McQuay AHB Installation Manual

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Installation Manual IM 747

MicroTech II™ Unit Ventilator Controls

for AAF®-HermanNelson® Classroom Unit Ventilators

Group: Unit Ventilator Part Number: 106506201

Date: July 2002 Supercedes: New

Used with AAF-HermanNelson Models: Vertical Floor - AVS, AVV, AVB, and AVR

Self-Contained Vertical Floor - AZS, AZQ, AZU, AZV, AZR, AED, AEQ, ARQ, ERQ

This manual is to be used by the installer as a guide. Each installation is unique, only general topics are covered.

Horizontal Ceiling - AHF, AHV, AHB, and AHR

IMPORTANT

Before beginning installation, please read this publication in its entirety.

Develop a thorough understanding before starting the installation procedure.

The order in which topics are covered may not be those required for the actual installation.

Table of Contents

Safety Information........................................................ 3

Warnings and Cautions ................................................ 3

Introduction .................................................................. 4

General Description................................................... 4-5

Component Data ........................................................... 5

Unit Ventilator Controller (UVC)............................. 5

Expansion Board (EXP) ............................................ 6

Local User Interface (LUI) ....................................... 6

Plug-in LonMark Space Comfort Controller (SCC)

Communication Module (optional)........................... 6

Plug-in BACnet MS/TP

Communication Module (optional)........................ 6-7

Plug-in Metasys N2 Open Communication Module ..

Face & Bypass Damper Actuator (optional)............. 9

Modulating Valve Actuator (optional) ................... 10

2-position End-of-Cycle (EOC) Valves (optional) . 10

2-position Motorized Water Valves (optional) ....... 10

Time Clock (option) ........................................... 11-13

Make Electrical Wiring Connections ......................... 14

Field Wiring Harness Locations................................. 14

Field Wiring Remote Mounted Temperature Sensor . 15

Remote Wall Mounted Temperature Sensors ............ 15

Locating Wall Sensors ............................................... 16

Installing Wall Sensors.......................................... 17-19

External Input Option Wiring .................................... 19

External Output Option Wiring ............................. 19-20

(optional) ................................................................... 7

Temperature Sensor .................................................. 7

Humidity Sensor (optional)....................................... 8

Carbon Dioxide (CO2) Sensor (optional) ................. 8

Outdoor Air Damper (OAD) Actuator...................... 9

Split-System Condensing Unit Signal Wiring ........... 21

Communication Module Wiring ................................ 21

UVC Input and Output Tables ..............................22-27

UVC Configuration Parameters ............................ 28-30

Page 2 of 32 IM 747

Safety Information

NOTICE

WARNING

CAUTION

WARNING

Follow all safety codes. Wear safety glasses and work gloves. Have a fire extinguisher available. Follow all warnings and cautions in these instructions and attached to the unit. Consult applicable local building codes and National Electrical Codes (NEC) for special requirements.

Electric shock hazard. Can cause personal injury, or death, or equipment damage. This equipment must be properly grounded. Connections and service to the MicroTech II control panel must be performed only by personnel that are knowledgeable in the operation of the equipment being controlled.

Recognize safety information. When you see a safety symbol on the unit or in these instructions, be alert to the potential for personal injury or death. Understand the meanings of the words DANGER, WARNING, and CAUTION. DANGER identifies the most serious hazards that will result in death or severe personal injury; WARNING means the hazards can result in death or severe personal injury; CAUTION identifies unsafe practices that can result in personal injury or product and property damage.

Improper installation, adjustment, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may result in personal injury or property damage. This product must be installed only by personnel with the training, experience, skills, and applicable licensing that makes him/her “a qualified professional HVACR installer.”

! DANGER

DISCONNECT ALL ELECTRICAL POWER BEFORE SERVICING UNIT TO PREVENT INJURY OR DEATH DUE TO ELECTRICAL SHOCK.

If the unit ventilator is to be used for temporary heating or cooling, the unit must first be properly commissioned. Failure to comply with this requirement will void the warranty.

Static sensitive components. A static discharge while handling electronic circuit boards can cause damage to the components. Discharge any static electrical charge by touching the bare metal inside the main control panel before performing any service work. Never unplug any cables, circuit board terminal blocks, relay modules, or power plugs while power is applied to the panel.

CAUTION

For proper space control, and a more trouble free unit operation, it is important that End-of-Cycle (EOC) valves be used in all face & bypass damper equipped unit ventilators. An EOC valve is

required for the wet heat coil in any unit ventilator that combines both a refrigerant coil and a wet heat coil. Use an EOC valve on all wet heat coils to minimize the potential for overheating.

CAUTION

For proper space control, and a more trouble free unit operation, it is important that an occupancy control means be used such that the unit is placed into unoccupied mode during regular low load conditions such as nighttime, weekends and holidays.

CAUTION

HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. FAILURE TO DISCONNECT POWER BEFORE SERVICING CAN CAUSE SEVERE PERSONAL INJURY OR DEATH.

USE COPPER CONDUCTORS ONLY. UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT OTHER TYPES OF CONDUCTORS. FAILURE TO DO SO MAY CAUSE DAMAGE TO THE EQUIPMENT.

IM 747 Page 3 of 32

WARNING

CAUTION

CUS

Extreme temperature hazard. Can cause damage to system components.

This MicroTech II controller is designed to operate in ambient temperatures from -40°F to 158°F. It can be stored in ambient temperatures from -65°F to 176°F. The controller is designed to operate in a 10% to 90% RH (non-condensing) and be stored in a 5% to 95% RH (non-condensing) environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a normal commercial environment. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

McQuay International disclaims any liability resulting from any interference or for the correction thereof.

Introduction

This manual contains information regarding the MicroTech II™ Direct Digital Control (DDC) system used in the

-HermanNelson® Unit Ventilator

AAF product line. It describes the MicroTech II

Table 1. Model-Specific Unit Ventilator Installation Literature

Unit Ventilator

Model Designations

AED, AEQ Air Source Heat Pump IM 502 ARQ, ERQ Water Source Heat Pump IM UV-3-202

AZS, AZQ, AZV, AZU, AZR Self-contained Air Conditioner IM 503

AVS, AVV, AVR, AVB Vertical Floor Buildup and Split-system AHF, AHV, AHR, AHB Horizontal Ceiling Buildup and Split-system

components, input/output configurations, field wiring options and requirements. For installation and commissioning instructions and general information on a particular unit ventilator model, refer to the

Description Data Bulletin

appropriate model-specific installation and maintenance bulletin, see Table 1.

Installation & Maintenance

Number

IM 725

For a description of unit operation and information on using the Local User Interface (LUI) to view data and set control parameters, refer to the appropriate software model-specific operation manual, see Table 2.

Table 2. Software Model-Specific Operation and Maintenance Literature

Type UV Description Software Model UV Model OM Bulletin

2 Pipe Damper Control, Chilled Water/Hot Water 12 AVS, AHF OM 755

2 PIPE

4 PIPE

2CLG

DX Direct Expansion Only 5 AVV, AHV, AZV, AZU OM 751

DX/WET

ASHP Air Source Heat Pump 0 AEQ, AED OM 748

WSHP

2 Pipe Damper Control w/Wet Heat Only 10 AVS, AHF OM 754 2 Pipe Valve Control, Chilled Water/Hot Water 11 AVV, AHV OM 755 2 Pipe Valve Control w/Wet Heat Only 9 AVV, AHV OM 754 4 Pipe Damper Control, Chilled Water & Wet Heat 14 AVS, AHF 4 Pipe Valve Control, Chilled Water & Wet Heat 13 AVV, AHV, AVR, AHR 2 Pipe Damper Control, Chilled Water Only 16 AVS, AHF OM 757 2 Pipe Damper Control, Chilled Water & Electric Heat 18 AVS, AHF OM 758 2 Pipe Valve Control, Chilled Water Only 15 AVV, AHV OM 757 2 Pipe Valve Control, Chilled Water & Electric Heat 17 AVV, AHV OM 758 Direct Expansion & Electric Heat 4 AZV, AZU, AZR, AVV, AHV, AVR, AHR OM 750

Electric Heat Only 6 AVV, AHV OM 752 Damper Control, Direct Expansion and Wet Heat 8 AZS, AZQ, AVS, AHF Valve Control, Direct Expansion and Wet Heat 7 AZV, AZU, AZR, AVV, AHV.

Water Source Heat Pump 2 ARQ, ERQ Water Source Heat Pump with Electric Heat 3 ARQ, ERQ

OM 756

OM 753

OM 749

For installation and maintenance instructions on a particular plug-in communications module, refer to the appropriate protocol-specific installation and maintenance bulletin, see Table 3. For network wiring or master/slave units, follow the network wiring instructions provided in IM 729.

Table 3. Protocol-Specific Communication Card Installation Literature

Unit Ventilator Available Protocols Operation Manual Bulletin Number

Unit Ventilator Unit Controller LonWorks® Communications Module IM 729 Unit Ventilator Unit Controller BACnet® Communications Module IM 731 Unit Ventilator Unit Controller JCI N2Open® Communications Module IM 730 Protocol Data Packet ED 15065

General Description

The AAF-HermanNelson unit ventilator comes equipped with a Direct Digital Control (DDC) system that controls the unit in response to various inputs e.g. temperatures, etc., in either a stand-alone or network controlled by a compatible Building Automation System (BAS) with communications capability in one of several industry standardized protocols. The unit can operate in several modes; occupied, unoccuped, stand-by, and bypass

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(tenant override). The MicroTech II controls are made up of the following standard components. The MicroTech II Unit Ventilator Controller (UVC) is a DDC microprocessor-based controller designed to provide sophisticated comfort control of an economizer-equipped AAF-HermanNelson unit ventilator. In addition to providing normal operating control, the MicroTech II UVC provides alarm

monitoring and alarm-specific component shutdown if critical system conditions occur. Each UVC is factory wired, factory programmed and factory run tested for the specific unit ventilator model and configuration ordered by the customer. The operator can view actual temperatures, set the most common operating parameters, view alarms, etc., through use of the Local User Interface (LUI). The LUI provides a

user adjustable security feature to protect against unauthorized or accidental control parameter changes. When networked with a

BAS, additional parameters can be remotely read / set in addition to all those available on the LUI.

This MicroTech II™ UVC is capable of complete, stand-alone unit control or it can be incorporated into a building-wide network using an optional plug-in communication module. Available communication modules include BACnet

MS/TP, LonMark Space Comfort Controller (SCC), and Metasys® N2 Open. Optional MicroTech II UV ServiceTool software can be used along with a PC to adjust operating parameters within the UVC. The UV ServiceTool software, while optional, is very useful for trouble-shooting and commissioning by allowing access to all user adjustable parameters within the UVC controller including many parameters not available through the LUI. The UV ServiceTool requires one of the optional plugin communication modules as well as additional hardware components dependent upon which communications module is being used.

Basic Component Data

The main components of the unit ventilator MicroTech II DDC system include the Unit Ventilator Controller (UVC), an expansion board (EXP), the local user interface (LUI), and optional plug-in communication modules. Following are brief descriptions of these components.

Unit Ventilator Controller (UVC)

The UVC contains a 16-bit microprocessor that is preprogrammed with the application code required to operate the unit (see figure

1). The UVC supports up to 6 analog inputs, 12 binary inputs, and 9 binary outputs, (see table 4). Optional network communications is provided via plug in communication cards that connect directly to the UVC. The UVC supports additional I/O points via an I communications bus used to add the EXP board. The LUI connects directly to the UVC and is limited to unit mounted applications.

