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110-400 Fort Whyte Way, Oak Bluff, MB, R4G 0B1 TEL. (204) 231-1094 FAX. (204) 231-1661 E-mail: sveto@ambassadormechanical.com 0BTRANSMITTAL SHEET To: Saher Kilada Project: Southeast Collegiate Con-Pro industries Canada 765 Marion Street Winnipeg MB Date: July 18, 2016 Cc: Sent by: John Martens The Following items: Are being transmitted to you: Drawings Delivered in person Shop Drawings Yes E-Mailed Yes Picked Couriered Item Title No. of Copies 1 Shop Drawings for: AHU-1/2, REVISION 1 1 2 3 4 By John Martens at 11:58 am, Jul 18, 2016 Remarks: Please process this submission ASAP. L.F. 16/07/25 1

SUBMITTALS JOB NAME: CONTRACTOR: ENGINEER: Southeast Collegiate AHU-1 Ambassador Mechanical Epp Siepman DATE: July 15, 2016 DOCUMENT INCLUDES: Price Mechanical AHU-1 Submittal REV1 EH PRICE PROJECT MANAGERS: Cale David Waleed Adham cdavid@ehpricesales.com wadham@ehpricesales.com (204) 982-4216 (204) 982-4211 EH PRICE ENGINEERING SUPPORT: Corey Nation Doug Castor cnation@ehpricesales.com dcastor@ehpricesales.com (204) 982-4213 (204) 982-2220 www.pricewinnipegsales.com

Price Mechanical, Inc. The Science of Comfort TM A Division of Price Industries 404 Egesz Street Winnipeg, MB R2R 1X5 CAN Phone: (204) 633.4808 Fax: (204) 694.7280 Engineer s Approval Stamp Contractor s Approval Stamp Other Approval Stamp Submittal Issue #: 0 Date:, 2016 Project: Location: PMI Job #: Consulting Engineer: Contractor: PMI Sales Office: Southeast Collegiate Winnipeg, MB MA489 AMBASSADOR MECHANICAL CORP E.H. PRICE SALES - WINNIPEG Line Item Unit Tag PMI Model # 1 AHU-1 PMI-IF-22-600H Price Mechanical, Inc.

Price Mechanical Inc (PMI) PMI-IF-Submittal Page 1 of 2 PROJECT: PRICE CONTACT: JOB NO.: SE COLLEGIATE Harry Brady AH16-00261 DATE: 4/24/2016 REVISION NO.: 0 CUSTOMER: E.H. Price Sales - Winnipeg JOB INFORMATION NUMBER OF UNITS: 1 TAG: AHU-1 ALTITUDE: 0 GENERAL UNIT INFORMATION MODEL NUMBER: PMI-IF-22-600H UNIT ORIENTATION: Horizontal UNIT LOCATION: Indoor UNIT DISCHARGE: Top APPROX. WEIGHT (LBS): 10,348 QTY SPLITS / SECTIONS: 0 / 1 SUPPLY FAN INFORMATION AIRFLOW (cfm): 18,000 FAN TYPE: EPF Pln- 9 Bl CL I Arr 3 AMCA MOTOR HP: 0 MOTOR TYPE: ODP High Efficiency TSP (in. w.c.): 4.13 CLASS: I ESP (in. w.c.): 1.5 SPEED (rpm) 1, FAN BRAKE HP: 16.6 VFD: RETURN FAN INFORMATION AIRFLOW (cfm): 1,00 FAN TYPE: DWDI FC Ventco MOTOR HP: MOTOR TYPE: ODP High Efficiency ESP (in. w.c.): 1. CLASS: K FAN BRAKE HP: SPEED (rpm) VFD: FILTER INFORMATION PREFILTER TYPE: 2" Flat - 2" MERV 8 MAIN FILTER TYPE: 12" Cartridge Filter - MERV 1 HEAT INFORMATION GAS TYPE: Natural Gas MANIFOLD TYPE: Modulating TURNDOWN: 15:1 INLET PRESSURE: 7-14 in wc HEAT TYPE: Indirect INLET SIZE (NPT) 1 INPUT (kbtu/h): 600.0 TEMP. RISE (F): 28 OUTPUT (kbtu/h): 540.0 COOLING INFORMATION EAT DB (F): 80 LAT DB (F): EAT WB (F): 67 LAT WB (F): 56 COIL ROWS 4 TOTAL COOL (kbtu/h): COIL FPI 1 SENSIBLE COOL (kbtu/h): COIL APD (in. w.c.): 0.3 FACE VELOCITY (fpm): AH16-00261 SE Collegiate AHU-1 REV3 1.20A.xlsm

