Lennox PRODIGY M2 User Manual

18. Networking The Controllers
Page 88
506457−01 05/10
18. Networking The Controllers
A network control panel (NCP) and NCP PC software can be used to schedule building operation for any M2 on the same
daisy−chained l connection network.
The network thermostat controller (NTC) is an L connection direct digital controller used on units which are not equipped with
an M2. The Building Controller (BC) is used to control building functions such as lights and signs. Use L connection specific
network cable and daisy chain as shown in figure 35.
Up to 31 controllers can be daisy chained on a single L connection network. Any combination of M2, M1, NTC, and BC
controller can be used (see figure 34).
Network
Manager
NCP
NON M2
BASED HVAC
Up to 31
Controllers
PC CONVERTER
PHONE MODEM
ETHERNET
CONVERTER
PC
Phone
LAN
M1M2
Signs
Fans
Lights
BC
NTC
Figure 34. L Connection Network
SYS BUS TERMINAL
BLOCK ON LENNOX
CONTROLLERS IMC
(M1−1 TO M1−6 L
SERIES)
S−BUS TERMINAL
BLOCK ON LENNOX
PRODIGY M2 CON-
TROLLER ENER-
GENCE SERIES
SYS BUS TERMINAL
BLOCK ON LENNOX
CONTROLLERS IMC (M1−7,
M1−8, NTC, BC AND ZONE
CONTROLLERS)
DO NOT CONNECT THE CABLE SHIELD TO THE "G" TERMINAL ON M1−6 AND OLDER
CONNECT + TERMINAL OF NCP TO + TERMINALS ON ALL CONTROLLERS.
CONNECT − TERMINAL OF NCP TO − TERMINALS ON ALL CONTROLLERS.
3
2
1
SHIELD
SHIELD
SHIELD
− S + − S +
− G +
SHIELD
Cable type − twisted pair
with shield, 22 awg mini-
mum, Belden #88761 or
#8761 (Lennox 27M19,
94L63, 68M25).
CONTINUE WIRING TYP.
TO LAST CONTROLLER
ON NETWORK
Figure 35. L Connection® Network Daisy−chain Communication Wiring

Lennox PRODIGY M2 Specifications

General

Brand	Lennox
Model	PRODIGY M2
Category	Controller
Language	English