Trane Tracer, ZN510 User Manual

WSHP-IOP-2 May 1998

Installation, Operation, and Programming

Tracer™ ZN510 Controller

Literature History

The Trane Company has a policy of continuous product improvement and it reserves the right to change specifications and design without notice.

Installation, Operation, and Programming

Library Service Literature

Product Section Unitary

Product Water-Source Heat Pumps

Model 000

Literature Type

Sequence 1

Date April 1998

File No. SL-UN-000-WSHP-IOP-2-0498

Supersedes New

Related Literature

z CNT-IOP-1 ZN510 1 Controller:

Installation, Operation, and Programing

z WSHP-PD-1 Water-Source Heat

Pump Controller Product Data Sheet

WSHP-IOP-2

Installation, Operation, and Programming

z WMCA-PD-1 ZN510 Loop Con-

troller Product Data sheet

z WSHP-IOP-3 ZN510 Water-

Source Heat Pump Controller Installation, Operation, and Programming Guide

z WMCA-IOP-1 ZN510 Controller

Installation, Operation, and Programming Guide

Start-up Procedure 4 Power-up Sequence 5 Unit Identification Tag 6 Unit Operation 7

General Information 7 Communication 7 Power 8 Binary Outputs 8 Analog Outputs 9 Binary Inputs 9 Analog Inputs 12

Zone Sensors 15 Heating or Cooling Control

Mode Operation Single or Dual Compressor

Operation Data Sharing 20 Configuration 21 Troubleshooting 22 Diagnostics 27 ZN510 Controller Replacement 28 Wiring Diagram 29 Hardware Specifications 31 Appendix 33

Start-up Procedure

Installation of New Units

1. Follow all instruction for

installation of water source heat pumps as detailed in the IOM (Installation Operation Maintenance manual).

2. Disconnect power or disable

the circuit breaker to unit.

3. Run communication link wire to

field terminal strips 14 and 16. (See wiring diagram in the unit).

4. Install zone sensor to low

voltage control terminals 1 through 6. (See wiring diagram in the unit and zone sensor submittals).

Zone Sensor Placement

Zone sensor location is an important element of effective room control and comfort.

The best sensor location is typically on a wall, remote from the Readings at this location assure that the desired setpoint is achieved across the space, not just near the unit itself. It may be necessary to subdivide the zone with multiple units to ensure adequate control and comfort.

HVAC unit.

5. Verify that water connections

have been made to unit, then ensure that water is circulating through the unit.

6. Reapply power.

7. Check for STATUS GREEN LED

operation to ensure power and communication has been made

to the ZN510

Peel IDENTIFICATION TAG from unit and place in the ZN510 IOP, on a copy of Sheet 6 of this document, or on building plans for future location use. The actual room location on the tag may be hand written.

The following are typical areas where the zone sensor should not be mounted:

z Near drafts or “dead spots”

(e.g., behind doors or corners)

z Near hot or cold air ducts

z Near radiant heat (e.g., heat

emitted from appliances or the sun)

z Near concealed pipes or

chimneys

z On outside walls or other non-

conditioned surfaces

™

z In air flows from adjacent zones

or other units

Power Up Sequence

When 24 VAC power initially is applied to the ZN510 controller, the following sequence occurs:

1. All outputs are controlled off.

2. The controller reads all inputs

to determine their initial values.

Note: Because the space temperature can be hardwired to the controller or communicated, the controller waits for several minutes to check for the presence of a communicated value.

3. A random start time is hard

coded on every board and cannot be disabled. The board generates a random time delay between 0 and 25 seconds. Once this time expires, the power up control wait time (if configured) will wait for 120 seconds. The power up control wait allows ample time for a communicated request to arrive. If the power up control wait time expires, and the controller does not receive a communicated occupancy command, the unit assumes stand alone operation.

4. Normal operation begins.

Unit Identification Tag

The unit identification tag is factory mounted and provided for easy identification of an installed unit. It contains model number, tagging, and location information. See Figure 1.

The top portion of the unit identification tag remains permanently affixed to the unit for identity purposes. The bottom portion of the tag provides pertinent information that is removable to be placed on building plans or in the ZN510 IOP on page 33. This provides identification history about the unit’s location for quick reference.

These tags provide information about unit location, unit serial number, and NID (neuron identification number). The NID is similar to the serial number of the unit but is specific to the identification of the ZN510 Board. The location identification is a customer defined, clear English description, of the unit’s physical location. This is a 27 character description of the location. For example, if the location identification for a unit is “Conference Room 101”, the ZN510 and Rover (the Trane Comm 5 service tool) will recognize this clear English description so maintenance can be performed on the appropriate unit. If location identification is not defined, it will default to the unit serial number. This provides some information so the user has multiple references to the unit. The blank location is provided for field modification in case the unit is moved from the initial location.

Unit Identification Tag

Figure 1: Unit Identification Tag

Note: Fold and tear carefully along dashed

removable line.

Unit Operation

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.

Figure 2: Communication connections

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)

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.

are provided for direct connection of Rover to the ZN510 Board or provided as spare terminals.

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 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.

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 communication link without having to connect directly to the ZN510 board or provided as spare terminals.

z The field terminal strip 1TB1

provides screw terminations for all field connections.

TB2-1

COMM COMM COMM

Space Communication Connection

20 pole low voltage terminal strip screw connections for field hook-up

Figure 3: Communication Wiring

TB2-2

TB2-3

1TB1-14

Communication Link

1TB1-16

TB2-4

TB2-5

TB2-6

1TB1-5

1TB1-6

Zone Sensor

Unit Operation

Power

The ZN510 controller is powered by 24

VAC. A total of two 1/4-inch quick-

connect terminals are provided for 24 VAC connection to the board. See

Figure 4 for ZN510 power requirement.

Note: Power for field installed ancillary devices is not available from the board. It must be tapped at transformer. See Table 21 for excess power available.

Binary Outputs

The ZN510 uses five of its binary outputs to control heat pump units. Outputs are load side switching triacs. The triac acts as a switch by either making or breaking the circuit between the load (reversing valve, damper, contactor, relay) and ground.

See Figure 5 for the configuration of the five binary outputs.

Factory Supplied Transformer

Line

Vol tage

24VAC

Figure 4: Power Connections

Field installed 2 position damper actuator

24VAC

1TB1-17

1TB1-18

2-Position Damper Actuator or Generic Binary Output

Binary output 6 (BOP 6) is factory configured to control a normally closed 2-position outdoor air damper. It may be field modified to control a generic output for control by a building automation system. If set up as a generic output, the controller does not use BOP 6 as part of the normal control. A building automation system must issue commands to control the generic binary output.