Price Mechanical Inc (PMI) PMI-IF-Submittal Page 2 of 2 PROJECT: PRICE CONTACT: JOB NO.: SE COLLEGIATE Harry Brady AH16-00261 DATE: 4/24/2016 REVISION NO.: 0 CUSTOMER: E.H. Price Sales - Winnipeg JOB INFORMATION NUMBER OF UNITS: 1 TAG: AHU-1 ALTITUDE: 0 ELECTRICAL INFORMATION Electrical Comments: Coordinate changes in electrical requirements with the electrical contractor. POWER: 575/3/60 UNIT MROPD (amps): 5 UNIT MCA (Amps): 3 UNIT FLA (amps): FEATURES 3# density 2" fiberglass Insulation Door Handles: Std w/ Latching Composite Handles Standard 18 Ga Painted Casing Standard No Liner, except in furnace section 6" Structural Steel Hinged access doors Gas train weather housing High efficiency furnaces provided with condensate neutralizer kit Internal 1" Spring fan isolation OSHA fan belt guard Modulating gas heat R-410A DX rerfrigeration circuits charged and tested by others Condensing unit, piping and refrigerant by others. Field suplied and installed DDC controller with BACnet communication Magnehelic filter gauge TAMCO 9000 Aluminum Relief damper with Modulating damper actuator. Opposed. Control by others. TAMCO 9000/1000 Aluminum Inlet and Mixing dampers with damper actuator. Parallel. Automatic low limit Automatic season switch (Ambient Temperature Controller) Marine Lights with Pilot lit Switches in Each Access Bay. "EMT" conduit. 120v by othersremote supervisor panel c/w remote temprature selector and dirty filter light Disconnect by others Standard enclosure NEMA 1 for indoor ETL Approved For all fans: - Confirm use of fan bearings according to spec. - Confirm adjustable drives on fans with motors <=7.5 hp, and fixed drives for >7.5 hp AH16-00261 SE Collegiate AHU-1 REV3 1.20A.xlsm

Customer: Job ID: Date: July 05, 2016 Job Name: Tag: Fan information Size/Model........... 330/EPF Class...................... I Outlet Vel (FPM).......... 2128 Volumetric Flow (CFM).... 18000 Speed (RPM)............ 1269 Density (lb/ft³)............ 0.075 SP (in WC)................ 4.1 Max Speed.. 1273 RPM @ 70 F Power (BHP)........... 16.65 Adjusted for Sound Power Ea. Octave Bands 1 2 3 4 Inlet db 88 97 101 95 Outlet db 91 95 102 98 5 6 7 8 LwA dba 84 81 75 69 96 82 91 87 79 71 99 84 LwA: The overall (single value) fan sound power level in db re. 10-12 Watts, A weighted. dba: Estimated sound pressure level (re:0.0002 microbar) based on a single ducted installation at 5 ft., using a directivity factor of 1. Ver 10.0 October 2013 - Created Updated Owner All quotations per Twin City Fan Terms and Conditions found at www.twincityfan.com/tc_tcf.pdf Page 1 of 2

