Drawings.pdf

1405 DUBLIN ROAD

COLUMBUS, OHIO 43215

TEL: (614) 486-4778

FAX: (614) 486-4082

Electrical - Mechanical - Plumbing - Fire Protection

1 TEMPORARY HVAC SERVICE PLAN - MECHANICAL

1 ENLARGED MECHANICAL ROOM PLAN - PLUMBING - DEMOLITION

1 ENLARGED MECHANICAL ROOM PLAN - PLUMBING

PLUMBING FIXTURE SCHEDULE

PLUMBING FIXTURE ROUGH-IN SCHEDULE DOMESTIC WATER HEATER SCHEDULE

TAG

ELECTRIC RECOVERY AT

32°F MANUFACTURER MODEL # NOTES

VOLT PHASE KW

EWH1 480 3 96 20 GPM EEMAX ED096480T 12 EFD SET TANK TEMPERATURE TO 140°F

THERMOSTATIC MIXING VALVE SCHEDULE

SUMP PUMP SCHEDULE

2 DETAIL - INTERIOR EMERGENCY EYEWASH AND DRENCH SHOWER1 DETAIL - SIMPLEX SUMP PUMP

3 DETAIL - DCW/BLENDED CW PIPING SEPARATION 4 DETAIL - DCW/BLENDED CW PIPING SEPARATION

1 OVERALL FLOOR PLAN - MECHANICAL

1 PARTIAL FLOOR PLAN - MECHANICAL

1 ENLARGED MECHANICAL ROOM PLAN - MECHANICAL - DEMOLITION

1 ENLARGED MECHANICAL ROOM PLAN - MECHANICAL

1 CHILLER PIPING DETAIL

2 END SUCTION PUMP DETAIL

11 EXISTING COIL DETAIL (2 WAY VALVE)

5 AH8 COIL DETAIL (3 WAY VALVE)

7 INDOOR CONCRETE PAD DETAIL

3 CHILLED/HEATING WATER MAKEUP ASSEMBLY DETAIL

6 PIPING HANGER DETAIL

4 PIPING HANGER DETAIL

8 CONDENSER END SUCTION PUMP DETAIL

9 PIPE ROOF PENETRATION DETAIL 10 DETAIL - MECHANICAL ROOM ABANDONED PIPE

OUT

IN

OUT

IN

WATER COOLED COOLING CHILLER SCHEDULE

PUMP SCHEDULE

EXPANSION TANK SCHEDULE

WATER BALANCE SCHEDULE

SEQUENCE OF OPERATION

A. CHILLED WATER SYSTEM

1. THE PIPING SYSTEM IS A TWO PIPE HEATING AND COOLING TYPE WITH SEASONAL SWITCHOVER. THE CHILLED WATER SYSTEM IS PIPED IN A PRIMARY/SECONDARY PUMPING ARRANGEMENT AND CONSISTS OF TWO WATER COOLED CHILLERS (CH1 & CH2), THREE PRIMARY CHILLED WATER CIRCULATING PUMPS (P2A, P2B, & P2C), TWO SECONDARY WATER CIRCULATING PUMPS (P1A & P1B), ONE COOLING TOWER (CT1), AND TWO CONDENSER PUMPS (P3A & P3B). ALL AIR HANDLING EQUIPMENT SHALL UTILIZE TWO-WAY CONTROL VALVES EXCEPT FOR AH8 WHICH USES A THREE-WAY CONTROL VALVE TO MAINTAIN CIRCULATION

THROUGH THE PIPING SYSTEM.

2. THE CHILLED WATER SYSTEM SHALL BE ENABLED TO RUN WHEN THE CONTROLS OVERRIDE SWITCH IS IN THE "LOCAL CLG” OR "AUTO" POSITION AND WHEN THE CHILLED WATER SYSTEM IS WITHIN THE OWNER PREDEFINED COOLING SEASON AND THE SECONDARY LOOP DUAL TEMP WATER TEMPERATURE IS LESS THAN 85 DEG. F(ADJ). WHEN THE CHILLED WATER SYSTEM IS ENABLED, THE HEATING SYSTEM'S THREE WAY VALVE SHALL BE CLOSED TO ONLY ALLOW FLOW THROUGH THE BYPASS. THE DDC SYSTEM STARTS THE LEAD CHILLED WATER SYSTEM WHENEVER THE OUTSIDE AIR TEMPERATURE IS ABOVE 60°F AND THE TIME OF DAY IS BETWEEN THE CHILLED WATER SYSTEM'S PROGRAMMED START AND STOP TIMES.

