Johnson Controls York Smart Equipment SC-EQUIP, York Smart Equipment SC-EQ Installation Instructions Manual
SC-EQ
COMMUNICATION CARD
(Also Contains Relevant SC-AP Information)
INSTALLATION INSTRUCTIONS Supersedes: 450.50-N1 (1117) Form 450.50-N1 (819)
035-25087-000
YK
YVWA
YMC
YZ
2
Issue Date:
August 19, 2019
REV.8
IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
FORM 450.50-N1
ISSUE DATE: 08/19/2019
This equipment is a relatively complicated apparatus.
During rigging, installation, operation, maintenance,
or service, individuals may be exposed to certain components or conditions including, but not limited to:
heavy objects, refrigerants, materials under pressure,
rotating components, and both high and low voltage.
Each of these items has the potential, if misused or
handled improperly, to cause bodily injury or death. It
is the obligation and responsibility of rigging, installation, and operating/service personnel to identify and
recognize these inherent hazards, protect themselves,
and proceed safely in completing their tasks. Failure
to comply with any of these requirements could result
in serious damage to the equipment and the property in
which it is situated, as well as severe personal injury or
death to themselves and people at the site.
This document is intended for use by owner-authorized
rigging, installation, and operating/service personnel. It
is expected that these individuals possess independent
training that will enable them to perform their assigned
tasks properly and safely. It is essential that, prior to
performing any task on this equipment, this individual
shall have read and understood the on-product labels,
this document and any referenced materials. This individual shall also be familiar with and comply with
all applicable industry and governmental standards and
regulations pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to specific situations:
Indicates a possible hazardous situation
which will result in death or serious injury
if proper care is not taken.
Identies a hazard which could lead to
damage to the machine, damage to other
equipment and/or environmental pollution if proper care is not taken or instructions and are not followed.
Indicates a potentially hazardous situation which will result in possible injuries
or damage to equipment if proper care is
not taken.
External wiring, unless specied as an optional connection in the manufacturer’s product line, is not
to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls
and any external wiring must not be installed inside the micro panel. All wiring must be in accor-
dance with Johnson Controls’ published specications and must be performed only by a qualied
electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper
connections to the controls or application of improper control signals. Failure to follow this warn-
ing will void the manufacturer’s warranty and cause serious damage to property or personal injury.
2
Highlights additional information useful
to the technician in completing the work
being performed properly.
JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
CHANGEABILITY OF THIS DOCUMENT
In complying with Johnson Controls’ policy for continuous product improvement, the information contained in this document is subject to change without
notice. Johnson Controls makes no commitment to
update or provide current information automatically
regarding the applicability of these documents, rigging, lifting, and operating/service personnel should
verify whether the equipment has been modified and
if current literature is available from the owner of the
equipment prior to performing any work on the chiller.
to the manual or product owner. Updated manuals, if
applicable, can be obtained by contacting the nearest
CHANGE BARS
Johnson Controls Service office or accessing the Johnson Controls QuickLIT website at http://cgproducts.
johnsoncontrols.com.
Revisions made to this document are indicated with a
line along the left or right hand column in the area the
revision was made. These revisions are to technical inIt is the responsibility of rigging, lifting, and operating/
service personnel to verify the applicability of these
formation and any other changes in spelling, grammar
or formatting are not included.
