Trane Symbio CVRF, Руководство по установке, Страница: 33 / 48

CVRF-SVN005C-EN 33
Starter Work
WARNING
Electrical Fault!
Failure to follow instructions below could result in
death or serious injury from burns or electric shocks.
Tracer® AdaptiView™ wye-delta starter timing is
different from UCP2 wye-delta starter timing.
Symbio™800 uses contactor auxiliary switches to
prevent simultaneous closure of run and shorting
contactors. Starter wiring changes MUST be made per
drawings listed in “Wiring Diagram Matrix,” p. 46 to
prevent an electric fault condition.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.

All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state/national electrical codes.
Important: Symbio™800 requires a closed transition
starter. If the existing starter is an open
transition style, it must be replaced.
Starter Control Planning
WARNING
Electrical Fault!
Failure to follow instructions below could result in
severe injury and equipment damage. Tracer®
Adaptiview™ requires the use of contactor auxiliary
switches to prevent simultaneous closure of run and
shorting contactors. Existing mechanical interlocks will
wear out and fail if not used in combination with
contactor auxiliary and result in the contactors
exploding. Starter wiring documented in “Wiring
Diagram Matrix,” p. 46 , MUST be made to prevent an
electrical fault condition.
The starter work required varies significantly from one
application to the next. These instructions are somewhat
generic. Detailed plans have to be worked out using these
instructions as a guide along with your specific starter wiring
and hardware information. Use the existing starter wiring and
the Symbio™ ship with starter wiring diagrams for determining
your exact wiring.
The 3-phase starter module can control the starter using one
of two methods:
– Direct control of each starter contactor
– Pilot relay interface to the existing contactors
Both methods result in similar operation of the starter. When
the module is wired for direct control all functions of the dry run
test can be performed. The pilot relay method must be used
when the contactor coils are voltages other than 115 Vac. If
both direct control or pilot relay control can be used on your
application, select the method that best suits your needs.
The wiring diagrams for direct control are referenced in
“Wiring
Diagram Matrix,” p. 46 . Also use “Wiring Diagram Matrix,”
p. 46 for pilot relay diagrams, sometimes referred to as
customer supplied starter wiring. Pilot relays are field provided.
Retain any special options and determine how they might fit
into the new method of control. Keep a detailed record of your
revisions to help with future troubleshooting.
Starter panel conversion varies with existing starter type and
starter control voltage. For reference,
“Wiring Diagram Matrix,”
p. 46 lists the electrical schematics for typical Symbio™ wiring
for wye-delta, across-the-line, primary reactor, auto
transformer, and solid-state starters.
Important: To ensure that the starter panel retrofit
procedure is performed properly, carefully
review the instructions in this section. Record a
detailed description of all electrical changes
made during the starter retrofit process. Be
sure to add a copy of this report to the chiller
record file for future reference.
The instructions that follow detail the rework of a typical wye-
delta starter for direct control by Symbio™ and the starter
module LLID.
While this conversion procedure specifically applies to wye-
delta starters, it can be adapted to successfully modify other
types of starters for operation with a Symbio™ starter module.
Starter Sub-Box Installation
The starter sub-box is intended for remote mount starter
installations where due to their custom nature there isn’t room
for mounting the sub-panel in the starter enclosure and/or such
an installation inside the enclosure would be inconvenient or
un-safe.
As the Symbio™ starter sub-panel provides a direct
replacement for a UCP2 starter module it is expected that the
sub-box will be rarely required, however a description of its
installation is provided in case it is needed.
1. Installing the Starter Panel sub-box
2. Mounting of the optional starter sub-box:
a. Remove door from box. Door can be hinged on either
side of cabinet.
b. Mount starter sub-box on starter panel as shown in
Figure 45, p. 35 using hardware provided. When
drilling holes in starter cabinet, take care to avoid
getting metal shavings into starter cabinet.