Water Furnace Aurora User manual

Integrated Aurora Controls for Versatec 700 Indoor DOAS Applications

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC

700 INDOOR DOAS APPLICATIONS

ICM2701EW 01/22

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Table of Contents

Overview & Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Aurora Energy Controls Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Safety Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Control Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Control Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Configuration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Sensor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Overview & Features

BACnet

ModBus

Stand-alone

BAS

Rnet

Modbus

AURORA SYSTEM

AURORA PREMIUM

ECONOMIZER & SENSORS

AURORA TOUCH HMI

AURORA

ENERGY

SENSORS

Ethernet

Integrated Controls Platform

The Versatec DOAS unit operates on the Aurora Controls Network (ACN) which brings together different technologies

such as variable speed compressors, direct drive ECM plenum fans, electronic expansion valves, CFM control, and total

energy recovery to provide a complete DOAS unit. The Versatec DOAS control platform consists of the Aurora System

controller, Aurora Energy Control (AEC), and Aurora Premium. The AEC is a complete microprocessor which functions

as the state engine management of the air-to-air energy recovery equipment. It controls the operation of the energy

wheel, bypass dampers, exhaust blowers, and reads any sensors that are enabled on the energy recovery unit. It also

provide safety features of the energy recovery unit. The Aurora Heat Pump control provides state engine management

for the variable speed heat pump system. It will communicate to the supply blower, inverter board, and other communi-

cating devices or sensors that are enabled on the heat pump. The Aurora DOAS controller is the application controller

that provides all the decision making for the DOAS unit, provides setpoints and overrides to the heat pump and energy

recovery units.

• Simpliﬁed diagnostics for the DOAS system with

intuitive large touch screen display with the Aurora

Touch Tablet2

• All sensors communicate over modbus and are

reportable to the BAS

• Full Integration with Aurora Controls Network

• Hot gas modulating reheat with head pressure control

• Preheat output signal with conﬁgurable outdoor air

temperature limits

• Economizer operation with factory installed outdoor

air and exhaust air bypass dampers.

• Intelligent sensors at each station on the air-to-air

energy recovery device.

• CFM control

• Advanced Dehumidiﬁcation

• Multi-Zone VAV

• Single Zone VAV

• CAV

• Demand controlled ventilation

• Drybulb/Enthalpy controlled economizer operation

• Supply Air Temperature Reset

• Remote Supply Air Temperature Reset

• Aurora DOAS Controller Secondary Operation

• Building Pressure Control

• BACnet MS/TP and IP capable

• Network controlled CFM

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

DOAS Applications

100% Outdoor Air

The Versatec DOAS unit is designed to ﬁt a

range of variable air volume (VAV) applica-

tions such as single-zone VAV, multi-zone VAV,

and constant air volume (CAV).

Single-Zone VAV

Single-zone VAV systems have typically been

used in larger zones with higher populated areas

with variable cooling loads such as churches,

meeting rooms, gymnasiums, etc. Single-zone

VAV combines aspects of multi-zone VAV and

constant air volume (CAV) applications to serve a single-

zone/space by using temperature setpoints to enable cooling/heating/dehumidification

mode. This application does not contain VAV boxes and the supply blower will operate to maintain the space temperature

in the zone.

Multi-Zone VAV

For multi-zone applications, the controller is configured to control the supply fan to maintain a duct static pressure setpoint.

The variable speed compressor will operate to either a leaving air temperature or evaporator coil temperature in cases where

the unit is equipped with modulating hot gas reheat. In cases with modulating hot gas reheat, the reheat valve will operate

off of a PID that controls to a leaving air temperature setpoint.

Multi-zone VAV units can be applied in a variety of ways such as operating off of BACnet from a BAS controller or stand-alone

operation with or without a thermostat

Constant Air Volume (CAV)

By adjusting the duct static pressure setpoint in the Aurora Premium control to constant, it can turn the VAV controller into

a CAV control application. With the exception of the blower modulation, the system will control the compressor to a leaving

air temperature and operate with all of the same input configuration points.

Model Shown: DAS360

Multi-zone VAV application for office building

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Each Versatec DOAS unit comes with optional controls packages that are included in the energy recovery device which is

represented by the Aurora Energy Controls. These packages are detailed below. Airside economizer functionality can be

added to any of the packages below by adding air bypass dampers.

Aurora Base Energy (“N”)

The Aurora Base Energy is the standard controls package that includes the necessary sensors on the energy recovery

device for DOAS operation. These sensors are listed below.

Aurora Advanced Energy (“P”)

The Aurora Advanced Energy adds additional features to the Aurora Base Energy as described below.

Aurora Premium Energy (“Q”)

The Aurora Premium adds more sensors to the Aurora Advanced as described below.

Aurora Energy Control Packages

Description Type ERW FAV

Outdoor Air Enthalpy Sensor AEC/Modbus X

Return Air Enthalpy Sensor AEC/Modbus X

Entering Wheel Temperature AEC/Analog X

Leaving Wheel Temperature AEC/Analog X

Building Static Pressure Variable BAS Network variable

Demand Controlled Ventilation BAS Network variable

Supply Blower CFM Measurement X

Exhaust Blower CFM Measurement X

Preheat Output Signal AEC/24 VAC

Supply Air Temperature Sensor Field Installed RNet

Description Type ERW FAV

Exhaust Air Enthalpy Sensor AEC/Modbus X

Optical Wheel Rotation Sensor AEC/Analog X

Description Type ERW FAV

Exhaust Filter Differential Pressure AEC/Modbus X

CO2 Return Air Sensor AEC/Modbus X

Wheel Differential Pressure AEC/Modbus X

Supply Filter Differential Pressure AEC/Modbus X

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Safety Features

The following safety features are provided to protect the

energy recovery device, wiring, and other components from

damage caused by operation outside of design conditions.

