LAARS S8Ext - Installation Manual - Manual (Page 3)

Page 3 LAARS Sequencing Controls S8 & S8EXT
Connect to Extension panels to
add additional stages or connect
to X-SIG Interface for
external 4-20mA set point.
When connecting Temperature Sensors, no
Polarity is observed. Prove terminals
must be connected for S8 to
operate stages.
Button function is presented on
bottom row of the display.
LEDs indicate
associated relay’s status
Program Switch to restrict access
to function changes. This Switch is
covered with Enclosure Wiring Cover.
System Output controls pumps,
valves, or other system components.
DHW Pump and Comb. Air relays are
controlled when configured.
Output Relays to manage the stages.
SYSTEM
DHW PUMP
INPUT RATINGS:
115VAC 60Hz, 12VA MAX
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
L N
1 2
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
SYS=
144
F OD=
35
F
DE GH JK
HI LO -- OFF
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 36
STAGE MENU
Stage E
Stage F
Stage G
Stage H
Stage A
Stage B
Stage C
Stage D
25 26
PRESS
+ -
37 38
PROVE
SYSTEM
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE, 1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
COMB. AIR
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
C US
S8
SEQUENCING CONTROL
S8 LAYOUT