LAARS M4-Ext - Installation Manual - Manual (Page 2)

Page 2 LAARS Heating Systems
M4 LAYOUT . . . . . . . . . . . . . . . . . 3
M4 OVERVIEW . . . . . . . . . . . . . . . 4
UNDERSTANDING OPERATION CONCEPT 5
Reset Ratio/Outdoor Reset . . . . . . . . . . 5
INITIAL PILOT PROGRAM . . . . . . . . . 6
Making Sure You Have the Right Control . 6
Selecting the System Features. . . . . . . 6
INSTALLATION . . . . . . . . . . . . . . . 7
Mounting the Enclosure . . . . . . . . . . 7
Install the Sensors . . . . . . . . . . . . . 8
Heating System Sensor (HSS) Installation. . . 8
Outdoor Sensor Installation . . . . . . . . . . 8
Wiring. . . . . . . . . . . . . . . . . . . . 9
Wiring the Power (Terminals 1, 2) . . . . . . . 9
Wiring the Sensors . . . . . . . . . . . . . . . 9
Wiring the Shutdown (Terminals 31, 32) . . . . 9
Wiring the System Prove (Terminals 29, 30) 10
Wiring the Domestic Hot Water Call DHW
(Terminals 29, 30) . . . . . . . . . . . . . . 10
Wiring the System Output (Terminals 3, 4). . 10
Wiring the Boilers . . . . . . . . . . . . . . 10
Wiring to Modulating Motors . . . . . . . . . 11
Connecting to the M4-Extension Panels . . . 11
MENU SEQUENCE . . . . . . . . . . . . . 12
Startup Settings . . . . . . . . . . . . . . 14
Program Change Settings . . . . . . . . . . 14
Startup Sequence . . . . . . . . . . . . . . 14
Sensor Type . . . . . . . . . . . . . . . . . 14
EMS Input Mode (Available in Set Point Only) 14
Selecting the Output Type . . . . . . . . . . 14
Selecting the Modulating Mode . . . . . . . 15
Prove/Domestic Hot Water (DHW) . . . . . . 15
Setback Mode . . . . . . . . . . . . . . . . 15
Boost Mode . . . . . . . . . . . . . . . . . 15
Sensor Fault . . . . . . . . . . . . . . . . . 15
Operating Settings . . . . . . . . . . . . . 16
Program Change Settings . . . . . . . . . . 16
Season . . . . . . . . . . . . . . . . . . . . 16
Set Point . . . . . . . . . . . . . . . . . . . 16
Reset Ratio. . . . . . . . . . . . . . . . . . 16
Outdoor Cutoff Temperature . . . . . . . . . 17
Offset . . . . . . . . . . . . . . . . . . . . . 17
Minimum Water Temp . . . . . . . . . . . . 17
Maximum Water Temp . . . . . . . . . . . . 18
System Settings . . . . . . . . . . . . . . 18
Gain . . . . . . . . . . . . . . . . . . . . . 18
Lead Boiler Rotation . . . . . . . . . . . . . 18
Purge Delay . . . . . . . . . . . . . . . . . 19
Lag Delay . . . . . . . . . . . . . . . . . . 19
Standby Time. . . . . . . . . . . . . . . . . 19
System Run-On . . . . . . . . . . . . . . . 19
Setback. . . . . . . . . . . . . . . . . . . . 20
Last Stage Hold . . . . . . . . . . . . . . . 20
Day/Night Schedules . . . . . . . . . . . . . 21
Set Time . . . . . . . . . . . . . . . . . . . 21
History . . . . . . . . . . . . . . . . . . . 21
Maintenance . . . . . . . . . . . . . . . . 22
System & Outdoor Sensor Trim . . . . . . . 22
Soft-Off Delay . . . . . . . . . . . . . . . . 22
Output Trim. . . . . . . . . . . . . . . . . . 22
Configuration . . . . . . . . . . . . . . . . . 23
Display . . . . . . . . . . . . . . . . . . . 23
Display Boiler Modulation Status. . . . . . . 23
Display Messages . . . . . . . . . . . . . . 23
Boiler Stage Settings . . . . . . . . . . . . 24
Mode . . . . . . . . . . . . . . . . . . . . . 24
Ignition %. . . . . . . . . . . . . . . . . . . 25
Modulation Start % . . . . . . . . . . . . . . 25
Copy Settings - Boiler A Only . . . . . . . . 25
TROUBLESHOOTING . . . . . . . . . . . . 26
SPECIFICATIONS . . . . . . . . . . . . . . 28
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