50-52 - HV2.1.pdf

CU-01

REYQ264PBTJ

REMQ72PBTJ REMQ96PBTJ REMQ96PBTJ

3/8"x7/8"x3/4" 3/8"x7/8"x3/4"

5/8"x1 1/8"x1 1/8"

3/8"x7/8"x3/4"

BHFP26P136U 3/4"

40.4ft [6]

KHRP25M73TU

3/4"x1 3/8"x1 1/8"

22.6ft

KHRP25M72TU

1/2"x1 1/8"x3/4"

5.7ft

KHRP25M72TU

1/2"x1 1/8"x3/4"

HRB-04

BSVQ36PVJU

10.0ft [1]

3/8"x5/8"x1/2"

ACU-2-04

FXMQ18PVJU

5.4ft

1/4"x1/2" *

4.9ft

KHRP25A33T

3/8"x7/8"x3/4"

HRB-03

BSVQ36PVJU

26.1ft [1]

3/8"x5/8"x1/2"

ACU-2-03

FXZQ07MVJU9

2.9ft

1/4"x1/2" *

1.9ft

KHRP25A33T

3/8"x7/8"x3/4"

HRB-05

BSVQ36PVJU

3.9ft

3/8"x5/8"x1/2"

ACU-2-05

FXZQ07MVJU9

8.6ft [2]

1/4"x1/2" *

18.7ft

KHRP25A33T

3/8"x7/8"x3/4"

5.7ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB19

BSVQ36PVJU

7.2ft [1]

3/8"x5/8"x1/2"

ACU-2-01D

FXZQ12MVJU9

6.5ft [2]

1/4"x1/2" *

13.5ft [1]

KHRP25A22T

3/8"x5/8"x1/2"

HRB17

BSVQ36PVJU

2.5ft

3/8"x5/8"x1/2"

ACU-2-01C

FXZQ12MVJU9

4.0ft

1/4"x1/2" *

11.8ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB18

BSVQ36PVJU

3.0ft

3/8"x5/8"x1/2"

ACU-2-01B

FXZQ12MVJU9

3.7ft

1/4"x1/2" *

HRB-01

BSVQ36PVJU

14.5ft [1]

3/8"x5/8"x1/2"

ACU-2-01A

FXZQ12MVJU9

4.0ft

1/4"x1/2" *

3.4ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-07

BSVQ36PVJU

6.4ft [1]

3/8"x5/8"x1/2"

ACU-2-07

FXZQ07MVJU9

4.8ft [1]

1/4"x1/2" *

HRB-06

BSVQ36PVJU

8.7ft

3/8"x5/8"x1/2"

8.0ft [1]

KHRP26A22T

3/8"x5/8"

ACU-2-06A

FXZQ18MVJU9

7.2ft [1]

1/4"x1/2"

ACU-2-06B

FXZQ18MVJU9

7.8ft [1]

1/4"x1/2"

HRB-16

BSVQ36PVJU

6.8ft [1]

3/8"x5/8"x1/2"

ACU-2-08

FXZQ07MVJU9

8.6ft [1]

1/4"x1/2" *

0.9ft

KHRP25M72TU

1/2"x1 1/8"x3/4"

18.4ft

KHRP25A33T

3/8"x7/8"x3/4"

HRB-09

BSVQ60PVJU

7.2ft [1]

3/8"x5/8"x1/2"

ACU-3-02

FXTQ42PAVJU

12.6ft [2]

3/8"x5/8"

5.7ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-14

BSVQ36PVJU

2.6ft

3/8"x5/8"x1/2"

ACU-3-06

FXZQ07MVJU9

8.4ft [1]

1/4"x1/2" *

12.3ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-10

BSVQ36PVJU

2.5ft

3/8"x5/8"x1/2"

ACU-3-08

FXZQ07MVJU9

8.4ft [1]

1/4"x1/2" *

6.6ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-13

BSVQ36PVJU

2.5ft

3/8"x5/8"x1/2"

ACU-3-05

FXZQ07MVJU9

5.6ft [2]

1/4"x1/2" *

9.7ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-12

BSVQ36PVJU

7.8ft [1]

3/8"x5/8"x1/2"

ACU-3-04

FXZQ07MVJU9

6.6ft [1]

1/4"x1/2" *

HRB-11

BSVQ36PVJU

3.6ft

3/8"x5/8"x1/2"