Note:

z During occupied mode, the

outdoor air damper is closed when the fan is controlled off.

z During unoccupied mode, the

outdoor air damper normally remains closed.

z 2-position damper must not

exceed 10 VA power output from board.

Figure 5: Binary outputs

BOP 1 (Fan)

BOP 2 (Reversing Valve)

J1-1

J1-2

BOP 4 (Not Used)

J1-4

BOP 5 (Compressor 1)

J1-5

BOP 3 (Not available)

J1-3

Binary Outputs

Table 1: BOP 6 control of a 2-position outdoor air damper

Model Fan Operation Outdoor Air Damper

Occupied

Occupied warm up or cool down

Occupied standby On or cycling Closed

Unoccupied Cycling Closed

Diagnostic present Diagnostic dependent Closed

On or cycling Off

On or cycling Closed

Open Closed

BOP 6 (Compressor 2)

J1-6

BOP 7

J1-7

Unit Operation

Output Overrides

The ZN510 controller includes a manual output test function. Use this feature to manually exercise the outputs in a defined sequence. The purpose of the test sequence, is to verify output and end device operation. Use the manual output test to:

z Verify output wiring and

operation without using Trane’s service tool, Rover.

Analog Outputs

Binary Inputs

The ZN510 controller has three available binary inputs (BI). These inputs are factory-configured for the following functions:

z BI 1= Low temperature

detection (freezestat) (Circuit 2).

z BI 2 = Condensate overflow.

z BI 3 = Occupancy or generic

binary input.

Each binary input may be configured as not used depending on options selected. BI 3 is configured as a normally open occupancy input, but may be field modified for generic binary input which is only supported by a building automation system.

Note: The diagnostic functions related to binary inputs such as low temperature detection and condensate

overflow are fixed sequences.

Each binary input associates an input signal of 0 VAC with open contacts and 24 VAC with closed contacts. See Figure 6 for typical binary input configurations for the heat pump.

z Force compressor operation,

allowing the technician to use refrigerant gauges or other test equipment to verify unit operation.

The test sequence resets unit diagnostics and attempts to restore normal unit operation prior to testing the outputs. If the diagnostics remains after a reset, the status LED indicates the diagnostic condition is still present and has affected the

ZN510 does not use analog outputs.

Low Temperature Detection (Circuit 2)

Condensate Overflow

Field Wired Occupancy Input

J2-1

BI 1

J2-2

J2-3

BI 2BI 3

J2-4

J2-5

J2-6

Figure 6: Binary inputs.

Table 2: Binary input configurations

Binary Input Description

BI 1

BI 2 Condensate Overflow

BI 3

Low Temperature Detection (Cir 2)

Occupancy Normally open Unoccupied Occupied

Generic Normally open Normal Normal

manual output test. See Troubleshooting section for Green LED and Testing Heat Pump Configurations on page 21 & 22.

Binary Inputs

ConfigurationContact

Closure

Normally closed

Normal Diagnostic

Contact

Open

Note: See Page 10 for specific information concerning BI 1, BI 2 and BI 3.

Unit Operation

Low Temperature Detection

The low temperature detection

temperature condition exists for that circuit.

outdoor air damper also operates

normally. diagnostic protects the heat exchanger by using an analog leaving water temperature sensor to protect refrigerant circuit 1 and a binary low temperature detection device to protect refrigerant circuit

2. Each individual refrigerant circuit is disabled when the low

For two compressor units, the controller responds to low temperature detection by allowing the fan to operate, while disabling the compressor for the faulty circuit. The compressor for the normal circuit continues to operate. The

All unit operation is disabled when

the heat pump shuts down both

circuits, due to low temperature

conditions. See Table 3 for more

information.

Table 3: ZN510 response to low temperature detection diagnostic

Description

Low Temperature Detection

(Circuit 1)

Low Temperature Detection

(Circuit 2)

Low Temperature Detection

(Circuits 1 and 2)

Fan

Operation

Enabled

Disabled

Compressor Operation

Circuit 1-Disabled Circuit 2-Normal Operation

Circuit 1-Normal Operation Circuit 2-Disabled

Circuit 1-Disabled Circuit 2-Disabled

Damper

Operation

Normal operation

Closed

Note:

z The low temperature detection device automatically resets when the heat exchanger temperature returns to

normal. However, you must manually reset the low temperature detection diagnostic to clear the diagnostic and restart the unit. Refer to page 28 on how to reset a unit.

z If BOP 6 is configured as a generic binary output, the state of the output is not affected by the low temperature

detection diagnostic or by other diagnostics.

Condensate Overflow

A condensate overflow switch detects the condensate condition. The condensate overflow switch is a normally closed device. This switch is physically connected to the binary input 2 (BI 2). When the condensation reaches the trip point, the binary input detects the diagnostic condition. A condensate overflow signal generates a diagnostic which disables the fan, disables all compressors, and closes the 2-position outdoor air damper (when present). The condensate overflow diagnostic does not affect the generic binary output (when present).

Note: The condensate overflow switch, located in the condensate pan, automatically resets when the condensation returns to normal levels. However, you must manually reset the controller’s condensate overflow diagnostic to clear the diagnostic and restart the unit. Refer to page 28 on how to reset a unit.

Occupancy

ZN510 uses the occupancy binary input for two occupancy-related functions. For standalone controllers (any unit not receiving a communicated occupancy request, typically from a building automation

system), the occupancy binary input

determines the unit’s occupancy

based on the hardwired signal.

Typically, the signal is a dry set of

binary contacts which is either

connected to a switch or timeclock

contacts.

When a hardwired occupancy signal

is open, the unit switches to

occupied mode (if the occupancy

input is configured as normally

open). When a hardwired

occupancy signal is closed, the

controller switches to Unoccupied

mode.

Unit Operation

In Occupied mode, the controller operates according to the occupied setpoints. In Occupied Standby Mode, the unit controller operates according to the Occupied Standby setpoints. When the controller receives a communicated unoccupied request, the controller

Table 4: Normally open hardwired input configuration (BI 3)

Description Communicated Request Hardwired State Result

Standalone NA Open = Occupied Occupied

Standalone NA Closed = Unoccupied Unoccupied

Communicating Occupied Open = Occupied Occupied

Communicating Unoccupied Open = Occupied Unoccupied

Communicating Occupied Standby Open = Occupied Occupied Standby

Communicating Occupied Closed = Occupied Standby Occupied Standby

Communicating Unoccupied Closed = Occupied Standby Unoccupied

Communicating Occupied Standby Closed = Occupied Standby Occupied Standby

Note: If configured for normally closed, all states are opposite of Table 4.

operates according to the unoccupied setpoints regardless of the state of the hardwired occupancy input.