3. THE PRIMARY PUMP/CHILLER PAIR SHALL BE USER SELECTABLE THROUGH THE BAS INCLUDING THE PRIMARY PUMP THAT IS

ASSOCIATED WITH EACH CHILLER.

4. WHEN THE CHILLED WATER SYSTEM IS ENABLED, THE LEAD CHILLER'S N.C. MOTORIZED CHILLED AND CONDENSER WATER INLET VALVES SHALL OPEN. THE LEAD PRIMARY CHILLED WATER PUMP AND LEAD CONDENSER WATER PUMP SHALL START AND AFTER PROOF OF FLOW THROUGH THE EVAPORATOR AND CONDENSER, THE LEAD WATER COOLED CHILLER SHALL BE ENABLED.

THE WATER COOLED CHILLER SHALL OPERATE UNDER ITS PACKAGED CONTROLS TO MAINTAIN THE CHILLED WATER TEMPERATURE SETPOINT OF 44 DEGREE F (ADJUSTABLE THROUGH THE BAS). THE PACKAGED CONTROLS SHALL INCLUDE A

MINIMUM RUN TIME AND AN ANTI-SHORT CYCLE TIMER.

5. THE BAS CENTRAL MONITORING STATION SHALL MONITOR THE CHILLER'S ENTERING AND LEAVING CHILLED WATER, AND CONDENSER WATER TEMPERATURES THROUGH TEMPERATURE SENSORS IN THE PIPING. THE BAS CENTRAL MONITORING STATION SHALL ALSO MONITOR THE SECONDARY SUPPLY AND RETURN TEMPERATURES THROUGH TEMPERATURE SENSORS IN

THE PIPING.

6. IF THE AVERAGE CHILLER AMPERAGE OF THE LEAD CHILLER IS GREATER THAN 95% OF THE MAXIMUM FOR MORE THAN 30 MINUTES, OR IF THE CHILLED WATER RETURN TEMPERATURE OF THE LEAD CHILLER SYSTEM IS GREATER THAN 58 DEGREES F (ADJUSTABLE) FOR MORE THAN 30 MINUTES, THE NEXT CHILLER'S START SEQUENCE SHALL BEGIN, SIMILAR TO THE LEAD CHILLER ABOVE. PROVIDE CURRENT SENSORS FOR THE CHILLERS FOR RLA INDICATION TO THE BAS.

7. IF THE CHILLED WATER SUPPLY TEMPERATURE RISES ABOVE 48 DEGREES (ADJUSTABLE) WHEN BOTH CHILLERS ARE ENERGIZED, THE BAS SHALL BE ALARMED.

8. WHEN THE AVERAGE CHILLER AMPERAGE IS SUCH THAT ONE CHILLER COULD BE DISABLED AND THE REMAINING CHILLER WOULD HAVE AVERAGE CHILLER AMPERAGE OF LESS THAN 80% FOR MORE THAN 15 MINUTES OR THE CHILLED WATER RETURN TEMPERATURE IS SUCH THAT ONE CHILLER COULD BE DISABLED AND THE REMAINING CHILLER WOULD HAVE A RETURN WATER TEMPERATURE OF LESS THAN 58 DEGREES F (ADJUSTABLE) FOR MORE THAN 15 MINUTES, THE LAG CHILLER STOP SEQUENCE SHALL BEGIN AS FOLLOWS: THE LAG CHILLER SHALL BE DISABLED. THE CHILLER'S CHILLED WATER PRIMARY PUMP AND CONDENSER PUMP SHALL CONTINUE TO RUN FOR FIVE MINUTES (ADJUSTABLE) AND THEN SHUT OFF. THE CHILLER'S

MOTORIZED CHILLED AND CONDENSER WATER INLET VALVES SHALL THEN CLOSE.