ACU-3-03

FXZQ07MVJU9

4.5ft [1]

1/4"x1/2" *

9.5ft

KHRP25A22T

3/8"x5/8"x1/2"

HRB-15

BSVQ36PVJU

3.2ft

3/8"x5/8"x1/2"

ACU-3-07

FXMQ30PVJU

8.4ft [2]

3/8"x5/8"

HRB-08

BSVQ36PVJU

16.2ft [3]

3/8"x5/8"x1/2"

ACU-3-01

FXZQ07MVJU9

5.7ft [1]

1/4"x1/2" *

CU-02

RXYQ168PBTJ

RXYQ72PBTJ RXYQ96PBTJ

3/8"x3/4" 3/8"x7/8"

BHFP22P100U

100.1ft [8]

KHRP26M72TU

5/8"x1 1/8" *

3.2ft

KHRP26A33T

3/8"x7/8"

ACU-1-01

FXTQ54PAVJU

7.0ft [1]

3/8"x5/8"

ACU-1-02

FXTQ54PAVJU

7.0ft [1]

3/8"x5/8"

48.8ft [3]

KHRP26A22T

3/8"x5/8"

ACU-B-03

FXAQ18PVJU

3.6ft [2]

1/4"x1/2"

ACU-B-01

FXMQ24PVJU

15.1ft [3]

3/8"x5/8"

13. BAS Alarms

a. The BAS shall generate an alarm whenever the following conditions occur:

1. The supply fan is commanded on but fails to run (fan's current sensor indicates the fan is off for more than 60 seconds (Adjustable)).

2. The supply fan is commanded off but continues to run (fan's current sensor the fan is running for more than 60 seconds (Adjustable)).

3. The exhaust fan is commanded on but fails to run (fan's current sensor indicates the fan is off for more than 60 seconds (Adjustable)).

4. The exhaust fan is commanded off but continues to run (fan's current sensor the fan is running for more than 60 seconds (Adjustable)).

5. The energy recovery wheel is commanded on but fails to run (wheel's analog current sensor indicates wheel is off for more than 60 seconds (Adjustable).

6. The energy recovery wheel is commanded off but continues to run (wheel's analog current sensor indicates wheel is on for more than 60 seconds (Adjustable).

7. The wheel leaving supply air temperature is less than 40 degrees F (Adjustable) or greater than 90 degrees F (Adjustable) for more than 15 minutes (Adjustable).

8. The wheel leaving supply air humidity is less than 5% RH (Adjustable) or greater than 95% RH

(Adjustable) for more than 60 minutes (Adjustable).

9. The supply air temperature is less than 40 degrees F (Adjustable) or greater than 80 (Adjustable) degrees F for more than 15 minutes (Adjustable).

10. The return air temperature is less than 50 degrees F (Adjustable) or greater than 80 degrees F

(Adjustable) for more than 15 minutes (Adjustable).

11. The return air humidity is less than 10% RH (Adjustable) or greater than 70% RH (Adjustable).

12. The leaving enthalpy wheel exhaust air temperature is below 35 degrees F (Adjustable) for more than 15 minutes (Adjustable).

13. The leaving enthalpy wheel exhaust humidity is less than 5% RH (Adjustable) or greater than

95% RH (Adjustable) for more than 60 minutes (Adjustable).

14. The pressure drop across the outside air filter exceeds setpoint of 1.0" WC (adjustable).

15. The pressure drop across the exhaust air filter exceeds setpoint of 1.0" WC (adjustable).

b. The BAS shall generate a critical alarm whenever the following conditions occur:

1. The outside air temperature is less than 40 degrees F (Adjustable) and the unit's low temperature cutout (freezestat) has tripped.

SEQUENCE OF OPERATION

Energy Recovery Unit (DX, Supply & Exhaust Fan)

1. Interface

a. The BAS contractor is to interface the data points from the air handling units into the DDC system front-end.

b. The BAS contractor shall coordinate with the equipment supplier and interface all of the specified data points, including any and all incidental programming required for proper display/commanding of the data points.

c. The BAS contractor shall do a point-to-point verification of all read/write points between the air handling units and the DDC system. The point-to-point verification is to be done in conjunction with the equipment supplier.

The air handling unit supplier is to provide a trained technician to work in conjunction with the BAS system contractor for the point-to-point verification.

