Page 2 - © 1998, American Standard Company; Service Literature
LiteratureHistory © 1998, American Standard Company Installation, Operation, and Programming WSHP-IOP-2 Library Service Literature Product Section Unitary Product Water-Source Heat Pumps Model 000 Literature Type Installation, Operation,and Programming Sequence 1 Date April 1998 File No. SL-UN-000-W...
Page 3 - Table of Contents
Table of Contents 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 ControlMode Operation 18 Single or Dual Compressor...
Page 4 - Near hot or cold air ducts
4 Start-upProcedure 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 ...
Page 5 - Power Up Sequence; power initially is
5 Power UpSequence 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 tempera- ture can be hardwired to the ...
Page 6 - Unit Identification Tag; Figure 1
6 UnitIdentificationTag 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 aff...
Page 7 - General Information; Up to two compressors.; Communication; with Trane’s service tool; Figure 3: Communication Wiring; Unit Operation
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 so...
Page 8 - Power; Figure 4; Binary Outputs; Figure 5; Table 1; Model; BOP
8 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 ancil-lary devices is not available from the board. It must be tapped at tra...
Page 9 - Analog Outputs; are fixed sequences.; Bin; Table 2; Note; Output Overrides
9 Unit Operation Analog Outputs ZN510 does not use 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 B...
Page 10 - Table 3; : ZN510 response to low temperature detection diagnostic; Condensate Overflow
10 Unit Operation Low Temperature Detection The low temperature detection 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 refrig...
Page 11 - Table 4; Description; Generic Binary Input; Figure 7
11 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 operates according to th...
Page 12 - Analog Inputs; Figure 8
12 Unit Operation 1 2 4 5 6 7 3 Analog Inputs The ZN510 controller has five available analog inputs (AI). These inputs are factory-configured for the following functions: z Zone = Space temperature. z Set = Local setpoint. z Fan = Fan mode input. z AI 1 = Leaving water tem-perature (Circuit 1). z AI...
Page 14 - and the fan; Fan Off Delay; for an; Leaving Water Temperature
14 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 req...
Page 15 - and; Setpoint Operation; Method
15 Zone Sensor 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 communicate...
Page 16 - Table 6; : Zone Sensor Options; . If the fan control; or; Buttons; Momentarily pressing the; button; Communication Jack
16 Zone Sensor Table 6 : Zone Sensor Options Part Number:X13510628010Description: z Space temperature (0.2 C resolution). z Internal setpoint. z Communication jack. z Vertical case with Trane logo Part Number:X13510606010Description: z Space temperature (0.2 Cresolution). z External setpoint. z Comm...
Page 17 - Zone Sensor Specifications
17 Zone Sensor Specifications Part Number:X13510606020Description: 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:X13510635010Description: z Space temperature (0.2 C resolution). z External setp...
Page 18 - Compressor Minimum; Timers; Unit
18 Heating or Cooling ControlMode Operation Heating or CoolingOperation For both single and dual compressor operation, the ZN510 controller cycles the compressor(s) on and off to meet heating or cooling zone demands. The controller uses the unit capacity and pulse width modulation (PWM) logic along ...
Page 19 - the controller or system setup, the; Morning Warm Up; occupied mode when the fan is; occupied standby mode.
19 Single and Dual CompressorOperation Other ModesOccupancy 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 goe...
Page 20 - Data Sharing; See; may be; Slave Controller; Unit control algorithm capacity.; Master Controller
20 Data Sharing 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 sha...
Page 21 - : Heat pump heating or cooling operation.; Unit Type; Configuration
21 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 default configurations for heat...
Page 22 - Test button is pressed.; Green Status LED; : Yellow LED activity; Yellow LED Activity; Troubleshooting; Red Service LED; Red LED Activity
22 Table 10 : Green LED activity Green LED Activity Description LED on continuously. Power on (normal operation). LED blinks (one blink). Manual output test mode (2-second hold), No diagnostics present. LED blinks (two blinks). Manual output test mode (2-second hold), One or more diagnostics are pre...
Page 23 - Press and hold the Test button; but should be energized to; button of the zone; will turn the
23 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 t...
Page 24 - : Fan output does not energize; Probable Cause
24 Troubleshooting Questionable UnitOperation Table 13 : Fan output does not energize Probable Cause Explanation Random start observed. 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. Power up control...
Page 25 - : Outdoor air damper stays open
25 Troubleshooting Questionable UnitOperation Table 14 : Compressor(s) not running Probable Cause Explanation Normal operation. The controller compressor(s) turn on and off to meet the unit capacity requirements. Requested mode off. The desired operating mode (such as off, heat and cool) can be comm...
Page 26 - : Outdoor air damper stays closed
26 Troubleshooting Questionable UnitOperation Table 16 : Outdoor air damper stays closed Probable Cause Explanation Normal operation. The controller opens and closes the outdoor air damper based on the controller ’s occupancy mode and fan status. Normally, the outdoor air damper is open during occup...
Page 27 - Diagnostics; : ZN510 controller diagnostics; Diagnostic; High/low pressure cutout; low temperature detection; diagnostics for heat pump configurations isolate
27 Diagnostics Table 17 : ZN510 controller diagnostics Diagnostic Fan Other Outputs Condensate overflow Off Compressors: OffDamper: Closed Low temp detect - Crt 1 Enabled Compressor 1: OffCompressor 2: See note below.Damper: See note below. Low temp detect - Crt 1 Enabled Compressor 1: See note belo...
Page 28 - Automatically by the controller.; power to the
28 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 ...
Page 29 - Wiring Diagram
Page 31 - Timed override; Board Dimensions
31 5 1/2” 4” Heat sink is mounted to the topof the control box HardwareSpecifications Specifications 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-condensingPower Requirements18 to 32 VAC (24 VAC nominal)50 or 60 Hz300...