9. ALTERNATE THE LEAD, LAG, AND BACKUP CHILLED WATER PUMPS P2A, P2B AND P2C ON THE THIRD TUESDAY OF EACH MONTH AT 0800 HOURS (ADJUSTABLE). IF THE LEAD CHILLED WATER PUMP FAILS TO OPERATE, THEN THE BACKUP PUMP SHALL BE STARTED AND AN ALARM SHALL BE INITIATED AT THE DDC CONTROLLER AND THE BAS CENTRAL MONITORING STATION.

AUTOMATICALLY START THE BACKUP PUMP, BASED UPON PRIMARY PUMP FAILURE AS SENSED BY A CURRENT OPERATED SWITCH PROVIDED FOR EACH PUMP. MAKE SURE THAT THERE ARE NO ALARMS ASSOCIATED WITH THE LAG SYSTEM BEFORE

STOPPING THE LEAD CHILLER SYSTEM.

10. ALTERNATE THE LEAD, AND THE LAG, CHILLERS (CH1 & CH2) ON THE THIRD TUESDAY OF EACH MONTH AT 0800 HOURS (ADJUSTABLE). IF THE LEAD CHILLER GOES INTO ALARM AS INDICATED BY THE CHILLER'S PACKAGED CONTROLS, THEN THE LAG CHILLER SHALL BE STARTED AND AN ALARM SHALL BE INITIATED AT THE DDC CONTROLLER AND THE BAS CENTRAL MONITORING

STATION.

11.WHEN THE CONTROLS OVERRIDE SWITCH IS IN THE “OFF” POSITION THEN THE CHILLED WATER SYSTEM SHALL BE DISABLED.

B. COOLING TOWER CONTROL

1. THE BAS SHALL PERMIT THE COOLING TOWER FAN TO OPERATE BASED ON CONDENSER WATER PUMP STATUS DETERMINED THROUGH CURRENT SENSING RELAYS. A TEMPERATURE SENSOR SHALL BE PROVIDED IN THE COMMON CONDENSER WATER SUPPLY HEADER. THE BAS SHALL MODULATE THE THREE WAY COOLING TOWER BYPASS VALVE AND STAGE/CYCLE THE COOLING TOWER FAN TO MAINTAIN 60 DEGREES F (ADJUSTABLE) CONDENSER WATER TEMPERATURE TO THE CHILLERS.

2. THE CONDENSER WATER SUPPLY TEMPERATURE SHALL BE LIMITED TO A MINIMUM OF 60 DEGREES F AND A MAXIMUM OF 85 DEGREES F (ADJUSTABLE, BASED ON CHILLER MANUFACTURER'S RECOMMENDATIONS). A MAXIMUM CONDENSER WATER SUPPLY TEMPERATURE CONTROL LOOP OPERATES THE COOLING TOWER'S VARIABLE SPEED FAN TO MAINTAIN A MAXIMUM

CONDENSER WATER SUPPLY TEMPERATURE OF 85°F.

3. TIME DELAYS SHALL BE PROVIDED TO PREVENT SHORT CYCLING. THE TOWER FAN SHALL NOT BE PERMITTED TO OPERATE ON A TOWER WATER NO FLOW CONDITION. COORDINATE MAXIMUM STARTS PER HOUR REQUIREMENT WITH THE TOWER

MANUFACTURER.

4. A FAN VIBRATION SWITCH SHALL BE WIRED TO SHUTDOWN THE TOWER FAN AND ALARM THE BAS IF A HIGH VIBRATION

CONDITION IS DETECTED.

5. THE ELECTRONIC WATER LEVEL CONTROLLER SHALL BE WIRED TO THE DDC SYSTEM TO OPEN AND CLOSE THE 2-POSITION VALVE IN THE TOWER MAKE-UP WATER LINE TO MAINTAIN PROPER WATER LEVEL IN THE TOWER SUMP.

