Greenheck Fan ERVe manual Typical Wiring Diagram, Transformer

Page 15

Typical Wiring Diagram

Following is an example of a typical wiring diagram located in the unit control center. This wiring diagram includes a legend highlighting which accessories were provided with the unit. Factory wiring and field wiring are also indicated. This particular example includes 1) variable frequency drives on the blowers requiring a modulating input, 2) modulating energy recovery wheel with factory controls for economizer, 3) energy recovery wheel rotation sensor, 4) outdoor air and exhaust air dirty filter switches, 5) motorized outdoor air and exhaust air intake dampers, and 6) timed exhaust frost control. Many other factory installed and wired accessories are available.

DS1

L1

MAIN POWER

 

L2

 

TO UNIT

 

L3

 

 

 

 

 

 

 

 

 

 

 

GROUND

 

 

 

 

R

S1

G

 

L1

 

 

 

 

 

 

 

 

 

VFD-E

 

 

T1

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T2

 

 

 

L3

 

S1

 

 

 

SC

FR

FC

T3

 

 

 

 

 

 

 

 

 

 

R3

 

 

 

 

EXHAUST FAN

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

MOTOR

 

L1

1

 

 

 

 

0-10 VDC

T1

 

 

 

 

 

 

 

 

 

 

 

 

VFD-S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T2

 

 

 

L3

 

S1

 

 

 

SC

FR

FC

T3

 

 

 

 

 

 

 

 

 

R4

 

 

 

 

SUPPLY FAN

 

 

 

 

 

 

 

 

 

 

 

 

MOTOR

 

 

 

1

 

 

 

 

3

0-10 VDC

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

VFD-W

 

 

T2

 

 

 

L3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T3

 

ENERGY WHEEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S1

 

 

 

 

SC

FR

FC

MA MC

 

 

 

 

R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEE BELOW FOR

 

 

 

 

3

 

 

 

4

 

 

 

 

 

TERMINAL CONNECTIONS

 

 

 

 

 

 

 

 

FU5

TR1

MULTI-VOLTAGE PRIMARY 24 SECONDARY

C

D1

EXHAUST DAMPER

VFD-E O.L.

LEGEND

CC COMPRESSOR CONTACTOR

CF CONDENSING FAN CONTACTOR

CH COMPRESSOR SUMP HEATER

*D DAMPER

DB POWER DISTRIBUTION BLOCK DL DAMPER LIMIT SWITCH

*DS DISCONNECT SWITCH

*EC ECONOMIZER CONTROLLER

FCS CONDENSOR FAN CYCLE SWITCH FU FUSES

*FU5 CONTROL TRANSFORMER FUSES (NOT ON CLASS II) FZ1 FREEZE PROTECTION

HPS HIGH PRESSURE SWITCH (MANUAL RESET) LPS LOW PRESSURE SWITCH

*PS1 WHEEL FROST PRESSURE SWITCH

*PS2 SUPPLY DIRTY FILTER PRESSURE SWITCH

*PS3 EXHAUST DIRTY FILTER PRESSURE SWITCH

*R1 ENERGY WHEEL RELAY/CONTACTOR

R2 OCCUPIED/UNOCCUPIED RELAY

*R3 EXHAUST BLOWER VFD RELAY

*R4 SUPPLY BLOWER VFD RELAY

R5 MODULATING WHEEL FROST CONTROL RELAY

R6 ECONOMIZER RELAY

R7 COMPRESSOR INTERLOCK RELAY

R8 EVAP RELAY (INDIRECT)

R9 EVAP RELAY (DIRECT)

R10 UNIT RELAY

o S1 FAN SWITCH

*S2 ROTATION SENSOR REED SWITCH

S3 ROTATION SENSOR REED SWITCH

S4 CALL FOR HEAT SWITCH

S5 BYPASS SWITCH

oS6 CALL FOR COOL SWITCH (FIRST STAGE)

S7 CALL FOR COOL SWITCH (SECOND STAGE)

*ST MOTOR STARTER

*T1 FROST CONTROL TIMER

TYPICAL SETTINGS t1(OFF) = 5 MIN., t2(ON) = 30 MIN.

* T2

ROTATION SENSOR TIMER

T3

ROTATION SENSOR TIMER

T4

ECONOMIZER WHEEL JOG TIMER

 

TYPICAL SETTINGS t1(OFF) = 3 HRS., t2(ON) = 10 SEC.