Figure 1. MicroTech II Unit Ventilator Confroller (UVC)

Table 4. MicroTech II Unit Ventilator Confroller (UVC) Specifications

Power Supply 24 VAC +/-20% 50/60 Hz

Transformer Sizing 16 VA (Class 2) Operating Temperature -4OF(-20OC) to 158OF(70OC) Storage Temperature -40OF(-40OC) to 185OF(85OC) Humidity 10%RH to 90%RH (non-condensing)

- CSA C22.2 NO. 205 – Signal Equipment

- CFR47 Part 15, Class A

- UL 873

- CE Directive 89/336/EEC

Agency Compliance Emissions: EN50081-1, EN61000-3-2, EN61000-3-3

Immunity: EN50082-1 and EN50082-2 (the most stringent requirements of either, as applicable)

- C-Tick Directive

- Low Voltage Directive 73/23/EEC EN 60730

- AI-1,2,3,4,5,6

Analog Inputs

Binary Inputs - BI-3,4,5,6

Binary Outputs - BO-3,4,5,6,9

Positive Temperature Coefficient (PTC) Thermistor, Reference Resistance = 1035 ohms @ 77OF(25OC)

- A/D Resolution: 10-bit (software enhanced to 12-bit)

- BI-1,2 Supports dry contact closure using on board 9 VDC. On board jumpers are used to disable the BO-1 and BO-2 interlocks with BI-1 and BI-2.

Supports dry contact closure using on board 9 VDC

- BI-7,8,9,10,11,12 Supports dry contact closure using 24 VAC

(Note: all binary inputs can be daisy-chained from controller to controller providing that polarity is respected)

- BO-1,2 120 VAC, 1 HP, 16 FLA, 96 LRA, 750 VA Pilot Duty 240 VAC, 2 HP, 12 FLA, 72 LRA, 1150 VA Pilot Duty 277 VAC, 3 HP, 14.1 FLA, 84.7 LRA, 1550 VA Pilot Duty BO-1: 277 VAC, 16 A Resistive BO-2: 277 VAC, 25 A Resistive

120 VAC, 1/10 HP, 3 FLA, 18 LRA, 100 VA Pilot Duty 240 VAC, 1/4 HP, 2.9 FLA, 17.4 LRA, 250 VA Pilot Duty 277 VAC, 1/3 HP, 2.98 FLA, 17.88 LRA, 300 VA Pilot Duty 277 VAC, 16 A Resistive

- BO-7,8 Triac, 24 VAC, Class 2, 5 VA Maximum

IM 747 Page 5 of 32

Expansion Board (EXP)

The EXP board provides additional I/O points required by the UVC for unit ventilator operation (see figure 2). The EXP is operated and monitored by the UVC through the use of an I2C bus. The EXP I/O board supports up to 4 analog inputs and 8 binary outputs (see table 5).

Figure 2. Expansion Board (EXP)

Plug-in LonMark Space Comfort Controller (SCC) Communication Module (optional)

The LonMark SCC communication module is designed to be an add-on module to the UVC for networking to Building Automation Systems using LonWorks communications. It supports the LonMark Space Comfort Controller (SCC) profile number 8500. It is an optional plug-in module that can be attached to the UVC via a 12-pin header and 4 locking standoffs to securely attach it to the UVC.

network

Table 5. Expansion Board (EXP) Specifications

Operating Temperature

Storage Temperature

Humidity

Agency Compliance

Analog Inputs 0 to 10 VDC

Binary Outputs Triac, 24 VAC, Class 2, 5 VA Maximum

Same as UVC

- xAI-1,2 Ratiometric 0.5 to 4.5 VDC

- xAI-3

- xAI-4 Positive Temperature Coefficient (PTC) Thermistor, Reference Resistance = 1035 ohms @ 77OF(25OC)

- A/D Resolution: 10-bit (software enhanced to 12-bit)

- xBO-1,2 120 VAC, 1/10 HP, 3 FLA, 18 LRA, 100 VA Pilot Duty 240 VAC, 1/4 HP, 2.9 FLA, 17.4 LRA, 250 VA Pilot Duty 277 VAC, 1/3 HP, 2.98 FLA, 17.88 LRA, 300 VA Pilot Duty 277 VAC, 16 A Resistive

- xBO-3,4,5,6

- xBO-7,8 120 VAC, 1 HP, 16 FLA, 96 LRA, 750 VA Pilot Duty 240 VAC, 2 HP, 12 FLA, 72 LRA, 1150 VA Pilot Duty 277 VAC, 3 HP, 14.1 FLA, 84.7 LRA, 1550 VA Pilot Duty xBO-1: 277 VAC, 16 A Resistive xBO-2: 277 VAC, 25 A Resistive

Figure 4. Lonworks SCC Communication

Module - (4" x 2") PN-107293127

Figure 5. Communication Module Location Behind Right Front Access Panel on AH Unit Types, or Below the Top Right Access Door on AV, AZ, AE, and AR Unit Types

Local User Interface (LUI)

The LUI provides the user a local unit mounted interface which indicates the current unit operating state and can be used to adjust many unit ventilator operating parameters. The LUI features a 2-digit display, 7 keys (1 key is hidden), and 9 individual LED indicators.

Figure 3. Local User Interface (LUI)

Plug-in BACnet MS/TP Communication Module (optional)

The BACnet MS/TP communication module is designed to be an add-on module to the UVC for networking to Building Automation and Control Network (BACnet) systems. It is an optional plug-in module that can be attached to the UVC via a 12-pin header and 4 locking standoffs to securely attach it to the UVC (see figure 6). It allows the UVC to inter-operate

Page 6 of 32 IM 747

with systems that use the BACnet Master Slave / Token Passing (MS/TP) protocol with a conformance level of 3. It meets the requirements of ANSI/AHSRAE 135-1995 standard for BACnet systems.

Figure 6. BACnet MS/TP Communication

Module - (4" x 2") PN-107293126

Plug-in Metasys® N2 Open Communication Module (optional)

The Metasys N2 Open communication module is designed to be an add-on module to the UVC for networking to a Building Automation System of the Metasys N2 type. It provides N2 Open network communication capability to the UVC. It is an optional plug-in module that can be attached to the UVC via a 12-pin header and 4 locking standoffs to securely attach it to the UVC (see figure 7).

Figure 7. Metasys N2 Open Communication

Module - (4" x 2") PN-107293125

Master-Slave Communication Modules (optional)

On master-slave unit ventilators a communication module is designed to be an add-on module to the UVC for peer-to-peer communications. It is an optional plug-in module that can be attached to the UVC via a 12-pin header and 4 locking standoffs to securely attach it to the UVC. It allows the UVC to inter-operate with another unit setup for master slave communication capability.

NOTICE

Do not use master/slave units when a BAS will be connected to the UVC.

NOTICE

Master/slave units will not be able to be connected with other LonWorks devices without re-performing the network variable binding process in the field.

When using master/slave control, you cannot use the Cycle Fan feature. Refer to the appropriate software model-specific operation manual for more information on the Fan Cycle feature.

NOTICE

Master / Slave Control (optional)

When it is desirable to have multiple units within one space (i.e. conference rooms, library, stairwells, cafeteria, etc.), and there is no BAS present, it may be necessary to use one master unit connected to one or more slave units to ensure each unit within the space operates in a like manner. Each unit provided as a master or slave unit will be factory provided with one master or slave module. The factory will pre-bind network variables from the master and slave unit to provide the master / slave relationship. This binding process will in effect “marry” the master unit with its corresponding slave units for the life of the communication modules. The UVC has been provided with a configuration variable to select if slave units will operate as Independent (default) or Dependent slaves (see table 6). Refer to Unit Ventilator Unit Controller LonWorks Communications Module IM729 for wiring master/slave units.

NOTICE

For proper master/slave operation, it is very important that the factory correctly understand which units will be master, which units will be slaves, and which slaves will be connected to which master units at the job site. It is the responsibility of the purchaser when placing orders to ensure that the factory understands these things. It is strongly recommended that each group of master/slave units be purchased separately from stand-alone units, or other master/slave unit groups, to help ensure proper configuration.

Table 6. Master / Slave Network Variable Binding List

Master Variables Slave Variables Used With...

Space Temp Space Temp Independent Slave Setpoint Output Setpoint Input Effective Occupancy Occupancy Sensor

Fan Speed Output Space Humidity Output Space Humidity Input Independent Slave

Outdoor Air Humidity Output Outdoor Air Humidity Input Independent Slave Space CO2 Output Space CO2 Input Independent Slave Primary Heat Output Primary Heat Input Dependent Slave Secondary Heat Output Secondary Heat Input Dependent Slave Primary Cool Output Primary Cool Input Dependent Slave Secondary Cool Output Secondary Cool Input Dependent Slave

Fan Speed Independent Slave Command Input and Dependent Slave

Independent Slave Control

Independent slave control allows a slave unit(s) to use its own sensors in determining if conditioning is required local to the slave unit while forcing the slave to use the master unit setpoints and unit mode. For example, if the master is in heat mode, then the slave units will be in heat mode, however, because this is independent slave control some units may actually be heating while other units remain idle (no heating). If heating is not required in the area local to a slave unit, cooling will not be allowed in this case. This type of slave control is ideal for spaces with varying loads across the space such as stairwells, cafeterias, etc. When the master unit is provided with CO2 (optional) and or humidity (optional) sensors, independent slave units will automatically share the value of these sensors from the master unit.

Dependent Slave Control

Dependent slave control forces the slave unit(s) to follow the master unit operation. This type of slave control is ideal for spaces with consistent loads across the space such as libraries, conference rooms, etc. With this type of control, if the master is in heat mode providing 20% of its heating capability, then all slave units will be in heat mode providing 20% of their heating capability.

Independent Slave

IM 747 Page 7 of 32

Temperature Sensor

The UVC is configured to use passive Positive Temperature Coefficient (PTC) unit-mounted and wall-mounted sensors (see figure 8and figure 31, 32, 33). These sensors vary their input resistance to the UVC as the sensed temperature changes (see table 7), see figure 9 for sensor locations.

Figure 8. Unit Mounted Sensor, for Outdoor Air, Discharge Air, and Room Air

Table 7. Temperature Sensor Specifications

Type Passive Positive

Temperature Coefficient (PTC) - Silicon Sensing Element

Range -40OF(-40OC) to

212OF(100OC)

Reference Resistance 1035 ohms at 77OC(25OC) Accuracy 0.9OF(0.5OC) between

5OF(-15OC) to 167OF(75OC)

Leads 22 AWG, 2-wire (white)

Figure 9. Sensor Locations

Discharge Air Sensor

Room Air Sensor

Holes in Front Access Panel

Indoor Humidity Sensor

Outdoor Air Sensor

Outdoor Humidity Sensor

Outdoor Air Opening

Carbon Dioxide (CO2) Sensor (optional) for Demand

Controlled

Ventilation (DCV)

On units equipped for Demand Controlled Ventilation (CO is configured to use a 0-2000 PPM, 0-10 VDC, single beam absorption infrared gas sensor (see figure 11 and table 9). The CO sensor is used by the UVC’s CO2 Demand Controlled Ventilation feature. CO are available as unit mounted only. An air collection probe (pitot tube and filter) is installed in the return air of the unit (see figure

12).

Figure 11. Carbon Dioxide (CO2) Sensor

Figure 12. Air Collecting Probe

sensor installed), the UVC

sensors

Humidity Sensor (optional)

On units equipped with humidity sensors, the

Figure 10. Humidity Sensor

UVC is configured to use a 0-100% RH, 0-5 VDC, capacitive humidity sensor(s) (see figure 10 and table 8). Humidity sensors are available as unit mounted only. The humidity sensors are used with units capable of passive or active dehumidification, or with units using outdoor enthalpy economizer or indoor/ outdoor enthalpy economizer.

