Trane SRV-SVX04C-EN, Installation, Operation And Maintenance Manual

Page: 9 / 24

SRV-SVX04C-EN 9
Installation - Controls
Customer Interface
• Start the system in Auto mode using the AUTO/OFF/
MANUAL selector to interface with customer supplied
equipment.
• Start the system in Auto mode by selecting the contact
closure through the
ON/OFF selector switch between
TB06#61 and TB06#10.
• MANUAL mode does not require the dry contact closure
input to enable the system to start.
• The selector switch has an integral light and will illuminate
to indicate the equipment has power.
Auxiliary Dry Contacts -
Operational System States
• SYSTEM FAULT - Auxiliary dry contacts of CR02 are
provided for customer interlocking and will close when the
dehumidifier goes into any fault as described in the list of
system and DH warnings. See
“List of System and DH
Warnings,” p. 11 .
• SYSTEM RUN (CONTROL RELAY) - Auxiliary dry
contacts of MS03 are provided for customer interlocking
and will close when the process blower is in operation.
• SYSTEM WARNING - Auxiliary dry contacts of CR03 are
provided for customer interlocking and will close when the
dehumidifier goes into a warning condition.
• D/H RUN - Auxiliary dry contacts of MS02 are provided for
customer interlocking and will closed when the
dehumidifier is in operation.
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.
Start-up
Main Power Initialization Sequence
1. Energize the main power to the equipment by supplying
correct voltage directly to the unit using the system main
fused disconnect.
Note: The selector switch will illuminate indicating the
equipment is energized.
2. High voltage is supplied to all motor starters and control
transformer(s). The control voltage (115V/1Ø/60Hz) is
supplied to the control circuits.
3. The HMI LCD (located on or in, visible through the door)
main control enclosure is energized and will display
System Screen . See Figure 3 .
4. There is a 10 second delay in the equipment start-up once
power is activated by the selector switch.
Figure 3. HMI LCD
Normal Start-up
Normal start-up occurs when the main selector switch (SS01)
is placed in the
MANUAL or AUTO position with a customer-
supplied auxiliary interlock (dry-contact) closed between
TB06#61 and TB06#I0.2.
Shutdown
A normal shutdown will occur if:
• Selector switch (SS01) is maintained in the OFF position.
• Selector switch (SS01) is maintained in AUTO position
with a contact opening across TB06 # 61 and TB06 # I0.2.
• A fault has occurred.
Normal shutdown sequence of operation:
1. The reactivation control proportional control loop and fault
circuits are de-energized.
2. The process control loops are de-energized in the list of
system and DH warnings. See “List of System and DH
Warnings,” p. 11 .
3. A purge timer in the (PLC1) is a delay time with a fixed, on
time of three minutes. This allows the air to continue to cool
the desiccant wheel. When the timer has completed its
count cycle, the desiccant wheel drive motor (MTR1), the