47
Installing the System Piping
3.7.6 Wiring Diagram - the Navien Sma
The Navien Smart Zone + controller may be used with NCB-H boilers to operate a heating system with more than
3 zones.
When Navien boilers are used with a Navien Sm zone pump controller, an RS-485 data communication
link is established through the Ready-link connection. This allows the controller and the boiler to share
operational information and to control the zones more efficiently by minimizing unnecessary pump operation.
The communication link also provides an optimal control environment for *freeze protection.
SUPPLY
TEMPERATURE SENSOR
RETURN
OUTDOOR
T/S_ZONE3
R
W
C
T/S_ZONE2
R
W
C
T/S_ZONE1
R
W
C
AC24VN
AC24VL
lLWCO
R
W
C
T/S_Recir
COM
NO
NC
ZONE_V/V3
COM
NO
NC
ZONE_V/V2
COM
NO
NC
ZONE_V/V1
Navien
Smartzone
Zone Pump Controller
+
Navien Ready-Link Cable
Refer to the user manual that is supplied with the Navien Sm zone pump controller for details.
Note
●
The Navien Zone Controller setting must be enabled when using the Ready-Link cable for
communication. Refer to “11.5.2 Setting the Space Heating Operation” on page 107 for details.
* Add more Freeze Protection operation information on page 24.
Содержание NCB-190/060H
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