C155: 6 Zone CPU - Install Guide




The C155 module provides the main processor and communication for the C210 six zone control and integrated iZone control



Zone ports:

Connect the RJ12 cables from the damper motors here. Start at zone 1 and connect sequential ports. i.e. 1,2,3,4.....etc

Transformer connection:

Connect the iZone transformer here. Part number CT24ACM

C155 pairing button:

The pair button can be used to pair the iZone Wi-Fi bridges (COCB)

AC unit module connector:

When used for integrated AC / Zone control an AC module is connected to the C155. This module is a C325. Each different brand of AC unit has its own unique C325 module

RF antenna:

433Mhz antenna is screwed on here. This is used for communication with an iZone Wi-Fi bridges COCB

AC unit control cable connection:

Connect the shielded, 2 core cable from the AC unit to the C155 here. This is a spring loaded wire terminal

1 x RJ 45 Port:

The RJ45 port is used for connecting the CAT 5E cables from the C155 to the Nite controller



Supply air temperature sensor port

The C155 does not have a port for the CDTS, it does not have temperature sensing




Model numbers


Power supply

24VAC 50Hz

Casing material

Fire retardant ABS plastic

Power connection

iZone transformer CT24ACM

Operating Temperature

Up to 65oC

Communications protocols

Wireless 433Mhz (iZone proprietary protocol)

Number of zones

0 to 6 (RJ12 connectors)

O/A Dimensions

Height (Without Antenna)   32 mm

Height (With Antenna vertical) 124mm

Width    119 mm

Length  100 mm


150 g