Information Project: MA489 AHU-1 Coil Name: New Evaporator Coil 1 Coil ID: 21190 Date: 7/6/2016 2:43:34 PM Model #: DXG04C11-77.50x66.00R Physical Data Materials Internal Fluid Coils/Bank: 1 Fin Type: 1/2" 1.25" x 1.083" Waffle Fin Height: 77.5" Fin Length: 66" Rows: 4 Fins/Inch: 11 # Feeds: 24 Dry Weight (ea.): 332 Lbs. Performance Fin Matl: Aluminum 0.0060 in. Tube Matl: Copper 0.016 in. Airside Airflow: 18000 SCFM Altitude: 0 ft. Ent. DB/WB: 80 F / 67 F Capacity Req'd: 595 MBH EZ-Coil Selection Software Version: 5.0.0.0 Refrigerant: R410a Liquid Temp: 110 F Evap. Temp: 45 Lvg. Super Heat: 5 Construction Coil Style: Interlaced2Circ Coil Hand: Right Casing Matl: 16 Ga Galv Steel Casing Type: Flanged Connection Matl: Copper Connection Type: SWT Description Model Rows/FPI Total Capacity Sensible Capacity Lvg Air DB/WB Face Velocity Refrigerant Charge Air Pressure Drop Ref Pressure Drop Total Feeds Tube Vapor Velocity Suction Conn Suction Line Velocity Distributor #1 Distributor #2 Dry Weight (ea.) UOM MBH MBH F SFPM lbs in wc psi FPM FPM Model Model Lbs Evaporator Perf. DXG04C11-77.50x66.00R 4 / 11 595 439 57.9/56.5 506.74 15.72 0.39 7.95 24 2,036 2.125 1,454 1102-12-5/16-25 1102-12-5/16-25 332 Special Notes: Coil is outside the scope of AHRI Standard 410. 440 Industrial Drive * Moscow, TN * 888-302-6049 PH:901-877-3333 * Fax:901-877-3335 * Email: sales@coilmastercorp.com * www.coilmastercorp.com

Coilmaster will revise any drawing that contains component interferences TUBE MATERIAL 0.5 x 0.016 7.25 HDx1 9.38 HDx3 Copper Smooth FIN MATERIAL 11 Fins Per Inch 6.50 CD 0.006 Aluminum 1.75 RB 66 FL 72.75 OAL 1.5 TF 5.00 HD2 4.00 SL2 AIRFLOW 0.56 S3 2.69 S1 V Waffle CASING MATERIAL 16 Ga. Galvanized Steel COIL TUBE FACE Tube Face = 62 CIRCUITING 10 Passes per Feed C1: 12 Feed C2: 12 Feed 8 Dropped Tubes 80.50 CH HEADER MATERIAL 37.69 I1 77.5 FH Type L Copper DISTRIBUTORS (2)1102-12-5/16-25(0 ASC) 45.19 I3 OD:1-3/8 RETURN CONN SIZE 2.125" OD Header 1.5 RF 1.5 BF Casing Style: Flanged Stacking Flanges: True ALL DIMENSIONS ARE IN INCHES THIS DRAWING IS THE PROPERTY OF COILMASTER AND MAY NOT BE REPRODUCED OR DELIVERED TO OTHERS WITHOUT THE EXPRESS WRITTEN CONSENT OF COILMASTER 69.00 CL ROWS X FH FL CH CL CD HD OAL SL I S O R TF BF HF RF RB 4.00 77.50 66.00 80.50 69.00 6.50 5 72.75 4.00 37.69 2.69 2.62 1.63 1.50 1.50 1.50 1.50 1.75 NOTES: 1.50 HF 5.12 O4 2.62 O2 1.63 R2 4.25 R4 Tag: Coil ID = 21190 2.125" SWT-Copper FASTENER TYPE Rivets DRY WEIGHT 331.6 Lbs. Per Coil INTERNAL VOLUME 3,384 in^3 Per Coil WO # Item: 1 TUBE SUPPORTS RECOMMENDED FOR COILS OVER 50" LONG ALL COILS ARE TESTED WITH 550 P.S.I. DRY NIGROGEN DRAWING CREATED 7/6/2016 2:44:03 PM Qty: 1 R. Gamble DXG04C11-77.50x66.00R Rev: A