If neither the binary input nor the communicated input is used to select the occupancy mode, the

controller defaults to occupied mode because the occupancy binary input (if present) typically is configured as normally open without an occupancy device connected.

Generic Binary Input

Building automation systems can monitor the status of the generic binary input. This input does not affect controller operation.

High and Low Pressure Switches

The high and low pressure cutout switches are wired in series with the compressor contactor in the unit. The ZN510 controller detects the state of each switch circuit by monitoring the controller’s compressor triac outputs. If either the high pressure switch (HPC) or the low pressure switch (LPC) switch opens, a fault condition occurs. This open circuit prevents the

compressor contactor from energizing keeping the compressor from running. The controller automatically detects the fault condition by measuring the compressor triac output signal.

By default, when the HPC or LPC switches detect a high or low pressure condition in the refrigerant circuit, the special input detects the diagnostic and disables all compressor operation for that circuit. The unit fan continues to operate, if only one circuit is disabled in a two compressor unit. When the HPC/LPC diagnostic is present on both circuits, the ZN510 shuts off the unit fan and disables

unit operation. See Figure 7 for high

and low pressure switch.

When the refrigerant circuit returns

to normal, the HPC and the LPC

switches automatically reset. The

high or low pressure cutout

diagnostic may need to be manually

reset to clear the diagnostic and

enable compressor operation for the

fault circuit.

24 VAC

Unit Operation

Compr 2

HPC LPC

Figure 7: High and low pressure switch

Note: The ZN510 controller includes an automatic diagnostic reset function that allows the controller to automatically recover after a high or low pressure cutout diagnostic. After 30 minutes the controller will reset the diagnostics. Most diagnostics occur due to intermittent water temperature or flow problem. The “smart reset” may eliminate many service calls.

Analog Inputs

The ZN510 controller has five available analog inputs (AI). These inputs are factory-configured for the following functions:

Compr 1

Binary Outputs

12 456 73

z Zone = Space temperature.

z Set = Local setpoint.

z Fan = Fan mode input.

z AI 1 = Leaving water tem-

perature (Circuit 1).

z AI 2 = Discharge air tem-

perature.

See Figure 8 for analog inputs.

Zone

J3-4

J3-3

J3-2

Analog Inputs

Zone Sensor

TB3-3

TB3-2

TB3-1

Ground

(1TB1-1)

(1TB1-2)

TB3-4

Fan

Setpoint

(1TB1-3)

(1TB1-4)

TB3-5

J3-1

Figure 8: Analog inputs.

Discharge Air Sensor

AI 2

Leaving Water

AI 1

Sensor (Circuit)

Unit Operation

Space Temperature

ZN510 controls the space temperature according to the active space temperature, the active heating/cooling setpoint, and the space temperature control algorithm. The ZN510 controller receives the space temperature from either a wired zone sensor or as a communicated value. When neither a zone sensor nor communicated space temperature is present, the ZN510 controller generates a space temperature failure diagnostic.

Note: The ZN510 controller cannot operate without a valid space temperature value (either hardwired or communicated).

The space temperature input can communicate timed override

CANCEL requests to the ZN510

controller. If the ON button is temporarily pressed, the zone sensor sends a signal to the controller. This signal is then interpreted as a timer override request which places the unit into occupied.

The controller uses the timed override request (while the zone is unoccupied) as a request to switch to the Occupied Bypass mode (occupied bypass). This Occupied Bypass mode lasts for the duration of the occupied bypass time, typically 120 minutes. or The controller’s Occupancy mode is determined from either a system level controller or another peer controller.

CANCEL button cancels the timed

The override request and returned the unit to unoccupied mode. If the

CANCEL button is temporarily

ON or

pressed, the zone sensor sends a signal to the controller. This signal is then interpreted as a timed override cancel which places the unit into unoccupied.

Local Setpoint

The local setpoint analog input is designed as the local (hardwired) setpoint input. This input cannot be used for any other function. The local input is a resistance input intended for use with Trane zone sensors.

If neither a hardwired nor communicated setpoint is present, the controller uses the stored default setpoints:

z Occupied setpoints:

In the occupied mode, the unit attempts to maintain the space temperature at the active occupied heating or cooling setpoint based on the measured space temperature, the active setpoint, and the proportional/ integral control algorithm.

z Occupied standby setpoints:

In occupied standby mode, the controller uses the occupied standby cooling and heating setpoints. Because the occupied standby setpoints typically cover a wider range than the occupied setpoints, the ZN510 controller reduces the demand for heating and cooling the space. Also, the outdoor air damper is normally closed during occupied standby mode to further reduce the heating and cooling demands.

z Unoccupied setpoints:

In unoccupied mode, the unit attempts to maintain the space temperature at the stored unoccupied heating or cooling setpoint based on the measured

space temperature, the active setpoint, and the proportional/ integral control algorithm, regardless of the presence of a hardwired or communicated setpoint.

Once a valid setpoint is established

(through the hardwired input or

through communication) and when

neither a local setpoint or

communicated setpoint is present,

the controller generates a setpoint

failure diagnostic.

When a setpoint failure diagnostic

occurs, the controller operates using

the default heating and cooling

setpoints. These setpoints are

factory-configured, but may be

changed using the Trane service

tool, Rover.

The ZN510 controller uses the

following validation sequence for

the setpoints:

1. Check for a communicated

setpoint. If present, validate this setpoint.

2. Check for a hardwired setpoint

and validate the setpoint.

3. Use the default setpoint and

validate this setpoint.

Fan Mode Input

The fan mode analog input (Fan) is

designed to operate as the fan mode

switch input. This input cannot be

used for any other function. The fan

switch on a Trane zone sensor

generates the fan mode signal.

The ZN510 controller detects the

unique resistance corresponding to

each position of the fan switch. By

measuring the resistance, the

controller determines the requested

fan mode.

Unit Operation

Possible Fan Modes

OFF Fan Off

AUTO

Heat Pump (1-speed)

Continuous: (Field Modified)

z In occupied mode, the

fan runs continuously. In unoccupied mode, the fan cycles when no heating or cooling is required.

Cycling: (Factory Default)

z The fan cycles

OFF with compressor

operation.

OFF

ON and

The ZN510 controller receives the fan mode from either a wired zone sensor or as a communicated valve. When neither a zone sensor nor communicated fan mode are present, the ZN510 controller will default unit operation to

AUTO.

