Upstream Protection; Pre-Energization Check; Confirmation Of Wiring; Table 6 - Control And Oil Pump Wire Numbers And Termination Points For Ykep-Sys 1 - York YK Installation Manual

Form 160.00-N6
Issue date: 08/27/2021

Table 6 - Control and oil pump wire numbers and termination points for YKEP-SYS 1

MVVSD connector
location
24
↑
124
Wire numbers
↓
Chiller-wire
termination location
124
Initial commissioning
Voltages present within this drive en-
closure may be lethal. Only qualified
individuals are permitted to commission
this product.
The drive must be commissioned by quali-
fied personnel only.

Upstream protection

• Verify that primary protection exists for the input
wiring to the equipment. This protection must be
able to interrupt the available fault current from
the power line.
• All cable entry openings must be sealed to reduce
the risk of entry by vermin and to allow for maxi-
mum cooling efficiency.
• Follow all warnings and precautions, do not ex-
ceed equipment ratings.

Pre-energization check

After installation, but before energizing the MVVSD
for the first time, use the following procedure to verify
that the equipment is correctly installed and functional.
• There is a rating data label on the inside of each
medium voltage compartment door. Verify that
the MVVSD ratings properly match the system
data by checking the following:
1. Verify agreement of full load current and
locked rotor current with the motor name-
plate.
JOHNSON CONTROLS
16 53
↑ ↑
116 153
↓ ↓
OptiView panel - TB6
116 153
MVVSD - 1TB
L 2 R24
↑ ↑ ↑
L1 N1 R124
↓ ↓ ↓
OptiView
VSOP cabinet
panel - TB6
L1 N1 2
2. Verify that input voltage, number of phases
and frequency matches the MVVSD rating.
3. Verify that available short circuit current of
power system is less than the rated short cir-
cuit capacity of the MVVSD.
• Check connections: Although the equipment and
devices have been completely tested at the fac-
tory, a final field check must be made that all elec-
trical wiring and bus bar connections are correct
and have not become loose in transit.
• All blocks or other temporary braces used for
shipment must be removed.
• Before closing the enclosure, all metal chips,
scrap wire and other debris left over from the in-
stallation must be cleaned out.
• If there is an appreciable accumulation of dust or
dirt, the enclosure must be cleaned using a brush,
vacuum cleaner, or a clean lint free brush.
• The integrity of all bus bar supports must be
checked for secureness and damage.
• Make sure that when covers are installed and the
doors closed, no wires are pinched and that all en-
closure parts are properly aligned and tightened.
• A supply of spare parts, fuses, and other equipment
must be established.

Confirmation of wiring

Make the following final checks before applying pow-
er to the unit:
• Confirm that the source power is connected to ter-
minals L1, L2, and L3. Connection of incoming
source power to any other terminals can damage
the unit. Refer to the equipment diagrams shipped
with the unit for any special requirements.
Section 3 - Installation
67 68 69
↑ ↑ ↑
167 168 169
↓ ↓ ↓
VSOP cabinet
167 168 169
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