MA 489 C & D South East Collegiate AHU-1 & AHU-2 SYSTEM SWITCH "ON" Unit operation is based on an occupancy schedule. In occupied mode the fresh air dampers open fully and once the damper end switch makes, the supply fan starts and runs continuously and the exhaust fan interlock is closed (dry contact). In Unoccupied mode the unit is inoperative. The fresh air damper is closed, and exhaust fan interlock opens. The unit will shut down during a fault or when instructed to shut down by an operator. The discharge air temperature setpoint is adjusted via network or analog input on the controller to any value between 50 F and 90 F. On unit start-up the initial mode of operation will be: Heating if the ambient temperature is less than 50 F or there is a call for heating. Economy if the ambient temperature is between 50 F and 75 F and there is no call for heating Economizer Operation The Economizer is enabled whenever the unit is ON. The unit will operate in purely Economizer Mode when the discharge air temperature deadband is achievable without heating or cooling. If the discharge temperature deviates away from the discharge air temperature setpoint by more than ±3 F (adjustable) for a period of 2 minutes (adjustable), the unit will enter either Mechanical Cooling or Heating Modes (if equipped). Heating Operation Heating Mode is enabled when the Economizer cannot maintain a discharge air temperature of at least 3 F (adjustable) below the discharge air temperature setpoint for a period of 2 minutes (adjustable) or if the Heating Call is set to ON. Heating Mode is locked out when the ambient air temperature is above the High Ambient Heating Lockout Setpoint or when Mechanical Cooling Mode is active. Heating will modulate to maintain the discharge air temperature setpoint. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 1

MA 489 C & D South East Collegiate AHU-1 & AHU-2 Once the discharge air temperature PID has been below 1% for a period of 1 minute (adjustable) and/or the heating call is turned off, the unit will transition into Economizer mode if the air entering the burner (outside air) is above 40 F. If the unit starts due to a call for heat, the burner motor starts and purges the heat exchanger for 90 seconds. Following the purge period, the burner ignites, the fresh air damper opens, and once the damper end switch makes, the supply fan starts and runs continuously. The burner modulates to maintain the discharge air temperature as set by the room temperature reset controls. If the unit is already running and subsequently enters heat mode or is called for heat, the fresh air damper will remain open and the supply fan will continue to run, while the burner purges, ignites and warms up. Ignition is always started at high fire. Modulation of the burner begins after the gas valve has been open for 10 seconds. If the run command or contact is opened when the burner has recently been on or is currently on, the unit will remain on to cool the burner, until the discharge temperature is less than 70 F. Shutdown due to a fault, other than an interlock fault (if input exists), is immediate. The burner will be disabled if the burner condensate overflow switch opens. There is a 10 second delay on opening and closing to debounce this switch. When an overflow occurs, the unit will shut down after a normal cool down cycle if the unit was servicing a heat call, otherwise, it will continue running without heating. SYSTEM SWITCH "OFF" The unit is inoperative. The fresh air damper is closed, and exhaust fan interlock opens. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 2

MA 489 C & D South East Collegiate AHU-1 & AHU-2 ADDITIONAL CONTROLS Heat Trace When the outside air temperature drops below 40 F (adjustable), frost protecting heat trace is powered. Automatic Low Limit If the discharge air temperature falls below the low limit threshold of 40 F, the unit shuts down. A 7 minute time delay on unit start-up allows for a cold start. Automatic High Limit If the discharge air temperature ever goes above the high limit threshold of 150 F, the unit shuts down. A manual reset is required to restart the unit. NOTE: THE CONTROL SET-POINTS LISTED IN THIS DOCUMENT ARE FACTORY DEFAULTS AND MAY HAVE BEEN CHANGED BY OTHERS DURING FIELD INSTALLATION OR START-UP. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 3

