LAARS M4-Ext - Installation Manual - Manual (Page 3)

Page 3 LAARS Modulating Controls M4 & M4-EXT
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN PROGRAM
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 22 20 19 21 24 23 29 25 27 26 28 32 30 31
L N
- + + T T O O RS-485 mA GND VLT
SYS A B C D PWR
CUR / VLT
A
- + +
mA GND VLT
- + +
mA GND VLT
- + +
mA GND VLT
+
mA
TEMP
OUTDOOR
O O
TEMP
SYSTEM EXTENSION
MODULE CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
CLASS 1 WIRE ONLY.
--- ---
PROVE
/DHW SHUTDOWN
/SETBACK
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
CAUTION : RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
SYSTEM
A
B
C
D
1 2
RUN PROGRAM
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 20 19 21 24 23 29 25 27 26 28 32 30 31
L N
- + + T T O O RS-485 mA GND VLT
SYS A B C D PWR
CUR / VLT
A
- + +
mA GND VLT
- + +
mA GND VLT
+ +
mA
22
-
GND VLT
+
mA
TEMP
OUTDOOR
O O
TEMP
SYSTEM EXTENSION
MODULE CUR / VLT
B
CUR / VLT
C
CUR / VLT
D PROVE
/DHW
SHUTDOWN
/SETBACK
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
CLASS 1 WIRE ONLY.
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
LISTED
99RA
CAUTION : RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
M4
FULL MODULATION SEQUENCING
The digital display shows the system status, set point,
lead stage <in brackets>, and status of each stage.
To view and adjust settings, press the appropriate buttons.
120VAC Power
Four N.O. Boiler startup relay
outputs. Each is wired in series
with each boiler's limit circuit.
System Output controls
pumps, valves, or other
system components. Four modulation outputs can be 0-10V,
0-5V, 2-10V, 1-5V, or 4-20ma. Go to
Startup Menu to determine the type of
output for each stage.
LED indicates the
associated relay status.
Buttons function is presented on
Bottom Row of display.
When connecting Outdoor and System
Sensors, no Polarity is observed.
Prove terminals must be connected
for M4 to operate boilers.
Connect Extension panels to
add additional stages using
a 6 pin phone line only (cable
provided with M4-Extension).
Program Switch to restrict access to
function changes. This switch is
covered with Wiring Enclosure.
M4 LAYOUT