Communication Configurations
8 CNT-SVX11A-EN
Integrated Comfort System
Note: The Tracer ZN524 controller
may only be used with Tracer
Summit version 11.0 or greater
with a Comm5 communications
card.
Water-source heat pumps can operate
as part of a large building automation
system controlled by Tracer Summit.
The Tracer ZN524 is linked directly to
the Tracer Summit via a twisted pair
communication wire. Each Tracer
Summit building automation system
can connect to a maximum of 120
Tracer ZN524 controllers.
Communications link wire
The ICS system allows for complete
communication with the water-source
heat pumps via Tracer ZN524 unit con-
troller. All points connected to the
Tracer ZN524 may be observed from
the Tracer Summit front-end controller.
The Tracer Summit can also initiate an
alarm on a loss of performance or
equipment malfunctions.
The ICS system also allows all of the
water-source heat pumps to share infor-
mation without the presence of hard-
wired sensors at each unit. Some typi-
cal shared points include outside air
temperature, entering water tempera-
ture, and occupancy schedules.
Peer-to-Peer Communications
On a peer-to-peer communication sys-
tem, multiple Tracer ZN524 controllers
may share data, via a twisted pair com-
munication wire, without the need for a
Tracer Summit system. (See Figure 5:
“Peer-to-peer communication connec-
tions”)
Peer-to-peer communications allows
features such as master/slave opera-
tion, in which multiple units operate off
of a single zone sensor. This is typically
seen in large spaces requiring multiple
units.
The Rover service tool is required to set
up peer-to-peer communications.
Figure 4: Communications link wire
Figure 5: Peer-to-peer communication connections
Twisted pair wire used in
installation of controller in
water-source heat pump
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