6. ALARM THE BAS IF THE COMMON CONDENSER WATER SUPPLY TEMPERATURE DROPS BELOW 40 DEGREES F (ADJUSTABLE).

C. HEATING WATER SYSTEM

1. THE SECONDARY PIPING SYSTEM IS A TWO PIPE HEATING AND COOLING TYPE WITH SEASONAL SWITCHOVER. THE HEATING WATER SYSTEM SHALL BE ENABLED TO RUN WHEN THE CONTROLS OVERRIDE SWITCH SWITCH IS IN THE "LOCAL HTG" OR "AUTO" POSITION AND WHEN THE HEATING WATER SYSTEM IS WITHIN THE OWNER PREDEFINED HEATING SEASON.

2. THE SYSTEM IS PIPED IN A PRIMARY/SECONDARY PUMPING ARRANGEMENT AND CONSISTS OF TWO CONDENSING BOILERS B1 & B2, TWO PRIMARY (BOILER) HOT WATER PUMPS BP-1 & BP-2, AND TWO SECONDARY PUMPS (P1A & P1B), AND ACCESSORIES.

3. THE LEAD/STANDBY PRIMARY PUMP/BOILER SHALL BE USER SELECTABLE THROUGH THE BUILDING DDC SYSTEM.

4. A "HAND-OFF-AUTO" SWITCH AT EACH HOT WATER PUMP STARTER PERMITS MANUAL OR AUTOMATIC OPERATION OF THE PUMP. IN THE "AUTO" POSITION THE PUMP IS STARTED AND STOPPED BY THE DDC SYSTEM. IN THE "HAND" POSITION THE

PUMP RUNS CONTINUOUSLY REGARDLESS OF THE COMMAND FROM THE DDC SYSTEM.

5. THE BUILDING DDC SYSTEM SHALL ENABLE A BOILER AND ITS ASSOCIATED PRIMARY BOILER PUMP WHEN THE OUTSIDE AIR TEMPERATURE IS BELOW 60 DEG F. (ADJ) FOR A PERIOD OF THREE HOURS (ADJ) AND WHEN SECONDARY FLOW IS PROVEN. THE PRIMARY PUMP SHALL START, AND WHEN PRIMARY FLOW IS PROVEN, THE BOILER INTERNAL FACTORY CONTROLS SHALL BE ENABLED AND SHALL MODULATE THE BOILER BURNER TO MAINTAIN THE PRIMARY (SYSTEM) HOT WATER SUPPLY TEMPERATURE AT SETPOINT (160 DEG F.) . THE SECONDARY HOT WATER SUPPLY TEMPERATURE SETPOINT SHALL BE RESET

BASED ON THE OUTDOOR AIR TEMPERATURE FROM THE BUILDING DDC SYSTEM.

6. IF PRIMARY FLOW IS NOT PROVEN OR THE LEAD BOILER FAILS, THE BUILDING DDC SYSTEM SHALL GENERATE AN ALARM, IF THE BOILER FALLS, THE BOILER SHALL BE DISABLED. THE PRIMARY PUMP SHALL CONTINUE TO RUN FOR FIVE MINUTES (ADJ) AND THEN SHUT OFF. THE BUILDING DDC SYSTEM SHALL THEN ENABLE THE LAG BOILER AND ITS PRIMARY HOT WATER PUMP IN A

SIMILAR MANNER.

7. IF THE SECONDARY HOT WATER SUPPLY TEMPERATURE SETPOINT CANNOT BE MAINTAINED WITH ONE BOILER, THE LAG BOILER AND ITS ASSOCIATED PRIMARY HOT WATER PUMP SHALL BE ENABLED, IF THE SECONDARY HOT WATER SUPPLY TEMPERATURE DROPS BELOW 120 DEG F. (ADJ) WHEN BOTH BOILERS ARE ENERGIZED, THE BUILDING DDC SYSTEM SHALL GENERATE AN ALARM. IF BOTH BOILERS ARE FIRING AT LESS THAN 50% (ADJ) FOR MORE THAN ONE HOUR (ADJ), THE LAG BOILER SHALL SHUT

DOWN.