Note:

z A building automation system

can also generate a fan mode request and communicate this request to the controller.

z If the ZN510 controller does not

receive a hardwired or communicated request for the fan mode, the unit recognizes the fan input as

AUTO and the fan

operates according to the default configuration.

Fan Off Delay

When the heating output is controlled off, the ZN510 automatically runs the fan

ON for an

additional 30 seconds to give the fan time to blow off any residual heat.

Leaving Water Temperature

ZN510 uses analog input 1 (AI 1) as the leaving water temperature input for use with a thermistor. This input (AI 1) is automatically assigned as a leaving water temperature input. As explained in the binary input section, the leaving water temperature input protects the heat exchanger (circuit 1) from low temperatures. The second heat exchanger, present in units with two compressors is protected with a binary low temperature detection device. Based on the application of the unit, circuit operation is terminated when the leaving water temperature falls below 35 F or 20 F. This is set when the unit is ordered.

The ZN510 controller compares the measured leaving water temperature to the leaving water temperature low limit value to determine a fault condition. When the measured leaving water temperature is less than the leaving water temperature low limit, the controller generates a Low Temp Detect diagnostic. If the Leaving Water Temp Sensor fails to open or close the controller generates a Leaving Water Temp Failure diagnostic. This disables unit operation.

Note: A low temperature detection failure diagnostic for compressor 1 may require you to manually reset the unit to restore compressor operation.

Similarly, the ZN510 controller uses a binary low temperature detection device (fixed low limit trip point) to lock-out circuit 2 when a fault condition is detected.

See the Diagnostics section on page 28 for information about the automatic diagnostic reset function.

Filter Maintenance Timer

The controller’s filter maintenance timer is based on the unit fan’s cumulative run hours. The controller compares the fan run time against an adjustable fan run hours limit (maintenance required setpoint time, stored in the controller) and recommends unit maintenance (i.e. changing the filter).

Use Rover or BAS system to edit the maintenance required setpoint time. Once the setpoint limit is exceeded the controller generates a filter maintenance timer diagnostic. When the maintenance required setpoint time is zero, the controller disables the diagnostic feature.

Discharge Air Temperature

Analog input 2 (AI 2) is used as the discharge air temperature input for use with a 10,000 ohm thermistor. Typical factory placement of the thermistor is at the discharge area of the unit. The discharge air temperature sensor does not affect unit operation. The measured temperature is for information only to be read by the building automation system or for troubleshooting unit operation with Rover.

Once a valid discharge air temperature signal has been established by the thermistor or communicated and the value is no longer present, the controller generates a discharge air temperature failure diagnostic. This will not disable unit operation. If the sensor returns with a valid temperature, the diagnostic automatically clears

Zone Sensor

The ZN510 controller accepts the following zone sensor inputs:

z Space temperature mea-

surement.

z Local setpoint (internal or

external on the zone sensor).

z Fan switch. (Optional)

z Timed override (ON and CANCEL).

z Communication Jack.

If both hardwired and communicated space temperature

Table 5: Methods of setpoint operation.

Method Situation used

Zone Sensor (with an adjustable hardwired setpoint)

Communicated source

Stored default setpoints

A hardwired, adjustable setpoint is connected to the controller. Local setpoints are enabled in the unit configuration. No communicated setpoint is present.

A setpoint is communicated to the unit controller (typically from a building automation system or a peer controller). If both a hardwired setpoint and a communicated setpoint exist, the controller uses the communicated value. The configuration feature for enabling or disabling the local setpoint does not affect the setpoint handling when communicated setpoints are used. The communicated setpoint always takes priority over the hardwired setpoint, even when the local setpoint is enabled.

The controller uses the locally stored default heating and cooling setpoints when neither a local hardwired setpoint or communicated setpoint is present. When a building automation system is present, the controller uses the default setpoints when no setpoint is communicated to the controller and no hardwired setpoint exists. The controller uses stored default setpoints when only a local setpoint exists, but the local setpoint is disabled in the configuration of the controller. The controller always uses the stored default (unoccupied) setpoints in unoccupied mode.

values exist, the controller ignores the hardwired space temperature input and uses the communicated value.

Internal and External Setpoint Adjustment

Zone sensors with an internal or external setpoint adjustment provide the ZN510 controller with a local setpoint (50 to 85 F or 10 to 29.4 C). The internal setpoint adjustment is concealed under the zone sensor’s cover. To reveal the adjustable setpoint wheel, remove the zone sensor cover. The external setpoint

(when present) is exposed on the

zone sensor’s front cover.

When the hardwired setpoint

adjustment is used to determine the

setpoints, all unit setpoints are

calculated based on the hardwired

setpoint values, the configured

setpoints, and the active mode of

the controller.

Setpoint Operation

The controller has three methods of

heating and cooling setpoints

operation. See Table 5 for the

methods of setpoint operation.

Zone Sensor

Zone Sensor Features Fan Switch (Optional)

The zone sensor fan switch provides the controller with an occupied (and occupied standby) fan request signal

OFF or AUTO. If the fan control

of request is communicated to the controller, the controller ignores the hardwired fan switch input and uses the communicated value. The zone sensor fan switch signal can be enabled or disabled through configuration in the ZN510 controller.

ON or CANCEL Buttons

Momentarily pressing the ON button

Table 6: Zone Sensor Options

Part Number: X13510628010 Description:

z Space temperature (0.2 C

resolution).

z Internal setpoint. z Communication jack. z Vertical case with Trane logo

during unoccupied mode places the controller in occupied bypass mode for 120 minutes. You can adjust the number of minutes in the unit controller configuration using Trane’s service tool, Rover. The controller remains in occupied standby mode until the override timer expires or until the

CANCEL

button is pressed.

Communication Jack

Use the RJ-11 communication jack as the connection point from Rover to the communication link (when the communication jack is wired to the communication link at the

ADJUSTABLE SETP OINT

COMMUNICATIONS

MJ1

JACK

controller). By accessing the communication jack via Rover, entrance to all controllers on the link may be gained.

RT1 10K OHM @

R7 1K

25 °C ± 2°C

VR1

SIGNAL (COMMON)

200

COMM HIGH (+ )

COMM LOW (-)

ZONE

CSP

Part Number: X13510606010 Description:

z Space temperature (0.2 C

resolution).

z External setpoint. z Communication jack. z Vertical case with Trane logo

ADJUSTABLE SETP OINT

COMMUNICATIONS

MJ1

JACK

R7 1K

RT1 10K OHM @ 25 °C ± 2°C

VR1

200

ZONE

SIGNAL (COMMON)

CSP

COMM HIGH (+ )

COMM LOW (-)

Zone Sensor Specifications

Part Number: X13510606020 Description:

z Space temperature (0.2 C

resolution).

z External setpoint. z

ON and CANCEL buttons.

z Communication jack. z Vertical case with Trane

logo.