Table 8. Humidity Sensor Specifications

Type Capacitive Humidity Sensor Voltage Supply 5 VDC Nominal (4.75 VDC to 5.25 VDC)

Voltage Output

Operating Temp -22OF(-30OC) to 140OF(60OC) Storage Temp -40OF(-30OC) to 158OF(70OC) Humidity 0%RH to 100%RH (not affected by water immersion) Sensing Range 1 to 99 %RH Accuracy +/- 3 %RH Typical, +/- 5 %RH Maximum Calibration Calibrated to within +/- 2 %RH at 55 %RH Leads 24 AWG, 3-wire (blue-supply, yellow-output, white-ground)

The humidity sensor is not protected against reversed polarity. Check carefully when servicing the device or equipment damage will result.

1 to 4 VDC output for 0 to 100 %RH at 5 VDC supply (ratiometric to voltage supply) (70 ohm output impedence)

CAUTION

Pitot Tube

Filter

Table 9. Carbon Dioxide (CO2)

Type Single Beam Absorption

Operating Temp 60OF(15OC) to 90OF(32OC) Storage Temp -40OF(-40OC) to

Humidity 0%RH to 95%RH

Power Supply 18 to 30 VAC 50/60 Hz Transformer Sizing 1.75 VA (Class 2) Sensing Range 0 to 2000 PPM Voltage Output 0 to 10 VDC

Accuracy +/- 100 PPM or 7% of

Calibration

Sensor Specifications

Infrared Gas Sensor

158OF(70OC)

(non-condensing)

(100 ohm output impedance)

range whichever is greater Self-calibration system eliminates the need for manual calibration in most applications

Page 8 of 32 IM 747

Face & Bypass Damper Actuator (optional)

On units equipped with a face & bypass damper, the UVC is configured to operate a floating-point (tri-state) face & bypass damper, direct coupled actuator (see figure 13 and table 18). To determine the modulating damper position the UVC uses a separate factory preset, configurable setting for each actuator's stroke time. To ensure the accuracy of actuator positioning the UVC is provided with an overdrive feature for the 0% and 100% positions and also periodic (12-hour) autozero algorithm for each modulating actuator.

Figure 13. Face & Bypass Damper Actuator

Figure 15. Damper Actuators Located in Left End Compartment

For correct space control, and proper unit operation, use End-of-Cycle (EOC) valves in all face & bypass damper equipped unit ventilators.

for the wet heat coil in any unit ventilator that combines both a refrigerant coil and a wet heat coil. Use an EOC valve on all wet heat coils to minimize the potential for overheating.

Table 10. Face & Bypass Damper Actuator Specifications

Type Floating Point (tri-state), Direct Coupled Actuator Power Supply 24 VAC +/- 20% 50/60 Hz Power Consumption 2 W Running Transformer Sizing 3 VA (Class 2) Operating Temp -22OF(-30OC) to 122OF(50OC) Storage Temp -40OF(-40OC) to 176OF(80OC) Humidity 5%RH to 95%RH (non-condensing) Torque 35 in-lb (4 Nm) Run Time 80 to 110-second for 0 to 35 in-lb Overload Protection Electronic throughout rotation Manual Override External push button Noise Level Less than 35 dB(A) Running Direction of Rotation Reversible with built-in switch Position Indication Clip-on Indicator Leads 18 AWG, 3-wire (black-24 VAC common, red-ccw, white-cw)

CAUTION

An EOC valve is required

Outdoor Air/Return Air Damper (OAD) Actuator

The UVC is configured to operate a floatingpoint (tri-state) Outdoor Air Damper direct coupled, spring returned shut actuator (see figure 14 and table 11). The OAD actuator provides spring return operation upon loss of power positive close-off of the outdoor air damper. To determine damper position the UVC uses a separate factory preset, configurable setting for each actuator's stroke time. To ensure the accuracy of actuator positioning the UVC is provided with an overdrive feature for the 0% and 100% positions and also a periodic (12hour) auto-zero algorithm for each modulating actuator.

Figure 14. Outdoor Air/Return Air Damper Actuator

Table 11. Outdoor Air/Return Air Damper (OAD) Actuator Specifications

Type Floating Point (tri-state), Spring Return, Direct Coupled Actuator Power Supply 24 VAC +/- 20% 50/60 Hz Power Consumption 2.5 W Running, 1 W Holding Transformer Sizing 5 VA (Class 2) Operating Temp -22OF(-30OC) to 122OF(50OC) Storage Temp -40OF(-40OC) to 176OF(80OC) Humidity 5%RH to 95%RH (non-condensing) Torque 35 in-lb (4 Nm) Run Time 90-second constant, independent of load Overload Protection Electronic throughout rotation Noise Level Less than 30 dB(A) Running, less than 62 dB(A) Spring Return Direction of Rotation Spring: Reversible with cw/ccw mounting

Motor: Reversible with built-in switch

Position Indication Visual Indicator, 0O to 90O (0O is the spring return position)

Leads

18 AWG, 4-wire (red-24 VAC supply, black-24 VAC common, white-ccw, green-cw)

IM 747 Page 9 of 32

2-position End-of-Cycle

Figure 16. 2-Position End of Cycle Valve Actuator (EOC)

(EOC) Valves (option)

On units equipped with 2-way or 3-way endof-cycle (EOC) valves, the UVC is configured to operate 2-position End-Of-Cycle (EOC) valve actuators (see figure 16 and table 12). Spring return actuators are used for all End of Cycle (EOC) valves. All wet heat and heat/ cool EOC valves are normally open, and all cooling EOC valves are normally closed.

Table 12. 2-Position End of Cycle (EOC) Valve Actuator Specifications

Type 2-position, Spring Return, Electric Valve Actuator Power Supply 24 VAC 50/60 Hz Power Consumption 6.5 W Running Transformer Sizing 7 VA (class 2)

Dependent upon valve ordered:

Fluid Limits at Ambient General: 32OF(0OC) to 200OF(93OC) at 104OF(40OC) Temp Limit Steam: 32OF(0OC) to 250OF(121OC) at 169OF(76OC),

15 psig (103 kPa)

Run Time 9 to 11-seconds Spring Return 4 to 5-seconds

Table 13. WSHP 2-Position Motorized Valve Actuator Specifications

Type 2-position, Spring Return, Electric Valve Actuator Power Supply 24 VAC 50/60 Hz Power Consumption 6.5 W Running Transformer Sizing 7 VA (class 2) Fluid Limits at Ambient Temp Limit Run Time 9 to 11-seconds Spring Return 4 to 5-seconds

F(0OC) to 200OF(93OC) at 104OF(40OC)

WSHP 2-position Motorized Water Valves (option)

On water source heat pump unit ventilators equipped with a motorized water valve, the UVC is configured to operate a 2-position motorized water valve actuator (see figure 17 and table 13). Spring return actuators are used for all motorized water valves. All motorized water valves are normally closed.

Figure 17. WSHP 2-Position Motorized Water Valve

Modulating Valve Actuator (option)

On units equipped with modulating valves, the UVC is configured to operate floatingpoint (tri-state) actuators for modulating 2way and 3-way valves (see figure 18 and 19, and table 14). Spring return actuators are used for all Modulating valves. All wet heat and heat/

Table 14. Modulating Valve Actuator Specifications

Type Floating Point (tri-state), Spring Return, Electric Valve Actuator Power Supply 20 to 30 VAC 50/60 Hz Transformer Sizing 12 VA (class 2) Operating Temp 32OF(0OC) to 122OF(50OC) Storage Temp -85OF(-65OC) to 185OF(85OC)

Humidity

Fluid Temp Limits 35OF(2OC) to 250OF(121OC); 15 psig (103 kPa) saturated steam Force Output Minimum 61 lb (271 N) Maximum Stroke 29/32 in. (23 mm) Run Time 76-seconds (proportionally less for shorter stroke) Spring Direction Stem-up, 3 to 15-seconds spring return Noise Level 35 dB(A)

Leads

90 %RH non-condensing at 70OF(21OC) ambient temperature and 40OF(4OC) fluid temperature

20 AWG, 4-wire (yellow-24 VAC supply, white-24 VAC common, white/ brown-stem up, brown-stem down)

cool valves are normally open, all cooling valves are normally closed. To determine modulating valve position the UVC uses a separate factory preset, configurable setting for each actuator's stroke time. To ensure the accuracy of actuator positioning the UVC is provided with an overdrive feature for the 0% and 100% positions and also periodic (12-hour) autozero algorithm for each modulating actuator.

Figure 18. 2-Way Modulating Valve Actuator

Figure 19. 3-Way Modulating Valve Actuator

Page 10 of 32 IM 747

Time Clock (optional) with Stand-Alone Unit Ventilators

As an option, stand-alone non-slave unit ventilators can be factory equipped with a unit mounted digital electronic 24-hour/7day time clock with 20 programs (see figure 20 and table 15). In stand-alone unit ventilators with this option, the time clock is factory wired to the UVC unoccupied input such that it can be used to automatically place the unit into occupied and or unoccupied modes based upon its schedule. The time clock features large keys with unique “circular programming” for easy schedule setup, a LCD display, manual 3-way override On/Auto/Off and capacitor backup to retain program memory during power outages. (See OM 761 for operating and setting the time clock.)

Figure 20. Time Clock

Figure 21. Time Clock Located Under Top Right Access Door on Models AVS, AVV, AVB, and AVR

Time Clock

Figure 22. Time Clock Located Behind Right Front Access Door on Horizontal/Ceiling Models AHF, AHV, AHB, and AHR

Time Clock

Figure 24. Time Clock Located Under Top Right Access Door on Models AZS, AZQ, AZU, AZV, AZR, AED, AEQ, ARQ, and ERQ

Time Clock

Figure 25. Time Clock Terminal Connections

Table 15. Time Clock Specifications

Type

Power Supply 24 VAC 50/60 Hz Transformer Sizing 4 VA (class 2)

Operating Temp

Humidity

Programs 20

Override

Switching Time 1-minute (shortest) Daylight Changeover Manual

Switch 16 A Resistive at

Full Charge Capacity Backup

Electronic 24-hour/7-day time switch

-20OF(29OC) to 140OF (60OC) 5%RH to 95%RH (non-condensing)

Manual 3-way override: On/Auto/Off

Type: SPDT, Rating:

277 VAC

100 Hours

Figure 23. Time Clock Dimensions

2.36" (60mm)

2.12" (54mm)

0.06"

(2mm)

Power

345

Timer Internal Wiring Unit Wiring

1.26" (32mm)

0.83" (21mm)

Switch

COM NO

Time

UVC

∅ 2.44" (62mm)

∅ 0.134" (3.4mm)

IM 747 Page 11 of 32

Time Clock - Operating Instructions

■

Keypad Description

Setting the Time/Automatic Run Mode

Prog. Program Mode Res.* Reset: Clears all programs and time

Select ON or OFF in Prog. Mode,

Manual Override in Run Mode

±1h* Manual Daylight Change Key

h Setting the Hour (12:– – AM)

m Setting the Minute (12:01 AM)

Day Set Day(s) for time and programs

*Recessed keys; use a pen point to press

■

LCD Display Elements

The LCD incorporates a number of different elements to display various data and information (see figure 26).