8. WHENEVER THE OUTSIDE AIR TEMPERATURE GOES ABOVE 58 DEG F. (ADJ) FOR A PERIOD OF ONE HOUR (ADJ), THEN THE

HEATING WATER SYSTEM SHALL BE DISABLED.

9. WHEN A BOILER HAS BEEN COMMANDED OFF, THE BOILER PRIMARY PUMP SHALL CONTINUE TO RUN FOR 5 MINUTES (ADJ)

AND SHUT OFF.

10. THE BUILDING DDC SYSTEM SHALL MONITOR THE SECONDARY HOT WATER SUPPLY AND RETURN TEMPERATURES, AND EACH

BOILERS LEAVING WATER TEMPERATURE.

11. THE BUILDING DDC SYSTEM SHALL MONITOR THE STATUS AND ALARM CONDITION OF EACH BOILER.

12. ALTERNATE THE LEAD BOILER/PRIMARY PUMP EVERY 168 HOURS (ADJ).

13. A RISE IN MECHANICAL ROOM CARBON MONOXIDE (CO) CONCENTRATION ABOVE SETPOINT (ADJ) SHALL GENERATE AN ALARM.

14. THE GAS METER SHALL BE CONNECTED TO THE POWERLOGIC SYSTEM THROUGH THE EXISTING POWER METER.

D. SECONDARY PUMPING SYSTEM (P1A & P1B)

1. THE BAS SHALL ENABLE THE VARIABLE SPEED SECONDARY PUMPING SYSTEM TO OPERATE WHEN THE CONTROLS OVERRIDE

SWITCH IS IN THE “LOCAL CLG” OR “LOCAL HTG” OR "AUTO" POSITION.

2. THE LEAD AND LAG SECONDARY PUMP SHALL BE USER SELECTABLE THROUGH THE BAS.

3. THE LEAD VARIABLE SPEED SECONDARY CIRCULATING PUMP WILL INCREASE AND DECREASE SPEED IN RESPONSE TO A DIFFERENTIAL PRESSURE SENSOR IN THE WATER SUPPLY AND RETURN PIPING. THE DIFFERENTIAL PRESSURE SENSOR SHALL BE INSTALLED AT THE MOST REMOTE POINT OF THE PIPING SYSTEM, NEAR AH8. THE DIFFERENTIAL PRESSURE SETPOINT IS TO BE DETERMINED BY THE CONTROL CONTRACTOR WITH THE ASSISTANCE OF THE BALANCE CONTRACTOR AFTER FINAL BALANCING

HAS BEEN COMPLETED.

4. ALTERNATE THE LEAD/LAG SECONDARY PUMP ON THE THIRD TUESDAY OF EACH MONTH AT 0800 HOURS (ADJUSTABLE). IF THE LEAD SECONDARY PUMP FAILS TO OPERATE, THEN THE LAG PUMP SHALL BE STARTED AND AN ALARM SHALL BE INITIATED AT THE DDC CONTROLLER AND THE BAS CENTRAL MONITORING STATION. AUTOMATICALLY START THE LAG PUMP, BASED UPON SECONDARY PUMP FAILURE AS SENSED BY THE DIFFERENTIAL PRESSURE SENSOR IN THE WATER SUPPLY AND RETURN PIPING.

WHEN ALTERNATING LEAD/LAG PUMPS, THE CURRENT LEAD PUMP SHALL REMAIN RUNNING UNTIL FLOW IS PROVEN FOR THE

NEW LEAD PUMP, THEN RAMP DOWN AND ASSUME THE LAG PUMP ROLE.