Fuse – A 3 amp automotive type plug-in fuse provides

protection against short circuit or overload conditions.

Over/under voltage – An over/under voltage condition

exists when the control voltage is outside the range of 18

VAC to 30 VAC.

Low OAT shutdown – Low OAT shutdown will de-activate

all outputs based on a the Low OAT threshold temperature.

This is a configured setting to prevent operation in

undesirable conditions.

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Layout - Aurora Premium (ERW Cabinet)

Layout - Aurora System Controller & AEC (ERW Cabinet)

Aurora Touch HMI

Aurora Energy Control (AEC)Aurora System Controller & AEC (ERW

Cabinet)

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Layout - Aurora Premium (FAV Heat Pump Controls)

CC2

Factory

Fault

ALG

ALM

ACC c

Status

AuroraTM Base

Control

RV – K1

CC2

CC – K2

CC Hi – K3

Fan – K4

Alarm – K5

Acc – K6

ACC no

ACC nc

O/B

3A-Fuse

O/B

CCG

FP2

FP1

REV

CFM

PWM

ECM PWM

Factory

Factory Fan Connection

(-)

(+)

RS 485

EH2

EH1

(+)

(-)

RS485

Exp Factory

Com1

Com2

Config

SW1 Test

FP1 – 15oF/30oF

JW2 - Alarm

P11

P2 P1

SW2

P13

P4 FP2 – 15oF/30oF

RV – B/O

ACC

– Dip

ACC

– Dip

CC – Dual/Single

L – Pulse/Continuous

Reheat/Normal

Factory Use

Field ConnectionsField Connections

FP1

Off On

N/A

RS485 NET

EH1

LED 1

LED 3

LED 2

LED 5

LED 4

SCT SUC P

MOTOR

RS485

ZONE

ABC

STEPPER ANA SPR DH DIV

COM

P12 P10 P5 P11

(-)

(+)

(-)

(+)

(-)

(+)

P4 P2

K2K3

HA2 HA1 SGI LOOP PWM VS SLO SLI

V+

P14

LLT

P1 LATFLOWLWTEWT

CT2

4 3

CT2

4 3

CT1

2 1

CT1

2 1

Status

DISCH

P16

P17 P18 P15

(Aurora Expansion Board)

AXB™

See Figure 1 for

DHW wiring.

SW1

Modbus Add. ID

Future Use

ONOFF

Future Use

Acc 2 – Dip 4

Acc 2 – Dip 5

P8 P6

ABC Control Board Layout AXB Control Board Layout

Compressor Drive

CC2

EH1

Fac t ory

Faul t

ALG

ALM

ACC c

Status

AURORA BASE

CONTROL™

RV – K1

CC2

CC – K2

CC Hi – K3

Fan – K4

Alarm – K5

Acc – K6

ACC no

ACC nc

O/B

3A-Fuse

O/B

CCG

FP2

FP1

REV

CFM

PWM

ECM PWM

Fac t ory

Factory Fan Connection

RS 485

EH2

EH1

(+)

(-)

RS485 Exp Fac t ory

Com1

Com2

Config

SW1 Test

FP1 – 15oF/30oF

JW2 -

Alarm

P11

P2 P1

SW2

P13

P4 FP2 – 15oF/30oF

RV – B/O

ACC – Dip 4

ACC – Dip 5

CC – Dual/Single

L – Pulse/Continuous

Reheat/Normal

Factory Use

Fi eld ConnectionsFi eld Connections

FP1

Of f On

N/A

RS485 NET

LED3

LED2LED1

11111

33322

222

444

KM7

KM4 KM5 KM6 KM1

KM2

KM9

EEV/Power Supply Board Layout

INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS

Physical Data

Serial Number

If you need the Aurora System controller (LS-CPU) serial number when troubleshooting, the number is on:

• a sticker on the back of the main translator board

• a Module Status report (modstat) from WebCTRL , or thru the Aurora Touch Interface by accessing the “Module Setup”

menu.

FCC Compliance

This equipment 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 commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

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.

CAUTION: Changes or modifications not expressly approved by the responsible party for compliance could void the

user’s authority to operate the equipment.

CE Compliance

The Aurora UPC conforms to the following standards. A full Declaration of Conformity is available on request.

Electromagnetic Emissions: EN55022: 1994 Class A Electromagnetic Compatibility:

Immunity for Commercial Environments EN61000-6-1: 2007 Electrostatic Discharge: EN61000-4-2: 2008

Radiated Electromagnetic Field: EN61000-4-3: 2010 Electronic Fast Transient/

Burst Requirements: EN6100-4-4: 2004

Surge Immunity: EN6100-4-5: 2005 Immunity to Conductive Disturbance:

EN6100-4-6: 2008 Power Frequency Magnetic Field Immunity:

EN6100-4-8: 2009 Immunity to Voltage Dips and Variations

EN6100-4-11: 2004 European Low Voltage Directive

Restriction of the Use of Certain Hazardous Substances (RoHS)

BACnet Compliance

BACnet® is a registered trademark of ASHRAE. ASHRAE does not endorse, approve or test products for compliance with

ASHRAE standards. Compliance of listed products to requirements of ASHRAE Standard 135 is the responsibility of the

BACnet manufacturers Association (BMA). BTL certification is pending.

BTL® is a registered trademark of the BMA.

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