documents to the equipment. If there is any question
ASSOCIATED LITERATURE
MANUAL DESCRIPTION FORM NUMBER
SC-AP Installation Instructions LIT 24-10737-75
SC-AP Quick Start LIT 24-10737-87
JOHNSON CONTROLS
3
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JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
TABLE OF CONTENTS
SECTION 1 - INTRODUCTION ................................................................................................................................. 9
Overview ..........................................................................................................................................................9
Emissions Compliance .................................................................................................................................. 10
SECTION 2 - INSTALLATION ................................................................................................................................ 11
Wiring ............................................................................................................................................................. 11
Protection of Communication Ports ............................................................................................................... 11
High Noise Environments ............................................................................................................................... 12
Electrical Noise Mitigation to Equipment ....................................................................................................... 12
Electrical Noise Mitigation SC-EQ to BAS ...................................................................................................... 12
Types of Communication Ports ......................................................................................................................12
Network Termination .......................................................................................................................................12
Media Access Control (MAC) Address ...........................................................................................................13
BAS Network Wiring ....................................................................................................................................... 14
Mounting ........................................................................................................................................................ 15
OptiView Panel Installation ............................................................................................................................. 15
Small Tonnage Panel Installation ...................................................................................................................16
YMAA, YCAE, and YCWE-E Panel Installation ..............................................................................................17
YVWE and YVWH Panel Installation .............................................................................................................. 20
YEWS and YGWE Single Panel Installation...................................................................................................20
Other Chiller Panel Installation ....................................................................................................................... 21
Mounting on a Micro Panel ............................................................................................................................. 22
Wall Mounting .................................................................................................................................................23
Applying Power ..............................................................................................................................................23
Equipment Configuration ................................................................................................................................ 25
Setting the Rotary Switch on Chiller Panels .................................................................................................. 25
SECTION 3 - TROUBLESHOOTING ...................................................................................................................... 33
LED Indicators ................................................................................................................................................ 33
Multimeter Checks of the BAS Port ................................................................................................................ 34
Updating the Firmware and the Software ....................................................................................................... 35
Repair Information .......................................................................................................................................... 36
SECTION 4 - SC-AP GATEWAY .............................................................................................................................37
SC-AP OptiView Mounting ............................................................................................................................37
Using the SC-AP for Troubleshooting.............................................................................................................39
E-Link Replacement ....................................................................................................................................... 40
Manually Setting the Chiller Model ................................................................................................................. 41
SECTION 5 - TECHNICAL SPECIFICATIONS ....................................................................................................... 43
SECTION 6 - LON PROTONODE ........................................................................................................................... 45
Overview ........................................................................................................................................................45
Installation ......................................................................................................................................................46
ProtoNode LED Functionality ......................................................................................................................... 49
Binding the Points Using the .XIF File ............................................................................................................ 49
Technical Specifications .................................................................................................................................50
JOHNSON CONTROLS
5
FORM 450.50-N1
ISSUE DATE: 08/19/2019
LIST OF FIGURES
FIGURE 1 - Grounding Label .................................................................................................................................. 11
FIGURE 2 - RS-485 EOL Switches .........................................................................................................................13
FIGURE 3 - 3-Wire BAS .......................................................................................................................................... 14
FIGURE 4 - 2-Wire BAS .......................................................................................................................................... 14
FIGURE 5 - 100 Ohm Resistor Installation..............................................................................................................14
FIGURE 6 - SC-EQ Installed in OptiView (All Chillers Except YMC2) ....................................................................15
FIGURE 7 - SC-EQ Installed in YMC2 OptiView .....................................................................................................15
FIGURE 8 - SC-EQ OptiView Installation Kit (All Chillers) (YORK p/n 331-03607-000) .........................................16
FIGURE 9 - SC-EQ Screw Chiller Installation Kit Part Number 392-41228-000 ..................................................... 16
FIGURE 10 - SC-EQ Scroll Chiller Installation Kit Part Number 392-41230-001 .................................................... 16
FIGURE 11 - Scroll Chiller Panel Installation ..........................................................................................................17
FIGURE 12 - SC-EQ Installed in YMAA and YVAE ................................................................................................. 18
FIGURE 13 - SC-EQ Installed in YCAE ..................................................................................................................18
FIGURE 14 - SC-EQ Installed in YCWE-E .............................................................................................................. 18
FIGURE 15 - SC-EQ Connected in YMAA, YVAE, AND YCWE ..............................................................................18
FIGURE 16 - SC-EQ Connected in YCAE AND YCWE-E ....................................................................................... 18
FIGURE 17 - SC-EQ to YMAA, YCAE, and YCWE Connections ............................................................................19
FIGURE 18 - SC-EQ Installed in YVWE and YVWH ...............................................................................................20
FIGURE 19 - SC-EQ to YVWE and YVWH Connections ........................................................................................20
FIGURE 20 - SC-EQ Installed in YEWS and YGWE Single ....................................................................................21
FIGURE 21 - SC-EQ Installed in YEWS Tandem .................................................................................................... 21
FIGURE 22 - SC-EQ Installed in YGWE Tandem ...................................................................................................21
FIGURE 23 - SC-EQ to YEWS Connections ........................................................................................................... 21
FIGURE 24 - Mounting on the Equipment ............................................................................................................... 22
FIGURE 25 - Wall Mounting ....................................................................................................................................23
FIGURE 26 - SC-EQ in Enclosure...........................................................................................................................23
FIGURE 27 - SC-EQ Component Locations ...........................................................................................................24
FIGURE 28 - Micropanel Rotary Switch .................................................................................................................. 25
FIGURE 29 - SC-EQ Comm Card to YORKTalk II Equipment Connections ........................................................... 26
FIGURE 30 - SC-EQ COMM Card to YORKTalk II Equipment Connections .......................................................... 27
FIGURE 31 - SC-EQ Comm Card to YORKTalk II Equipment Connections ........................................................... 28
FIGURE 32 - SC-EQ COMM Card to OptiView Equipment Connections ................................................................29
FIGURE 33 - SC-EQ COMM Card Connections for Chillers with the 02478 Microboard
YCAV/YCIV/YVAA/YVWA .................................................................................................................. 30
FIGURE 34 - SC-EQ COMM Card Connections for Chillers with the 03478 Microboard
YCAV/YCIV/YVAA/YVWA/YVFA ........................................................................................................ 30
FIGURE 35 - SC-EQ COMM Card Connections for Chillers with the 02550 Microboard
YCAL/YCUL/YLAA/YLPA/YCWL/YCRL/YSAA .................................................................................. 31
FIGURE 36 - SC-EQ COMM Card Connections to YPAL (EC02) ........................................................................... 31
FIGURE 37 - SC-EQ COMM Card Connections to YEWS-D1/YEAS/YGAS ..........................................................32
FIGURE 38 - SC-EQ LEDs and USB ......................................................................................................................33
FIGURE 39 - BAS Bus Meter Checks .....................................................................................................................35
FIGURE 40 - Din Rail End Block ............................................................................................................................. 37
FIGURE 41 - SC-AP Mounted ................................................................................................................................. 37
FIGURE 42 - SC-AP Velcro Pads ............................................................................................................................37
FIGURE 43 - SC-EQ to SC-AP CABLE ................................................................................................................... 38
FIGURE 44 - SC-AP Cable Ty-Wraps ..................................................................................................................... 38
FIGURE 45 - SC-AP & SC-EQ Installed .................................................................................................................. 38
FIGURE 46 - SC-AP Device List .............................................................................................................................39
FIGURE 47 - SC-EQ Port Status and Lock In ......................................................................................................... 39
FIGURE 48 - SC-AP Device List ............................................................................................................................40
FIGURE 49 - Device Instance Mode ......................................................................................................................40
FIGURE 50 - Invalid Points ofine .......................................................................................................................... 40
FIGURE 51 - Unreliable Remote Setpoints ............................................................................................................. 40
FIGURE 52 - No Chiller Model Type Detected ........................................................................................................ 41
6
JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
LIST OF FIGURES (CONT'D)
FIGURE 53 - Manually Selecting Chiller Model.......................................................................................................41
FIGURE 54 - LON ProtoNode Front View .............................................................................................................. 45
FIGURE 55 - OptiView LON ProtoNode Mounting Location ...................................................................................46
FIGURE 56 - ProtoNode to SC-EQ RS485 Wiring .................................................................................................. 47
FIGURE 57 - ProtoNode Power Wiring ...................................................................................................................47
FIGURE 58 - ProtoNode LON Network Connection ................................................................................................48
FIGURE 59 - ProtoNode Service Pin (Cover Removed) .........................................................................................48
FIGURE 60 - ProtoNode Neuron ID ........................................................................................................................48
FIGURE 61 - ProtoNode Power Wiring ...................................................................................................................49
LIST OF TABLES
TABLE 1 - SC-EQ Product Code Numbers ...............................................................................................................9
TABLE 2 - YORK Equipment Models ...................................................................................................................... 13
TABLE 3 - OptiView Wiring - SC-EQ Port J7 ..........................................................................................................15
TABLE 4 - BAS Wiring - SC-EQ Port J12 ...............................................................................................................15
TABLE 5 - BOM of YMAA SC-EQ Kit (371W06163-001) ........................................................................................ 18
TABLE 6 - BOM of YCAE SC-EQ Kit (371W06163-002) ........................................................................................ 18
TABLE 7 - BOM of YCWE-E SC-EQ Kit (371W08244-301) ...................................................................................18
TABLE 8 - Technical Specifications ........................................................................................................................ 43
TABLE 9 - LON ProtoNode Product Code Numbers ..............................................................................................46
TABLE 10 - Jumper Settings ...................................................................................................................................46
TABLE 11 - Switch Settings ....................................................................................................................................46
TABLE 12 - Power Connections .............................................................................................................................47
TABLE 13 - Diagnostic LEDs .................................................................................................................................. 49
TABLE 14 - Technical Specifications ...................................................................................................................... 50
JOHNSON CONTROLS
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JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
SECTION 1 - INTRODUCTION
OVERVIEW
The SC-EQUIP (SC-EQ) Communication Card supersedes the E-Link Gateway and provides BAS network
connectivity for Johnson Controls® and YORK® mechanical equipment, such as chillers and rooftop units.