Part Number: X135 10635010 Description:

z Space temperature (0.2 C

resolution).

z External setpoint. z Fan Switch (

AUTO).

z ON and z Communication jack. z Vertical case with Trane

logo.

OFF and

CANCEL buttons.

Heating or Cooling Control Mode Operation

Heating or Cooling Operation

For both single and dual compressor operation, the ZN510 controller

unit capacity and pulse width modulation (PWM) logic along with minimum on/off timers to determine

the operation for compressor 1. cycles the compressor(s) on and off to meet heating or cooling zone demands. The controller uses the

With a dual compressor unit, if the

desired conditions are not met by

Table 7: Heat pump heating or cooling operation*

Unit

Single compressor

Dual (Two) compressors

Compressor continuously.

Both compressors

OFF continuously.

OFF

Compressor output is controlled according to pulse width modulation (PWM) logic between 0 and 100%. The controller calculates the compressor on/off times based on PWM logic and heating/cooling capacities. The compressor is controlled on for longer periods as the capacity increases and shorter periods as the capacity decreases.

ON PWM.

#1: #2:

OFF continuously.

*Note: No diagnostics present.

Certain heat pump configurations may use one or two compressors for cooling control. Heat pumps use reversing valve control to switch

simultaneously de-energizing the

reversing valve. The reversing valve

only changes state when the

controller turns on compressor 1. between heating and cooling. The controller supports cooling only configurations and heat pump configurations.

When a power failure occurs, the

reversing valve output defaults to

the heating (de-energized) state. To

reduce noise due to refrigeration For heat pump configurations, the unit’s reversing valve is energized in cooling and de-energized in heating. For cooling, the reversing valve output is energized simultaneously with the compressor (compressor 1 in two compressor applications).

migration after compressor

shutdown, the controller does not

immediately operate the reversing

valve. The reversing valve changes

state only when the compressor

controls on, except when the

controller is in off mode. The reversing valve remains energized until the controller turns on the compressor for heating,

For cooling only configurations, no

reversing valve is present and the

Between

0 and 50%

Capacity

#1: #2:

controlling only the first compressor, the controller runs compressor 1 continuously and controls compressor 2 according to PWM logic along with the minimum on/off timers. See Table 6 for heat pump heating or cooling operation.

Between

50 and 100%

ON continuously. ON PWM.

controller uses the compressor stages for cooling.

Compressor Minimum

ON/OFF Timers

z When fan mode = OFF, Com-

pressor minimum ignored.

z When fan mode = AUTO, Com-

pressor minimum observed.

z The diagnostic reset ignores the

compressor timers

z A communicated compressor

disabled or unoccupied signal ignores minimum

100%

Compressor continuously.

Both compressors continuously.

ON timers are

OFF timers are

ON and OFF.

ON times.

Single and Dual Compressor Operation

Other Modes Occupancy Operation

Unoccupied operation normally is associated with evening hours when the space is vacant. In unoccupied mode, the controller always uses the default unoccupied heating and cooling setpoints stored in the controller. As the unit goes unoccupied, the compressors timers are ignored and the compressors are disabled.

When ZN510 controls the space to unoccupied mode, the occupant may have the ability to request timed override through the Trane zone sensor’s the controller or system setup, the

ON button. Based on

controller interprets the request and

initiates the occupied setpoint

operation. During a timed override,

the controller applies the occupied

heating and cooling setpoint, but

reports the effective occupancy

mode as occupied bypass mode. In

the occupied bypass mode, a

building automation system can

detect whether the occupancy mode

was overrode.

Morning Warm Up

The damper (field installed or for the

console product) remains closed

during morning warm up until the

space temperature is within two

degrees of the effective heating

setpoint. The 2-position outdoor air

damper normally is open during the occupied mode when the controller turns on the unit fan. The damper is normally closed during:

z occupied mode when the fan is

OFF.

z warm up/cool down mode.

z occupied standby mode.

z unoccupied mode.

z certain diagnostic conditions.

ZN510 keeps the 2-position outside air damper closed on a transition from unoccupied mode to occupied mode as part of the morning warm up sequence.

Master Controller

ZN510 can send or receive data (such as setpoint, heat/cool mode, fan request and space temperature) to and from other controllers on the communication link, with or without a building automation system. This includes applications where multiple unit controllers share a common space temperature sensor, both for standalone and building automation applications.

The master controller (the unit controller with the hardwired zone sensor) in peer-to-peer communication can send its zone temperature to one or more slave controllers which allows the slave controllers to track each other’s zone temperature. For these applications, Rover is used in set up of the controller.

See Figure 9 for Master/Slave setpoint operation for peer-to-peer set up.

Data Sharing

Master Controller

CANCEL

Zone Sensor

Communication Link

24V

GND

TB1-2

TB1-1

98 0010155

J2-1

J2-2

BINARY

INPUTS

ComfortLin k 10

J2-3

J2-4

J2-5

ECHELON

J2-6

COMMMU NICAT ION

TB2-2

TB2-3

TB2-1

COMM COMM COMM

Slave Controller Slave Controller

Figure 9: Master/slave setpoint operation for peer-to-peer setup

FTT-10A

TB2-4

(Actual Size 4.0"x5.5")

COMM

TB2-5

TB2-6

SERVICE

1234567

BINARY

OUTPUTS

SW2

X13650607-01 A

NID:

12-34-56-78-9A -BC

ComfortLink(tm) 10

TEST

STATUS

J3-4

AI 2AI 1

J3-3

J3-2

ANALOG INPUTS

J3-1

ZONE SENSOR

SW1

TB3-1

TB3-2

TB3-3

TB3-4

TB3-6

SET

FAN

ZONE

GND

Setpoint Operation

Controllers sharing information peer-to-peer can share a variety of data, including the heating/cooling setpoint (communicated from a master to a slave).

The standalone master controller derives its setpoint from either the local hardwired setpoint input or from its default setpoints. Peer-topeer applications often require the use of one hardwired setpoint to be shared across two or more controllers. This can be achieved by wiring the adjustable setpoint (typically included as a part of the Trane zone sensor module) to the controller defined as the master. Trane’s service tool, Rover may be used to set up the master and one or more slaves to share that setpoint. For this application, each communicating controller uses the same setpoint.

Note: Each controller derives it’s effective setpoint and default setpoints (including deadbands between setpoints) from the setpoint input (hardwired or communicated). To make sure the peer-to-peer setpoint application results in identical setpoints for each communicating controller, each controller must have exactly the same default setpoints.

Simplified Peer-to-Peer (Master/ Slave) Setup

To simplify setting up master/slave applications, the controller provides information that groups all necessary shared data into one communication variable. This master/slave variable includes the following information:

z Space temperature.

z Setpoint.

z Heating/cooling mode.

z Occupancy.

z Fan status.

z Unit control algorithm capacity.

This information is communicated from the master to the slave to ensure similar unit operation.

Use Rover, Trane’s service tool, to set up peer-to-peer applications.

Refer to the Rover

product literature for more information on setting up applications.

Configuration

Configurable Parameters

Rover, Trane’s service tool, uses the unit type “heat pump” to determine and download unit configuration

information, such as the default analog inputs, the default binary inputs, and the default binary output configurations. See Table 7 for

Table 8: Heat pump heating or cooling operation.

Unit Type Heat pump

Cooling Source Compressor

Heating Source Compressor (none for cooling only units)

Compressors 1 (2 for 2-compressor units)

BOP 1: Fan on (normally open) BOP 2: Reversing valve (normally open)*

Binary Outputs

Binary Inputs

Analog Inputs

Fan

Setpoints

Occupied Bypass Timer

Leaving Water Temperature Low Limit

Location Identifier Unit specific (maximum of 30 characters)

BOP 3: Not used BOP 4: Compressor 1 (normally open) BOP 5: Compressor 2 (normally open)** BOP 6: Outdoor Air Damper (normally open)***

BI 1: Low temperature detection, circuit 2 (normally closed)* ** BI 2: Condensate overflow (normally closed)† BI 3: Occupancy (normally open)

Zone: Space temperature (0.0 F calibration) Set: Setpoint (0.0 F calibration) Fan: Fan mode AI 1: Leaving water temperature AI 2: Discharge air temperature

Fan operation (heating): Cycling Fan operation (cooling): Cycling Fan speed default (heating): On/high Fan speed default (cooling): On/high Fan switch (hardwired): Enabled

Unoccupied cooling setpoint: 85 F Occupied standby cooling: 78 F Occupied cooling setpoint: 74 F Occupied heating setpoint: 71 F Occupied standby heating: 67 F Unoccupied heating setpoint: 60 F Cooling setpoint high limit: 115 F Cooling setpoint low limit: 40 F Heating setpoint high limit: 115 F Heating setpoint low limit: 40 F Thumbwheel set point: Enabled

120 minutes

Unit specific (20 F ground source or 35 F standard)

* BOP 2, BI1: Not used on cooling only units. ** BOP 5: Not used on signal compressor unit. *** Configured but not required. † Optional model number dependent

default configurations for heat pumps.

The heating and cooling setpoint high and low limits only apply to the occupied and occupied standby setpoints. These limits never apply to the unoccupied setpoints.

The occupied bypass time is used for timed override applications. The timed override timer is maintained in the unit controller. When the timed override is applicable, the controller reports “Occupied Bypass” as its effective occupancy mode.

The leaving water temperature low limit is used for freeze protection of circuit 1 on heat pumps. Circuit 2 is protected by a binary low temperature detection device (freezestat) with a fixed trip point.

Troubleshooting

Red Service LED

Table 9: Red LED activity

Red LED Activity Description

LED off continuously when power is applied to the controller.

LED on continuously, even when power is applied to the controller.

LED flashes once every second.

!Warning! Service Button

The black Service button on the ZN510 board allows the user to send a service pin message, which allows efficient identification of the unit's location. However, if the Service button is held for more than 10 seconds, the ZN510 will shut down the software application and disable the unit's operation. The only method to restore the unit is through the use of Rover service tool. We strongly suggest that this function only be exercised under the strict direction of factory service personnel.

Normal operation.

Someone is pressing the service button or the controller has failed.

Use Rover, Trane’s service tool, to restore the unit to normal operation or unconfigured.

Green Status LED

The green LED normally indicates whether the controller is powered on (24 VAC).

Table 10: Green LED activity

Green LED Activity Description

LED on continuously. Power on (normal operation).

LED blinks (one blink).

LED blinks (two blinks).

LED blinks (1/4 second on, 1/4 second off for 10 seconds.

LED off.

Yellow Service LED

Table 11: Yellow LED activity

Yellow LED Activity Description

LED off continuously.

LED blinks.

LED on continuously. Abnormal condition.

The controller is not detecting any communication. (Normal for standalone applications).

The controller detects communication. (normal for communicating applications, including data sharing).

Manual output test mode (2-second hold), No diagnostics present.

Manual output test mode (2-second hold), One or more diagnostics are present.

“Wink” mode. This feature allows the identification of a controller. By sending a request from a device, such as Rover, Trane’s service tool or ZN510 Loop Controller, a request to the controller can be made to “wink” a notification that the controller received the signal. When the zone sensor

ON button is held for 10 seconds

“Wink” mode is sent from Comfort Link Controller.

Power off.

z Abnormal condition. z Test button is pressed.

Troubleshooting

Manual Output Testing the Heat Pump Configurations

The procedure for testing heat pump configurations is:

1. Press and hold the Test button

for at least three seconds to start the test mode.

2. The test sequence resets

diagnostics and turns off all outputs.

3. Press the Test button several

more times (no more than once per second) to advance through the test sequence.

Table 12: Test sequence

Step

1. Off Off Off Off Off Closed

2. Fan on (At the beginning of step 2, the controller attempts to clear all diagnostics).

3. Reversing Valve On On Off Off Closed

4. Cool 1 On On On Off Closed

5. Cool 2 OnOn OnOnClosed

6. Compressor(s) off This stage helps avoid compressor cooling and heating in sequential steps by turning the compressors off prior to changing the reversing valve state.

7. Heat 1 On Off On Off Closed

8. Heat 2 On Off On On Closed

9. Outdoor air damper On Off Off Off Open

10. Exit After the outdoor air damper step, the test sequence performs the exit step. This initiates a reset and attempts to return the controller to normal operation.

Fan

BOP 1

On Off Off Off Closed

Reversing Valve

BOP 2

Compr 1

BOP 4

Compr 2

BOP 5

Damper

BOP 6

Testing the Heat Pump Configurations

The outputs are not subject to minimum times during the test sequence. However, the test sequence only permits one step per second which limits output time.

All outputs are exercised regardless what timer they are or are not configured for. For example, single compressor heat pumps function

the same as two compressor units. For single compressor units, the cool 2 and heat 2 steps control the appropriate binary outputs, but do not affect unit operation.

Reversing valve and damper outputs cycle independent of configuration.

Pump Operation for Systems with ZN510 Loop Controller

During Unoccupied, the pumps will

OFF but should be energized to

be test compressor operation. The user must override the pumps either at the ZN510 Loop Controller or by pushing the

ON button of the zone

sensor. This will send the units to an occupied bypass, which

will turn the pumps on prior to operating manual output test.

Troubleshooting

Questionable Unit Operation

Table 13: Fan output does not energize

Probable Cause Explanation

Random start observed.

Power up control wait.

Cycling fan operation.

Unoccupied operation.

Fan mode off.

Requested mode off.

Diagnostic present.

No power to the controller.

Unit configuration.

Manual output test.

Unit wiring.

After power up, the controller always observes a random start from 0 to 25 seconds. The controller remains off until the random start time expires.

When power up control wait is enabled (non-zero time), the controller remains off until one of two conditions occurs:

The controller exits power up control wait once it receives communicated information.

z The controller exits power up control wait once the power up control

wait time expires.

When configured to cycle with capacity, normally the unit fan cycles off with heating or cooling. The heating/cooling sources cycle on or off periodically with the unit fan to provide varying amounts of capacity to the space.

Even when the controller is configured for continuous fan operation, the fan normally cycles with capacity during unoccupied mode. While unoccupied, the fan cycles on or off with heating/cooling to provide varying amounts of heating or cooling to the space.

When a local fan mode switch determines the fan operation, the off position controls the unit fan off.

The desired operating mode (such as off, heat and cool) can be communicated to the controller. When off is communicated to the controller, the unit controls the fan off. There is no heating or cooling.

A specific list of diagnostics affects fan operation. See Diagnostics section on page 27.

If the controller does not have power, the unit fan does not operate. For the ZN510 controller to operate normally, it must have an input voltage of 24 VAC. When the green LED is off continuously, the controller does not have sufficient power or has failed.

The controller must be properly configured based on the actual installed end devices and application.

The controller includes a manual output test sequence that may be used to verify output operation and associated output wiring. However, based on the current step in the test sequence, the unit fan may not be on. Refer to the manual output overrides on page 9.

The wiring between the controller outputs and the fan relays and contacts must be present and correct for normal fan operation.

Questionable Unit Operation

Table 14: Compressor(s) not running

Probable Cause Explanation

Normal operation.

Requested mode off.

Communicated disable.

Manual output test.

Diagnostic present.

Unit configuration.

No power to the controller.

Unit wiring.

Troubleshooting

The controller compressor(s) turn on and off to meet the unit capacity requirements.

The desired operating mode (such as off, heat and cool) can be communicated to the controller. When off is communicated to the controller, the unit shuts off all unit compressor(s).

Numerous communicated requests may disable the compressor, including a compressor enable input. Depending on the state of the communicated request, the unit may disable the compressor.

The controller includes a manual output test sequence that may be used to verify output operation and associated output wiring. However, based on the current step in the test sequence, the compressor(s) may not be on. Refer to the manual output overrides on page 9.

A specific list o f diagnostics affects compressor operation, depending whether the unit is configured as heat pump. For more information, see the Diagnostics section on page 27.

The controller must be properly configured based on the actual installed end devices and application. When the unit configuration does not match the actual end device, the compressor may not work correctly.

If the controller does not have power, the compressor does not operate. For the ZN510 controller to operate normally, a voltage input of 24 VAC must be applied. When the green LED is off continuously, the controller does not have sufficient power or has failed.

The wiring between the controller outputs and the compressor contacts must be present and correct for normal compressor operation.

Table 15: Outdoor air damper stays open

Probable Cause Explanation

The controller opens and closes the outdoor air damper based on the controller’s

Normal operation.

Manual output test.

Unit configuration.

Unit wiring.

occupancy mode and fan status. Normally, the outdoor air damper is open during occupied mode when the fan is running and closed during unoccupied mode. Refer to the outdoor air damper section on page 8.

The controller includes a manual output test sequence that may be used to verify output operation and associated output wiring. However, based on the current step in the test sequence, the outdoor air damper may not open. Refer to the manual output overrides on page 9.

The controller must be properly configured based on the actual installed end devices and application. When the unit configuration does not match the actual end device, the outdoor air damper may not work correctly.

The wiring between the controller outputs and the compressor contacts must be present and correct for normal damper operation.

Troubleshooting

Questionable Unit Operation

Table 16: Outdoor air damper stays closed

Probable Cause Explanation

The controller opens and closes the outdoor air damper based on the controller’s

Normal operation.

Warm up and cool down.

Requested mode off.

Manual output test.

Diagnostic present.

Unit configuration.

No power to the controller.

Unit wiring.

The controller includes both a morning warm-up and cool down sequence to keep the outdoor air damper closed during the transition from unoccupied to occupied. This is an attempt to bring the space under control as quickly as possible.

The desired operating mode (such as off, heat and cool) can be communicated to the controller. When off is communicated to the controller, the unit closes the outside air damper.

The controller includes a manual output test sequence that may be used to verify output operation and associated output wiring. However, based on the current step in the test sequence, the outdoor air damper may not be open. Refer to the manual output overrides on page 9.

A specific list o f diagnostics affects outdoor air damper operation, depending whether the unit is configured as heat pump. For more information, see the Diagnostics section on page 27.

The wiring between the controller outputs and the outdoor air damper must be present and correct for normal outdoor air damper operation.

Diagnostics

Table 17: ZN510 controller diagnostics

Diagnostic Fan Other Outputs

Condensate overflow Off

Low temp detect - Crt 1 Enabled

Low temp detect - Crt 1 and 2 Off

High/low press cutout - Crt 1 Enabled

High/low press cutout - Crt 2 Enabled

High/low press cutout - Crt 1 and 2 Off

Space temperature failure* Off

Leaving water temp failure Enabled

Compressors: Off Damper: Closed

Compressor 1: Off Compressor 2: See note below. Damper: See note below.

Compressor 1: See note below. Compressor 2: Off Damper: See note below.

Compressor 1: Off Compressor 2: Off Damper: Closed

Compressor 1: Off Compressor 2: See note below. Damper: See note below.

Compressor 1: See note below. Compressor 2: Off Damper: See note below.

Compressor 1: Off Compressor 2: Off Damper: Closed

Compressor(s): Off Damper: Closed

Compressor 1: Off Compressor 2: See note below. Damper: See note below.

