7
General Information
The ZN510 controller is a
microprocessor-based direct digital
controller that controls a variety of
water source heat pump equipment
including:
z
Standard efficiency horizontal
and vertical units up to 10 tons.
z
High efficiency horizontal and
vertical units.
z
Console water source heat
pumps.
ZN510 is designed to provide
accurate and reliable zone
temperature control by using
custom proportional integral (PI)
algorithms. The controller is factory
installed and configured to support:
z
Single fan speed.
z
Up to two compressors.
z
Reversing valve.
z
2-position outdoor air damper
or generic binary output.
Peer-to-peer communication across
controllers is possible even when a
building automation system is not
present. ZN510 is also adaptable as
a standalone system.
Communication
The ZN510 controller communicates
via Trane’s Comm5 protocol.
Typically, a communication link is
applied between unit controllers and
a building automation system.
Communication is also possible
with Trane’s service tool
Rover
™
.
ZN510 provides a total of six 1/4-inch
quick-connect terminals for
connection to the Comm5
communication link. These
connections include:
z
Two terminals (TB2-1, TB2-2)
are provided for direct con-
nection of Rover
to the ZN510
Board or provided as spare ter-
minals.
z
Two terminals (TB2-3, TB2-4)
are connected to the field
terminal strip (1TB1-14,
1TB1-16) for connection to the
communication link (daisy
chain).
z
Two terminals (TB2-5, TB2-6)
are connected to the field
terminal strip (1TB1-5, 1TB1-6)
which should be connected to
the zone sensor communication
jack. This provides direct
connect of Rover to the commu-
nication link without having to
connect directly to the ZN510
board or provided as spare ter-
minals.
z
The field terminal strip 1TB1
provides screw terminations for
all field connections.
Figure 2: Communication connections
COMM
COMM
COMM
TB2
-1
TB2
-2
TB2
-3
TB2
-4
TB2
-5
TB2
-6
Zone
Sensor
Communication
Link
Space
Communication
Connection
1T
B
1
-14
1T
B
1
-16
1T
B
1
-5
1T
B
1
-6
20 pole low voltage
terminal strip screw
connections for
field hook-up
Figure 3: Communication Wiring
Unit Operation