SUBMITTALS JOB NAME: CONTRACTOR: ENGINEER: Southeast Collegiate AHU-2 Ambassador Mechanical Epp Siepman DATE: July 15, 2016 DOCUMENT INCLUDES: Price Mechanical AHU-2 Submittal REV1 EH PRICE PROJECT MANAGERS: Cale David Waleed Adham cdavid@ehpricesales.com wadham@ehpricesales.com (204) 982-4216 (204) 982-4211 EH PRICE ENGINEERING SUPPORT: Corey Nation Doug Castor cnation@ehpricesales.com dcastor@ehpricesales.com (204) 982-4213 (204) 982-2220 www.pricewinnipegsales.com

Price Mechanical, Inc. The Science of Comfort TM A Division of Price Industries 404 Egesz Street Winnipeg, MB R2R 1X5 CAN Phone: (204) 633.4808 Fax: (204) 694.7280 Engineer s Approval Stamp Contractor s Approval Stamp Other Approval Stamp Submittal Issue #: 0 Date: Ju, 2016 Project: Location: PMI Job #: Consulting Engineer: Contractor: PMI Sales Office: Southeast Collegiate Winnipeg, MB MA489 AMBASSADOR MECHANICAL CORP E.H. PRICE SALES - WINNIPEG Line Item Unit Tag PMI Model # 1 AHU-2 PMI-IF-12-400H Price Mechanical, Inc.

Price Mechanical Inc (PMI) PMI-IF-Submittal Page 1 of 2 PROJECT: SE COLLEGIATE PRICE CONTACT: Harry Brady JOB NO.: AH16-00261 DATE: 4/24/2016 REVISION NO.: 0 CUSTOMER: E.H. Price Sales - Winnipeg JOB INFORMATION NUMBER OF UNITS: 1 TAG: AHU-2 ALTITUDE: 0 GENERAL UNIT INFORMATION schedule. MODEL NUMBER: PMI-IF-12-400H UNIT ORIENTATION: Horizontal Confirm with UNIT LOCATION: Indoor UNIT DISCHARGE: Horizontal structural APPROX. WEIGHT (LBS):, QTY SPLITS / SECTIONS: 0 / 1 SUPPLY FAN INFORMATION 12% heavier than before ordering AIRFLOW (cfm): 6,650 FAN TYPE: EPF Pln- 9 Bl CL I Arr 3 AMCA MOTOR HP: 7.5 MOTOR TYPE: ODP High Efficiency TSP (in. w.c.): 4.16 CLASS: I ESP (in. w.c.): 1.5 SPEED (rpm) 1,735 FAN BRAKE HP: 6.3 VFD: By Others RETURN FAN INFORMATION AIRFLOW (cfm): 4,720 FAN TYPE: DWDI TFC Ventco MOTOR HP: 3 MOTOR TYPE: ODP High Efficiency ESP (in. w.c.): 1 CLASS: K FAN BRAKE HP: 2.53 SPEED (rpm) 1,041 VFD: By Others FILTER INFORMATION PREFILTER TYPE: 2" Flat - 2" MERV 8 MAIN FILTER TYPE: 12" Cartridge Filter - MERV 1 HEAT INFORMATION GAS TYPE: Natural Gas MANIFOLD TYPE: Modulating TURNDOWN: 10:1 INLET PRESSURE: 7-14 in wc HEAT TYPE: Indirect INLET SIZE (NPT) 0.75 INPUT (kbtu/h): 400.0 TEMP. RISE (F): 50 OUTPUT (kbtu/h): 360.0 COOLING INFORMATION EAT DB (F): 80 LAT DB (F): 57 EAT WB (F): 67 LAT WB (F): 55.3 COIL ROWS 4 TOTAL COOL (kbtu/h): 235.6 COIL FPI 11 SENSIBLE COOL (kbtu/h): 167.0 COIL APD (in. w.c.): 0.36 FACE VELOCITY (fpm): 470 AH16-00261 SE Collegiate AHU-2 REV3 1.20A.xlsm