Discharge air temp failure* Enabled

Maintenance required (example: Filter Status)

Local setpoint failure* Enabled

Local fan mode failure* Enabled

Invalid unit configuration Disabled

Enabled

Compressor(s): No action Damper: No Action

Compressor(s): Enabled Damper: Enabled

Compressor(s): Disabled Damper: Disabled

High/low pressure cutout and low temperature detection diagnostics for heat pump configurations isolate each circuit and independently disable compressor operation. For single compressor units, these diagnostics cause the compressor to shut down, the unit fan to be controlled off, and the outdoor air damper to be closed (when present).

When BOP 6 is configured as a generic binary output, BOP 6’s state is unaffected by all unit diagnostics.

* Note: Non-latching diagnostics automatically reset when the input is present and valid.

Diagnostics

Translating Multiple Diagnostics

The controller senses and records each diagnostic independently of the diagnostics. It is possible to have multiple diagnostics present simultaneously. The diagnostics are reported in the order they occur.

Resetting Diagnostics

1. Automatically by the controller.

2. By initiating a manual output

test at the controller.

3. By cycling power to the

controller.

4. Through a building automation

system such as ZN510 Loop Controller.

5. Through Rover, Trane’s service

tool.

6. Through any communicating

device with the ability to access the controller’s alarm reset input.

Automatic Diagnostic Reset

The ZN510 controller includes an automatic diagnostic reset function. This function attempts to automatically recover a unit when the following diagnostics occur:

z Low temperature detection,

Circuit 1

z Low temperature detection,

Circuit 2

z Low temperature detection,

Circuit 1 and 2

z High/low pressure cutout,

Circuit 1

z High/low pressure cutout,

Circuit 2

z High/low pressure cutout,

Circuit 1 and 2

When one or more of these special diagnostics occurs, the controller responds to the diagnostic as defined in the table 17 on page 27. After the controller detects the first special diagnostic (listed on page

27), the unit waits 30 minutes before invoking the automatic diagnostic reset function. The automatic diagnostic reset function clears all special diagnostics and attempts to restore the controller to normal operation. The controller resumes normal operation until another diagnostic occurs.

If a special diagnostic occurs within 24 hours after an automatic diagnostic reset, the diagnostic must be manually reset.

Cycling Power

When the 24 controller has been turned off, the unit cycles through a power up sequence. By default, the controller attempts to reset all diagnostics at power up. Diagnostics present at power up and those that occur after power up are handled according to the table on page 27.

Building Automation System (CLC)

Some building automation systems can reset diagnostics in the ZN510 controller. The ZN510 Loop Controller can reset diagnostics in the ZN510 Controller. For complete information, refer to the building automation system product literature.

VAC power to the

Rover Service Tool

Trane’s service tool, Rover, can reset diagnostics in the ZN510 controller. For complete information about Rover, refer to the Rover product literature.

Alarm Reset

Any device that can communicate alarm reset information can reset diagnostics in the ZN510 controller.

ZN510 Controller Replacement

1. Disconnect power or disable

the circuit breaker to unit.

2. Remove bad or questionable

ZN510 Controller.

3. Install controller in the unit with

the heatsink placement at the top of the control box. (See page 32).

4. Connect the power to the ZN510

ONLY. (TB1-1 & TB1-2 on ZN510)

5. Connect Rover and properly

configure the controller, unless a previously configured board is purchased.

6. Power down.

7. Connect the remaining input

and output wiring to the controller.

8. Reapply power.

9. Complete sequence 7 and 8

above in the installation section of this manual.

10. Refer to BAS manual for

instructions on how to install the new ZN510 into BAS system.

Wiring Diagram

Hardware Specifications

Specifications

Board Dimensions

Height: 4” (102 mm)

Width: 5-1/2” (140 mm)

Depth: 2-1/4” (57mm)

Operating Environment

32 to 140 F (0 to 60 C) 5 to 95% non-condensing

Storage Environment

-40 to 185 F (-40 to 85 C) 5 to 95% non-condensing Power Requirements 18 to 32 VAC (24 VAC nominal) 50 or 60 Hz 300 mA

Agency Listings

UL and CUL 916 Energy Management System Agency Compliance IEC 1000-4-2 (ESD), IEC 1000-4-4

Heat sink is mounted to the top of the control box

(EFT), IEC 1000-4-5 (Surge), FCC Part 15, Class A.

Input/Output Summary

z Three binary inputs.

z Six binary outputs only five are

used.

z Five analog inputs.

z Timed override ON and CANCEL.

z Comm5 communication.

4”

Figure 10: ZN510 Circuit Board

5 1/2”

Hardware Specifications

Table 18: Binary Inputs

Description Te r mi na l s Function

Binary Input 1 J2-1 24

J2-2 Input

Binary Input 2 J2-3 24

J2-4 Input

Binary Input 3 J2-5 24

J2-6 Input

Table 19: Binary Outputs

VAC

Description Te r mi na l s

Binary Output 1 J1-1 12 VA 1 VAC RMS (typical) 24 VAC RMS (typical)

Binary Output 2 J1-2 12 VA 1 VAC RMS (typical) 24 VAC RMS (typical)

Binary Output 3 J1-4 NOT USED

Binary Output 4 J1-5 12 VA 1 VAC RMS (typical) 24 VAC RMS (typical)

Binary Output 5 J1-6 12 VA 1 VAC RMS (typical) 24 VAC RMS (typical)

Binary Output 6 J1-7 12 VA 1 VAC RMS (typical) 24 VAC RMS (typical)

Output

Rating

Load Energized Load De-energized

Table 20: Analog Inputs

Description Te rm in al s Function Range

Zone TB3-1 Zone temperature input 5 to 122 F (-15 to 50 C)

Ground TB3-2 Analog ground NA

Set TB3-3 Setpoint input 40 to 115 F (4.4 to 46.1 C)

Fan TB3-4 Fan switch input

Ground TB3-6 Analog ground NA

Analog Input 1 J3-1 Leaving water

temperature

J3-2 Analog ground NA

Analog Input 2 J3-3 Discharge air temperature -40 to 212 F (-40 to 100 C)

J3-4 Analog ground NA

OFF = 4821 to 4919 Ohms AUTO = 2297 to 2342 Ohms

-40 to 212 F (-40 to 100 C)

Trane Tracer, ZN510 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Start-up Procedure

Power Up Sequence

Unit Operation

Zone Sensor

Data Sharing

Configuration

Troubleshooting

Diagnostics