2. Supply Fan Control

a. The supply fan shall be balanced to supply the required amount of supply air flow during occupied hours and should be off during un-occupied hours. BAS shall vary the supply fan accordingly based on building occupancy schedule. Two-position outside air damper to open whenever supply fan starter is energized.

Damper to open whether starter “HAND-OFF-AUTO” switch in HAND or AUTO. Supply fan runs once damper operation proven open by damper limit switch. Interlock to be hardwired to prevent supply fan operation until damper proven open. Interlock active whether “HAND-OFF-AUTO” switch in HAND or AUTO. Provide a current status sensor to prove supply fan current.

1) Outside air damper open/close (DO)

2) Outside air damper proven open position (DI)

3) Supply Fan start/stop (DO)

4) Supply Fan status via current sensor (DI)

3. Exhaust Fan Control

a. The exhaust fan shall vary to maintain a building space pressure of .02" during occupied hours and shall be off during unoccupied hours . BAS to start exhaust fan based on building occupancy schedule. Two-position exhaust air damper to open whenever exhaust fan starter to be energized. Damper to open whether starter

“HAND-OFF-AUTO” switch in HAND or AUTO. Exhaust fan runs once damper operation proven open by damper limit switch. Interlock to be hardwired to prevent exhaust fan operation until damper proven open.

Interlock active whether “HAND-OFF-AUTO” switch in HAND or AUTO. Provide a current status sensor to prove exhaust fan current.

1) Exhaust air damper open/close (DO)

2) Exhaust air damper proven open position (DI)

3) Exhaust Fan start/stop (DO)

4) Exhaust Fan status via current sensor (DI)

4. Energy Recovery Wheel

a. Unit to have four modes of operation - Heating, Cooling, Dehumidification and Deadband.During occupied mode the energy wheel shall run continuously except during economizer operation when wheel is off. Wheel rotational speed shall be controlled by unit manufacturer. The enthalpy wheel speed shall modulate to maintain optimal mixed air temperature and humidity.

a. Heating mode enabled if outside air temperature below Heating Mode Outside Air enable setpoint (65°F adj)

1.) Energy recovery wheel operation is enabled for heating recovery.

2.) Wheel leaving outside air temperature control loop varies wheel speed to maintain wheel leaving outside air temperature at setpoint (70°F, adj.). Control loop increases wheel speed if leaving air temperature falls below setpoint, decreases wheel speed if temperature goes above setpoint.

3.) Heating shall be enabled if wheel leaving outside air temperature control loop has wheel speed commanded to maximum but wheel leaving outside air temperature is below control loop setpoint

(70°F, adj.) for more than thirty minutes.

4.) Heating shall be controlled to maintain supply temperature setpoint. Heating mode shall commence if condensate sensor is not in alarm. On a call for heating, the mechanical cooling shall stage off. On a further call for heating the gas heat valve shall be modulated to maintain a maximum supply temperature of 72 degrees. Once space temperature setpoint is achieved, modulate the gas heat off.

1) Supply air temperature (AI)

2) Hot gas reheat valve position % open (AO)

b. Cooling mode enabled if outside air temperature above Cooling Mode Outside Air Drybulb enable setpoint

(75°F adj)

1.) Energy recovery wheel operation is enabled for cooling recovery

2.) Wheel leaving outside air temperature control loop varies wheel speed to maintain wheel leaving outside air temperature at setpoint (70°F, adj.). Control loop increases wheel speed if leaving air temperature rises above setpoint, decreases wheel speed if temperature falls below setpoint.

3.) Cooling shall be enabled if wheel leaving outside air temperature control loop has wheel speed commanded to maximum but wheel leaving outside air temperature is above control loop setpoint

(70°F, adj.) for more than thirty minutes.

4.) Cooling shall be controlled to maintain supply temperature setpoint. Cooling mode shall commence if condensate sensor is not in alarm. On a call for cooling, the reversing valve(s) shall move to the cooling position and compressor(s) shall be staged on. When supply temperature is satisfied, the compressor(s) shall stage off.

c. Dehumidification control is enabled if the wheel leaving outside air dewpoint temperature is above 55°F for more than thirty minutes.

1.) Cooling operation is enabled.

2.) Cooling stages on to maintain leaving air temperature at setpoint (55°F, adj.).

3.) Hot gas reheat valve modulates as necessary to maintain the supply air setpoint (70 °F, adj.).