E. COOLING TO HEATING SWITCHOVER

1. CLOSE THE COOLING SYSTEM'S THREE WAY VALVE TO ONLY ALLOW FLOW THROUGH THE BYPASS.

2. MAINTAIN THE HEATING SYSTEM'S THREE WAY VALVE CLOSED POSITION TO ONLY ALLOW FLOW THROUGH THE BYPASS.

3. ENABLE THE HEATING SYSTEM. FOLLOW THE HEATING WATER SYSTEM SEQUENCE ABOVE. ONCE THE HEATING SYSTEM IS OPERATING, SLOWLY OPEN THE HEATING SYSTEM'S THREE WAY VALVE TO BLEED WATER INTO THE PRIMARY LOOP FROM THE SECONDARY LOOP. SLOWLY OPEN THE VALVE TO MAINTAIN A BOILER INLET TEMPERATURE OF 110 DEGREES F (ADJUSTABLE).

4. ONCE THE SYSTEM HAS FULLY ADJUSTED TO HEATING, THE HEATING SYSTEM'S THREE WAY VALVE WILL BE FULLY OPEN.

F. HEATING TO COOLING SWITCHOVER

1. CLOSE THE HEATING SYSTEM'S THREE WAY VALVE TO ONLY ALLOW FLOW THROUGH THE BYPASS.

2. MAINTAIN THE COOLING SYSTEM'S THREE WAY VALVE CLOSED POSITION TO ONLY ALLOW FLOW THROUGH THE BYPASS.

3. ENABLE THE COOLING SYSTEM. FOLLOW THE CHILLED WATER SYSTEM SEQUENCE ABOVE. ONCE THE CHILLED WATER SYSTEM IS OPERATING, SLOWLY OPEN THE CHILLED WATER SYSTEM'S THREE WAY VALVE TO BLEED WATER INTO THE PRIMARY LOOP FROM THE SECONDARY LOOP. SLOWLY OPEN THE VALVE TO MAINTAIN A CHILLER INLET TEMPERATURE OF 56 DEGREES F

(ADJUSTABLE).

4. ONCE THE SYSTEM HAS FULLY ADJUSTED TO COOLING, THE COOLING SYSTEM'S THREE WAY VALVE WILL BE FULLY OPEN.

G. CONTROLS OVERRIDE SELECTOR SWITCHES/ALARMS

1. PROVIDE SELECTOR SWITCH SS1 LABELED “CLG/HTG ENABLE”: FOUR POSITION TAGGED “LOCAL CLG”, "LOCAL HTG", “AUTO"

AND "OFF".

LOCAL CLG: WILL ALLOW THE CHILLER(S) TO OPERATE UNDER ITS INTEGRAL CONTROL PACKAGE INDEPENDENT OF THE DDC SYSTEM. THE COOLING SYSTEM'S THREE WAY VALVE SHALL BE CLOSED TO ONLY ALLOW FLOW THROUGH THE BYPASS IF THE SECONDARY SUPPLY AND RETURN TEMPERATURES ARE ABOVE 80 DEGREE F (ADJUSTABLE). THE HEATING SYSTEM'S

THREE WAY VALVE SHALL BE CLOSED TO ONLY ALLOW FLOW THROUGH THE BYPASS.

LOCAL HTG: WILL ALLOW THE BOILER(S) TO OPERATE UNDER ITS INTEGRAL CONTROL PACKAGE INDEPENDENT OF THE DDC SYSTEM. THE HEATING SYSTEM'S THREE WAY VALVE SHALL BE CLOSED TO ONLY ALLOW FLOW THROUGH THE BYPASS IF THE SECONDARY SUPPLY AND RETURN TEMPERATURES ARE BELOW 60 DEGREES F (ADJUSTABLE). THE COOLING SYSTEM'S

THREE WAY VALVE SHALL BE CLOSED TO ONLY ALLOW FLOW THROUGH THE BYPASS.

AUTO: WILL PLACE THE SYSTEM UNDER THE DDC AUTOMATION CONTROL.

OFF: WILL DISABLE THE CHILLED WATER OR HEATING WATER SYSTEMS.

2. PROVIDE ALARM RESET PUSHBUTTON LABELED “ALARM RESET”: PUSHBUTTON WITH LED.

LED WILL ILLUMINATE WHENEVER A HW/CW PLANT SYSTEM ALARM OCCURS THAT REQUIRES A MANUAL RESET WITHIN

THE DDC SYSTEM.