Price Mechanical Inc (PMI) PMI-IF-Submittal Page 2 of 2 PROJECT: SE COLLEGIATE PRICE CONTACT: Harry Brady JOB NO.: AH16-00261 DATE: 4/24/2016 REVISION NO.: 0 CUSTOMER: E.H. Price Sales - Winnipeg JOB INFORMATION NUMBER OF UNITS: 1 TAG: AHU-2 ALTITUDE: 0 ELECTRICAL INFORMATION Electrical Comments: Coordinate changes in electrical requirements with the electrical contractor. POWER: 575/3/60 UNIT MROPD (amps): 20 UNIT MCA (Amps): 14 UNIT FLA (amps): 12 FEATURES 3# density 2" fiberglass insulation Door Handles: Std w/ Latching Composite Handles Standard 18 Ga Painted Casing Standard No Liner, except in furnace section 6" Structural Steel Hinged access doors Gas train weather housing High efficiency furnaces provided with condensate neutralizer kit Internal 1" Spring fan isolation OSHA fan belt guard Modulating gas heat R-410A DX refrigeration circuits charged and tested by others Condensing unit, piping and refrigerant by others. Field suplied and installed DDC controller with BACnet communication Magnehelic filter gauge TAMCO 9000 Aluminum Relief damper with modulating damper actuator. Control by others. OpposedTAMCO 9000/1000 Aluminum Inlet and Mixing dampers with damper actuator. Parallel Automatic low limit Automatic season switch (Ambient Temperature Controller) Marine Lights with Pilot lit Switches in Each Access Bay. "EMT" conduit. 120v by others Remote supervisor panel c/w remote temprature selector and dirty filter light Disconnect by Others Standard enclosure NEMA 1 for indoor ETL Approved For all fans: - Confirm use of fan bearings according to spec. - Confirm adjustable drives on fans with motors <=7.5 hp, and fixed drives for >7.5 hp - Confirm fan shaft and drives will be provided with a rust inhibiting coating. AH16-00261 SE Collegiate AHU-2 REV3 1.20A.xlsm

Unit length exceeds specified. Contractor will be required to adjust mech room layout to suit unit length.

Job Name: South Collegiate Customer: Job ID: AH16-00261 Date: April 24, 2016 Tag: Fan information Size/Model........... 222/EPF Class...................... I Outlet Vel (FPM).......... 1733 Volumetric Flow (CFM)..... 6650 Speed (RPM)............ 1735 Density (lb/ft³)............ 0.075 SP (in WC)................ 4.2 Max Speed.. 1,888 RPM @ 70 F Power (BHP)............. 6.3 Adjusted for Sound Power Octave Bands 1 2 3 4 Inlet db 84 87 93 88 Outlet db 87 89 92 90 5 6 7 8 LwA dba 78 75 71 68 89 74 85 80 76 72 91 77 LwA: The overall (single value) fan sound power level in db re. 10-12 Watts, A weighted. dba: Estimated sound pressure level (re:0.0002 microbar) based on a single ducted installation at 5 ft., using a directivity factor of 1. Ver 10.0 October 2013 - Created 04-24-2016 Updated 04-24-2016 Owner Wade Link Price Mechanical Industries All quotations per Twin City Fan Terms and Conditions found at www.twincityfan.com/tc_tcf.pdf Page 1 of 2

Job Name: South Collegiate Customer: Job ID: AH16-00261 Date: April 24, 2016 Tag: Fan information Size/Model............ 12/VFC Class...................... R Outlet Vel (FPM).......... 2686 Volumetric Flow (CFM)..... 4720 Speed (RPM)............ 1041 Density (lb/ft³)............ 0.075 SP (in WC)................ 1.6 Max Speed.. 1,900 RPM @ 70 F Power (BHP)............ 2.53 Adjusted for Sound Power Octave Bands 1 2 3 4 Inlet db 84 89 84 81 5 6 7 8 LwA dba 82 79 77 73 87 72 LwA: The overall (single value) fan sound power level in db re. 10-12 Watts, A weighted. dba: Estimated sound pressure level (re:0.0002 microbar) based on a single ducted installation at 5 ft., using a directivity factor of 1. Ver 10.0 October 2013 - Created 04-24-2016 Updated 04-24-2016 Owner Wade Link Price Mechanical Industries All quotations per Twin City Fan Terms and Conditions found at www.twincityfan.com/tc_tcf.pdf Page 1 of 2

