “B” Priority2-Pressurize:
– Supply fan - ON
– VFD - 100% (if equipped)
– Exhaust/Return fan - OFF, Exhaust/Return dampers
- Closed
– O/A dampers - Open
– Heat - All stages OFF, Modulating Heat output at 0
VDC
– Occupied/Unoccupied output - Energized
(Unoccupied)
– VO Relay - Energized
– Pre-heater State - Off (if equipped)
• VOM Mode “C” Priority 3 - Exhaust/Return:
– Supply fan - OFF
– VFD - 0% (if equipped)
– Exhaust/Return fan - ON, Exhaust/Return dampers -
Open
– O/A dampers - Closed
– Heat - All stages OFF, Modulating Heat output at 0
VDC
– Occupied/Unoccupied output - De-energized
(Occupied)
– VO Relay - Energized
– Pre-heater State - Off (if equipped)
• VOM Mode “D” Priority4-Purge:
– Supply fan - ON
– VFD - 100% (if equipped)
– Exhaust/Return fan - ON, Exhaust/Return dampers -
Open
– O/A dampers - Open
– Heat - All stages OFF, Modulating Heat output at 0
VDC
– Occupied/Unoccupied output - Energized
(Unoccupied)
– VO Relay - Energized
– Pre-heater State - Off (if equipped)
• VOM Mode “E” Priority5-Purge with duct pressure
control:
– Supply fan - ON
– VFD - (if equipped) Controlled by S/A Pressure
Control with supply air pressure high limit disabled.
– Exhaust/Return fan - ON, Exhaust/Return dampers -
Open
– O/A dampers - Open
– Heat - All stages OFF, Modulating Heat output at 0
VDC
– Occupied/Unoccupied output - Energized
(Unoccupied)
– VO Relay - Energized
– Pre-heater State - Off (if equipped)
“OFF” - will appear in theVentilation Override screen after
all VOM binary inputs have been reset (opened).
Due to codes in some areas, the definitions for some or all
of theVOM modes may have to be lock ed into the program
by the user. Once the definitions are locked, theVentilation
Override Module must be replaced in order to reprogram
that sequence.
Refer to Figure 40, p. 57 or Figure 47, p. 75 for the proper
connection terminals in the unit control panel for each of
the VOM initiating device’s and the appropriate
Programming,Troubleshooting Guide (PTG Latest
Edition) for programming instructions.
Emergency Override Definitions (with LCI-I/
BCI-I module installed)
When an LCI-I/BCI-I module is installed, the user can
initiate one of five (5) Emergency Override sequences that
have the following predefined unit operation:
PRESSURIZE
– Supply Fan - On
– Exhaust/Return Fan - Off (if equipped)
– Exhaust/Return Dampers - Closed (if equipped)
– OA Dampers - Open
– Heat - All heat stages Off (staged gas and elec.),
Hydronic
– Heat & Mod Gas Heat output at 0%.
– Occupied/Unoccupied output - Energized
– VO Relay - Energized (with VOM module installed)
– OA Preheater State - Off (with VCM module
installed)
DEPRESSURIZE
– Supply Fan - Off
– Exhaust/Return Fan - On (if equipped)
– Exhaust/Return Dampers -Open (if equipped)
– OA Dampers - Closed
– Heat - All heat stages Off (staged gas and elec.),
Hydronic
– Heat & Mod Gas Heat output at 0%.
– Occupied/Unoccupied output - De-energized
– VO Relay - Energized (with VOM module installed)
– OA Preheater State - Off (with VCM module
installed)