Figure 26. LCD Display Elements

Days of Week >

Daylight Time Symbol >

AM and PM Symbol >

Run Mode Symbol

OFF Symbol Continuous OFF Symbol

ON Symbol Continuous ON Symbol

1234567

+1h

▼

ON/OFF Symbol

■

Programs

The Digi 20 will accept up to 20 programs A program consists of:

1. An ON or OFF command

2. Time of day (Hour and Minute)

3. Single day or multiple days A program is required for each ON event, and a program is required for each OFF event. NOTE: MULTIPLE ON OR OFF EVENTS MAY BE PROGRAMMED. For example, Program 1 may turn the unit air conditioning ON at 8AM Mon.-Fri. Program 2 may turn the air conditioning OFF at 5PM Mon.-Fri. If someone is working late, they may press the override key to turn on the air conditioning. If they forget to press the override key again when they leave, the air conditioning will stay on all night (or all weekend). To prevent this from occurring, additional OFF times may be programmed.

• Program 3 can turn the air conditioning OFF at 6PM.

• Program 4 can turn the air conditioning OFF at 7PM.

• Program 5 can turn the air conditioning OFF at 8PM., etc.

IMPORTANT!

Before proceeding with setting the time and programming the unit, press the reset key to clear all data from the memory

<Time of Day or

Switching Time

▼

Manual Override ON

■

Selecting AM/PM or Military Time

After pressing reset, the display may show AM (right). The numbered day symbols will be flashing on and off. If the display does not show AM, it is in military time mode (24:00 hr.) To change to AM/PM mode, press and hold the h key and press the AM will appear in display. If display is in AM mode and military mode is desired, press and hold the h key, press the

±1h key once.

Figure 27. AM/PM Time Display

1234567

■

Setting The Time

NOTE: If the h and m keys are held down longer than 2 seconds, the numbers will advance rapidly.Press and hold the key during the following: (If Daylight Savings Time is in effect, press

±1h first)

1. Press h to advance to the current hour

(while holding down the

2. Press m to advance to the current minute

(while holding down the

3. Press Day repeatedly to advance to

current day (while holding down the

key)

NOTE: If the days are flashing, it indicates the day of the week was not set when setting the time. The timer cannot be programmed unless the day of the week is entered.

■

Manual Daylight Time

key)

Changeover

Each year, in the Spring, press ±1h to advance the time an hour. In the Fall, press ±1h to set back an hour.

■

Programming 24 Hour or 7 Day Schedules

It is helpful to write out the program schedules before beginning.

IMPORTANT!

The current time of day and day of week must be set prior to programming. See “Setting The Time”

Page 12 of 32 IM 747

Example

Program 1: ON at 7:00AM Monday thru Saturday Program 2: OFF at 5:00PM Monday thru Friday Program 3: OFF at 7:00PM Saturday

Three programs need to be entered.

Press Prog. key only once. Display shows:

1234567

Program 1: (ON at 7:00AM Monday thru Saturday) Press

Press h key ........................................ to 07AM

Press m key once ................................. to 00

Press Day key once .............................. 1 2 3 4 5 6 is displayed

Press Prog. key to enter

Program 2: (OFF at 5:00PM Monday thru Friday) Press

Press h key ........................................... to 05PM

Press m key once ................................. to 00

Press Day key two times ...................... 1 2 3 4 5 is displayed

Press Prog. key to enter

Program 3: (OFF at 7:00PM Saturday)

Press key twice ............................ OFF symbol appears

Press h key ........................................... to 07PM

Press m key once ................................. to 00

Press Day key 9 times .......................... until only 6 is displayed

Press Prog. key to enter Press

If an “ON” time was programmed that is earlier in the day than the current time, press once to turn the timer “ON”. (It does not “Look Back” to determine if it should be on or off after programming).

NOTE: If 24 hour time control (same schedule every day of the week) is desired, ignore

Day key. If a ON or OFF symbol is not entered, the ON symbol will flash, and program will not be accepted.

■

Press Day Key Display Shows Days

0 times 1234567 Every Day 1 time 123456 Mon.–Sat. 2 times 12345 Mon.–Fri. 3 times 6 7 Sat. & Sun. 4 times 1 Monday 5 times 2 Tuesday 6 times 3 Wednesday 7 times 4 Thursday 8 times 5 Friday 9 times 6 Saturday 10 times 7 Sunday

key once ............................. ON symbol appears

key twice ............................ OFF symbol appears

key to enter Run Mode

IMPORTANT!

Day Key Selections

■

Reviewing Programs

To review the programs at any time, press Prog. key. Programs will appear in the order they were entered with repeated presses of the Prog. key. After all programs have been reviewed, the blank display will appear to allow entering another program. Another press of the Prog. key will display the number of free programs available, such as Fr 16 if four programs have been entered.

■

Manual Override

TEMPORARY: While in the Run Mode, pressing the key once will reverse the output; ON to OFF or OFF to ON. The symbol appears in the display to indicate a temporary override. At the next scheduled switching time, automatic control resumes, eliminating the override. CONTINUOUS: While in the Run Mode...

• Pressing the output to ON permanently. symbol appears in display.

• Pressing the turn the output OFF permanently. appears in display.

• To terminate a continuous override, press the

■

Select the program to be changed with the Prog. key. A new set of days may be selected with the Day key just as in initial programming. Hour and minute can be changed with the h and m keys. Press Prog. or program.

■

To delete only one or a few programs: Press Prog. key until the desired program is displayed. Press m key to :59 and press once more to blank out. Press h key to 11PM and press once more to blank out. Press seconds and then enter the Run Mode. Using the reset key will delete ALL programs, the time of day, and day of the week.

key until appears in the display.

Changing A Program

Deleting A Program

key, display will flash for several

key twice will turn the

key three times will

symbol

key to store the new

IM 747 Page 13 of 32

Make Electrical Wiring Connections

WARNING

DANGER

Power supply to unit must be disconnected when making field connections. To avoid electrical shock, personal injury or death, be sure to rigorously adhere to field wiring procedures regarding proper lockout and tagout of components.

CAUTION

Use copper conductors only. Use of aluminum conductors may result in equipment failure and overheating hazards. All wiring in right hand compartment must be class 1.

Figure 28. Model AV - Field Wiring Whips with Caps Viewed from Right End Compartment

Field Wiring at back of Local User Interface (LUI) Panel

Two pin plug for unit mounted sensor

Figure 29. Wiring Location Using Wall Sleeve with Models ASZ, AZQ, AZV, AZU, AZR, AED and AEQ

2.5/1.75" Dia. Knockout

3.0/2.0" Dia. Knockout Wall Sleeve

▲

Wire Wips for Field Wiring with Caps (see the wiring diagram provided on the unit ventilator right front access panel)

.875" Dia. Knockouts (3)

SW1-Main Power Nonfused “On-Off” Switch (AAFHermanNelson)

NOTICE

Reverse this cover when unit is removed from wall sleeve to cover opening in the end of switch box.

Field Wiring Harness Locations

The low voltage field wiring connections have all been centrally located within the unit ventilator and are easily accessible. To simplify field connections, multi-pin plugs are factory provided and pre-wired with short wire whips. Each of the wires in these wire whips is capped and should remain capped if not used. To make a field connection simply locate the correct wire, cut the wire cap from the wire and then connect the wire with your field wiring as shown in the field wiring diagrams. All low voltage field wiring connections must be run in shielded cable with the shield drain wires connected as shown in the field wiring diagrams. The following are descriptions of the various options and features that may require field wiring. See the wiring diagram provided on the unit ventilator right front access panel. In addition, those unit ventilators equipped with optional electric heating coil have electric heating coil power connections at right end only.

Wall Sleeve Junction Box

/8" x 35/8" opening (for main power wiring from wall

Rear edge

of wall sleeve

Figure 30. Wall Mounted Temperature Sensor Wiring for Basic Wall Sensor

Unit Ventilator

Connector

GND

AI-2

Comm

AI-1

LED

896

GRN

BLK

WHT

RED

Wire

Caps

sleeve to chassis). Field connection by others.

Control receptacle with plug-in disconnect (AAF HermanNelson to all remote controls.

). Leads are provided for wire nut connection

Wall Sensor

Shield

5 6 4 3 2

Factory Wiring Field Wiring (by Others) External Device (by Others)

(option)

Setpt. Adj. Comm Sensor LED

Page 14 of 32 IM 747

Field Wiring Remote

NOTICE

CAUTION

Mounted Temperature Sensor

Remote Wall Mounted Sensors (Optional)

All MicroTech II™ units come with unit mounted room air temperature sensors as standard. Units can also accept Remote Wall Mounted Room Temperature Sensors for remotely sensing room temperatures.

The UVC is configured for Basic and Expanded remote sensors. To use the Deluxe remote sensor, you must reconfigure the UVC through the LUI. See the LUI menu reference in the appropriate OM for the correct settings. The setpoint will operate incorrectly otherwise when using a Deluxe remote sensor.

All low voltage field wiring connections must be run in shielded cable with the shield drain wires connected as shown in the field wiring diagrams. The following are descriptions of the various options and features that may require field wiring.

Table 16. Remote Wall-Mounted

Sensor Types (optional)

Remote Tenant

Setpoint Override

Adjustment Button

None x x

+/- 3OFxx

55OF to 85OFx x

Status

LED

When using remote wall sensors on wall applications, where the wall may influence the sensor reading, ensure that the remote wall sensor is thermally isolated from the wall.

Figure 31. Basic, Remote Wall-Mounted

Sensor with no adjustment

Figure 32. Expanded Remote Wall-Mounted

Sensor with +/- 3OF adjustment

Figure 33. Deluxe Remote Wall-Mounted

Sensor with 55OF to 85OF adjustment

Table 17. Basic Remote Wall-Mounted Sensor with no adjustment Specifications PN-111048101

Type Passive Positive Temperature Coefficient (PTC) - Silicon Sensing Element Sensing Range -40OF(-40OC) to 212OF(100OC) Reference Resistance 1035 ohms at 77OC(25OC) Accuracy 0.9OF(0.5OC) between 5OF(-15OC) to 167OF(75OC) Adjustment Range None

Table 18. Expanded Remote Wall-Mounted Sensor with +/– 3°F adjustment Specifications PN-111048103

Table 19. Deluxe Remote Wall-Mounted Sensor with 55OF to 85OF adjustment Specifications PN-111048102

When Using A Remote Wall Mounted Temperature Sensor

If a decision is made to use a Remote Wall Mounted Temperature Sensor instead of the unit mounted room air sensor then placement of the Remote Wall Mounted Temperature Sensor is critical for proper room temperature sensing (see figures 35 and 36). The UVC is capable of using one of three remote wall

mounted temperature sensors. Figure 34 shows a 4-wire connection (plus shield drain wire) (see table 20). It is recommended that additional wires be pulled to compensate for potential wire breakage or future options. The Basic Wall Mounted Temperature Sensor requires only 3-wires (plus shield drain wire) since the Basic Wall Mounted Temperature Sensor has no setpoint adjustment (see figure 30).

IM 747 Page 15 of 32

Figure 34. Wall Mounted Temperature Sensor Wiring for Expanded and Deluxe Wall Sensor

Wall Sensor

(option)

1 5 6

Setpt. Adj.

Comm

Sensor

LED

Connector

GND

AI-2

Comm

AI-1 LED

Unit Ventilator

896

GRN

BLK WHT RED

Wire

Caps

Shield

Factory Wiring Field Wiring (by Others) External Device (by Others)

Note:

Unit mounted room air sensors are recommended for most situations to provide optimal unit performance. Unit mounted sensors are factory installed (see figure 9). Remote mounted can be used (see figure 35).