MA 489 C & D South East Collegiate AHU-1 & AHU-2 SYSTEM SWITCH "ON" Unit operation is based on an occupancy schedule. In occupied mode the fresh air dampers open fully and once the damper end switch makes, the supply fan starts and runs continuously and the exhaust fan interlock is closed (dry contact). In Unoccupied mode the unit is inoperative. The fresh air damper is closed, and exhaust fan interlock opens. The unit will shut down during a fault or when instructed to shut down by an operator. The discharge air temperature setpoint is adjusted via network or analog input on the controller to any value between 50 F and 90 F. On unit start-up the initial mode of operation will be: Heating if the ambient temperature is less than 50 F or there is a call for heating. Economy if the ambient temperature is between 50 F and 75 F and there is no call for heating Economizer Operation The Economizer is enabled whenever the unit is ON. The unit will operate in purely Economizer Mode when the discharge air temperature deadband is achievable without heating or cooling. If the discharge temperature deviates away from the discharge air temperature setpoint by more than ±3 F (adjustable) for a period of 2 minutes (adjustable), the unit will enter either Mechanical Cooling or Heating Modes (if equipped). Heating Operation Heating Mode is enabled when the Economizer cannot maintain a discharge air temperature of at least 3 F (adjustable) below the discharge air temperature setpoint for a period of 2 minutes (adjustable) or if the Heating Call is set to ON. Heating Mode is locked out when the ambient air temperature is above the High Ambient Heating Lockout Setpoint or when Mechanical Cooling Mode is active. Heating will modulate to maintain the discharge air temperature setpoint. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 1

MA 489 C & D South East Collegiate AHU-1 & AHU-2 Once the discharge air temperature PID has been below 1% for a period of 1 minute (adjustable) and/or the heating call is turned off, the unit will transition into Economizer mode if the air entering the burner (outside air) is above 40 F. If the unit starts due to a call for heat, the burner motor starts and purges the heat exchanger for 90 seconds. Following the purge period, the burner ignites, the fresh air damper opens, and once the damper end switch makes, the supply fan starts and runs continuously. The burner modulates to maintain the discharge air temperature as set by the room temperature reset controls. If the unit is already running and subsequently enters heat mode or is called for heat, the fresh air damper will remain open and the supply fan will continue to run, while the burner purges, ignites and warms up. Ignition is always started at high fire. Modulation of the burner begins after the gas valve has been open for 10 seconds. If the run command or contact is opened when the burner has recently been on or is currently on, the unit will remain on to cool the burner, until the discharge temperature is less than 70 F. Shutdown due to a fault, other than an interlock fault (if input exists), is immediate. The burner will be disabled if the burner condensate overflow switch opens. There is a 10 second delay on opening and closing to debounce this switch. When an overflow occurs, the unit will shut down after a normal cool down cycle if the unit was servicing a heat call, otherwise, it will continue running without heating. SYSTEM SWITCH "OFF" The unit is inoperative. The fresh air damper is closed, and exhaust fan interlock opens. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 2

MA 489 C & D South East Collegiate AHU-1 & AHU-2 ADDITIONAL CONTROLS Heat Trace When the outside air temperature drops below 40 F (adjustable), frost protecting heat trace is powered. Automatic Low Limit If the discharge air temperature falls below the low limit threshold of 40 F, the unit shuts down. A 7 minute time delay on unit start-up allows for a cold start. Automatic High Limit If the discharge air temperature ever goes above the high limit threshold of 150 F, the unit shuts down. A manual reset is required to restart the unit. NOTE: THE CONTROL SET-POINTS LISTED IN THIS DOCUMENT ARE FACTORY DEFAULTS AND MAY HAVE BEEN CHANGED BY OTHERS DURING FIELD INSTALLATION OR START-UP. MA489 South East Collegiate SEQUENCE OF OPERATION REV 00, May 2016 3