R3T1

6

 

 

 

8

 

 

 

 

 

15

16

 

 

 

 

 

 

R3

EXHAUST FAN

 

 

 

 

MB

MC

2

7

 

 

 

 

 

4

D2

SUPPLY DAMPER

 

 

 

 

VFD-S O.L.

 

 

 

 

 

 

 

 

R4

SUPPLY FAN

 

 

 

 

MB

MC

2

7

 

 

 

 

 

 

R1

ENERGY WHEEL

 

 

MA

TO MA AND MC

A2

A1

 

 

 

MC

ON VFD-W

 

 

S2

1

C

 

 

 

 

 

 

 

 

 

 

6 T2

2

 

 

 

 

ROTATION SENSOR

 

NC

 

 

 

12

 

 

T5

EVAP DELAY OFF TIMER

T6

COMPRESSOR MINIMUM OFF TIMER (TYP. 3 MIN.)

T7

COMPRESSOR MINIMUM OFF TIMER (TYP. 3 MIN.)

* TR

TRANSFORMER

* TS1 FROST CONTROL THERMOSTAT (JUMPER - HEAT)

 

CLOSES ON TEMP. DECREASE TYPICAL SETTING 5º F.

TS2 ECONOMIZER LOW LIMIT THERMOSTAT (JUMPER - HEAT) OPENS ON TEMP. DECREASE TYP. SETTING 20º OFFSET OR 50ºF.

TS3 ECONOMIZER UPPER LIMIT THERMOSTAT (JUMPER - HEAT) CLOSES ON TEMP. DECREASE TYP. SETTING 65º F./2º DIFF.

TS4 ROOM OVERRIDE SENSOR

TS5 INLET AIR POST HEATER LOCKOUT THERMOSTAT (AFTER WHEEL) CLOSES ON TEMP. DECREASE TYPICAL SETTING 65º F.

TS6 INLET AIR COMPRESSOR LOCKOUT THERMOSTAT (JUMPER-HEAT)

OPENS ON TEMP. DECREASE TYPICAL SETTING 60º F./2º DIFF.

*FACTORY SUPPLIED AND WIRED

OA-SENSOR

o FIELD WIRED

S6

Y1

620 OHM RESISTOR OR RETURN AIR SENSOR

OUTDOOR AIR

SENSOR

MIXED AIR

SENSOR

 

 

 

 

24 VAC

SENSOR

COM

THERMOSTAT CONTROLLER(S)

 

 

 

 

THERMOSTAT(S) TS1,

 

 

 

PS1

 

 

 

TS1

 

B1

 

 

 

 

 

 

 

 

 

 

 

6

T1

 

FROST CONTROL

NO C

 

 

COM

NO

A1

A2

 

TR

TR1

 

 

 

 

 

ECONOMIZER CONTROL

1

EC

 

 

 

 

 

 

+

FR

 

 

 

 

 

 

TO FR AND FC

 

 

 

SR

2-10V

 

 

 

 

 

ON VFD-W

 

 

 

-

FC

 

 

 

SR+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SO

 

 

 

 

 

 

 

SO+

5

 

 

 

 

 

 

T2

T1

FIELD CONTROL WIRING RESISTANCE SHOULD NOT EXCEED 0.75 OHM. IF RESISTANCE EXCEEDS 0.75 OHM THEN CONSULT FACTORY. USE 14 GAUGE MINIMUM WIRE THICKNESS FOR CONTROL WIRING.

REPLACEMENT FUSES: MUST HAVE A MINIMUM I.R. RATING OF 5 KA

CAUTION:

UNIT SHALL BE GROUND IN ACCORDANCE WITH N.E.C.

POWER MUST BE OFF WHILE SERVICING.

USER INTERFACE CONNECTIONS:

USER TO VERIFY THAT TR1 CAN HANDLE THE VA LOAD OF INDICATOR DEVICES.

DIRTY FILTER INDICATOR SHOWN AS 24V POWER FROM UNIT.

PS2

NC

C

NO

SUPPLY DIRTY

R

 

 

FILTER SWITCH

 

 

 

 

 

C

34

PS3

EXHAUST DIRTYNCCNO R

FILTER SWITCH

C

FROST CONTROL INDICATOR

6

C

ROTATION INDICATOR

12

C

Model ERVe Energy Recovery Unit 15

Image 15
Contents Model ERVe General Safety Information Installation, Operation and Maintenance ManualHandling Inspection and Maintenance during StorageReceiving UnpackingBasic Operation Table of ContentsSupplemental Installation Operation and Maintenance Manuals InstallationRecommended Roof Opening Roof Curb and Rail MountingLifting with a Crane Lifting with a ForkliftCurb Outside Dimensions and Weights Roof Curb MountingDuctwork Connections Service Clearances Access Panel Description and LocationRail Mounting / Layout Duct Dimensions Unit Size Dimensional DataElectrical Information Electric Heater Application/Operation Typical Control Center ComponentsDampers Unit AccessoriesOutdoor Air Weatherhood Exhaust WeatherhoodFrost Control Application/Operation Optional AccessoriesEnthalpy Sensor with Override Testing Temperature Sensor with OverrideEconomizer Application/Operation Modulating the WheelVariable Frequency Drives for Energy Recovery Blowers Factory Set PointsDrive Operation Variable Frequency Drives for Energy Recovery Wheel Economizer Signal Source10 VDC Transformer Typical Wiring DiagramCO2 Sensor Service OutletRotation Sensor Dirty Filter SensorDirty Filter Indicator power by others Remote Control Panel and Wiring SchematicsIndicator Lights powered by the ER Unit Day Timer or On/Off SwitchAmp Current Sensors analog or digital Temperature Sensors 1K Ohm RTDSensors Mounted by Factory Pressure Sensors analog or digitalGeneral Start-Up Information Pre Start-Up Checklist check as items areStart-Up Checklist Start-UpVariable Frequency Drives section Optional Accessories ChecklistOptional Accessories section Economizer Application / Operation sectionUnit Start-Up Air Seals Energy Recovery WheelVibration Drive BeltFan Motors Routine MaintenanceMaintenance Procedures Lubrication Fan BeltsFan Wheel & Fasteners External Filter MaintenanceInternal Filter Maintenance Door Seal MaintenanceEnergy Recovery Wheel Maintenance Sequence of Operation Parts ListTroubleshooting Airflow Symptom Possible Cause Corrective Action Troubleshooting UnitTroubleshooting Unit Maintenance Log Model ERVe Energy Recovery Unit Warranty

ERVe specifications

The Greenheck Fan ERVe series stands at the forefront of energy-efficient ventilation solutions, specifically designed to meet the growing demands for energy conservation and enhanced indoor air quality in commercial buildings. As part of Greenheck's commitment to innovation, the ERVe series offers a variety of models tailored to diverse applications, including schools, hospitals, and office buildings.

One of the key features of the ERVe series is its advanced energy recovery technology. The ERVe utilizes a heat recovery wheel that efficiently transfers heat and moisture between the exhaust and incoming airstreams. This process significantly reduces heating and cooling loads on HVAC systems, promoting energy savings and improving overall system efficiency. By reclaiming energy that would otherwise be wasted, the ERVe ensures that buildings not only conform to energy codes but also contribute to sustainability goals.

The ERVe series is designed with versatility in mind. It offers multiple configurations, including vertical and horizontal orientations, which makes it adaptable to various installation environments. Additionally, the unit can be equipped with a range of options such as pre-filters, post-filters, and variable speed drive motors, allowing for customization based on specific application needs. This adaptability ensures that the ERVe can meet the specific air quality requirements of different spaces while maintaining optimal airflow.

Another significant characteristic of the ERVe series is its low noise operation. The design incorporates advanced acoustical features, including sound attenuators and insulated panels, which minimize sound transmission and enhance occupant comfort. As noise control becomes increasingly important in settings like educational institutions and healthcare facilities, the ERVe series excels in providing a peaceful indoor environment.

Moreover, the ERVe series is engineered with durability in mind. Constructed from high-quality materials, the units are built to withstand the rigors of continuous operation. The robust design not only extends the service life of the equipment but also reduces maintenance requirements, leading to lower overall operational costs.

In terms of control and monitoring, the ERVe series is compatible with various building management systems, allowing for integration into sophisticated HVAC controls. This feature enables real-time data tracking and optimization, enhancing the efficiency of indoor climate management.

Overall, the Greenheck Fan ERVe series represents a significant advancement in ventilation technology, combining energy efficiency, customizable features, low noise operation, and durability. These characteristics ensure that the ERVe is a reliable choice for modern commercial buildings striving for improved air quality and reduced energy consumption.