It is designed with four active serial ports: The J12
BAS (RS-485) port, the J7 Equipment (RS-232) port,
the J8 Equipment (RS-485) port and the J11 CS port
which allows equipment data to be sent to the Johnson
Controls Remote Operation Center for remote chiller
monitoring and diagnostics.
To simplify the installation and setup, the SC-EQ
Comm Card automatically determines the BAS protocol and Baud rate and the model of the connected chiller or rooftop unit. The only user setting is the MAC
address for the SC-EQ on the BAS network.
Several SC-EQ Comm Card models are available
for connection to various types of input voltage and
equipment. For chillers using the OptiView™ 02430 or
03630 microboards, the SC-EQ Comm Card consists
of a single circuit board attached to four studs inside
the Micro Panel, using the accessory mounting kit. The
microboard supplies 12 VDC input power, eliminating
the need for an external power supply. The SC-EQ plug
J10-COM needs a ground wire to ground the lug on the
panel.
TABLE 1 - SC-EQ PRODUCT CODE NUMBERS
PRODUCT
DESCRIPTION
SC-EQ with Serial Outputs (BACnet
MS/TP, Modbus Remote Terminal Unit
[RTU], and N2)
SC-EQ with Serial Outputs in
Enclosure
SC-EQ OptiView Panel Installation Kit 331-03607-000
SC-EQ Screw Chiller Panel Installation
Kit
SC-EQ Scroll Chiller Panel Installation
Kit
SC-EQ YEWS Panel Installation Kit 371W06953-132
SC-EQ YGWE Tandem Panel
Installation Kit
SC-EQ YGWE Single Panel
Installation Kit
SC-EQ YVWE, YVWH, and YGWH
Panel Installation Kit
SC-EQ YMAA Panel Installation Kit 371W06163-001
SC-EQ YCAE Panel Installation Kit 371W06163-002
CODE
NUMBERS
SE-SCC1001-1
(031-03610-000)
YK-SCCPNL-0
392-41228-000
392-41230-001
392W41228-020
392W41228-030
39241228-010
(IPU3 BD)
The SC-EQ kit includes the SC-EQ board and the re-
lated installation accessories. The OptiVew kit does not
include the SC-EQ board.
1
For screw compressor chillers using the 02478 or 03478
microboards, the SC-EQ Comm Card is installed inside
the Micro Panel, using the accessory mounting kit. The
microboard supplies 12 VDC input power, eliminating
the need for an external power supply.
For scroll compressor chillers using the 02050 or 02550
microboards, the SC-EQ Comm Card is installed inside the Micro Panel and requires an additional transformer to supply power to the SC-EQ Comm Card. The
transformer is included in the SC-EQ Scroll Chiller Installation Kit.
For other types of chillers, the SC-EQ Comm Card is
packaged in its own enclosure. In addition to the SCEQ circuit board, a transformer is included inside the
enclosure that converts a 120 VAC or 240 VAC input
to 24 VAC power.
JOHNSON CONTROLS
9
SECTION 1 - INTRODUCTION
EMISSIONS COMPLIANCE
FORM 450.50-N1
ISSUE DATE: 08/19/2019
United States
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when this equipment is operated in a commercial
environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may
cause harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the
user is required to correct the interference at his/her
own expense.
Canada
This Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la Classe (A) respecte toutes
les exigences du Règlement sur le matériel brouilleur
du Canada.
10
JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
SECTION 2 - INSTALLATION
The SC-EQ is supplied as a circuit board that can be
installed directly into the equipment’s enclosure, or can
be supplied pre-mounted in an enclosure ready for line
voltage. Accessory mounting kits are used to mount the
SC-EQ Comm Card directly into OptiView, Latitude,
and IPU-II based Micro Panels.
IMPORTANT: Do not install the SC-EQ Comm Card
directly into an equipment’s enclosure without the use
of an approved installation kit.
