12-965-010544 760A 544 811A
TTE -1 °
55/95 DEG F 0 /10
DRRMT DRRMH PCT RH
0 0
DETAIL MR DETAIL MF
SENSORS LOCATED IN DATA ROOM
DATA ROOM
EXHAUST FANS
The space served by the duct exhaust fan is controlled in
Occupied and Unoccupied modes as follows:
Occupied
The DDC system turns on the exhaust fan when the
respective AHU is running.
Unoccupied
The exhaust fan is off when the respective AHU has shut down.
The DDC system uses a differential pressure switch or current sensor to monitor
the exhaust fan status and shall provide and alarm if the
fan fails during the occupied mode.
Interlock all associated Fire /Smoke dampers with the exhaust
fan. Dampers shall open when fan is running and close when
fan is shut down manually, through the interlock or if the
fan fails.
TO CLOSEST PANEL
24 VAC
CONDENSATE OVERFLOW
SWITCH
SWITCH PROVIDED BY
I
OTHERS
DATA ROOM POINTS
ONE CONDESATE SWITCH PER
LIEBERT UNIT
(PCU -1)
TO UNIT SAFETY
CIRCUIT
TO CLOSEST PANEL
DROVRF
0
DETAIL MC
A temperature and humidity sensor will monitor room temp and humidity. If the
humidity rises above a setpoint (60%), or drops below a setpoint (30%) (H1 /Low), an
alarm will be generated.
The condensate overflow switch will be monitored for each Liebert. The
point will alarm if the overflow switch changes state signifying an overflow issue.
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INSTALLATION NOTES:
O1 RELAY LOCATED AT FAN STARTER.
2O TRANSFORMER LOCATED AT CONTROLLER.
O3 INTERLOCK EXHAUST FAN WITH RESPECTIVE AHU
STARTER
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REHEAT COIL CONTROL
SEQUENCE OF OPERATIONS
REHEAT COILS: The space thermostat shall modulate the pump speed to maintain its setting
Direct Acting (call for heat increases pump speed.)
Pump to be set to "Equal Percentage" flow characteristic.
Thermmostat to be 0 -10 vdc by Siemens. Wiring to pump from thermostat
to be by Siemens.
NOTE:
EXISTING REHEAT COIL CONTROL DIAGRAM FOR REFERENCE ONLY.
RELOCATE THERMOSTAT AS SHOWN PLANS.
SRSmith
Seckman
Reid, Inc.
600 West Hillsboro, Suite 300
Deerfield Beach, FL 33441
(954) 421 -1260
FAX: (954) 421 -1466
www.ssr- inc.com
Firm Certification - EB- 0000857
Michael A. Steward PE - 65701
John E. Moulder PE - 33200
SSR JOB # 1232016.0
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REHEAT COIL CONTROL
SEQUENCE OF OPERATIONS
REHEAT COILS: The space thermostat shall modulate the pump speed to maintain its setting
Direct Acting (call for heat increases pump speed.)
Pump to be set to "Equal Percentage" flow characteristic.
Thermmostat to be 0 -10 vdc by Siemens. Wiring to pump from thermostat
to be by Siemens.
NOTE:
EXISTING REHEAT COIL CONTROL DIAGRAM FOR REFERENCE ONLY.
RELOCATE THERMOSTAT AS SHOWN PLANS.
SRSmith
Seckman
Reid, Inc.
600 West Hillsboro, Suite 300
Deerfield Beach, FL 33441
(954) 421 -1260
FAX: (954) 421 -1466
www.ssr- inc.com
Firm Certification - EB- 0000857
Michael A. Steward PE - 65701
John E. Moulder PE - 33200
SSR JOB # 1232016.0
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REHEAT COIL CONTROL
SEQUENCE OF OPERATIONS
REHEAT COILS: The space thermostat shall modulate the pump speed to maintain its setting
Direct Acting (call for heat increases pump speed.)
Pump to be set to "Equal Percentage" flow characteristic.
Thermmostat to be 0 -10 vdc by Siemens. Wiring to pump from thermostat
to be by Siemens.
NOTE:
EXISTING REHEAT COIL CONTROL DIAGRAM FOR REFERENCE ONLY.
RELOCATE THERMOSTAT AS SHOWN PLANS.
SRSmith
Seckman
Reid, Inc.
600 West Hillsboro, Suite 300
Deerfield Beach, FL 33441
(954) 421 -1260
FAX: (954) 421 -1466
www.ssr- inc.com
Firm Certification - EB- 0000857
Michael A. Steward PE - 65701
John E. Moulder PE - 33200
SSR JOB # 1232016.0
Comm. No: 12007.00
Date:
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Comm. No: 12007.00
Date:
05/22/12
Drawn:
Revised:
QADDENDUM
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06/21/12
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05/08/13
THE
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