Johnson Controls York Smart Equipment SC-EQ, Руководство по установке

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JOHNSON CONTROLS
17
SECTION 2 - INSTALLATION
FORM 450.50-N1
ISSUE DATE: 08/19/2019
2
7. Connect the communications cable shielded
ground to the ground screw.
8. Set the desired BAS network address for the SC-
EQ using the SW-1 MAC Address Switches.
When the SC-EQ and the control panel are powered
up, the SC-EQ automatically sets itself to the BAS pro-
tocol, baud rate and chiller model. This may take up to
120 seconds.
Primary Power
Wiring Harness
SC-EQ
Sheet
Metal
Screw
Expansion
Nut
Expansion
Nut Screw
The Resister is used for BAS
RS485 2 Wire Connection.
Connect one end of the
Resistor to the COM of TB5
(24 VAC) and the other to
Port 1 COM.
Use this resistor only if the BAS
wiring utilizes a 2 Wire
communication trunk
Terminal block location
for YCAL-C, YCWL,
and YCUL-C.
Transformer
Secondary
Ground
Secondary
Power
Wiring
Harness Tie
Wrap
Communication Wiring Harness:
Connect to Micro Board
TB1 as Follows:
Wire Color / Terminal
Red / +
Black / -
TB1 RS485
SHLD REF - +
TB2
TB5
Com
Ground
Resistor
Communication
Wiring Harness
TB1
MicroBoard
TB5
TB5
TB2
24 VAC
Transformer
Terminal Block Location
For YCAL-D, YCAL-E, and YLAA.
LD20005
FIGURE 11 - SCROLL CHILLER PANEL INSTALLATION
YMAA, YCAE, AND YCWE-E PANEL
INSTALLATION
To install the panel on YMAA, YCAE, or YCWE-E
chillers, complete the following steps:
1. Install the SC-EQ to the bracket using plastic sup-
port. Attach the bracket to the studs provided in-
side the chiller enclosure. See Figure 12 , Figure
13
, or
Figure 14.
2. Install the 12 VDC switch power supply to the
bracket using M3 screws. Attach the bracket to
the studs provided inside the chiller enclosure.
This step is only for YCAE and YCWE chillers.
See Figure 13 or Figure 14 .
3. Connect the appropriate communications cable
based on the SC-EQ mounting location, from Port
J8 (RS-485) on the SC-EQ to CON205 on the
YMAA, YCAE, or YCWE control board. Ensure
that wires are correct. See Figure 15 , Figure 16 ,
or Figure 17
4. Check for stray wire strands, which could cause
short circuits. Ensure all components are secure.
5. Connect the BAS network to J12 (RS-485) on the
SC-EQ board.
6. Connect the appropriate length of power har-
ness from J9 on the SC-EQ to XTB2, as shown
in Figure 15, or to 12 VDC switch power supply,
as shown in Figure 16 . The power harness is in-
cluded in the kit.
7. Set the required BAS network address for the SC-
EQ using the SW-1 MAC address switches.
When the SC-EQ and the control board are powered
up, the SC-EQ automatically sets itself to the BAS pro-
tocol, baud rate, and chiller model. This may take up
to 120 s.