LAARS M4-LHS - Installation Manual User Manual
M4-lhs, Hybrid multi-boiler control, Installation and operation manual
Document 4232
Modulating and Condensing /
Non-condensing Boiler control
M4-LHS
Hybrid Multi-Boiler Control
HTC# 059295-00
A
WarNiNg
FOR YOUR SAFETY: This product must be installed and serviced by
a professional service technician, qualified in hot water heater/boiler
controls installation and maintenance. This manual is intended for
anyone who will install, operate or maintain the control system. Before
you begin installation and operation of this control, it is important that
you thoroughly review this manual. Improper installation and operation
could result in damage to equipment and possibly even personal
injury. Laars Controls are not intended for use as operation safety limit
controls. Another control, that is intended and certified as a high limit
control, must be in the water heater/boiler control circuit.
installation and Operation Manual
Document Outline
- Hybrid Logic Overview
- Modulating Logic Overview
- Outdoor Reset Concept
- Control Layout
- Extension Layout
- Features
- Installation
- Mounting the Enclosure
- Install the Sensors
- Wiring
- Wiring the Power
- Wiring the Sensors
- Wiring the Shutdown, Tstat, or Setback
- Wiring the Prove
- Wiring the Indirect Domestic Hot Water (DHW) Call
- Wiring the System Output
- Wiring the Boilers
- Wiring Boiler Activation or On/Off Staging Boilers
- Wiring Multi-Stage Boilers
- Wiring to Modulating Boilers
- Wiring the 4-20mA Modulating Boilers
- Wiring Voltage Modulating Boilers
- Connecting to the Extensions and 4-20mA EMS Interface
- Connecting to BACnet Interface Module
- Activate the Battery
- HYBRID Startup Menu
- Modulating Startup Menu
- Startup Settings
- Program Change Switch Setting
- Startup Sequence
- Boiler Type
- Sensor Type
- EMS Input Mode
- EMS 4mA and 20mA Set Points
- HYBRID Startup Settings
- Switch Set Point
- Switch Differential
- Switch Delay
- Heavy Load Sequence 2nd Group
- Condensing and Non-Condensing Boiler Type
- Condensing and Non-Condensing Boiler Number
- HYBRID Modulating Boiler Settings
- HYBRID Staging Boiler Settings
- Modulating Boiler Settings
- Startup Settings (Continued)
- Setting the Control to Factory Defaults
- Program Change Switch Setting
- BACnet MSTP Communication Menu
- Operating Settings
- HYBRID Operating Menu
- Modulating Operating Menu
- Boiler Stage Menu
- Troubleshooting
- Specifications
- Hybrid - Outdoor Reset - BACnet Variable list
- Modulation - Outdoor Reset - BACnet Variable list
- Modulation - Set Point - BACnet Variable list
- BACnet PICS Statement
- Piping and Wiring Diagrams