Prodigy M2 Unit Controller Description - Lennox Prodigy M2 Application Manual

1. Prodigy M2 Unit Controller Description

The M2 Unit Controller provides all rooftop unit control functions to insure its safe and reliable operation. It also provides
status and diagnostic information to facilitate troubleshooting. The controller's programmable parameters allow adjustment
of time delays and setpoints that enable advanced features.
The default configuration requires a standard room thermostat or direct digital controller (DDC). By changing a single pa-
rameter, the M2 can also control the unit from a zone sensor. The M2 Unit Controller can also be configured as a network
controller when daisy−chained to the L Connection® Network. To simplify configuration, the M2 may be connected to a PC
which has been loaded with Unit Controller software.
1.1. Add−on boards
Add−on boards connect to the main board to build variations according to application or equipment type.
Packaged Unit
Box
Size
Models
LCH/LGH 036−060 S A
LCH/LGH 036−060 H A
LCH/LGH 072 H A+
LCH/LGH 092−150 H/S B
LCH/LGH 156 H C
LCH/LGH 180 H C
LCH/LGH 210 H C
LCH/LGH 240/300 S C
LCH/LGH 420−600 H/S E
Figure 1 shows the M2 integrated modular controller components and the location of the add−on boards.
CONTROL
BOARD
EXPANSION
PORT
USB CONNECTION
(for Unit Controller
software)
L CONNECTION ( optional
connection method for Unit
Controller software)
Figure 1. M2 Unit Controller and Expansion Board Locations
506457−01 05/10
A55 A59
M2 Unit C2, #3 & 4 Com-
Controller pressor Board
X
X
X
X
X X
X X
X X
X X
X X
X = required; O = optional: * only CAV Bypass supported, no VFD drives.
CONTROL
BOARD
EXPANSION
PORT
ECONOMIZER POTS
AND DIP SWITCHES
1.
A169 A133 VAV
MCB1 Motor GP1 Variably Air
Control Board Volume Board
X O*
X
O*
O*
O*
O*
O*
O*
O
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Prodigy M2 Unit Controller Description
A133 MGV A133 GP
GP1 Modulating GP1 General Pur-
Gas Valve Board pose I/O Board
O
2 AMP FUSE
O
O
O
O
O
O
O
O
O