WIRING
Risk of Electric Shock. Disconnect
or isolate all power supplies before making electrical connections.
More than one disconnect or isolation may be required to completely
de-energize equipment. Contact with
components carrying hazardous voltage
can cause electric shock and may result
in severe personal injury or death.
Risk of Property Damage. Do not apply
power to the system before checking all
wiring connections. Short circuited or
improperly connected wires may result
in permanent damage to the equipment.
IMPORTANT: Make all wiring connections in accordance with local, national, and regional regulations.
Install the wiring so it does not cause a hazard, and
is protected against electrical and mechanical damage.
to the SC-EQ Comm Card. For the line voltage power
source, use a dedicated line (with a separate fuse) that
is isolated (using a control transformer) from other
equipment in the plant room that may generate Elec-
tromagnetic Interference (EMI).
Grounding
For the enclosure style, a ground wire must be connect-
ed directly to the enclosure supply power ground lug at
the point of entry. A label (Figure 1 on page 11) iden-
tifies this grounding point. This ground wire should be
connected through a continuous ground circuit to the
incoming ground at the source transformer.
GRD
LD20000
FIGURE 1 - GROUNDING LABEL
Besides providing safety protection, the
ground connection plays an extremely
important part in the operation of the
communication circuitry.
Risk of Electric Shock. Ground the
SC-EQ Enclosure according to local, national, and regional regulations. Failure
to ground the SC-EQ Enclosure may result in electric shock and severe personal
injury or death.
PROTECTION OF COMMUNICATION PORTS
2
Power
The SC-EQ circuit board is powered from either a 12
VDC, or a 24 VAC, Class 2 power source. When used
with an OptiView chiller, the Micro Panel supplies
low-voltage power via a power harness supplied by the
OptiView installation kit. If the SC-EQ circuit board
is installed in its own enclosure, a transformer is included in the enclosure. Line voltage may be supplied
using an external power source, or drawn from the input voltage terminal strip inside the chiller panel. Be
sure the capacity of the power conductors supplying
the equipment is rated for the additional power (VA)
required by the SC-EQ Comm Card. Use a wire that
is one size larger than required for the amperage draw
(maximum 400 mA) to connect the line voltage feed
JOHNSON CONTROLS
When using RS-485 technology, it is possible that elec-
trical disturbances, such as voltage spikes, can damage
a circuit board. The SC-EQ Comm Card includes reset-
table fuses and other devices on each RS-485 port to pro-
tect against damaging electrical spikes and stray voltage.
The equipment panel should also be equipped with pro-
tection against electrical disturbances. Whereas OptiView
Micro Panels are equipped with onboard tranzorbs, other
equipment panels may require the addition of an external
board. Refer to the equipment documentation for details.
The BAS Port J12 of the SC-EQ Comm Card is also elec-
trically isolated, providing a means of mitigating common
mode voltage induced problems.
11
SECTION 2 - INSTALLATION
FORM 450.50-N1
ISSUE DATE: 08/19/2019
HIGH NOISE ENVIRONMENTS
Electrical equipment that employs high speed switching
circuits (Variable Speed Drives [VSD], Solid State Starters [SSS], and computing equipment) generates Electromagnetic Interference (EMI) noise and Radio Frequency
Interference (RFI), which can generate transient voltage
between ground points in the communication wiring.
The RS-485 circuitry is designed to withstand some low
transient voltage, but if this difference exceeds certain
limits, it can permanently damage the RS-485 circuitry.
Ensure that the Micro Panel and the
SC-EQ Comm Card are powered from a
source with a true earth ground.
IMPORTANT: Do not run communication cables in
close proximity to, or parallel with, high-voltage power cables (maintain at least 457.2 mm [18 in.] of separation, or use a grounded metal conduit).
ELECTRICAL NOISE MITIGATION TO EQUIPMENT
The likelihood of transient voltage is greatly reduced
if the SC-EQ Comm Card is close-coupled to the Micro Panel. Close-coupling requires that the SC-EQ Enclosure and Micro Panel share the same line voltage
power source and are physically close to one another.
Typically, the SC-EQ Enclosure is mounted on the Micro Panel enclosure. This scenario ensures a short communication cable, which is usually protected entirely
within the two enclosures.
ELECTRICAL NOISE MITIGATION SC-EQ TO BAS
When the SC-EQ is used in an electrically hostile environment (for example, with VSD-enabled equipment),
a double-shielded cable should be used to help mitigate the adverse effects electrical noise can have on the
system. The double-shielded cable should connect the
SC-EQ’s BAS port (J12) to the next controller(s) in the
daisy-chained network.
The outer shield of the double-shielded cable should be
grounded directly at the low noise end (the end most
distant from the VSD), and ideally, indirectly through
an appropriate capacitor at the high noise end (the end
closest to the VSD). If a capacitor is not available, the
outer shield may be left unconnected, or tied directly
to ground. The best results on the site determine the
specific termination strategy employed.
The inner shield of the double-shielded cable should be
grounded directly at the low noise end (the end most
distant from the VSD), and left open at the high noise
end (the end closest to the VSD).
TYPES OF COMMUNICATION PORTS
The SC-EQ Comm Card uses two electrical communication protocols to connect to other devices: RS-485
which is used for multi-drop networking, and RS-232
is primarily used for point-to-point connectivity.
RS-485
The RS-485 standard uses three conductors to connect network nodes: two signal wires and a third called
COM which is the reference. The SC-EQ Comm Card
uses either a third wire for the reference or the building’s infrastructure. The wiring method depends on
the port being used: an electrically isolated RS-485
BAS Port J12 typically uses a third wire, whereas the
RS-485 Equipment Port J8 and the RS-485 Connected Services Port J11 normally use chassis or building
ground for the reference.
For BAS systems that use a 2-wire RS-485
network, connect a 100 ohm 1W resistor
between SC-EQ J12 COM and J10 COM
with a wire that then runs to Ground in
the panel. (see Figures 4 and 5)
RS-232
The RS-232 Standard also uses three conductors to
connect network nodes: two signal wires and a third
called COM which is the reference. RS-232 is more
susceptible to noise interference than RS-485 so proper
shielding and wire routing is essential for proper operation. The RS-232 Standard limits the cable run to a
maximum of 50 feet. The OptiView panels use RS-232
to communicate with the SC-EQ.
NETWORK TERMINATION
Terminate all End-of-Line (EOL) devices at each end
of the RS-485 bus (that connect to only one set of
RS-485 network wires). EOL termination provides biasing of the network, and assists in returning the signal
to a normal state in the event of voltage transients. If
the SC-EQ Comm Card happens to be an end-of-line
device on the Building Automation System network,
terminate the network by setting the BAS EOL switch
S2 to ON.
12
JOHNSON CONTROLS
FORM 450.50-N1
BAS Port J12
Not Terminated
Terminated
ISSUE DATE: 08/19/2019
1O
N
RS485
Port EOL
1O
N
RS485
Port EOL
LD20001
FIGURE 2 - RS-485 EOL SWITCHES
IMPORTANT: Ensure that the EOL switches are not
set to the ON position for controllers that are not at the
end of the BAS RS-485 network.
MEDIA ACCESS CONTROL (MAC) ADDRESS
The SC-EQ Comm Card’s network hardware address
is set on a single 8-way DIP switch. Switch 8 is not
used. The switches are binary weighted allowing the
setting of addresses from 1 to 127. The address must
be provided by the BAS contractor. If an address is not
provided at chiller commissioning, leave the MAC address set to 0 (all switches OFF) and leave a copy of
the last page of this manual taped on the chiller panel
for the controls contractor. The last page explains how
to set the MAC address. The SC-EQ automatically determines what BAS protocol is present and what chiller
is connected except older Yorktalk2 chillers requires
that the chiller model manually be set using an SC-AP
as explained in the SC-AP section of this manual. This
should eliminate the need for a chiller technician to
have to return to site after the chiller has been commissioned just to set the BAS Network MAC Address.
IMPORTANT: The SC-EQ Comm Card is intended
to provide an input to equipment under normal operating conditions. Use this SC-EQ Comm Card only as an
operating control. Where failure or malfunction of the
SC-EQ Comm Card could lead to personal injury or
property damage to the controlled equipment or other
property, additional precautions must be designed into
the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety
or limit controls, intended to warn of or protect against
failure or malfunction of the SC-EQ Comm Card.
SECTION 2 - INSTALLATION
TABLE 2 - YORK EQUIPMENT MODELS
MICROBOARD
NUMBER
031-02550
031-02050
031-01095
031-02478
031-03478
031-01065
031-02430
031-03630
331-02496
025W43786-022
(XS09
Display BD)
025W43786-025
(XS09
Display BD)
025W43786-079
(XS09
Display BD)
331W03325-107
331W03325-106
331W03325-110
(IPU3 BD)
331W03325-101
331W03325-104
331W03325-105
331W03325-109
1
SC-EQ/
INSTALL KIT
392-41230-001
KIT includes
SC-EQ
YK-SCCPNL-0
N/A
392-41228-000
KIT includes
SC-EQ
YK-SCCPNL-0
N/A
031-03610-000
331-03607-000
YK-SCCPNL-0
N/A
031-03610-000
371W06953-132
031-03610-000
371W06953-132
031-03610-000
392W41228-020
031-03610-000
392W41228-030
031-03610-000
392W41228-010
031-03610-000
392W41228-010
031-03610-000
371W06163-001
031-03610-000
371W06163-002
031-03610-000
371W06163-002
031-03610-000
371W06163-002
EQUIPMENT
YCWL, YCUL, YCAL,
YLAA, YCRL, YLPA,
YSAA
YCAS, YCWS, YCRS
YVWA,YVAA, YCIV,
YCAV, YVFA
YIA, YPC, YG, YB
YK, YT, YS, YR, YST,
YD, YKEP, YMC
YK, YT, YS, YR, YST,
YD, YKEP, YMC
YPAL
YEWS Single,
YEWS250-E Tandem
YEWS Tandem
YGWE Single
YGWE Tandem
YVWE
YVWH, YGWH
YMAA, YMPA,
YVAE-X
YCAE130C,
YCAE130D
YCAE130XH
YCAE-X,
YCAE-G (Tier2)
MODEL
2
2
2
JOHNSON CONTROLS
1. Installing technician must verify board number in unit prior to
installation.
2. Software edition of YEWS-D1 (RHSYEWSD1) V1.08 or later),
YEAS (RHMASB V1.06 or later), YGAS (RHMYGAS V1.03 or
later) are supported.
3. Models with Native communications do not require a SC-EQ or
SC-AP when only connecting to a BAS and Connected Services
is NOT installed.
4. OM and Competitive Retrot available in future release 3.
13
SECTION 2 - INSTALLATION
BAS NETWORK WIRING
FORM 450.50-N1
ISSUE DATE: 08/19/2019
BAS SYSTEM
-
COM
SHLD
+
SC-EQ #1 SC-EQ #2 SC-EQ #3
SHLD
-
COM
+
SHLD
-
COM
+
SHLD
COM
+
Ground
Screw
LD29264
FIGURE 3 - 3-WIRE BAS
NOTES:
1. The shield terminal on the SC-EQ is not connected to ground. It provides a convenient place to connect shields in two daisy chain segments.
2. Do not set the EOL switch ON if the unit is not at the end of the segments.
3. Set the EOL switch to ON for the right end of the unit.
4. Ground only one end of the shielded cable.
BAS SYSTEM
-
SHLD
+
SC-EQ #1 SC-EQ #2
-
SHLD
COM
+
SHLD
COM
+
Ground
Screw
FIGURE 4 - 2-WIRE BAS
NOTES:
1. Set the EOL switch to ON for the right end of the unit.
2. Ground only one end of the shielded cable.
24 VAC
J10
FIGURE 5 - 100 OHM RESISTOR INSTALLATION
NOTES:
1. Ground all SC-EGs.
2. Only 2-wire BAS need 100 Ohm resistor.
100Ω
1W
100Ω
1W
See Figure 5See Figure 5
-
SHLD
COM
+
J12
100Ω
Resistor
LD29328
LD29326
14
JOHNSON CONTROLS
FORM 450.50-N1
ISSUE DATE: 08/19/2019
MOUNTING
Risk of Electric Shock. Disconnect or
isolate all power supplies before making
electrical connections. More than one
disconnect or isolation may be required to
completely de-energize equipment. Contact with components carrying hazardous
voltage can cause electric shock and may
result in severe personal injury or death.
OPTIVIEW PANEL INSTALLATION
1. Attach the SC-EQ Comm Card board to the
studs provided inside the chiller enclosure (Fig-
ure 6 on page 15 or Figure 7 on page 15),
using the four screws and washers provided in the
OptiView/Latitude installation kit.
2. Connect the appropriate communications cable (included with the kit) based on the SC-EQ
mounting location, from Port J7 (RS-232) on the
SC-EQ Comm Card to J2 on the OptiView Micro
Panel. Ensure that wires are connected according
to Table 3 on page 15.
3. Check for stray wire strands, which could cause
short circuits, and ensure all components are
secure.
4. Connect the BAS network to J12 (RS-485) on the
SC-EQ board.
For BAS systems with 2-wire RS-485 network cables remember to install the 100
ohm resistor as shown in Figures 4 and 5.
5. Connect the appropriate length power harness (included with the kit) from J9 on the SC-EQ Comm
Card to J21 on the Optiview Micro Panel (see Fig-
ure 8 on page 16).
SECTION 2 - INSTALLATION
SC-EQ Comm Card
U35
U38
Washer
Screw
OptiView
Micro
Panel
LD19583
FIGURE 6 - SC-EQ INSTALLED IN OPTIVIEW (ALL CHILLERS EXCEPT YMC2)
SC-EQ Gateway
371-05568-xxx
371-06985-xxx
Panel
SC-EQ Gateway
371-05619-xxx
371-06698-xxx
371-06986-xxx
Panel
Washer
Screw
OptiView
Micro Panel
Screw
U3
5
U38
Washer
U38
5
3
U
LD19582a
FIGURE 7 - SC-EQ INSTALLED IN YMC2 OPTIVIEW
2
6. Set the desired BAS network address for the SCEQ using the SW-1 MAC Address Switches.
When the SC-EQ and the OptiView panel are powered up, the SC-EQ automatically sets itself to
the BAS protocol, baud rate and chiller model.
This may take up to 120 seconds.
TABLE 3 - OPTIVIEW WIRING - SC-EQ PORT J7
SC-EQ PORT J7 OPTIVIEW PORT J2 WIRE COLOR
RX GTX Black
TX GRX Red
REF N/A Shield/Drain
JOHNSON CONTROLS
TABLE 4 - BAS WIRING - SC-EQ PORT J12
SC-EQ PORT J12 BAS WIRE COLOR
+ + White
- - Blue
REF REF Black
When replacing an E-Link with a SCEQ, the BAS wiring MUST be changed
since the plug terminal locations are not
the same!
15
SECTION 2 - INSTALLATION
Power Harness
(OptiView)
4 Position
Connector
Communication Cable
(OptiView / Latitude)
4 #8 Nylon
Washers
(OptiView /
Lattitude)
3/8 in. Screw
8 x32
(OptiView)
Primary
Power
Wiring
Harness
FORM 450.50-N1
ISSUE DATE: 08/19/2019
Primary
120 VAC
Secondary
24 VAC
24 VAC
Power
Transformer
YMC2 Power
Harness (OptiView)
4 Position
Connector
YMC2 Communication
Cable (OptiView)
100 OHM
Resistor
LD20002
FIGURE 8 - SC-EQ OPTIVIEW INSTALLATION KIT (ALL CHILLERS) (YORK P/N 331-03607-000)
Power Harness
(Latitude)
2 Position
Connector
4 Position
Resister
Connector
Communication
Wiring Harness
100 OHM
Tie
Wrap
Secondary
Power Wiring
100 OHM
Resister
Tie
Wrap
Sheet
Metal
Screw
Harness
Expansion
Nut
Communication
Wiring Harness
Expansion
Nut Screw
LD20004
FIGURE 10 - SC-EQ SCROLL CHILLER INSTALLATION KIT PART NUMBER 392-41230-001
SMALL TONNAGE PANEL INSTALLATION
1. Attach the SC-EQ Comm Card board to the panel
in the upper right side of the enclosure using the
four expansion screws and nuts provided in the
IPU-II Panel Installation Kit (see Figure 11 on
page 17).
Sheet
Metal
Screw
Expansion
Nut
Expansion
Nut Screw
LD20003
FIGURE 9 - SC-EQ SCREW CHILLER INSTALLATION KIT PART NUMBER 392-41228-000
16
2. Attach the 24 VAC transformer to the panel to the
left of the SC-EQ board using two screws (Figure
10 on page 16).
3. Connect the communications cable (included
with the kit) between the SC-EQ board J8 (RS-
485) and the IPU-II Micro board TB1.
4. Connect the transformer to the terminal block.
5. Connect the transformer to SC-EQ J10 and secure
the wiring with tie-wraps.
6. For RS-485 2-wire operation, connect a 100 ohm
1W resistor between SC-EQ J12 COM and J10
COM with a wire then run to Ground in the panel.
(see Figure 4 on page 14 and Figure 5 on page
14)
JOHNSON CONTROLS
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