Table 20. Max Sensor Wire Length and

Guage

Maximum sensor wire length for less than 1°F error

Gauge Length

14 AWG 800 ft. (244 m) 16 AWG 500 ft. (152 m)

18 AWG 310 ft. (94 m) 20 AWG 200 ft. (61 m) 22 AWG 125 ft. (38 m)

NOTICE

All MicroTech II equipped unit ventilators are provided as standard with a unit mounted space temperature sensor. The unit mounted temperature sensor is provided with a quick disconnect plug which can be located using the unit electrical schematic. When using a remote wall mounted temperature sensor the unit mounted temperature sensor quick disconnect plug must be separated so that the unit mounted sensor is disconnected from the UVC.

Figure 35-

Interior Wall

Correct

Wall Sensor Locations

Window Exposure

Unit

Interior Wall

Window Exposure

Unit

= Correct Sensor Location

Interior Wall

Window Exposure

Figure 36Locations

Interior Wall

Incorrect

Window Exposure

Unit and Wall Sensor

Unit

Cubicle Wall

Interior Wall

Shelving

Window Exposure

= Incorrect Sensor Location

Shelving

File Cabinet

Unit

Window Exposure

Unit

Window Exposure

Unit

Note:

Avoid placing wall sensor near drafty areas such as doors or windows. Avoid external walls, or dead spots near exposed columns. Avoid direct sunlight on wall sensor.

Page 16 of 32 IM 747

WARNING

DANGER

To avoid electrical shock, personal injury or death, be sure that field wiring complies with local and national fire, safety, and electrical codes, and voltage to the system is within the limits shown in the job-specific drawings and unit electrical data plate(s). Power supply to unit must be disconnected when making field connections. To avoid electrical shock, personal injury or death, be sure to rigorously adhere to field wiring procedures regarding proper lockout and tagout of components.

Installation

This document describes the installation of the following three wall mounted sensor models:

• P/N 111048101

• P/N 111048102

• P/N 111048103

Parts Included - All Models

• pre-assembled sensor that includes:

- large (50.8 x 101.6 mm [2 x 4 in.]) mounting base (1)

- terminal block (1)

- 1.5 mm (1/16 in.) cover screw (1)

- endcaps (2)

• alternate small (80 x 80 mm [3.15 x 3.15 in.]) mounting base (1) with attached terminal block (1)

• cover slider insert with printed logos for McQuay® (1) and AAF® (1)

• No. 6-32 x 1 in. flat-head screw (2)

• No. 8 x 1.25 in. panhead tapping screw (2)

• hollow plastic wall anchor (2)

Parts Included - 111048102 and 111048103 Only

• alternate serrated setpoint dial (attached)

• smooth setpoint dial (separate)

Special Tools Needed

• .5 mm (1/16 in.) Allen wrench

•7 mm (1/4 in.) flat-blade screwdriver

• hole saw with 35 mm (1-3/8 in.) blade (for surface mounting only)

• drill with 8 mm (5/16 in.) drill bit (for surface mounting only)

Mounting

The MicroTech II™ Wall Mount Sensor allows for two mounting methods: wallbox mounting and surface mounting.

Note: Wallbox mounting requires the large mounting base. Use either the large or small mounting base for surface mounting.

6. Fasten the base to the wallbox with the No. 6-32 x 1 in. screws provided.

7. Remove terminal block and wire to the appropriate terminals as shown in ”Wiring”.

IMPORTANT

8. Install terminal block onto sensor with terminal 6 next to the edge of sensor.

9. Replace the sensor and tighten the cover screw.

10. Replace the two endcaps on the mounting base.

Figure 37 - Wallbox Mounting

Performing Surface Mounting Using Large Base

To perform surface mounting using the large base. (Figure 38):

1. Slide the desired cover slider insert onto the sensor until it snaps into place.

2. Remove the two endcaps from the mounting base.

3. Loosen the cover screw using a 1.5 mm (1/16 in.) Allen wrench and remove the sensor.

4. Drill a 35 mm (1-3/8 in.) hole in the surface where the sensor will be mounted.

5. Pull the cable or wiring through the hole.

Figure 38 - Surface Mounting Using Large Base

Performing Wallbox Mounting

To perform wallbox mounting (Figure 37):

1. Slide the desired cover slider insert onto the cover until it snaps into place.

2. Remove the two endcaps from the mounting base.

3. Loosen the cover screw using a 1.5 mm (1/16 in.) Allen wrench and remove the sensor.

4. Pull the cable or wiring through the wallbox and mounting base.

5. Rotate the mounting base until one of the arrows on the base points up and the screw openings in the base align with the threaded holes in the wallbox. If necessary, reposition the cover screw above the arrow.

IM 747 Page 17 of 32

6. Rotate the mounting base until one of the arrows on the base points up. If necessary, reposition the cover screw above the arrow. Place the base against the wall, and mark the screw holes using the base as a template.

7. Drill two 8 mm (5/16 in.) holes at the markings.

8. Insert the hollow plastic wall anchors (Figure 39), position the base, and then drive the two pan-head tapping screws.

9. Pull the wiring through the mounting base.

10. Remove terminal block and wire to the appropriate terminals as shown in “Wiring”.

IMPORTANT

11. Install terminal block onto sensor with terminal 6 next to the edge of sensor.

Figure 40 - Surface Mounting Using Small Base

12. Replace the sensor and tighten the cover screw.

13. Replace the two endcaps on the mounting base.

Figure 39 - Insert Wall Anchors

Performing Surface Mounting Using Small Base

To perform surface mounting using the small base (Figure 40):

1. Slide the desired cover slider insert onto the sensor until it snaps into place.

2. Remove the two endcaps from the mounting base.

3. Remove the cover screw using a 1.5 mm (1/16 in.) Allen wrench and discard it. Remove the sensor.

4. Remove and discard the terminal block from inside the sensor.

5. Drill a 35 mm (1-3/8 in.) hole in the surface where the sensor will be mounted.

6. Pull the cable or wiring through the hole.

7. Place the small base against the wall, (with the arrow on the base pointing up) and mark the screw holes using the base as a template.

8. Drill two 8 mm (5/16 in.) holes at the markings.

9. Insert the hollow plastic wall anchors (Figure 39), position the base, and then drive the two pan-head tapping screws.

10. Pull the wiring through the mounting base.

11.Wire to the appropriate terminals to the small mounting base as shown in “Wiring”.

12. Snap the sensor into the small mounting base (cover screw is not required).

Wiring

NOTICE

It is suggested that shielded cable always be used, however, shielded cable is generally not required, except in electrically noisy environments, such as near gas ignition systems, radar or magnetic resonance imaging equipment, etc. It is the responsibility of others to determine what constitutes an “electrically noisy” environment for each installation. Refer to table 21 or 20 for maximum wire length.

Figure 41 - 111048101 Sensor Wiring

Figure 42 - 111048102 and 111048103 Sensor Wiring

Table 21 - Maximum Wire Length

Maximum Wire Length for Less Than 1°F Error

Wire Gauge Wire Length

14 AWG 800 Ft. (244mm) 16 AWG 500 Ft. (152mm) 18 AWG 310 Ft. (94mm) 20 AWG 200 Ft. (61mm) 22 AWG 125 Ft. (38mm)

Page 18 of 32 IM 747

Setup and Adjustments

Figure 43 - Removing the Standard Setpoint Dial

Switching Setpoint Dials

To switch setpoint dials:

1. Remove the sensor from the mounting base.

2. Rotate the smooth setpoint dial so that it points straight up.

3. As shown in Figure 43, insert the Allen wrench through the hole in the back of the printed wiring board (A) and push gently until the smooth setpoint dial is free.4. Press the serrated setpoint dial into place on the sensor, making sure that the dial points straight up.

5. Replace the sensor on the mounting base.

Repairs and Replacement

No repair options available. Call your local AAF-McQuay representative for sensor replacement.

External Input Option Wiring

The external input options can be one of the following, dependent upon the unit ventilator software model: Unoccupied Signal, Remote Shutdown Signal, Ventilation Lockout Signal, Dewpoint/Humidity Signal, Boiler-less System Kit Signal, or Exhaust Interlock

Figure 44. External Input Wiring Examples with or without Daisy Chaining of Units

Unit Ventilator #1

Connector

GND

Comm

BI-6 BI-5 BI-4

BI-3

Unit Ventilator #2

Connector

GND

Comm

BI-6 BI-5 BI-4 BI-3

Unit Ventilator #3

Connector

GND

Comm

BI-6 BI-5 BI-4 BI-3

896 908A 907A 906A 905A

904A

896

908A 907A 906A 905A 904A

896

908A 907A 906A 905A 904A

Wire Caps

Shield

Additional Units

Signal.

CAUTION

External Input

Option 4 Device

(by Others)

WSHP Boilerless System (low temp switch)

Each of these inputs has been designed such that units can be daisy-chained to one set of dry contacts as shown in figure 44. Size wiring for minimal voltage drop in accordance with local codes.

External Input

Option 3 Device

(by Others)

Ventilation Lockout

(default) or

Exhaust Interlock

Factory Wiring

Field Wiring (by Others) External Device (by Others)

External Input

Option 2 Device

(by Others)

Remote Shutdown

External Input

Option 1 Device

(by Others)

Unoccupied

(default) or

Dewpoint Humidity

Setpoint Dial

External Output Option Wiring

The external output options can be configured as one of the following, dependent upon the unit ventilator software model: Lights On/ Off Signal, Motorized Water Valve Open/ Close, Fault Indication Signal, Pump Restart Signal, Exhaust Fan On/Off Signal, and Auxiliary Heat Signal (see figure 45). Each of these external outputs is connected to the dry contacts of UVC board mounted relays and can be used as a “signal” to operate the 24 VAC coil of a field-installed pilot duty relay as shown. Size wire for minimum voltage drop in accordance with local codes. In the case of the motorized water valve on water source heat pumps, the appropriate output can be used to operate the valve actuator. The second wiring example (see figure 46), shows how multiple units could be connected to a single relay by others.

NOTICE

Not all of the external output options can be used simultaneously. Not all of the external output options can be used on all software models. See the “UVC Input and Output Tables” in order to verify which external output option can be used on which external outputs for each specific software model.

IM 747 Page 19 of 32

NOTICE NOTICE

For correct space control, and proper unit operation, it is important that an occupancy control means be used such that the unit is placed into unoccupied mode during regular low load conditions such as nighttime, weekends and holidays.

NOTICE

Using any of the external input options that are not designated as the “default” option in the “UVC Input and Output Tables” will require field configuration to the UVC using the Local User Interface (LUI) in order to select the non-default external input option be used by the UVC. See the appropriate Software Model-Specific Operation Literature for external input configuration instructions. Do not make final

connections of any external devices to the external inputs when using a non-default external option until you insure that the required configuration is complete. Damage to the equipment and or improper equipment operation can result.

NOTICE

Not all of the external input options can be used simultaneously. Not all of the external input options can be used on all software models. See the “UVC Input and Output Tables” in order to verify which external input option can be used on which external inputs for each specific software model.

Figure 45. External Output Wiring – Single Unit

Unit Ventilator

Connector

UVC

xBO-2

Comm

xBO-1

BO-6 BO-6

Comm

24vac Supply

24vac Comm

The total VA of all field-mounted devices powered by the unit ventilator’s 24 VAC power supply cannot exceed 15 VA. All field connected relays must use 24 VAC Class 2 coils.