4.) Dehumidification control disabled when wheel leaving outside air dewpoint temperature is 3°F below setpoint (55°F, adj.) for more than thirty minutes.

d. Deadband operation occurs when unit running and Heating, Cooling and Dehumidification modes are off.

1.) Energy recovery wheel is off and dual temperature coil control valve is closed.

2.) No heating or cooling occurs when unit is in deadband (outside air drybulb temperature between

65°F and 75°F, and outside air dewpoint below 55°F).

A. Enthalpy Wheel VFD current (AO/AI)

B. Outside air temperature (AI)

C. Outside air humidity (AI)

D. Leaving enthalpy wheel supply air temperature (AI)

E. Leaving enthalpy wheel supply air humidity (AI)

F. Entering enthalpy wheel exhaust temperature (AI)

G. Entering enthalpy wheel exhaust humidity (AI)

H. Leaving enthalpy wheel exhaust air temperature (AI)

I. Leaving enthalpy wheel exhaust air humidity (AI)

J. Supply air humidity (AI)

K. Supply air temperature (AI)\

L. Chilled water valve position (% open) (AO)

M. Hot water valve position (% open) (AO)

5. Condensate Overflow

a. Provide a high condensate sensor in the condensate pan. Upon detection of high condensate in the condensate pan, shut down water source heat pump and alarm the BAS.

1) High condensate sensor (DI)

6. Filter Pressure Drop

a. Provide static pressure differential sensor across each filter.

7) Exhaust air filter pressure differential sensor (AI)

8) Outside air filter pressure differential sensor (AI)

7. Low Limit Control

a. Provide a low limit whenever the supply air temperature drops below 40 deg. F dry bulb that will alarm the system and shut down the ERV.

8. High Limit Control

a. Provide a high limit whenever the supply air temperature exceeds 90 deg. F dry bulb that will alarm the system and shut down the ERV.

9. Smoke Detector

a. When the smoke detector is alarmed, the fire alarm system shall be alarmed and the water source heat pump shall fail safe with manual reset. Electrical contractor shall furnish, HVAC Contractor shall mount & Electrical contractor shall wire a UL listed photoelectric smoke detector per local code authority having jurisdiction.

10. Unoccupied

a. In unoccupied mode, the supply fan shall ramp down to 7000 cfm, the exhaust fans shall be off, the energy wheel shall be off, the outside air damper is open, and exhaust dampers are closed. The supply air setpoint shall be 60 deg F (adj.) in the winter and 80 deg F (adj) in the summer.

11. Enthalpy Wheel Frost Control

a. To prevent frost or ice accumulation on the enthalpy wheel, a defrost control loop modulates the enthalpy wheel outside air bypass damper towards its open position when the wheel leaving exhaust air drybulb temperature drops to within 2°F of the wheel leaving exhaust air wetbulb temperature.

12. Enthalpy Wheel Cleaning Cyle

a. Enthalpy wheel shall run for five minutes out of every sixty minutes when unit's supply fan is running and wheel is not running for other modes of operation.

DATE

DATE

ENGINEERING

DIVISION OF

AGENCY

AUTHORIZED AGENT

DIV. OF ENGR.

REVIEWED

ENGR. ACCT NO.

DRAWING NO.

DATE

A&E FILE NO.

CHECKED BY

SHEET DRAWN BY

RECORD DATE

DATEREVISIONS

COMMONWEALTH OF KENTUCKY

FINANCE AND ADMINISTRATION CABINET

DEPARTMENT FOR FACILITIES & SUPPORT SERVICES

DIVISION OF ENGINEERING

FRANKFORT, KENTUCKY

WWW.KLHENGRS.COM

ENGINEERS, PSC

MECHANICAL/ELECTRICAL ENGINEERS

KOHRS LONNEMANN HEIL

LEXINGTON, KENTUCKY

COLUMBUS, OHIO

DAYTON, OHIO

NEW YORK, NEW YORK

1538 ALEXANDRIA PIKE, SUITE

11 FT. THOMAS, KENTUCKY

41075 800-354-9783

859-442-8050

859-442-8058 FAX

KLH PRO. NO.

11369.04

470-C5N5-NC11-01

GATEWAY URBAN CAMPUS

438-440 Scott St., Covington, KY 41011

12/18/15

201114.02

PROFESSIONAL SERVICES CLASSROOM CENTER

HV2.1

H.V.A.C. PIPING DIAGRAM