ALL SOFTWARE ALARMS WILL RESET TO NORMAL WHENVER THE SWITCH IS ACTIVATED OR THE SOFTWARE RESET

COMMAND IS TOGGLED IN THE DDC SYSTEM FOR THE HW/CW SYSTEMS.

3. PROVIDE A SWITCH FOR EACH WATER PUMP: THREE POSITION TAGGED “HAND”, "OFF" AND “AUTO.”

HAND: WILL OPERATE THE PUMP INDEPENDENT OF THE DDC SYSTEM.

OFF: WILL DISABLE THE PUMP.

AUTO: WILL PLACE THE PUMP UNDER THE DDC AUTOMATION CONTROL.

H. GAS METER

1. PROVIDE CONNECTION TO NEW GAS METER FOR MONITORING THROUGH BAS.

I. WATER METERS

1. PROVIDE CONNECTION TO NEW WATER METERS FOR MONITORING THROUGH BAS.

J. CONDENSER WATER TREATMENT

1. PROVIDE CONNECTION TO CONDENSER WATER TREATMENT FOR MONITORING TDS, PH, AND GENERAL ALARM THROUGH BAS.

K. EXHAUST FAN, (E)EF-3 (SHOWN FOR REFERENCE ONLY)

1. ON A RISE IN SPACE TEMPERATURE ABOVE THE THERMOSTAT SETPOINT, THE OUTSIDE AIR DAMPER FOR THE LOUVER SHALL OPEN. AFTER THE DAMPER IS FULLY OPEN, DETERMINED BY A DAMPER END SWITCH, THE EXHAUST FAN SHALL START.

2. ONCE THE SPACE TEMPERATURE DROPS BELOW THE THERMOSTAT SETPOINT, THE FAN SHALL STOP. AFTER THE FAN IS

STOPPED THE OUTSIDE AIR DAMPER SHALL CLOSE.

3. WHEN THE REFRIGERANT LEVEL IN THE ROOM DETERMINED BY THE REFRIGERANT MONITORING STATION EXCEEDS THE CONCENTRATION LEVEL SETPOINT, THE OUTSIDE AIR DAMPER FOR THE LOUVER SHALL OPEN AND ALARM THE BAS. AFTER THE DAMPER IS FULLY OPEN, DETERMINED BY A DAMPER END SWITCH, THE EXHAUST FAN SHALL START. ONCE THE REFRIGERANT LEVEL IN THE ROOM FALLS BELOW THE CONCENTRATION LEVEL SETPOINT, THE FAN SHALL STOP. AFTER THE FAN IS STOPPED

THE OUTSIDE AIR DAMPER SHALL CLOSE.

L. EXHAUST FAN, (E)EF-4 (SHOWN FOR REFERENCE ONLY)

1. ON A RISE IN SPACE TEMPERATURE ABOVE THE THERMOSTAT SETPOINT, THE OUTSIDE AIR DAMPER FOR THE LOUVER SHALL OPEN. AFTER THE DAMPER IS FULLY OPEN, DETERMINED BY A DAMPER END SWITCH, THE EXHAUST FAN SHALL START.

2. ONCE THE SPACE TEMPERATURE DROPS BELOW THE THERMOSTAT SETPOINT, THE FAN SHALL STOP. AFTER THE FAN IS

STOPPED THE OUTSIDE AIR DAMPER SHALL CLOSE.

B DETAIL - TYPICAL INTERIOR HOUSEKEEPING PAD

A DETAIL - WALL MOUNTED TRANSFORMER

1 ENLARGED MECHANICAL ROOM PLAN - ELECTRICAL DEMOLITION

2 SITE KEY PLAN

1 ENLARGED MECHANICAL ROOM PLAN - ELECTRICAL NEW WORK

2 SITE KEY PLAN

1 ONE-LINE DIAGRAM - MOTOR CONTROL CENTER - DEMOLITION

2 ONE-LINE DIAGRAM - MOTOR CONTROL CENTER - NEW WORK