Wire

Caps 601A 602A 603A 604A 605A 606A 608A 610A

Shield

Factory Wiring Field Wiring (by Others)

External Device (byOthers)

External Output

Option 1 Device

(by Others)

Lights On/Off

MotorizedWater

Valve Open/Close

CAUTION

Signal

External Output

Option2Device

(by Others)

Fault Indictaion

Pump Restart

Signal

External Output

Option 3 Device

(by Others)

Auxiliary Heat

Signal

ExhaustFan

On/Off Signal

Figure 46. External Output Wiring – Multiple Units Shown

Unit Ventilator #1

UVC

XBO-2 Comm

XBO-1

BO-6 BO-6

Comm

24vac Supply 24vac Comm

Connector

Wire

Caps 601A 602A 603A 604A 605A 606A 608A 610A

Unit Ventilator #2

UVC

XBO-2 Comm

XBO-1

BO-6 BO-6

Comm

24vac Supply 24vac Comm

Connector

Wire

Caps 601A 602A 603A 604A 605A 606A 608A 610A

Unit Ventilator #...X (last unit)

UVC

XBO-2 Comm

XBO-1

BO-6 BO-6

Comm

24vac Supply 24vac Comm

Connector

Wire

Caps 601A 602A 603A 604A 605A 606A 608A 610A

Shield

Additional Units

External Output

Option 2 Device

(by Others)

Fault Indication

Pump Restart

Signal

Factory Wiring Field Wiring (by Others) External Device (by Others)

Page 20 of 32 IM 747

Split-System Condensing Unit Signal Wiring (Model AVS, AVV, AVR, AHF, AHV, AHR)

The UVC and split-system unit ventilator are

Figure 47. Split-System Condensing Unit Signal Wiring

pre-wired to provide a condensing unit On/ Off signal as shown in figure 47.

CAUTION

Condensing unit capacity must be properly sized for proper unit ventilator operation. Unit ventilator damage and or poor space control will result from improperly sized, or oversized condensing units.

CAUTION

The total VA of all field-mounted devices powered by the unit ventilator’s 24 VAC power supply cannot exceed 15 VA. All field connected relays must use 24 VAC Class 2 coils.

UVC

BO-9

Comm

24vac Supply

24vac Comm

Communication Module Wiring (see table 3)

Figure 48. BACnet® Communication Module Wiring Diagram

Split System Unit Ventilator

Connector

607A

608A 610A

Factory Wiring Field Wiring (by Others) External Device (by Others)

Dip Switches

Wire

Caps

Shield

Condensing Unit

On/Off Signal

(24vac)

RT+ (Non-Inverting) RT- (Inverting) RTcom (Reference) Shield

Figure 49. LonWorks® Communication Module Wiring Diagram

ECHELON

SHLD (Shield) A (LON A) B (LON B)

Figure 50. Metasys® N2 Open Communication Module Wiring Diagram

REF (Reference) N2- (Inverting) N2+ (Non-Inverting)

Dip Switches

IM 747 Page 21 of 32

UVC Input and Output Data

All UVC input and output connections and their corresponding unit ventilator usage are shown in the following tables.

Table 23. Inputs and Outputs for Software

Model 0 – Air Source Heat Pump w/Electric Heat

Model 0 Air Source Heat Pump w/ Electric Heat Description

BO-1 Inside Fan High BO-2 Inside Fan Medium BO-3 Electric Heat 1 BO-4 Electric Heat 2 BO-5 Electric Heat 3

External Output Option 3:

BO-6

Fault Indication 2 BO-7 Outside Drain Pan Heater BO-8 Drain-less Condensate Heater 1 BO-9 Compressor BI-1 Condensate Overflow BI-2 BI-3

External Input Option 1: BI-4 Ventilation Lockout (default) or

Exhaust Interlock 3

External Input Option 2: BI-5

Remote Shutdown 3

External Input Option 3: BI-6 Unoccupied (default) or Dewpoint/

Humidity 3 BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 DX Press Switch (NC) AI-1 IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor AI-4 OA Temp Sensor AI-5 IA Coil DX Temp Sensor AI-6 OA Coil DX Temp Sensor

Expansion Board

External Output Option 2: xBO-1

Lights On/Off 2

External Output Option 1: xBO-2

Exhaust Fan On/Off 2 xBO-3 OA Damper Open xBO-4 OA Damper Close xBO-5 xBO-6 Reversing Valve xBO-7 Outdoor Fan xBO-8 Inside Fan Low xAI-1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 xAI-4

1Optional 2Field selectable external output options

(all possible options are shown)

3Field selectable external input options

(all possible options are shown)

Table 24. Inputs and Outputs for Software Models 2 and 3 – Water Source Heat Pump

w/ or w/o Electric Heat

Model 2 Model 3 Water Source Heat Pump w/ Electric Heat Water Source Heat Pump Description Description

BO-1 Inside Fan High Inside Fan High

Inside Fan Medium Inside Fan Medium

BO-2

BO-3 Electric Heat 1 BO-4 Electric Heat 2 BO-5 Electric Heat 3

External Output Option 3: BO-6 Fault Indication (default) or Pump Restart 2 External Output Option 3:

Fault Indication (default) or Pump Restart 2 BO-7 BO-8 BO-9 Compressor Compressor BI-1 Condensate Overflow Condensate Overflow BI-2 BI-3 External Input Option 4: Boiler-less System 3 External Input Option 4: Boiler-less System 3

External Input Option 1: External Input Option 1: BI-4 Ventilation Lockout (default) Ventilation Lockout (default) or Exhaust

or Exhaust Interlock 3 Interlock 3

External Input Option 2: External Input Option 2: BI-5

Remote Shutdown 3 Remote Shutdown 3

External Input Option 3: External Input Option 3: BI-6

Unoccupied (default) or Dewpoint/Humidity 3 Unoccupied 3 BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 DX Press Switch (NC) DX Press Switch (NC) AI-1 IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor DA Temp Sensor AI-4 OA Temp Sensor OA Temp Sensor AI-5 IA Coil DX Temp Sensor IA Coil DX Temp Sensor AI-6 Water Coil DX Temp Sensor Water Coil DX Temp Sensor

Expansion Board

External Output Option 2: External Output Option 2: xBO-1 Lights On/Off (default) or Motorized Water Lights On/Off (default) or Motorized Water

Valve 2 Valve 2

External Output Option 1: External Output Option 1: xBO-2 Exhaust Fan On/Off 2 Exhaust Fan On/Off (default) or Auxiliary

Heat 2 xBO-3 OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close xBO-5 xBO-6 Reversing Valve Reversing Valve xBO-7 xBO-8 Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4 Water-out Temp Sensor Water-out Temp Sensor

1Optional 2Field selectable external output options (all possible options are shown) 3Field selectable external input options (all possible options are shown)

Page 22 of 32 IM 747

Table 25. Inputs and Outputs for Software Models 4 – DX Cooling w/Electric Heat, 5 – DX Cooling Only,

and 6 – Electric Heat Only

Model 4 Model 5 Model 6 DX Cooling w/ Electric Heat DX Cooling Only Electric Heat Only

Description Description Description

BO-1 Inside Fan High Inside Fan High Inside Fan High BO-2 Inside Fan Medium Inside Fan Medium Inside Fan Medium BO-3 Electric Heat 1 Electric Heat 1 BO-4 Electric Heat 2 Electric Heat 2 BO-5 Electric Heat 3 Electric Heat 3

BO-6

BO-7 BO-8 BO-9 Compressor 5 Compressor 5 BI-1 Condensate Overflow Condensate Overflow BI-2 BI-3

BI-4 Ventilation Lockout (default) or Ventilation Lockout (default) or Ventilation Lockout (default) or

BI-5

BI-6 Unoccupied (default) or Unoccupied 3 Unoccupied 3

BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 DX Press Switch (NC) 4 DX Press Switch (NC) 4 AI-1 IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor DA Temp Sensor DA Temp Sensor AI-4 OA Temp Sensor OA Temp Sensor OA Temp Sensor AI-5 IA Coil DX Temp Sensor IA Coil DX Temp Sensor AI-6 OA Coil DX Temp Sensor 6 OA Coil DX Temp Sensor 6

xBO-1

xBO-2 Exhaust Fan On/Off 2 Exhaust Fan On/Off (default) or Exhaust Fan On/Off 2

xBO-3 OA Damper Open OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close OA Damper Close xBO-5 xBO-6 xBO-7 Outdoor Fan 6 Outdoor Fan 6 xBO-8 Inside Fan Low Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4

External Output Option 3: External Output Option 3: External Output Option 3: Fault Indication 2 Fault Indication 2 Fault Indication 2

External Input Option 1: External Input Option 1: External Input Option 1:

Exhaust Interlock 3 Exhaust Interlock 3 Exhaust Interlock 3 External Input Option 2: External Input Option 2: External Input Option 2: Remote Shutdown 3 Remote Shutdown 3 Remote Shutdown 3 External Input Option 3: External Input Option 3: External Input Option 3:

Dewpoint/Humidity 3

Expansion Board

External Output Option 2: External Output Option 2: External Output Option 2: Lights On/Off 2 Lights On/Off 2 Lights On/Off 2 External Output Option 1: External Output Option 1: External Output Option 1:

Auxiliary Heat 2

1Optional

2Field selectable external output options (all possible options are shown)

3Field selectable external input options (all possible options are shown)

4 DX pressure switch not installed on split-systems, this input will then be wired for constant no-fault condition

5 This is the condensing unit on/off signal on split-systems

6Not installed nor wired on split-systems

IM 747 Page 23 of 32

Table 26. Inputs and Outputs for Software Models 7 – DX Cooling w/Wet Heat - Valve

Control, and 8 – DX Cooling w/Wet Heat - F&BP Damper Control

Model 7 Model 8 DX Cooling w/ Wet Heat – Valve Control DX Cooling w/ Wet Heat – F&BP Damper Control Description Description

BO-1 Inside Fan High Inside Fan High BO-2 Inside Fan Medium Inside Fan Medium BO-3 BO-4 BO-5

BO-6

BO-7 Wet Heat EOC Valve (NO) 9 BO-8 BO-9 Compressor 5 Compressor 5 BI-1 Condensate Overflow Condensate Overflow BI-2 BI-3 Low Air Temperature Thermostat (NC) 7 Low Air Temperature Thermostat (NC) 7

BI-4 Ventilation Lockout (default) or Ventilation Lockout (default) or

BI-5

BI-6 Unoccupied (default) or Unoccupied 3

BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 DX Press Switch (NC) 4 DX Press Switch (NC) 4 AI-1 IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor DA Temp Sensor AI-4 OA Temp Sensor OA Temp Sensor AI-5 IA Coil DX Temp Sensor IA Coil DX Temp Sensor AI-6 OA Coil DX Temp Sensor 6 OA Coil DX Temp Sensor 6

xBO-1

xBO-2 Exhaust Fan On/Off (default) or Exhaust Fan On/Off (default) or

xBO-3 OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close xBO-5 Wet Heat Valve Open F&BP Damper Open Face xBO-6 Wet Heat Valve Close F&BP Damper Close Face xBO-7 Outdoor Fan 6 Outdoor Fan 6 xBO-8 Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4

External Output Option 3: External Output Option 3: Fault Indication 2 Fault Indication 2

External Input Option 1: External Input Option 1:

Exhaust Interlock 3 Exhaust Interlock 3 External Input Option 2: External Input Option 2: Remote Shutdown 3 Remote Shutdown 3 External Input Option 3: External Input Option 3:

Dewpoint/Humidity 3

Expansion Board

External Output Option 2: External Output Option 2: Lights On/Off 2 Lights On/Off 2 External Output Option 1: External Output Option 1:

Auxiliary Heat 2 Auxiliary Heat 2

1Optional

2Field selectable external output options (all possible options are shown)

3Field selectable external input options (all possible options are shown)

4 DX pressure switch not installed on split-systems, this input will then be wired for constant no-fault condition

5 This is the condensing unit on/off signal on split-systems

6Not installed or wired on split-systems

7 This thermostat is not installed on units with steam coils, this input will then be wired for constant no-fault condition

9End of Cycle (EOC) valve is required for proper unit operation and space control

Page 24 of 32 IM 747

Table 27. Inputs and Outputs for Software Models 9 – 2-pipe Wet Heat Only – Valve Control, 10 – 2-pipe Wet Heat Only – F&BP Damper

Control, 11 – 2-pipe Heat/Cool Valve Control, and 12 – 2-pipe Heat/Cool – F&BP Damper Control

Model 9 Model 10 Model 11 Model 12 2-pipe Wet Heat Only – 2-pipe Wet Heat Only – 2-pipe Chilled Water/Hot Water 2-pipe Chilled Water/Hot Water

Valve Control F&BP Damper Control Valve Control F&BP Damper Control

BO-1 Inside Fan High Inside Fan High Inside Fan High Inside Fan High BO-2 Inside Fan Medium Inside Fan Medium Inside Fan Medium Inside Fan Medium BO-3 BO-4 BO-5

BO-6

BO-7 Wet Heat EOC Valve (NO) 9 Heat/Cool EOC Valve (NO) 9 BO-8 BO-9 BI-1 Condensate Overflow Condensate Overflow BI-2 BI-3 Low Air Temperature Low Air Temperature Low Air Temperature Low Air Temperature

BI-4 Ventilation Lockout (default) or Ventilation Lockout (default) or Ventilation Lockout (default) or Ventilation Lockout (default) or

BI-5

BI-6 Unoccupied 3 Unoccupied 3 Unoccupied (default) or Unoccupied (default) or

BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 AI-1 IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor DA Temp Sensor DA Temp Sensor DA Temp Sensor AI-4 OA Temp Sensor OA Temp Sensor OA Temp Sensor OA Temp Sensor AI-5 AI-6 Water-in Temp Sensor Water-in Temp Sensor

xBO-1

xBO-2 Exhaust Fan On/Off (default) or Exhaust Fan On/Off (default) or Exhaust Fan On/Off (default) or Exhaust Fan On/Off (default) or

xBO-3 OA Damper Open OA Damper Open OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close OA Damper Close OA Damper Close xBO-5 Wet Heat Valve Open F&BP Damper Open Face Heat/Cool Valve Open F&BP Damper Open Face xBO-6 Wet Heat Valve Close F&BP Damper Close Face Heat/Cool Valve Close F&BP Damper Close Face xBO-7 xBO-8 Inside Fan Low Inside Fan Low Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4

External Output Option 3: External Output Option 3: External Output Option 3: External Output Option 3: Fault Indication 2 Fault Indication 2 Fault Indication 2 Fault Indication 2

Thermostat (NC) 7 Thermostat (NC) 7 Thermostat (NC) Thermostat (NC) External Input Option 1: External Input Option 1: External Input Option 1: External Input Option 1:

Exhaust Interlock 3 Exhaust Interlock 3 Exhaust Interlock 3 Exhaust Interlock 3 External Input Option 2: External Input Option 2: External Input Option 2: External Input Option 2: Remote Shutdown 3 Remote Shutdown 3 Remote Shutdown 3 Remote Shutdown 3 External Input Option 3: External Input Option 3: External Input Option 3: External Input Option 3:

Dewpoint/Humidity 3 Dewpoint/Humidity 3

Expansion Board

External Output Option 2: External Output Option 2: External Output Option 2: External Output Option 2: Lights On/Off 2 Lights On/Off 2 Lights On/Off 2 Lights On/Off 2 External Output Option 1: External Output Option 1: External Output Option 1: External Output Option 1:

Auxiliary Heat 2 Auxiliary Heat 2 Auxiliary Heat 2 Auxiliary Heat 2

1Optional

2Field selectable external output options (all possible options are shown)

3Field selectable external input options (all possible options are shown)

7 This thermostat is not installed on units with steam coils, this input will then be wired for constant no-fault condition

9End of Cycle (EOC) valve is required for proper space control

IM 747 Page 25 of 32

Table 28. Inputs and Outputs for Software Models 13 – 4-pipe Heat/Cool – Valve Control, and

14 – 4-pipe Heat/Cool – F&BP Damper Control

Model 13 Model 14 4-pipe Chilled Water & Wet Heat -Valve Control Description Description

BO-1 Inside Fan High Inside Fan High BO-2 Inside Fan Medium Inside Fan Medium BO-3 BO-4 BO-5

BO-6

BO-7 Cool Valve Open Wet Heat EOC Valve (NO) 9 BO-8 Cool Valve Close Cool EOC Valve (NC) 9 BO-9 BI-1 Condensate Overflow Condensate Overflow BI-2 BI-3 Low Air Temperature Thermostat (NC) Low Air Temperature Thermostat (NC)

BI-4 Ventilation Lockout (default) or Ventilation Lockout (default) or

BI-5

BI-6 Unoccupied (default) or Unoccupied (default) or

BI-7 BI-8 BI-9 BI-10 BI-11 BI-12 AI-1 IA Temp. Sensor + T.O. IA Temp. Sensor + T.O. AI-2 Remote Setpt. Adjust. Pot. Remote Setpt. Adjust. Pot. AI-3 DA Temp Sensor DA Temp Sensor AI-4 OA Temp Sensor OA Temp Sensor AI-5 AI-6

xBO-1

xBO-2 Exhaust Fan On/Off (default) Exhaust Fan On/Off (default)

xBO-3 OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close xBO-5 Wet Heat Valve Open F&BP Damper Open Face xBO-6 Wet Heat Valve Close F&BP Damper Close Face xBO-7 xBO-8 Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4

External Output Option 3: External Output Option 3: Fault Indication 2 Fault Indication 2

External Input Option 1: External Input Option 1:

Exhaust Interlock 3 Exhaust Interlock 3 External Input Option 2: External Input Option 2: Remote Shutdown 3 Remote Shutdown 3 External Input Option 3: External Input Option 3:

Dewpoint/Humidity 3 Dewpoint/Humidity 3

Expansion Board

External Output Option 2: External Output Option 2: Lights On/Off 2 Lights On/Off 2 External Output Option 1: External Output Option 1:

or Auxiliary Heat 2 or Auxiliary Heat 2

4-pipe Chilled Water & Wet Heat-F&BP Damper Control

1Optional

2Field selectable external output options (all possible options are shown)

3Field selectable external input options (all possible options are shown)

9End of Cycle (EOC) valve is required for proper space control

Page 26 of 32 IM 747

Table 29. Inputs and Outputs for Software Models 15 – 2-pipe Cooling Only – Valve Control, 16 – 2-pipe Cooling Only – F&BP Damper Control,

17 – 2-pipe Cooling - Valve Control w/Electric Heat, and 18 – 2-pipe Cooling - F&BP Damper Control w/Electric Heat

Model 15 Model 16 Model 17 Model 18 2-pipe Chilled Water Only – 2-pipe Chilled Water Only – Valve Control2-pipe Cooling – F&BP Damper Control Valve Control w/ Electric Heat Damper Control w/ Electric Heat Description Description Description Description

BO-1 Inside Fan High Inside Fan High Inside Fan High Inside Fan High BO-2 Inside Fan Medium Inside Fan Medium Inside Fan Medium Inside Fan Medium BO-3 Electric Heat 1 Electric Heat 1 BO-4 Electric Heat 2 Electric Heat 2 BO-5 Electric Heat 3 Electric Heat 3

BO-6

BO-7 Cool Valve Open Cool Valve Open BO-8 Cool Valve Close Cool EOC Valve (NC) 8 Cool Valve Close Cool EOC Valve (NC) 9 BO-9 BI-1 Condensate Overflow Condensate Overflow Condensate Overflow Condensate Overflow BI-2 BI-3 Low Air Temperature Low Air Temperature Low Air Temperature Low Air Temperature

BI-4 Ventilation Lockout (default) Ventilation Lockout (default) Ventilation Lockout (default) Ventilation Lockout (default)

BI-5 External Input Option 2: External Input Option 2: External Input Option 2: External Input Option 2:

BI-6 Unoccupied 3 Unoccupied (default) or Unoccupied (default) or Unoccupied (default) or

xBO-1

xBO-2 Exhaust Fan On/Off (default) Exhaust Fan On/Off (default) Exhaust Fan On/Off 2 Exhaust Fan On/Off 2

xBO-3 OA Damper Open OA Damper Open OA Damper Open OA Damper Open xBO-4 OA Damper Close OA Damper Close OA Damper Close OA Damper Close xBO-5 F&BP Damper Open Face F&BP Damper Open Face xBO-6 F&BP Damper Close Face F&BP Damper Close Face xBO-7 xBO-8 Inside Fan Low Inside Fan Low Inside Fan Low Inside Fan Low xAI-1 IA Humidity Sensor 1 IA Humidity Sensor 1 IA Humidity Sensor 1 IA Humidity Sensor 1 xAI-2 OA Humidity Sensor 1 OA Humidity Sensor 1 OA Humidity Sensor 1 OA Humidity Sensor 1 xAI-3 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 Indoor CO2 Sensor 1 xAI-4

External Output Option 3: External Output Option 3: External Output Option 3: External Output Option 3: Fault Indication 2 Fault Indication 2 Fault Indication 2 Fault Indication 2

Thermostat (NC) Thermostat (NC) Thermostat (NC) Thermostat (NC) External Input Option 1: External Input Option 1: External Input Option 1: External Input Option 1:

or Exhaust Interlock 3 or Exhaust Interlock 3 or Exhaust Interlock 3 or Exhaust Interlock 3

Remote Shutdown 3 Remote Shutdown 3 Remote Shutdown 3 Remote Shutdown 3 External Input Option 3: External Input Option 3: External Input Option 3: External Input Option 3:

Dewpoint/Humidity 3 Dewpoint/Humidity 3 Dewpoint/Humidity 3

Expansion Board

or Auxiliary Heat 2 or Auxiliary Heat 2

2-pipe Chilled Water & Electric Heat –

2-pipe Chilled Water & Electric Heat – F&BP

1Optional

2Field selectable external output options (all possible options are shown)

3Field selectable external input options (all possible options are shown)

8End of Cycle (EOC) valve is strongly recommended for proper space control

9End of Cycle (EOC) valve is required for proper space control

IM 747 Page 27 of 32

UVC Configuration Parameters

The UVC has been provided with a number of configuration variables as listed in the following table. For a description of supported network variables for each protocol refer to Protocol Data Packet bulletin, see Table 3.

Ta ble 30. Unit Ventilator Software Configuration/Variables

Configuration

Parameter Name

Occupied Cooling Setpoint OCS 73°F(23°C) xxxx xx x xxxxx xxx xx xx Standby Cooling Setpoint SCS 77°F (25°C) xxxx xx x xxxxx xxx xx xx Unoccupied Cooling Setpoint UCS 82°F (28°C) xxxx xx x xxxxx xxx xx xx Occupied Heating Setpoint OHS 70°F (21°C) xxxx xx x xxxxx xxx xx xx Standby Heating Setpoint SHS 66°F (19°C) xxxx xx x xxxxx xxx xx xx Unoccupied Heating Setpoint UHS 61°F (16°C) xxxx xx x xxxxx xxx xx xx

Location Label

Local Bypass Time Tenant Override 240 min x x x x x x x xxxxx xxx xx x Space CO2 Setpoint CO2S 1200 PPM x x x x x x x xxxxx xxx xx x

Space Humidity Setpoint RHS and passive dehumidification 60% RH x x x x x x x x x x x

Emergency Heat Enable auxiliary heat where primary 1 x x x x x x x xxxxx xxx xx xx

Emergency Heat Setpoint EHS 54°F (12°C) xxxx xx x xxxxx xxx xx xx Emergency Heat 0 = no emergency heat during Shutdown Configuration

Wall Sensor Type 0 = +/- 3°F, 1 = 55°F to 85°F0xxxx xx x xxxxx xxx xx xx

Slave Type Configuration

OAD Min Position (this variable will be factory set High-Speed Setpoint OADH to 5% open when the unit is 20% open x x x x x x x xxxxx xxx xx xx

OAD Min Position Med-Speed Setpoint OAD Min Position Low-Speed Setpoint Exhaust Interlock OAD OA damper minimum position Min Position Setpoint EOAD when the exhaust interlock 100% open x x x x x x x xxxxx xxx xx xx

Energize Exhaust Fan defines position above which OAD Setpoint OADE exhaust fan output will be 10% open x x x x x x x xxxxx xxx xx xx

OAD Max Position Setpoint OAMX 100% open x x x x x x x xxxxx xxx xx xx OAD Lockout Enable 0 = disable, 1 = enable (this

OAD Lockout Setpoint OALS closed (this variable will be 36°F (2°C)

Economizer Enable 0 = disable, 1 = enable 1 x x x x x x x xxxxx xxx xx xx Economizer OA Temp Setpoint Economizer IA/OA Temp Differential Economizer Compare DO NOT USE (this variable will Differential be removed in future application 0°F (0°C) xxxx xx x xxxxx xxx xx xx

Abr. Notes Default 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

usable for network installations to store descriptive physical unit information (i.e. room number, etc.)

used with both active (reheat)

sequences 0 = disable, 1 = enable (uses

heat is not applicable)

shutdown,1 = available emergency heat during shutdown

0 = independent slave, 1 = dependent slave

ordered with optional CO2 DCV)

OADM 30% open x x x x x x x xxxxx xxx xx xx

OADL 35% open x x x x x x x xxxxx xxx xx xx

input is energized

energized

variable will be factory set to 1 when the unit is ordered as a recirc unit with no OAD) OA temperature below which the OA damper will remain

factory set to –99°C when the unit is ordered as a recirc unit with no OAD)

ETS 68°F (20°C) xxxx xx x xxxxx xxx xx xx

ETD 2°F (1°C) xxxx xx x xxxxx xxx xx xx

releases)

0xxxxxxxxxxxx xxx xx xx

UV1

UV2 UV3 UV4 UV5 UV6 UV7

xxxx xx x xxxxx xxx xx x

xxxx xx x xxxxx xxx xx xx

Software Model

IM 747 Page 28 of 32

Ta ble 30. Unit Ventilator Software Configuration/Variables (Continued)

UV1 UV2 UV3 UV4 UV5 UV6 UV7

Configuration

Parameter Name

Economizer OA Enthalpy Setpoint (58kJ/kg) Economizer IA/OA Enthalpy Differential External BI-1 Configuration 0 = Unoccupied,

External BI-3 Configuration 0 = Ventilation Lockout,

External BO-1 Configuration 0 = Lights On/Off,

External BO-2 Configuration 0 = Fault Indication,

External BO-3 Configuration 0 = Auxiliary Heat,

Filter Alarm Enable 0 = disable, 1 = enable 0 x x x x x x x x xxxx xx xxx xx Filter Change Hours Setpoint fan run hours between filter

Primary Cool Proportional Band Primary Cool Integral Time 180 sec x x x x x x x x xxxx xx xxx x Secondary Cool Proportional Band Secondary Cool Integral Time 600 sec x x x x x x x x x x x x x x x Primary Heat Proportional Band Primary Heat Integral Time 600 sec x x x x x x x xxxx xx x x Secondary Heat Proportional Band Secondary Heat Integral Time 600 sec x x Discharge Air Temp 13.5°F Proportional Band (7.5°C) Discharge Air Temp Integral Time CO2 Proportional Band  100 PPM x x x x x x x x xxxx xx xxx x CO2 Integral Time  600 sec x x x x x x x x xxxx xx xxx x Ventilation Cooling Low Limit Setpoint Mechanical Cooling Low discharge air low limit during Limit Setpoint MCLL mechanical (compressor or 45°F (7°C) x x xxx xx xxxxxxx xx

Discharge Air High Limit DAHL Motorized Water Valve Delay

Passive Dehum Temp cooling setpoint used during 72°F (22°C) Setpoint  passive dehumidification Passive Dehum F&BP maximum F&BP damper face Damper Max  position during passive 20% face x x x

Space Fan On Delay 10 sec x x x Space Fan Off Delay 30 sec x x x x x x x x xxxx xx xxx x

Fan Cycling Configuration

Space Fan Speed example: 6/60min = 10 min. Changes Per Hour

Space Fan Run Time Reset reset total run time: 1 = reset

Compressor Run Time Reset reset total run time: 1 = reset

Abr. Notes Default 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

EES

EED

1 = Dewpoint/Humidity

1 = Exhaust Interlock

1 = Motorized Water Valve

1 = Pump Restart

Exhaust Fan On/Off

change alarms

discharge air low limit during

VCLL

ventilation or economizer cooling

hydronic) cooling

compressor delay to allow a filed installed motorized water 0 sec x x x valve to open

dehumidification

space fan operation during occupied, standby and bypass occupancy modes: 2 = continuous, 3 = cycle

(maximum of 1 fan speed change 6 every 10 min when fan in auto)

(you must return the variable back to 0 after reset)

25btu/lb

1.3btu/lb (3kJ/kg)

700 hrs x x x x x x x x xxxx xx xxx x

18°F (10°C) xxxxxxxxxxxx xx xxx x

11°F (6°C) x x xxx xx xxxxxxxx

11°F (6°C) xxxx xx x xxxx xx x x

11°F (6°C) x x

900 sec x x x x x x x x xxxx xx xxx x

54°F (12°C) xxxxxxxxxxxx xx xxx xx

140°F (60°C)

xxxxxxxxxxxx xx xxx xx

0xx x x xxxxxxxx

0xxxxx xx x xxxx xx xxx xx

0xx xx

0xxxxxxxx xx x xx

xxxxxxxxxxxx xx xxx x

2xxxxx xx x xxxx xx xxx xx

xxxxxxxxxxxx xx xxx x

xxxxx xx

Software Model

xxx

IM 747 Page 29 of 32

Ta ble 30. Unit Ventilator Software Configuration/Variables (Continued)

Software Model

UV1 UV2 UV3 UV4 UV5 UV6 UV7

Configuration

Parameter Name

Compressor Enable 0 = disable, 1 = enable 1 x x x x x x x x Compressor Minimum On Time Compressor Minimum Off Time Compressor Cooling Lockout Setpoint compressor cooling is not 61°F (16°C) x x x x x x x

Compressor Heating Lockout Setpoint

Compressor Envelope 55°F (12.8°C) x x x x x Cool Max In 55°F (12.8°C) x x Compressor Envelope 28°F (-2.2°C) x x x x x Cool Min In 28°F (-2.2°C) x x Compressor Envelope 150°F (65.6°C) x x x x x Cool Max Out 150°F (65.6°C) x x Compressor Envelope 50°F (10.0°C) x x x x x Cool Min Out 50°F (10.0°C) x x Compressor Envelope 0.2 x x x x x Cool Max Ratio 0.2 x x Compressor Envelope 36°F (2.3°C) x x x x x Cool Max Offset 36°F (2.3°C) x x Compressor Envelope 0.0 x x x x x Cool Min Ratio 0.0 x x Compressor Envelope 28°F (-2.2°C) x x x x x Cool Min Offset 28°F (-2.2°C) x x Compressor Envelope 150°F (65.6°C) x Heat Max In 150°F (65.6°C) x x Compressor Envelope 50°F (10°C) x Heat Min In 45°F (7.2°C) x x Compressor Envelope 55°F (12.8°C) x Heat Max Out 55°F (12.8°C) x x Compressor Envelope 10°F (-12.2°C) x Heat Min Out 28°F (-2.2°C) x x Compressor Envelope 0.0 x Heat Max Ratio 0.0 x x Compressor Envelope 150°F (65.6°C) x Heat Max Offset 150°F (65.6°C) x x Compressor Envelope 1.0 x Heat Min Ratio 1.2 x x Compressor Envelope 52°F (11.1°C) x Heat Min Offset 47.5°F (8.6°C) x x Defrost Setpoint 37°F (3°C) x Defrost Time Limit 5 min x Defrost Reset Setpoint 45°F (7°C) x

EOC OAT Low Setpoint EOCS the EOC valve will 39°F (4°C) x x x x x x x

Source (Water-in) Temp Differential WITD

Auxiliary Heat Start Differential

Auxiliary Heat End Differential AHED degrees above auxiliary heat

Auxiliary Heat Configuration

Abr. Notes Default 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

180 sec x x x x x x x

OA temperature below which

CCLO

allowed OA temperature below which

CHLO compressor heating is 25°F (-4°C) x x

not allowed

OA temperature below which

remain open differential required between space temperature and source (water in) temp to allow hydronic heating or cooling

AHSD

degrees below effective heating setpoint where auxiliary heat ends

start point where auxiliary heat ends 0 = normally open heat device, (hot water valve, etc.) 1 = normally closed heat device (electric heat, etc.)

5°F (3°C) x x x

2°F (1°C) x x x x xx xxx xxx x

2°F (1°C) x x x x x xxx xxx x x

xxxxxxxx xxx x x

IM 747 Page 30 of 32

Ta ble 30. Unit Ventilator Software Configuration/Variables (Continued)

Software Model

UV1 UV2 UV3 UV4 UV5 UV6 UV7

Configuration

Parameter Name

Space Humidity Sensor Enable

Outdoor Humidity 0 = disable, 1 = enable (this Sensor Enable

OAD Stroke Time 90 sec x x x x x x x x x x x x x x x x x x F&BP Damper Stroke Time 95 sec x x x x x x WH or CW/HW Valve Stroke Time CW Valve Stroke Time 76 sec x x x x x

Split-System OA/DX Coil Temp

Application Name and Version Label

Compressor Start Delay

Outdoor Fan On Delay 10 sec x x x x x x x



Abr. Notes Default 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

0 = disable, 1 = enable (this variable will be factory set to 1 when the unit is ordered with optional humidity sensor)

variable will be factory set to 1 when the unit is ordered with optional humidity sensor)

used on split-system units only to partially disable the compressor envelope by setting the outside condensing unit DX coil temperature to a fixed valid value. Enter 122°F (50OC) split-systems. For self-contained units use 327.67 (default).

adjust the compressor delay used to prevent multiple compressorized units from starting simultaneously (each unit or group of units should have a different delay setting)

for

0xxxxxxx xx xxx xxx xxx

76 sec x x x x x x

327.67 x x x x x

xxxxxxxxxxxx xxx xxx

0 sec x x x x x x x

 Parameters accessible through the LUI 

Requires optional equipment

NOTES

IM 747 Page 31 of 32

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.mcquay.com.

IM 747 (7/02)

McQuay AHB Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual