Carrier 62Mb Users Manual
62MD 62m-1si
62MD to the manual 11728cc6-bf0b-4b88-97a7-2aae092214b9
2015-01-24
: Carrier Carrier-62Mb-Users-Manual-311079 carrier-62mb-users-manual-311079 carrier pdf
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62MB,MC,MD,ME040-950 Energy Recovery Ventilators Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-58 Step 1 — Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Step 2 — Install Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . 1 • STAND-ALONE APPLICATIONS • COUPLED APPLICATIONS Step 3 — Rigging and Handling . . . . . . . . . . . . . . . . . 45 • MOUNTING THE UNIT INDOORS Step 4 — Installing ERV Transitions . . . . . . . . . . . . . . . 47 • ERV UNIT COUPLED WITH A 3 TO 12 1/2 TON HVAC UNIT Step 5 — Make Electrical Connections . . . . . . . . . . . . 47 • POWER SUPPLY • ELECTRICAL CONNECTIONS START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59-75 Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Rain Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Energy Recovery Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 59 • DRIVE BELT • AIR SEALS Blower Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Airflow Settings and Adjustments. . . . . . . . . . . . . . . 59 • FACTORY SETTING • CURVE SELECTION • ADJUST THE ERV BLOWER SPEED • MEASURE MOTOR VOLTAGE, AMPERAGE AND FAN RPM • BELT MAINTENANCE Variable Air Volume Option. . . . . . . . . . . . . . . . . . . . . . 74 Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 • OCCUPIED MODE • UNOCCUPIED MODE SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75-78 Removing Wheel Segments for Cleaning (62M170-950 Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Removing and Installing Non-Segmented Wheel for Cleaning (62M040 Units). . . . . . . . . . . . 75 Removing and Installing Non-Segmented Wheel for Cleaning (62M075,120 Units) . . . . . . . 76 Installing Wheel Segments (62M170-950 Units). . . 76 Wheel Drive Motor and Pulley Replacement . . . . . 77 Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78,79 START UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1 SAFETY CONSIDERATIONS Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work gloves. These instructions describe how to install, start up, and service 62M energy recovery ventilator units. Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed. INTRODUCTION The 62M energy recovery ventilator (ERV) units recover energy from building exhaust air and pre-condition ventilation air. All ERV units are available in either vertical discharge (through the bottom) or horizontal discharge configuration. The 62MB and MC vertical discharge units are used when a stand-alone ERV unit is required. The 62MD and ME horizontal discharge unit can be used as a stand-alone unit, or can also be coupled with a Carrier rooftop unit. INSTALLATION Step 1 — Inspection — Inspect the unit; file a claim with the shipping company if the unit is damaged. Check the packing list to ensure that the correct items have been received and notify your Carrier representative of any discrepancy. Step 2 — Install Roof Curb STAND-ALONE APPLICATIONS — The ERV unit can be installed without being coupled with a Carrier rooftop unit. The ERV units can be installed in one of three stand-alone applications: down discharge, horizontal discharge, or a combination of both down discharge and horizontal discharge. When installing a stand-alone ERV unit refer to Fig. 1-45 and, complete the following: Locate the Roof Curb — Prior to locating the roof curb consider the structural support required for the rooftop system and, the duct drop location in relation to the joists. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 536-220 Printed in U.S.A. Form 62M-1SI Pg 1 1-06 Replaces: New Book 1 4 Tab 10a 12a Cover roof opening if installation of the ERV unit will not be immediate. Failure to cover roof opening could result in water damage and/or serious personal injury. END Assemble the Roof Curb — Connect the curb side and the curb end. See Fig. 1. Insert the tabs on the curb end into the slots on the curb sides. Press firmly until the pieces lock into place. It may be necessary to exert additional force to the top of the curb to lock the pieces in place. Ensure the curb pieces are locked together prior to proceeding. Repeat for all corners of the roof curb. Prepare Roof Curb Location — Cut a hole in the roof for duct openings. See Fig. 2-5 for duct opening dimensions. Frame the opening to provide adequate structural support. Install Deck Pans and Duct Supports — The roof curb may have a duct support and deck pans, depending on the model and application. Determine which end of the roof curb will be the duct end. Install the deck pans on the roof curb with the insulation side facing up toward the ERV base. Install the duct support between the supply and return openings. Set the Roof Curb — Fit the roof curb assembly by measuring across the corners of the curb to ensure a square fit. Set the roof curb over the roof opening. Level the curb by placing shims under the bottom flange of the curb. Secure the curb in place by welding or fastening the curb to the roof. SIDE Fig. 1 — Assembling the Roof Curb for applying roofing materials. The roofing material should extend up to the wood nailer and be secured under the counterflashing. Follow all local, national, and industry roofing standards. Refer to Fig. 6 for roofing recommendations. COUPLED APPLICATIONS — The ERV unit can be installed directly coupled to a Carrier rooftop unit. The connection between the ERV and HVAC (Heating, Ventilation, and Air Conditioning) unit is made with the use of a transition. In a coupled rooftop application there is a separate roof curb for the HVAC curb and a separate roof curb for the ERV unit. See Fig. 4 and 5 for roof curb dimensions. Locate the Roof Curb — Prior to locating the roof curb consider the structural support required for the rooftop system and, the duct drop location in relation to the joists. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to the rooftop installation instructions for more information regarding location considerations. Assemble the Roof Curb — Connect the curb side and the curb end. Insert the tabs on the curb end into the slots on the curb sides. Press firmly until the pieces lock in to place. It may be necessary to exert additional force to the top of the curb to lock the pieces in place. Ensure the curb pieces are locked together prior to proceeding. Repeat for other corners of the roof curb. NOTE: If lifting or moving the roof curb assembly hammer the tabs over 90 degrees. Install Deck Pans and Duct Supports — The roof curb may have a duct support and deck pans, depending on the model and application. Refer to Fig. 2-5. Determine which end of the roof curb will be the duct end. Install the deck pans on the roof curb with the insulation side facing up toward the ERV base. Install the duct support between the supply and return openings. Install Locator Pieces — Some ERV roof curbs (62MA-CRB14MC and 62MB-CRB-14MC) will include locator pieces, which are to be attached to the ERV roof curb section. The locator pieces will help the installer ensure that the ERV and HVAC unit roof curbs are positioned properly. Attach the 2 side locator pieces to the ERV roof curb. Install the cover panel over the 2 sides and fasten in place. Cover the roof curb if installation of the ERV unit will not be immediate. Failure to cover the roof curb could result in water damage and/or serious personal injury. Install Ductwork — Ductwork will be installed in the roof curb for vertical discharge and stand-alone applications. The duct will hang from the top of the curb. See Fig. 45 for standalone application airflow. NOTE: Ductwork must be installed before the ERV unit is set in place. Refer to Fig. 2-5 to determine the duct size required. Provide field manufactured duct and place into the supply and return openings in the curb. Install Gaskets — The ERV roof curbs come with a gasketing package to provide a seal between the ERV unit and the top perimeter of the roof curb. Install the gasket around the top perimeter of the curb and around the supply and return opening. NOTE: Some stand-alone curbs will not have duct openings). Gasket strips must fit tightly together, leaving no gaps for leakage. IMPORTANT: Gasket installation is critical for water integrity. Improperly installed gaskets can result in air or water leaks, leading to poor unit performance. Install Roofing Materials — Insulate and add a cant strip to the roof curb. Follow suggested and acceptable roofing practices 2 Set the Roof Curb — Fit the roof curb assembly by measuring across the corners of the curb to ensure a square fit. Set the roof curb over the roof opening. Level the curb by placing shims under the bottom flange of the curb. Secure the curb in place by welding or fastening the curb to the roof. Refer to Fig. 2 and 3 to determine the duct size required. Provide field manufactured duct and place into the supply and return openings in the curb. Install Gaskets — The ERV roof curbs come with a gasketing package to provide a seal between the ERV unit and the top perimeter of the roof curb. Install the gasket around the top perimeter of the curb and around the supply and return opening. (Some stand-alone curbs will not have duct openings.) Gasket strips must fit tightly together, leaving no gaps for leakage. IMPORTANT: The ERV roof curb must be set in precisely the correct location relative to the rooftop roof curb for the transitions to connect properly. See Fig. 7-44 for location dimensions. IMPORTANT: Gasket installation is critical for water integrity. Improperly installed gaskets can result in air or water leaks, leading to poor unit performance. Install Ductwork — Ductwork will be installed in the roof curb for vertical, coupled applications. The duct will hang from the top of the curb. NOTE: Ductwork must be installed before the rooftop unit is set in place. NOTE: Ductwork must be installed before the ERV unit is set in place. Install Roofing Materials — Insulate and add a cant strip to the roof curb. Follow suggested and acceptable roofing procedures for applying roofing materials. The roofing material should extend up to the wood nailer and be secured under the counter flashing. Follow all local, national, and industry roofing standards. Refer to Fig. 5 for roofing recommendations. 24.09 SUPPLY 1.00 TYP. 4X 10.81 22.94 RETURN 14.00 11.50 3.00 TYP. 4X 11.00 NOTES: 1. All dimensions are in inches. 2. Roof curb shipped unassembled. Fig. 2 — Roof Curb — 62M040 for Stand-Alone Applications 3 Typical Insulated deck pans. (Insulation face up) * D S/A E F C R/A G H B LEGEND R/A — Return Air S/A — Supply Air A *IMPORTANT: Insulation on deck pans must face up. NOTE: Roof curb shipped unassembled. DIMENSIONS (in.) 62M UNIT SIZE CURB PART NO. A B C D E F 075,120 170-285 330-640 750,950 62M-A-CRB-14S 62M-B-CRB-14S 62M-C-CRB-14S 62M-D-CRB-14S 27 45.5 55.41 86.25 30.5 49.63 60.34 95.7 14 14 14 14 14 17.5 24.84 32.5 11.3 19.5 23.41 42.13 1 2 2 2 G 14.7 24 30 42.13 Duct Sizes Return Supply 13.75 x 14.38 13.75 x 11 17 x 23.5 17 x 19 24.5 x 29.5 24.5 x 23 32 x 41.75 32 x 41.75 H 1.5 1.75 — — Fig. 3 — Roof Curb — 62M075-950 for Vertical Stand-Alone Applications C ERV Curb B D A LEGEND ERV — Energy Recovery Ventilator NOTE: Roof curb shipped unassembled. 62M UNIT SIZE CURB PART NO. 075,120* 170-285† 330-640 750,950 62M-A-CRB-14S 62M-B-CRB-14S 62M-C-CRB-14M 62M-D-CRB-14M A 27 49.63 60.34 95.7 DIMENSIONS (in.) B C 30.5 14 14 45.5 14 55.41 14 86.25 D 1.5 1.75 1.75 1.75 *62M075,120 curb is shipped with deckpans insulation and duct supports which may be discarded. †62M170-285 curb is shipped with deck pans and insulation. Fig. 4 — Roof Curb — 62M075-950 for Horizontal Stand-Alone Applications or Units Coupled with Rooftop Units 15 Tons and Above 4 ERV Curb C Must be Watertight Locator pieces to connect ERV curb to rooftop unit curb B D A E LEGEND ERV — Energy Recovery Ventilator NOTE: Roof curb shipped unassembled. 62M UNIT SIZE CURB PART NO. 075,120 170-285 62M-A-CRB-14MC 62M-B-CRB-14MC A 30.5 49.63 DIMENSIONS (in.) B C D 14 27 1.5 14 45.5 1.75 Fig. 5 — Roof Curb — 62M075-285 Units 3 to 121/2 Ton Rooftop Units GASKETING ROOF CURB NAIL* RIGID INSULATION* FLASHING* CANT STRIP* ROOF FELT* ROOF DECK* ROOF* *Field provided. Fig. 6 — Roofing Materials — Recommendation 5 E 19.81 37.81 6 25.12 16 12.45 7.53 3.52 13.25 29.98 RETURN AIR* 12.75 RIGHT SIDE REAR SIDE .75 SUPPLY AIR 10.75 VIEW A-A 27.19 19.75 2.33 3.95 10.50 11.15 3.91 25.12 29.75 5.34 31.24 29.75 27.19 LEFT SIDE ERV WHEEL 4.83 7.13 TOP SIDE 45.75 SUPPLY AIR (OPTIONAL) 10 OPTIONAL (INDOOR) PREHEATER 16.00 22.90 A 12.45 11.09 3.95 3.48 POWER ENTRY OPTIONAL INDOOR PREHEATER 19.25 Fig. 7 — 62MB,MC040 Indoor Unit Dimensions HORIZONTAL UNITS ONLY* RETURN AIR (OPTIONAL) A 16 in. 0 in. 18 in. 18 in. 29.88 OUTSIDE AIR 13.26 2.67 FRONT SIDE EXHAUST AIR 8.43 7.69 16.02 *30 in. service clearance required on either Left or Right side for ERV wheel removal. NOTE: All dimensions are in inches. Front Rear Left* Right* REQUIRED SERVICE CLEARANCES 7 5.35 EXHAUST AIR HOOD 12.29 OUTSIDE AIR HOOD 13.72 12.45 7.53 3.52 29.98 RETURN AIR* 12.75 REAR SIDE .75 SUPPLY AIR 10.75 RIGHT SIDE VIEW A-A 19.75 2.33 3.55 TOP OF CURB 29.75 3.95 10.50 11.15 3.91 5.34 TOP SIDE 45.75 SUPPLY AIR (OPTIONAL) LEFT SIDE 29.75 ERV WHEEL 4.83 7.13 13.5 13.38 10 16.00 12.96 A EXHAUST AIR HOOD OUTSIDE AIR HOOD 12.45 11.09 3.95 3.48 POWER ENTRY OUTSIDE AIR HOOD AND OPTIONAL PREHEATER EXHAUST AIR HOOD 11.00 5.31 8.97 16.00 Fig. 8 — 62MD,ME040 Outdoor Unit Dimensions HORIZONTAL UNITS ONLY* RETURN AIR (OPTIONAL) A 27.5 in. 10 in. 20 in. 20 in. 29.88 OUTSIDE AIR 13.26 2.67 FRONT SIDE EXHAUST AIR 8.43 7.69 16.02 *30 in. service clearance required on either Left or Right side for ERV wheel removal. NOTE: All dimensions are in inches. Front Rear Left* Right* REQUIRED SERVICE CLEARANCES 8 REAR SIDE 5.58 37.14 6.18 12.98 3.46 9.25 6.65 LEFT SIDE 3.63 ACCESS DOOR 42.6 TOP SIDE 21.10 10.93 6.60 10.39 10.50 2.10 EXHAUST AIR 15.40 10.66 11.00 18.88 OPTIONAL PREHEATER A PREHEATER CABINET OPTIONAL PREHEATER (INDOOR) (OPTIONAL) AIRFLOW TEST PORTS EXHAUST AIR OUTLET 19.04 Fig. 9 — 62MB,MC075,120 Indoor Unit Dimensions OPTIONAL RETURN AIR (BOTTOM RETURN ONLY) POWER ENTRY / OPTIONAL DISCONNECT LOCATION 6.97 3.34 5.58 RETURN 14.50 10.32 18.63 SUPPLY 11.00 RIGHT SIDE VIEW A-A 6.13 18.63 5.53 12.90 21.10 SUPPLY AIR (BOTTOM SUPPLY ONLY) A 31 in. 0 in. 24 in. 39 in. 15.25 FRONT SIDE OUTSIDE AIR 39.03 8.63 23.00 3.88 NOTE: All dimensions are in inches. *39 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES 9 6.39 10.25 11.06 2.86 18.74 SUPPLY 9.19 REAR SIDE 6.43 RIGHT SIDE VIEW A-A 10.32 14.45 3.10 RETURN 39.8 ACCESS DOOR 43.10 6.97 18.55 6.18 12.98 3.46 9.25 6.65 10.93 6.60 10.39 42.60 TOP SIDE 2.87 9.60 19.04 A OUTDOOR AIR HOOD .87 9.59 13.24 AIRFLOW TEST PORTS (OPTIONAL) OPTIONAL PREHEATER 18.69 Fig. 10 — 62MD,ME075,120 Outdoor Unit Dimensions LEFT SIDE A 10.35 ERV WHEEL ACCESS DOOR 4.11 TOP OF CURB SEE DETAIL A DETAIL A EXHAUST AIR HOOD OPTIONAL RETURN AIR (BOTTOM RETURN ONLY) POWER ENTRY/ OPTIONAL DISCONNECT *NOTE* DISCONNECT LOCATION IS APPROXIMATE 5.62 37.14 SUPPLY AIR (BOTTOM SUPPLY ONLY) A 31 in. 0 in. 24 in. 39 in. 9.60 FRONT SIDE 35.711 39.03 NOTE: All dimensions are in inches. *39 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES 10 9.62 20.00 49.55 6.92 26.60 REAR SIDE RIGHT SIDE 23.00 3.16 RETURN AIR 6.48 VIEW A-A SUPPLY AIR 15.50 21.84 ACCESS DOOR 26.60 10.76 8.20 25.00 AIRFLOW TEST PORTS (OPTIONAL) 43.38 6.10 22.33 15.63 8.20 15.28 13.75 LEFT SIDE 62.03 TOP SIDE EXHAUST AIR OUTLET 8.68 EXHAUST AIR 14.86 12.50 14.57 POWER ENTRY (OPTIONAL DISCONNECT) 8.21 ERV WHEEL Fig. 11 — 62MB,MC170-285 Indoor Unit Dimensions RETURN AIR OPENING SUPPLY AIR OPENING A PREHEATER CABINET Front Rear Left Right* 39 in. 0 in. 32 in. 55 in. REQUIRED SERVICE CLEARANCES ACCESS DOOR 26.60 22.00 OUTSIDE AIR FRONT SIDE 57.91 11.18 36.00 NOTE: All dimensions are in inches. *55 in. service clearance required for ERV wheel removal. OPTIONAL PREHEATER A 11 9.16 20.78 9.62 20.00 6.92 SUPPLY AIR 15.50 RIGHT SIDE REAR SIDE VIEW A-A OUTSIDE AIR HOOD 23.00 3.16 RETURN AIR 6.48 8.20 25.00 49.55 6.10 22.33 15.63 8.20 15.28 13.75 LEFT SIDE 62.03 EXHAUST AIR 8.21 ERV WHEEL 12.50 14.57 26.45 .64 OPTIONAL PREHEATER POWER ENTRY (OPTIONAL DISCONNECT) 14.86 16.19 OUTSIDE AIR HOOD TOP SIDE EXHAUST AIR HOOD 8.68 6.94 15.96 A Fig. 12 — 62MD,ME170-285 Outdoor Unit Dimensions 43.38 RETURN AIR OPENING SUPPLY AIR OPENING A 14.84 57.91 A 4.61 TOP OF CURB OUTSIDE AIR HOOD NOTE: All dimensions are in inches. FRONT SIDE EXHAUST AIR HOOD 39 in. 0 in. 32 in. 55 in. *55 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES 12 6.11 37.50 65.21 REAR SIDE RETURN AIR SUPPLY AIR 6.61 28.50 19.00 7.66 RIGHT SIDE VIEW A-A ACCESS DOOR 29.00 2.87 14.63 6.11 37.50 8.01 LEFT SIDE TOP SIDE 72.63 17.00 20.00 EXHAUST AIR OPTIONAL AIRFLOW TEST PORTS EXHAUST AIR OUTLET 21.11 6.88 50 in. 0 in. 40 in. 62 in. 2.78 ACCESS DOOR 29.00 OUTSIDE AIR 5.11 27.00 FRONT SIDE 67.39 9.03 54.00 NOTE: All dimensions are in inches. *62 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES OPTIONAL PREHEATER PREHEATER CABINET POWER ENTRY (OPTIONAL DISCONNECT) A Fig. 13 — 62MB,MC330-640 Indoor Unit Dimensions 49.1 6.93 25.76 18.62 RETURN AIR OPENING (BOTTOM RETURN ONLY) SUPPLY AIR OPENING (BOTTOM SUPPLY ONLY) A 15.94 13 8.68 OUTSIDE AIR HOOD 6.11 37.50 26.41 REAR SIDE 2.87 RETURN AIR SUPPLY AIR 6.61 28.50 19.00 7.66 RIGHT SIDE VIEW A-A 6.93 25.76 49.1 RETURN AIR OPENING (BOTTOM RETURN ONLY) SUPPLY AIR OPENING (BOTTOM SUPPLY ONLY) 18.62 8.01 LEFT SIDE 19.69 72.63 20.00 EXHAUST AIR 17.00 OPTIONAL AIRFLOW TEST PORTS TOP SIDE EXHAUST AIR HOOD 21.11 15.94 6.88 12.52 EXHAUST AIR HOOD 9.22 17.96 OPTIONAL PREHEATER POWER ENTRY (OPTIONAL DISCONNECT) 7.63 A OUTSIDE AIR HOOD 29.44 Fig. 14 — 62MD,ME330-640 Outdoor Unit Dimensions 6.11 37.50 65.21 A 18.81 50 in. 0 in. 40 in. 62 in. FRONT SIDE 67.39 A 4.21 TOP OF CURB OUTSIDE AIR HOOD NOTE: All dimensions are in inches. *62 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES 14 7.69 40 13.11 16.19 28.00 SUPPLY AIR RIGHT SIDE REAR SIDE 35.75 RETURN AIR VIEW A-A 21.86 ACCESS DOOR 34.10 7.69 49.01 77.41 21.88 17.07 6.42 AIRFLOW TEST PORTS (OPTIONAL) LEFT SIDE 23.25 107.75 TOP SIDE EXHAUST AIR OUTLET 31.67 18.75 EXHAUST AIR 9.01 48.98 40.12 A Front Rear Left Right* 65 in. 0 in. 50 in. 72 in. REQUIRED SERVICE CLEARANCES 2.37 ACCESS DOOR 34.10 35.08 11.31 OUTSIDE AIR 12.77 FRONT SIDE 98.37 9.52 64.25 NOTE: All dimensions are in inches. *72 in. service clearance required for ERV wheel removal. OPTIONAL PREHEATER PREHEATER CABINET POWER ENTRY/ OPTIONAL DISCONNECT LOCATION 34 7/8 11.02 Fig. 15 — 62MB,MC750,950 Indoor Unit Dimensions 20.25 RETURN AIR OPENING 6.43 34.73 SUPPLY AIR OPENING A 15 8.83 7.69 33.71 40 13.11 16.19 28.00 SUPPLY AIR REAR SIDE RIGHT SIDE VIEW A-A OUTSIDE AIR HOOD 35.75 RETURN AIR 7.69 49.01 B 4.40 77.41 21.88 17.07 6.42 31.67 AIRFLOW TEST PORTS (OPTIONAL) 23.22 EXHAUST AIR TOP SIDE LEFT SIDE 23.25 107.75 EXHAUST AIR HOOD 18.75 17.16 34 7/8 9.01 48.98 21.58 A 2.89 23.81 OPTIONAL PREHEATER 40.12 11.02 POWER ENTRY/ OPTIONAL DISCONNECT LOCATION OUTSIDE AIR HOOD Fig. 16 — 62MD,ME750,950 Outdoor Unit Dimensions 20.25 RETURN AIR OPENING 6.43 34.73 SUPPLY AIR OPENING A 65 in. 0 in. 50 in. 72 in. EXHUAST AIR HOOD FRONT SIDE 98.37 OUTSIDE AIR HOOD NOTE: All dimensions are in inches. *72 in. service clearance required for ERV wheel removal. Front Rear Left Right* REQUIRED SERVICE CLEARANCES Rooftop Unit Filter access door shipped with Rooftop Unit 62M040 Unit Outside air hood with aluminum water entrainment filter. Includes barometric intake damper. Exhaust hood Evaporation Coil Filter Filters Accessory ERV Equipment support Standard Rooftop Unit roof curb EXH TRANSITION DETAIL Supply Blower Panel covering return chamber 3 to 6 Ton Rooftop Unit Outside air hood Filter ERV wheel Accessory Transition ROOF CURB LOCATION DETAIL 3” Access door to adjust balancing damper A To 62M040 Unit Balancing damper Supply A Return 35” 67 3/8” Rooftop Unit Curb Accessory ERV Equipment support 35" ERV Unit Support Side View A-A Rooftop Curb LEGEND ERV — Energy Recovery Ventilator 37” Top View ROOFTOP UNIT MODEL 48/50HJ,TJ,TM ROOFTOP SIZE 004-007 TRANSITION P/N 62M-AATR-HJ36-D ROOFTOP ECONOMIZER 62MA-900---004 ERV EQUIPMENT SUPPORT P/N 62MA-900---001 Fig. 17 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Vertical Discharge Rooftop Unit 16 Rooftop Unit Filter access door shipped with Rooftop Unit 62M040 Unit Field-Supplied Duct Exhaust hood Outside air hood with aluminum water entrainment filter. Includes barometric intake damper. Filter Accessory ERV Equipment support Standard Rooftop Unit roof curb EXH TRANSITION DETAIL Supply Blower Panel covering return chamber 3 to 6 Ton Rooftop Unit Outside air hood Filter ERV wheel Accessory Transition ROOF CURB LOCATION DETAIL 3” Access door to adjust balancing damper To 62M040 Unit Balancing damper Supply Return A 35” A 67 3/8” Rooftop Unit Curb Accessory ERV Equipment support 35" ERV Unit Support Side View A-A Rooftop Curb LEGEND ERV — Energy Recovery Ventilator 37” ROOFTOP UNIT MODEL 48/50HJ,TJ,TM ROOFTOP SIZE 004-007 TRANSITION P/N 62M-AATR-HJ36-D ROOFTOP ECONOMIZER 62MA-900---008 ERV EQUIPMENT SUPPORT P/N 62MA-900---001 Fig. 18 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Horizontal Discharge Rooftop Unit 17 Rooftop Unit Accessory Transition (Includes front panel) Rooftop Unit Supply TRANSITION DETAIL Return Accessory ERV Equipment support Accessory Transition Filter 2 Piece front panel covers return chamber ERV wheel Filter 62M040 Unit Exhaust hood Outside air hood Top View ROOF CURB LOCATION DETAIL To 62M040 Unit Access door to adjust balancing damper 35” 80 5/16” A 44 11/16” Supply A Return Rooftop Unit Curb 4 3/8” 35" ERV Unit Support Rooftop Curb LEGEND ERV — Energy Recovery Ventilator ROOFTOP UNIT MODEL 48/50PG Accessory ERV Equipment support ROOFTOP SIZE 03-07 TRANSITION P/N 62M-AATR-HJ36-D Side View A-A ERV EQUIPMENT SUPPORT P/N 62MA-900---001 Fig. 19 — 62MD,ME040 Coupled with Carrier 48/50PG03-07 Vertical Discharge Rooftop Unit 18 Rooftop Unit Accessory Transition (Includes front panel) Rooftop Unit TRANSITION DETAIL Accessory ERV Equipment support Accessory Transition 2 Piece front panel covers return chamber Filter ERV wheel Filter 62M040 Unit Exhaust hood Outside air hood Top View ROOF CURB LOCATION DETAIL A 44 11/16” To 62M040 Unit Access door to adjust balancing damper 35” 80 5/16” A Rooftop Unit Curb 4 3/8” 35" ERV Unit Support Rooftop Curb LEGEND ERV — Energy Recovery Ventilator ROOFTOP UNIT MODEL 48/50PG Accessory ERV Equipment support ROOFTOP SIZE 03-07 TRANSITION P/N 62M-AATR-HJ36-D Side View A-A ERV EQUIPMENT SUPPORT P/N 62MA-900---001 Fig. 20 — 62MD,ME040 Coupled with Carrier 48/50PG03-07 Horizontal Discharge Rooftop Unit 19 ROOF CURB LAYOUT TOP VIEW 67 3/8" A Supply Air Standard roof curb for 3 to 6 ton rooftop unit 37 3/16" Return Air 35 " 3" 34 3/8" 36" 62MA-900---001 Equipment Support A "A-A" SIDE VIEW Standard Roof curb for 3 to 6 ton roof top unit 35 " 62MA-900---001 Equipment Support 14" 10.4" Roof Fig. 21 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Rooftop Unit 20 Filter door shipped with Rooftop unit. 62M ERV Unit Rainhoods for optional economizer Rooftop unit Rooftop unit Unit curb Accessory Transition RETURN ERV Wheel 62M075,120 ERV Unit SUPPLY Locator pieces (included with ERV curb ERV curb, must be watertight) ROOF CURB LOCATION DETAIL B Rooftop Unit curb Locator Pieces ( included with ERV Curb) Cover panel provided 30.5” A ERV NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead. 27” 2 3/4" LEGEND — Energy Recovery Ventilator ERV curb 20" ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM TRANSITION P/N ERV CURB P/N ROOFTOP ECONOMIZER 004-007 62M-ATR-HJ36-D 62M-A-CRB-14MC 62MA-900---004 DIMENSIONS (in.) A B 673/8 373/16 008,009 62M-ATR-HJ78-D 62M-A-CRB-14MC 62MA-900---005 781/4 50 012,014 62M-ATR-HJ1012-D 62M-A-CRB-14MC 62MA-900---006 781/4 50 ROOFTOP SIZE Fig. 22 — 62MD,ME075,120 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Vertical Discharge Rooftop Unit 21 Filter door shipped with Rooftop unit. 62M ERV Unit Horizontal supply and return duct (field supplied) Rooftop unit Rooftop Unit Accessory Transition 62M075,120 ERV Unit ERV Wheel Locator pieces (included with ERV curb ERV curb, must be watertight) Optional Horizontal Economizer ROOF CURB LOCATION DETAIL B Rooftop Unit curb Locator Pieces ( included with ERV curb) Cover panel provided 30.5" A ERV NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead. 27" 2 3/4" LEGEND — Energy Recovery Ventilator ERV curb 20" ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM TRANSITION P/N ERV CURB P/N ROOFTOP ECONOMIZER 004-007 62M-ATR-HJ36-H 62M-A-CRB-14MC 62MA-900---008 DIMENSIONS (in.) A B 673/8 373/16 008,009 62M-ATR-HJ78-H 62M-A-CRB-14MC 62MA-900---009 781/4 50 012,014 62M-ATR-HJ1012-H 62M-A-CRB-14MC 62MA-900---010 781/4 50 ROOFTOP SIZE Fig. 23 — 62MD,ME075,120 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Horizontal Discharge Rooftop Unit 22 Rooftop Unit Rooftop Unit Accessory Transition (Includes front panel) 62M ERV Unit Supply Return Accessory Transition Locator pieces (included with ERV Curb ERV curb, must be watertight) ERV Wheel 62M075,120 ERV Unit ERV LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL 20" A ERV Curb 30 1/12" Curb Detail A A B 27" Supply Return 2 3/4" Rooftop Unit Curb ERV Unit Curb 20" Side View A-A Rooftop Unit Curb Locator pieces (included with ERV Curb) ROOFTOP MODEL 48/50PG 62M TRANSITION ERV CURB 03-07 62M-ATR-PG26-D 62M-A-CRB-14MC DIMENSIONS (in.) A B 805/16 4411/16 08-14 62M-ATR-PG712-D 62M-A-CRB-14MC 923/4 ROOFTOP SIZE 5315/16 Fig. 24 — 62MD,ME075,120 Coupled with Carrier 48/50PG03-14 Vertical Discharge Rooftop Unit 23 Rooftop Unit Rooftop Unit Accessory Transition (Includes front panel) 62M Unit Accessory Transition Locator pieces (included with ERV curb, must be watertight) ERV Wheel 62M075-120 ERV Unit ERV ERV Curb LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or fieldinstalled economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL 20" A ERV Curb 30 1/12" Curb Detail A B A 27" 2 3/4" Rooftop Unit Curb 20" ERV Unit Curb Side View A-A Rooftop Unit Curb Locator pieces (included with ERV Curb) ROOFTOP MODEL 48/50PG 62M TRANSITION ERV CURB 03-07 62M-ATR-PG26-H 62M-A-CRB-14MC DIMENSIONS (in.) A B 805/16 4411/16 08-14 62M-ATR-PG712-H 62M-A-CRB-14MC 923/4 ROOFTOP SIZE 5315/16 Fig. 25 — 62MD,ME075,120 Coupled with Carrier 48/50PG03-14 Horizontal Discharge Rooftop Unit 24 Filter door shipped with Rooftop unit 62M ERV Unit Rainhoods for optional economizer Rooftop unit Rooftop curb Top View Rooftop Unit Locator Pieces (included with ERV curb, must be watertight) Accessory Transition ERV Curb 62M170-285 ERV Unit RETURN ERV Wheel 30” SUPPLY Rooftop ROOF CURB LOCATION Unit curb Locator Pieces ( included with ERV curb) Cover panel provided B 49 5/8" DETAIL ERV curb A 45 1/2" 2 3/4" ERV 38" Top View ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead. TRANSITION P/N ERV CURB P/N ROOFTOP ECONOMIZER 004-007 62M-BTR-HJ36-D 62M-B-CRB-14MC 62MA-900---004 DIMENSIONS (in.) A B 673/8 373/16 008,009 62M-BTR-HJ78-D 62M-B-CRB-14MC 62MA-900---005 781/4 50 012,014 62M-BTR-HJ1012-D 62M-B-CRB-14MC 62MA-900---006 781/4 50 ROOFTOP SIZE Fig. 26 — 62MD,ME170-285 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Vertical Discharge Rooftop Unit 25 Filter door shipped with Rooftop unit. Rooftop Unit Optional Horizontal Economizer Top View Rooftop Unit Horizontal Return duct (field supplied) Accessory Transition 62M ERV Unit Locator pieces (included with ERV curb, must be watertight) ERV Curb 62M170-285 ERV Unit ERV Wheel 30" Rooftop Unit curb B ROOF CURB LOCATION DETAIL Locator Pieces ( included with ERV Curb) Cover Panel provided 49 5/8" ERV curb A 45 1/2" 2 3/4" ERV 38" Top View ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead. TRANSITION P/N ERV CURB P/N ROOFTOP ECONOMIZER 004-007 62M-BTR-HJ36-H 62M-B-CRB-14MC 62MA-900---008 DIMENSIONS (in.) A B 673/8 373/16 008,009 62M-BTR-HJ78-H 62M-B-CRB-14MC 62MA-900---009 781/4 50 012,014 62M-BTR-HJ1012-H 62M-B-CRB-14MC 62MA-900---010 781/4 50 ROOFTOP SIZE Fig. 27 — 62MD,ME170-285 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Horizontal Discharge Rooftop Unit 26 Rooftop Unit Accessory Transition 62M ERV unit ERV LEGEND — Energy Recovery Ventilator NOTES: 1. The 62M ERV unit cannot be coupled with horizontal return 48/50TJ,TM016-028 and 48/50HJ015,017 units. 2. The ERV unit can be used with a factoryinstalled economizer, if desired. Unit curb ERV curb TOP VIEW SIDE VIEW Rooftop Unit Accessory Transition 15 to 25 Ton Rooftop Unit 62M170-285 ERV Unit 62M170-285 ERV Unit ERV Wheel *Optional Economizer Transition ROOF CURB LOCATION DETAIL Rooftop Unit Curb SUPPLY 74 1/4" RETURN ERV Curb A A 45 1/2" Rooftop Unit Curb 18 11/16" 44 3/4" 49 5/8" 44 3/4" 67 1/16"* SIDE VIEW A-A TOP VIEW *Length is 891/16″ for 48/50TM028 units. ROOFTOP UNIT MODEL 48/50TJ,TM ROOFTOP SIZE 48/50HJ TRANSITION P/N ERV CURB P/N 016-028 62M-BTR-HJ1525-D 62M-B-CRB-14S 015,017 62M-BTR-HJ1525-D 62M-B-CRB-14S Fig. 28 — 62MD,ME170-285 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017 Vertical Discharge Rooftop Unit 27 ERV Unit Curb Rooftop Unit Rooftop Unit Accessory Transition (Includes front panel) 62M ERV Unit Supply Return Accessory Transition Locator pieces (included with ERV curb, must be watertight) ERV Wheel ERV Curb 62M170-285 ERV Unit ERV LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL A 38 3/4" ERV Curb 49 5/8" A Curb Detail A B 45 1/2" Supply Return Rooftop Unit Curb ERV Unit Curb Side View A-A 0" Rooftop Unit Curb 38 3/4" Locator pieces (included with ERV Curb) ROOFTOP MODEL 48/50PG 03-07 62M-BTR-PG26-D 62M-A-CRB-14MC DIMENSIONS (in.) A B 805/16 4411/16 08-14 62M-BTR-PG712-D 62M-A-CRB-14MC 923/4 ROOFTOP SIZE 62M TRANSITION ERV CURB 5315/16 Fig. 29 — 62MD,ME170-285 Coupled with Carrier 48/50PG03-14 Vertical Discharge Rooftop Unit 28 Rooftop Unit Rooftop Unit Accessory Transition (Includes front panel) 62M ERV Unit Accessory Transition Locator pieces (included with ERV curb, ERV Curb must be watertight) LEGEND ERV — Energy Recovery Ventilator ERV Wheel 62M170-285 ERV Unit NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL A 38 3/4" ERV Curb 49 5/8" A Curb Detail A B 45 1/2" Rooftop Unit Curb ERV Unit Curb Side View A-A 0" Rooftop Unit Curb 38 3/4" Locator pieces (included with ERV Curb) ROOFTOP MODEL 48/50PG 62M TRANSITION ERV CURB 03-07 62M-BTR-PG26-H 62M-B-CRB-14MC DIMENSIONS (in.) A B 805/16 4411/16 08-14 62M-BTR-PG712-H 62M-B-CRB-14MC 923/4 ROOFTOP SIZE 5315/16 Fig. 30 — 62MD,ME170-285 Coupled with Carrier 48/50PG03-14 Horizontal Discharge Rooftop Unit 29 Rooftop Unit Outside Air Hood (See Note 2) 62M ERV Unit Rooftop Unit Curb Horizontal / Return Duct (field supplied) Accessory Transition Rooftop Unit Accessory Transition ERV Curb ERV Wheel 62M170-285 ERV Unit O/A Hood LEGEND ERV — Energy Recovery Ventilator O/A — Outdoor Air NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. Transition includes a new outside air hood, which allows air intake through the front of the hood rather than the bottom. The new hood will use the filters from the original rooftop unit hood. Relief Hood Top View ROOF CURB LOCATION DETAIL Rooftop Unit Curb ERV Curb 44 3/4” A 49 5/8” A Curb Detail A B 45 1/2” Rooftop Unit Curb 44 3/4" ERV Unit Curb Side View A-A Top View 48/50PG 20-28 62M-BTR-HG1525-H 62M-B-CRB-14MC DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-BTR-HG1525-H 62M-B-CRB-14MC 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 31 — 62MD,ME170-285 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Horizontal Discharge Rooftop Unit 30 78.6 Rooftop Unit Outside Air Hood (See Note 2) 62M ERV Unit Standard HVAC Unit Roofcurb Accessory Transition Rooftop Unit ERV Curb Accessory Transition ERV O/A ERV Wheel RETURN SUPPLY 62M170-285 ERV Unit O/A Hood Top View LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. Transition includes a new outside air hood, which allows air intake through the front of the hood rather than the bottom. The new hood will use the filters from the original rooftop unit hood. Relief Hood ROOF CURB LOCATION DETAIL Rooftop Unit Curb 44 3/4” A SUPPLY B RETURN 49 5/8” A Curb Detail A 45 1/2” Rooftop Unit Curb 44 3/4" ERV Unit Curb Side View A-A ERV Curb Top View 48/50PG 20-28 62M-BTR-HG1525-D 62M-B-CRB-14MC DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-BTR-HG1525-D 62M-B-CRB-14MC 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 32 — 62MD,ME170-285 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit 31 78.6 Filter access door shipped with transition 62M ERV Unit Rooftop Unit Outside air hood for optional economizer Accessory Transition Top View Rooftop Unit ERV Curb Accessory Transition 62M330-640 ERV Unit ERV Wheel Return Supply ERV O/A O/A hood Outside air hood for optional economizer Rooftop Unit curb LEGEND — Energy Recovery Ventilator — Outdoor Air NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or fieldinstalled economizer cannot be used. Use the 62M economizer instead. Exhaust hood ROOF CURB LOCATION DETAIL ERV curb 78 1/4" A Return A Supply 55 13/32" 33 1/2" ERV Unit Curb Side View A-A 9" 50" Rooftop Unit Curb 33 1/2" 60 11/32" Top View ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM ROOFTOP SIZE 012,014 TRANSITION P/N 62M-CTR-HJ1012-D ERV CURB P/N 62M-C-CRB-14M ROOFTOP ECONOMIZER 62MA-900---006 Fig. 33 — 62MD,ME330-640 Coupled with Carrier 48/50HJ,TF,TJ,TM012,014 Vertical Discharge Rooftop Unit 32 Filter access door shipped with transition Rooftop Unit 62M ERV Unit ERV O/A R/A S/A — — — — LEGEND Energy Recovery Ventilator Outdoor Air Return Air Supply Air Horizontal supply duct (field supplied) NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead. Horizontal return (field supplied) Accessory Transition ERV Curb Top View Rooftop Unit Accessory Transitions Top View with Economizer Accessory 62M 330-640 ERV Unit Transitions 62M330-640 ERV Unit ERV Wheel 10 to 12 1/2 Ton Rooftop Unit O/A hood S/A Duct S/A R/A R/A Duct Exhaust hood Rooftop Unit curb Optional Horizontal Economizer Exhaust hood ROOF CURB LOCATION DETAIL ERV Curb 78 1/4" A 55 13/32" A Rooftop Unit Curb ERV Unit Curb 33 1/2" Side View A-A 9" 60 11/32" 50" 33 1/2" Top View ROOFTOP UNIT MODEL 48/50HJ,TF,TJ,TM Without Economizer ROOFTOP SIZE 012,014 TRANSITION P/N 62M-CTR-HJ1012-H ERV CURB P/N 62M-C-CRB-14M ROOFTOP ECONOMIZER — 48/50HJ,TF,TJ,TM With Economizer 012,014 62M-CTR-HJ1012-HEC 62M-C-CRB-14M 62MA-900---010 Fig. 34 — 62MD,ME330-640 Coupled with Carrier 48/50HJ,TF,TJ,TM012,014 Horizontal Discharge Rooftop Unit 33 Rooftop Unit ERV O/A 62M ERV Unit LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. The ERV cannot be coupled with a horizontal return 48/50TJ,TM or HJ 15 to 25 ton rooftop unit. Rooftop Unit Curb Accessory Transition Accessory Transition RETURN SUPPLY 62M330-640 ERV Unit ERV Wheel Rooftop Unit ERV curb TJ/HJ 15 to 25 Ton Rooftop Unit Accessory Transition 62M ERV Unit Optional Economizer O/A hood Exhaust hood Side View Top View Rooftop Unit Curb ROOF CURB LOCATION DETAIL ERV curb RETURN AIR SUPPLY AIR 74 1/4" A A 55 13/32" Rooftop Unit Curb 53 3/4" ERV Unit Curb Side View A-A 11 1/2" 67 1/16"* 53 3/4" 60 11/32" Top View *Length is 891/16″ for 48/50TM028 units. ROOFTOP UNIT MODEL 48/50TJ,TM 48/50HJ ROOFTOP SIZE TRANSITION P/N ERV CURB P/N 016-028 62M-BTR-HJ1525-D 62M-B-CRB-14S 015,017 62M-BTR-HJ1525-D 62M-B-CRB-14S Fig. 35 — 62MD,ME330-640 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017 Vertical Discharge Rooftop Unit 34 Rooftop Unit Rooftop 48/50PG Unit Accessory Transition (Includes front panel) 62M ERV Unit Supply Return Accessory Transition ERV Wheel ERV Curb 62M330-640 ERV Unit LEGEND ERV — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL A 38 3/4 " ERV Curb 60 11/32" Curb Detail A B Supply A 55 13/32" Return Rooftop Unit Curb Rooftop Unit Curb 38 3/4" ERV Unit Curb Side View A-A C ROOFTOP UNIT MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB 48/50PG 08-14 62M-CTR-PG712-D 62M-C-CRB-14M A 923/4 DIMENSIONS (in.) B 5315/16 C 10 Fig. 36 — 62MD,ME330-640 Coupled with Carrier 48/50PG08-14 Vertical Discharge Rooftop Unit 35 Rooftop Unit Rooftop Unit Accessory Transition (Includes front panel) 62M ERV Unit Accessory Transition ERV Wheel ERV Curb 62M330-640 ERV Unit ERV LEGEND — Energy Recovery Ventilator NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. TOP VIEW ROOF CURB LOCATION DETAIL 38 3/4" A ERV Curb 60 11/32" Curb Detail B A A 55 13/32" C Rooftop Unit Curb 38 3/4" ERV Unit Curb Side View A-A Rooftop Unit Curb ROOFTOP UNIT MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB 48/50PG 08-14 62M-CTR-PG712-H 62M-C-CRB-14M A 923/4 DIMENSIONS (in.) B 5315/16 C 10 Fig. 37 — 62MD,ME330-640 Coupled with Carrier 48/50PG08-14 Horizontal Discharge Rooftop Unit 36 Rooftop Unit Outside Air Hood (See Note 2) 62M ERV Unit Horizontal Return Duct (Field Supplied) Accessory Transition Rooftop Unit Curb Rooftop Unit Accessory Transition ERV Curb ERV Wheel 62M330-640 ERV Unit ERV O/A LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. Transition includes a new outside air hood, which allows air intake through the front of the hood rather than the bottom. The new hood will use the filters from the original rooftop unit hood. O/A Hood Relief Hood Top View ROOF CURB LOCATION DETAIL Rooftop Unit Curb 44 3/4" A 60 11/32" A B A Curb Detail 55 13/32" Rooftop Unit Curb 44 3/4" ERV Unit Curb Side View A-A ERV Curb Top View 48/50PG 20-28 62M-CTR-HG1525-H 62M-C-CRB-14M DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-CTR-HG1525-H 62M-B-CRB-14M 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 38 — 62MD,ME330-640 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Horizontal Discharge Rooftop Unit 37 78.6 Rooftop Unit Outside Air Hood (See Note 2) 62M ERV Unit Rooftop Unit Curb Accessory Transition Rooftop Unit ERV Curb Accessory Transition ERV Wheel RETURN SUPPLY 62M330-640 ERV Unit ERV O/A LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. Transition includes a new outside air hood, which allows air intake through the front of the hood rather than the bottom. The new hood will use the filters from the original rooftop unit hood. O/A Hood Top View Relief Hood ROOF CURB LOCATION DETAIL Rooftop Unit Curb 44 3/4" A 60 11/32" RE TUR N B SUPPLY Curb Detail A A Rooftop Unit Curb 55 13/32" ERV Unit Curb 44 3/4" Side View A-A ERV Curb Top View 48/50PG 20-28 62M-CTR-HG1525-D 62M-C-CRB-14M DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-CTR-HG1525-D 62M-B-CRB-14M 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 39 — 62MD,ME330-640 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit 38 78.6 TOP VIEW ERV Wheel 62M ERV Unit Return Supply Accessory Transition O/A hood Exhaust hood Rooftop Unit ROOF CURB LAYOUT 60.34" 0" Return 55.4" LEGEND — Energy Recovery Ventilator — Outdoor Air Supply ERV O/A NOTES: 1. The ERV unit can be used with a factoryinstalled economizer, if desired. 2. ERV cannot be coupled to a horizontal return rooftop unit. 58 3/4" ERV Curb Rooftop Unit Curb 77 3/4" Outside air hood SIDE VIEW Rooftop Unit 62M Unit ERV Wheel Economizer See Note 1 ERV Curb ROOFTOP UNIT MODEL 48/50A Accessory Transition ROOFTOP SIZE 020-060 TRANSITION P/N 62M-CTR-AJ2060-D Standard Rooftop Unit Curb ERV CURB P/N 62M-C-CRB-14M Fig. 40 — 62MD,ME330-640 Coupled with Carrier 48/50A020-060 Vertical Discharge Rooftop Unit 39 Rooftop Unit 62M ERV Unit Rooftop Unit Curb Accessory Transition Top View Rooftop Unit Accessory Transition ERV Wheel RETURN SUPPLY ERV Curb 62M750,950 ERV Unit O/A Hood ERV O/A Exhaust Hood LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The standard factory economizer cannot be used when coupled with 62M750,950 units. Contact factory for transition with economizer. 2. 62M750,950 units cannot be used with 48/50TJ and TM016-028 horizontal discharge rooftop units. ROOF CURB LOCATION DETAIL Rooftop Unit Curb ERV Curb RETURN AIR SUPPLY AIR 74 1/4" A A 86.25" Rooftop Unit Curb 31 9/16" ERV Unit Curb 0" Side View A-A 95.7" 31 9/16" 67.1"* Top View *Length is 891/16″ for 48/50TM028 units. ROOFTOP UNIT MODEL 48/50TJ,TM ROOFTOP SIZE 016-028 TRANSITION P/N 62M-DTR-HJ1525-D ERV CURB P/N 62M-D-CRB-14M ROOFTOP ECONOMIZER 62MA-900---007 48/50HJ 015,017 62M-DTR-HJ1525-D 62M-D-CRB-14M 62MA-900---007 Fig. 41 — 62MD,ME750,950 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017 Vertical Discharge Rooftop Unit 40 Rooftop Unit 62M ERV Unit Accessory Transition Accessory Transition 62M750,950 ERV ERV Curb ERV Wheel Rooftop Unit O/A Hood ERV O/A LEGEND — Energy Recovery Ventilator — Outdoor Air NOTE: The ERV unit can be used with a factoryinstalled economizer, if desired. Top View Relief Hood ROOF CURB LOCATION DETAIL ERV Curb Curb Detail A A B 86 1/4" A 44 3/4” Rooftop Unit Curb 44 3/4" ERV Unit Curb Side View A-A 95 3/4" Top View 48/50PG 20-28 62M-DTR-HG1525-H 62M-D-CRB-14M DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-DTR-HG1525-H 62M-D-CRB-14M 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 42 — 62MD,ME750,950 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit 41 78.6 Rooftop Unit 62M ERV Unit Rooftop Unit Curb Accessory Transition Rooftop Unit 62M750,950 ERV ERV Curb ERV Wheel RETURN SUPPLY Accessory Transition O/A Hood ERV O/A LEGEND — Energy Recovery Ventilator — Outdoor Air NOTE: The ERV unit can be used with a factory-installed economizer, if desired. Top View Relief Hood ROOF CURB LOCATION DETAIL Rooftop Unit Curb ERV Curb RETURN B SUPPLY Curb Detail A A A 44 3/4” 86 1/4" Rooftop Unit Curb 95 3/4" 44 3/4" ERV Unit Curb Side View A-A Top View 48/50PG 20-28 62M-DTR-HG1525-D 62M-D-CRB-14M DIMENSIONS (in.) A B 114.4 78.6 48/50HJ 020-028 62M-DTR-HG1525-D 62M-D-CRB-14M 114.4 ROOFTOP MODEL ROOFTOP SIZE 62M TRANSITION ERV CURB Fig. 43 — 62MD,ME750,950 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit 42 78.6 Rooftop Unit 62M ERV Unit Accessory Transition Unit curb ERV Curb 62M750,950 ERV Unit Accessory Transition Rooftop Unit ERV Wheel O/A Hood RETURN AIR SUPPLY AIR ERV O/A LEGEND — Energy Recovery Ventilator — Outdoor Air NOTES: 1. The standard factory economizer can be used in conjunction with 62M750,950 units. 2. 62M750,950 units cannot be used with horizontal discharge rooftop units. Exhaust Hood ROOF CURB LOCATION DETAIL Rooftop Unit Curb ERV Curb 0" RETURN AIR SUPPLY AIR CURB DETAIL A 86.25" A Rooftop Unit Curb 57 9/16" Side View A-A 57 9/16" (See curb detail) 77 3/4" 95.7" Top View ROOFTOP UNIT MODEL 48/50A ROOFTOP SIZE 020-060 TRANSITION P/N 62M-DTR-AJ2060-D ERV CURB P/N 62M-D-CRB-14M Fig. 44 — 62MD,ME750,950 Coupled with Carrier 48/50A020-060 Rooftop Unit 43 ERV Unit Curb Exhaust hood (outdoor units only) 2 in. pre-filters for exhaust Exhaust Blower Top View Horizontal Discharge Stand-Alone Unit Outside air hood (outdoor units only) Optional Pre-heater 2 in. pre-filters for outside air ERV Wheel Exhaust hood (outdoor units only) Top View Down Discharge Stand-Alone Unit Optional Pre-heater Outside air rainhood 2 in. pre-filters exhaust Return/exhaust opening in base Optional Pre-heater Outside air blower, mounted over supply opening in base 2 in. pre-filters outside air ERV wheel Hinged and latched access door (both sides) Supply air blower Side View Down Discharge Stand-Alone Unit Optional ERV roof curb Supply air blower Exhaust blower Outside air intake hood (outside units only) 2 in. pre-filters outside air ERV wheel Supply duct for outside air (field provided) Fig. 45 — 62M Airflow in Stand-Alone Applications 44 Step 3 — Rigging and Handling — To transfer the unit from the shipping platform to the storage or installation site, refer to the rigging label on the unit and these instructions. All panels must be secured in place prior to lifting the ERV unit in to place. Follow all local and other applicable codes when lifting, locating and mounting the ERV unit. Damage to unit may result. All panels must be in place when rigging. Unit is not designed for handling by fork truck. Damage to unit may result. Locate the ERV Unit — Prior to locating the indoor ERV unit consider the intake and exhaust duct accessibility to outside walls or roof vents. When locating the ERV unit consider required service clearances. See Table 1 for unit weights to determine if building structure reinforcements are required. Determine a Method for Mounting — The method for mounting and securing the ERV unit to the building structure must be field designed and installed. Mounting methods will vary depending upon specific jobsite conditions. NOTE: Hardware and pieces to secure ERV unit to the building structure must not interfere with the service clearances or duct requirements for the unit. Lift the ERV Unit in Place — Secure the ERV unit to the building structure following all applicable local building codes. Refer to Table 1 for ERV unit weights. Check lifting devices for capacity constraints. Hook rigging shackles through the holes or lifting eyes in the ERV unit. NOTE: Some 62M units have lifting eyes, some 62M units have holes in the ERV base rail. See Fig. 46. Connect lifting straps and spreader bars. See Fig. 46. Spreader bars must be positioned to prevent cables from rubbing against the ERV unit. Carefully lift the ERV unit and set on ERV roof curb. Do not drop the ERV unit onto the roof curb, as damage may occur. Avoid twisting or uneven lifting of the unit. Never lift the unit by the hoods or any means other than the provided lifting holes or eyes. MOUNTING THE ERV UNIT INDOORS — The ERV unit can be mounted indoors. Follow all local and other applicable building codes. Do not use the ERV duct system to support the ERV unit in any way. Follow all local and applicable building codes and manufacture and install the ductwork to the ERV unit per the duct opening connections. Equipment damage or personal injury may result. Spreader Bars RIGGING FOR ERV INSTALLATION RIGGING HOLES ERV BASE RAIL RIGGING LIFTING EYES Fig. 46 — Rigging Details 45 Table 1 — Physical Data UNIT 62M NOMINAL CAPACITY (cfm) CAPACITY RANGE (cfm) MAXIMUM SHIPPING WEIGHT (lb) Single-Wall Models Double-Wall Models MAXIMUM OPERATING WEIGHT (lb) Single-Wall Models Double-Wall Models 62MB,MC INDOOR UNIT DIMENSIONS (in.) Length* Width Height 62MD,ME OUTDOOR UNIT DIMENSIONS (in.)† Length* Width Height ROTARY ENERGY EXCHANGER Type Size (Diam. x Depth) (in.) Nominal Drive Motor Hp SUPPLY/EXHAUST AIR FAN Qty…Type Drive Type Fan Isolation Wheel Dimensions (Diam. x Width) Nominal Motor Hp FILTERS (optional) Type Exhaust Air...Qty...Size (L x W x D) (in.) Outside Air...Qty...Size (L x W x D) (in.) UNIT 62M NOMINAL CAPACITY (cfm) CAPACITY RANGE (cfm) MAXIMUM SHIPPING WEIGHT (lb) Single-Wall Models Double-Wall Models MAXIMUM OPERATING WEIGHT (lb) Single-Wall Models Double-Wall Models 62MB,MC INDOOR UNIT DIMENSIONS (in.) Length Width Height 62MD,ME OUTDOOR UNIT DIMENSIONS (in.)† Length Width Height ROTARY ENERGY EXCHANGER Type Size (Diam. x Depth) (in.) Nominal Drive Motor Hp SUPPLY/EXHAUST AIR FAN Qty…Type Drive Type Fan Isolation Wheel Dimensions (Diam. x Width) Nominal Motor Hp FILTERS (optional) Type Exhaust Air...Qty...Size (L x W x D) (in.) Outside Air...Qty...Size (L x W x D) (in.) 040 400 100-550 075 750 500-1000 120 1200 1000-1400 170 1700 1400-2000 225 2250 2000-2500 285 2850 2500-3200 255 367 440 635 462 657 850 1135 900 1185 1000 1285 235 347 400 595 422 617 790 1075 840 1125 940 1225 29.75 29.88 29.75 43.25 39.13 37.88 43.25 39.13 37.88 62.63 58.38 48.88 62.63 58.38 48.88 62.63 58.38 48.88 48.43 31.24 29.72 60.75 50.13 37.88 60.75 55.13 37.88 87.13 69.38 48.88 87.13 69.38 48.88 87.13 69.38 48.88 22.5 x 2 N/A Enthalpy Lightweight Polymer with Silica Gel Desiccant Coating 29.0 x 2 29.0 x 3 40.0 x 1.5 40.0 x 1.5 1/ 1/ N/A N/A 6 6 Direct 2….Forward Curved Centrifugal Adjustable Belt Drive Neoprene Pads 9x7 12 x 12 1 1 5.5 x 5.5 1/ 4 9x7 1/ 2 1….12 x 20 x 2 1….12 x 20 x 2 1….18 x 25 x 2 1….18 x 25 x 2 330 3300 3000-3600 430 4300 3600-5000 550 5500 5000-6000 1300 1710 1350 1760 1220 1630 40.0 x 3 1/ 6 12 x 12 2 12 x 12 2 2….20 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2 640 6400 6000-6800 750 7500 6500-8500 950 9500 8500-10,500 1440 1850 1590 2000 2650 3270 2750 3370 1270 1680 1360 1770 1510 1920 2550 3170 2650 3270 73.13 67.89 65.21 73.13 67.89 65.21 73.13 67.89 65.21 73.13 67.89 65.21 108.3 97.87 77.4 108.3 97.87 77.4 100.88 87.89 65.21 100.88 87.89 65.21 100.88 87.89 65.21 100.88 87.89 65.21 143.45 121.87 77.4 143.45 121.87 77.4 56.2 x 1.5 1/ 2 Enthalpy Lightweight Polymer with Silica Gel Desiccant Coating 56.2 x 1.5 56.2 x 3 56.2 x 3 68.0 x 3 1/ 1/ 1/ 1/ ** 2 2 2 4 68.0 x 3 1/ ** 4 15 x 15 2 15 x 15 3 2...Forward Curved Centrifugal Adjustable Belt Drive Neoprene Pads 15 x 15 15 x 15 5 71/2 18 x 18 71/2 18 x 18 10 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 2-in. Pleated — 30% Efficiency 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….20 x 24 x 2 6….20 x 24 x 2 6….20 x 24 x 2 6….20 x 24 x 2 LEGEND N/A — Not Applicable *Add 10 in. to 62M040 units equipped with a preheater. †Dimensions include outdoor air hoods. **575-v motors are 1/3 hp. 46 2-in. Pleated — 30% Efficiency 1….18 x 25 x 2 2….20 x 25 x 2 1….18 x 25 x 2 2….20 x 25 x 2 Step 4 — Installing ERV Transitions — When coupling ERV units with Carrier rooftop units an ERV transition is required to link the ERV unit and the Carrier rooftop unit together. ERV UNIT COUPLED WITH A 3 to 121/2 TON HVAC UNIT — Complete the following steps to install a transition to a 3 to 121/2 ton rooftop unit. 1. Remove the HVAC unit filter door and set aside for later use. 2. Remove the panel shipped on the HVAC unit covering the return air chamber. This panel can be discarded. 3. The 62M ERV transition for 3 to 121/2 ton rooftop units includes a replacement panel to cover the return opening. Install the replacement panel, with hood scoop attached, onto the HVAC unit, over the return air chamber. Screw in place. The return/exhaust scoop will cover part of the return air opening in the HVAC unit. NOTE: The standard transition does not seal tight around the return air opening on the HVAC unit. This allows for some air to flow back to the HVAC unit and some to be drawn back through the ERV unit. 4. Slide the transition between the ERV unit and the HVAC unit. Refer to Fig. 17-44 to orient the transition. Line up the transition so that it covers the openings in the HVAC unit and the ERV unit. The divider in the transition must separate the supply and return openings in the ERV unit. Screw the mating flanges of the transition to the ERV unit through pre-punched holes. Caulk the seams watertight. Screw the mating flanges on the other side of the transition to the new return air cover panel on the HVAC unit. Caulk seams watertight. 5. On most models the filter access door shipped with the HVAC unit will be reinstalled above the transition. 6. The transition includes a balancing damper to allow for the desired separation of the return/exhaust air between the ERV and HVAC units. This damper has a manual adjustment. During balancing, this damper will be adjusted to achieve desired exhaust cfm. The balancing damper can be accessed through a separate door in the transition or through the HVAC unit’s filter access door. See Fig. 17-44. IMPORTANT: Only trained, qualified installers and service technicians should install, wire, start-up and service equipment. POWER SUPPLY — The electrical characteristics of the available power supply must agree with the unit nameplate rating. Supply voltage must be within the limits shown. See Tables 2 and 3 for electrical and configuration data. ELECTRICAL CONNECTIONS — The ERV unit must have its own electrical disconnect box. If the disconnect option has not been ordered from the factory, it must be field supplied and installed per local codes. See Tables 2 and 3. If the ERV unit has an electric pre-heater factory installed, it will be wired through the ERV unit disconnect. NOTE: Most ERV units have electrical interlock safety switches on the access doors, which will not allow the ERV unit to operate if either of the access doors are opened. Low Voltage Wiring — Wire low voltage per diagrams. For coupled applications, there will be a brown and black wire in the exhaust chamber, which must be tied into the HVAC unit’s indoor fan so that when the indoor fan is activated, the ERV unit will be activated. 48/50TJ, HJ 3 to 121/2 Ton Rooftop Units with Economizers — The brown and black wires can be plugged into the economizer jumper plug on the HVAC unit’s economizer harness. Insert the brown wire from the ERV unit into terminal 4 in the jumper plug and insert the black wire from the ERV unit into terminal 3 in the jumper plug. See Fig. 47. If the 3 to 121/2 ton rooftop unit has an economizer installed, the economizer will have an end switch attached to the economizer actuator. The end switch must be wired into the ERV unit as shown in Fig. 48. For ERV units coupled with units with factory-installed economizers, (48/50TM, HJ 15 to 25 ton units 48/50HG, PG 15 to 25 ton units) the ERV transitions to these rooftop units include an economizer end switch. This switch mounts to the hub of the economizer damper gear as shown in Fig. 49. Set the end switch so that the ERV unit’s outside air blower is deactivated during economizer mode. For stand-alone units, the ERV unit is jumpered from terminals 6 and 8 and 7 and 9, providing for continuous operation. The ERV unit should be connected to an on-off device such as a CO2 sensor. High Voltage Wiring (Fig. 50-53) — Connect high voltage wiring to the disconnect per Fig. 50, 52 and 53. Check blower rotation direction and adjust if necessary. Step 5 — Make Electrical Connections Prior to performing service or maintenance operations on the ERV unit, turn off and disconnect all power switches to the unit. Be aware that there may be more than one disconnect switch. Electrical shock could cause serious personal injury or death. 47 Table 2 — Electrical Data Without VAV Option UNIT SIZE 62M EXHAUST AND SUPPLY MOTOR VOLTAGE (V-Ph-Hz) ERV WHEEL FLA 115-1-60 0.7 3.96 0.3 1.74† 0.7 9.8 NEC - FLA Hp 230-1-60 040 208/230-3-60 .6 460-3-60 575-3-60 115-1-60 230-1-60 075 4.9 208/230-3-60 2.2 0.5 0.3 460-3-60 1.1 575-3-60 0.9 115-1-60 0.7 230-1-60 120 16 8 208/230-3-60 4.2 1 0.3 460-3-60 2.1 575-3-60 1.7 230-1-60 8 208/230-3-60 4.2 170 ERV FLA Hp MCA MOCP NEC N/A 0.6 — — — — — — — 1 460-3-60 2.1 575-3-60 1.7 LEGEND Energy Recovery Ventilator Full Load Amps Horsepower Minimum Circuit Amps Maximum Overcurrent Protection National Electric Code Not Applicable *Fused disconnect only. †Exhaust and supply fan motors are 230-1-60. 48 POWER SUPPLY HEATER SIZE (kW) FLA MCA MOCP PRE-HEATER (Optional) FLA — 2 — 2 — 2 — 2 — 2 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 5 8 — 2 5 — 2 5 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 9.27 26.64 4.44 13.76 4.11 9.66 2.34 4.85 1.87 3.75 20.69 38.08 64.17 10.46 19.16 32.2 5.03 10.05 17.59 2.53 5.04 8.81 2.10 4.11 7.13 33.09 50.48 76.57 16.66 25.36 38.40 9.03 14.05 21.59 4.53 7.04 10.81 3.70 5.71 8.73 16.93 38.67 51.71 60.41 9.33 21.90 29.44 34.46 4.69 10.97 14.74 17.26 3.88 8.90 11.92 13.93 9.90 31.64 4.35 16.37 4.35 11.30 2.72 5.86 2.17 4.18 24.5 46.24 78.85 12.25 23.12 39.42 5.50 11.78 21.21 2.75 5.89 10.60 2.25 4.76 8.53 40.00 61.74 94.35 20.00 30.87 47.17 10.50 16.78 26.21 5.25 8.39 13.10 4.25 6.76 10.53 20.00 47.17 63.48 74.35 10.50 26.21 35.63 41.91 5.25 13.10 17.82 20.96 4.25 10.53 14.30 16.82 12.87 31.64 5.66 16.37 5.66 11.30 4.89 7.40 3.91 6.90 31.85 49.24 78.85 15.93 24.62 39.42 7.15 12.18 21.21 3.58 6.09 10.60 2.93 4.94 8.53 52.00 69.39 95.48 26.00 34.70 47.74 13.65 18.68 26.22 6.83 9.34 13.11 5.53 7.54 10.55 26.00 47.74 63.48 74.35 13.65 26.22 35.63 41.91 6.83 13.11 17.82 20.96 5.53 10.55 14.30 16.82 — 17.39 — 8.7 — 5.03 — 2.51 — 2.01 — 17.39 43.48 — 8.7 21.74 — 5.03 12.57 — 2.51 6.28 — 2.01 5.03 — 17.39 43.48 — 8.70 21.74 — 5.03 12.57 — 2.51 6.28 — 2.01 5.03 — 21.74 34.78 43.48 — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 DISCONNECT (Optional) Fuse Size* Amps Amps 30 12 40 30 5 15 5 10 30 3 5 2 4 40 30 60 45 100 70 15 30 20 60 35 6 12 20 4 6 30 10 3 5 8 60 50 80 60 200 90 30 25 40 30 60 45 30 12 30 18 40 25 6 8 12 30 5 6 10 30 25 60 45 80 60 100 70 30 12 40 25 60 35 60 40 30 6 30 12 30 18 30 20 30 5 30 10 30 12 30 15 Table 2 — Electrical Data Without VAV Option (cont) UNIT SIZE 62M VOLTAGE (V-Ph-Hz) ERV WHEEL FLA 208/230-3-60 225 460-3-60 EXHAUST AND SUPPLY MOTOR NEC - FLA Hp 6.8 0.6 575-3-60 3.4 2.7 2 208/230-3-60 285 460-3-60 6.8 0.6 575-3-60 2.7 208/230-3-60 330 460-3-60 6.8 1.2 575-3-60 460-3-60 1.2 575-3-60 4.8 3 3.9 208/230-3-60 460-3-60 2 9.6 575-3-60 550 3.4 2.7 208/230-3-60 430 3.4 15.2 1.2 7.6 5 6.1 49 HEATER SIZE (kW) FLA DISCONNECT PRE-HEATER (Optional) (Optional) Size* FLA Amps Fuse MCA MOCP Amps — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 14.53 27.10 34.64 39.66 7.29 13.57 17.34 19.86 5.88 10.90 13.92 15.93 14.53 27.10 34.64 39.66 7.29 13.57 17.34 19.86 5.88 10.90 13.92 15.93 15.13 35.24 40.26 52.83 7.62 17.67 20.18 26.46 6.05 14.09 16.10 21.13 20.73 40.84 45.86 58.43 10.42 20.47 22.98 29.26 8.45 16.49 18.50 23.53 31.93 52.04 57.06 69.63 16.02 26.07 28.58 34.86 12.85 20.89 22.90 27.93 17.00 32.71 42.13 48.41 8.50 16.35 21.07 24.21 6.75 13.03 16.80 19.32 17.00 32.71 42.13 48.41 8.50 16.35 21.07 24.21 6.75 13.03 16.80 19.32 18.50 43.63 49.91 65.62 10.00 22.57 25.71 33.56 8.25 18.30 20.82 27.10 25.50 50.63 56.91 72.62 13.50 26.07 29.21 37.06 11.25 21.30 23.82 30.10 39.50 64.63 70.91 86.62 20.50 33.07 36.21 44.06 16.75 26.80 29.32 35.60 POWER SUPPLY 22.10 34.67 42.21 48.41 11.05 17.33 21.10 24.21 8.78 13.80 16.82 19.32 22.10 34.67 42.21 48.41 11.05 17.33 21.10 24.21 8.78 13.80 16.82 19.32 23.30 43.63 49.91 65.62 12.25 22.57 25.71 33.56 9.98 18.30 20.82 27.10 32.40 52.51 57.53 72.62 16.80 26.85 29.37 37.06 13.88 21.92 23.93 30.10 50.60 70.71 75.73 88.30 25.90 35.95 38.47 44.75 21.03 29.07 31.08 36.10 — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 30 40 60 60 30 30 30 30 30 30 30 30 30 40 60 60 20 30 40 45 10 15 20 20 8 12 15 18 20 30 40 45 10 15 20 30 30 60 80 30 40 30 40 8 12 15 18 20 40 45 60 12 20 25 30 8 18 20 25 30 80 50 100 30 70 15 40 25 60 35 12 30 40 60 20 30 50 100 70 200 30 80 25 60 30 40 40 60 35 40 20 25 30 35 Table 2 — Electrical Data Without VAV Option (cont) UNIT SIZE 62M VOLTAGE (V-Ph-Hz) ERV WHEEL FLA EXHAUST AND SUPPLY MOTOR 208/230-3-60 640 460-3-60 NEC - FLA Hp 22 1.2 575-3-60 11 9 7.5 208/230-3-60 750 950 ERV FLA Hp MCA MOCP NEC N/A — — — — — — — 2.5 22 460-3-60 1.2 11 575-3-60 1.4 9 208/230-3-60 2.5 30.8 460-3-60 1.2 14 575-3-60 1.4 11 10 LEGEND Energy Recovery Ventilator Full Load Amps Horsepower Minimum Circuit Amps Maximum Overcurrent Protection National Electric Code Not Applicable *Fused disconnect only. †Exhaust and supply fan motors are 230-1-60. 50 DISCONNECT PRE-HEATER (Optional) (Optional) Size† FLA Amps Fuse MOCP Amps POWER SUPPLY HEATER SIZE (kW) FLA MCA — 8 10 15 — 8 10 15 — 8 10 15 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 45.53 65.64 70.66 83.23 22.82 32.87 35.38 41.66 18.65 26.69 28.70 33.73 46.83 71.96 84.53 97.09 23.36 35.93 42.21 48.49 19.53 29.58 34.61 39.64 64.46 92.25 106.15 120.04 29.36 41.93 48.21 54.49 23.53 33.58 38.61 43.64 56.50 81.63 87.91 103.62 29.00 41.57 44.71 52.56 24.00 34.05 36.57 42.85 58.13 89.54 105.25 120.95 29.00 44.71 52.56 60.41 24.25 36.82 43.10 49.38 80.13 114.86 132.23 149.60 36.50 52.21 60.06 67.91 29.25 41.82 48.10 54.38 72.70 92.81 97.83 110.40 36.95 47.00 49.52 55.80 30.45 38.49 40.50 45.53 74.00 99.13 111.70 124.26 36.95 49.52 55.80 62.08 30.65 40.70 45.73 50.76 102.60 130.39 144.29 158.18 46.70 59.27 65.55 71.83 37.15 47.20 52.23 57.26 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 25.13 37.70 50.26 — 12.57 18.85 25.13 — 10.05 15.08 20.11 — 27.79 41.69 55.58 — 12.57 18.85 25.13 — 10.05 15.08 20.11 100 200 60 60 80 40 60 100 200 60 80 80 40 60 200 60 80 80 100 60 80 70 90 110 35 45 50 30 35 40 45 70 90 110 35 45 50 60 30 40 45 50 100 125 N/A 45 50 60 70 35 45 50 Table 3 — Electrical Data With VAV Option UNIT SIZE 62M* VFD VOLTAGE V-Ph-Hz ERV WHEEL FLA VFD CURRENT INPUT VALUE AMP 115-1-60 0.7 9.2 230-1-60** 075 5.2 208/230-3-60 EXHAUST AND SUPPLY FAN MOTOR HEATER SIZE (kW) NEC - FLA Hp 2.2 2.8 0.5 0.3 460-3-60 1.5 1.1 575-3-60 2.1 0.9 115-1-60 120 0.7 16.6 230-1-60** 9.6 208/230-3-60 5.3 4.2 1 0.3 460-3-60 2.6 2.1 575-3-60 2.1 1.7 230-1-60** 9.6 4.2 208/230-3-60 170 5.3 0.6 460-3-60 2.6 575-3-60 2.1 208/230-3-60 225 460-3-60 575-3-60 1 8.2 0.6 2.1 1.7 6.8 4.2 3.4 3.6 2.7 2 51 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 2 5 — 5 8 — 2 5 — 2 5 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 — 5 8 10 FLA MCA DISCONNECT PRE-HEATER (Optional) (Optional) Size† FLA Amps Fuse MOCP Amps 19.75 37.14 63.23 11.05 19.74 32.79 6.26 11.28 18.82 3.24 5.76 9.53 4.41 6.42 9.43 34.55 51.94 78.03 19.80 28.49 41.54 11.26 16.28 23.82 5.53 8.05 11.82 4.41 6.42 9.43 20.10 41.84 54.88 63.57 11.56 24.12 31.66 36.69 5.70 11.98 15.75 18.26 4.58 9.61 12.62 14.63 17.39 29.95 37.49 42.52 8.82 15.11 18.88 21.39 7.66 12.68 15.70 17.71 23.00 44.74 77.35 13.02 23.89 40.19 7.03 13.31 22.74 3.65 6.79 11.50 5.13 7.64 11.41 41.50 63.24 95.85 23.96 34.83 51.13 13.28 19.56 28.99 6.51 9.65 14.36 5.13 7.64 11.41 23.96 51.13 67.44 78.31 13.28 28.99 38.41 44.70 6.51 14.36 19.08 22.22 5.13 11.41 15.18 17.69 20.57 36.28 45.70 51.99 10.42 18.27 22.98 26.12 8.97 15.26 19.03 21.54 29.90 47.29 77.35 16.93 25.62 40.19 9.14 14.17 22.74 4.74 7.25 11.50 6.67 8.68 11.69 53.95 71.34 97.43 31.15 39.84 52.88 17.27 22.29 29.83 8.46 10.98 14.75 6.67 8.68 11.69 31.15 52.88 67.44 78.31 17.27 29.83 38.41 44.70 8.46 14.75 19.08 22.22 6.67 11.69 15.18 17.69 26.74 39.31 46.85 51.99 13.54 19.82 23.59 26.12 11.66 16.69 19.71 21.72 POWER SUPPLY — 17.39 43.48 — 8.70 21.74 — 5.03 12.57 — 2.51 6.28 — 2.01 5.03 — 17.39 43.48 — 8.70 21.74 — 5.03 12.57 — 2.51 6.28 — 2.01 5.03 — 21.74 34.98 43.48 — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 40 60 100 30 60 30 80 100 200 40 60 80 30 30 40 30 40 80 80 100 30 40 60 60 30 40 60 30 40 30 25 45 70 15 25 40 8 12 20 5 6 10 6 8 10 50 70 90 30 35 50 15 20 25 8 10 12 6 8 10 30 50 60 70 15 25 35 40 8 12 17.5 20 6 10 15 17.5 25 35 45 50 12 17.5 20 25 10 15 17.5 20 Table 3 — Electrical Data With VAV Option (cont) UNIT SIZE 62M* VFD VOLTAGE V-Ph-Hz ERV WHEEL FLA 208/230-3-60 460-3-60 285 0.6 575-3-60 460-3-60 575-3-60 460-3-60 1.2 575-3-60 ERV FLA Hp MCA MOCP NEC N/A VFD — — — — — — — — 4.2 5.6 4.8 208/230-3-60 460-3-60 3.4 11.3 575-3-60 550 4.2 3.6 208/230-3-60 430 6.8 8.2 1.2 17.8 1.2 EXHAUST AND SUPPLY FAN MOTOR HEATER SIZE (kW) NEC - FLA Hp 8.2 3.6 208/230-3-60 330 VFD CURRENT INPUT VALUE AMP 9 7.6 2 2.7 6.8 3.4 2 2.7 9.6 4.8 3 3.9 15.2 7.6 5 6.1 LEGEND Energy Recovery Ventilator Full Load Amps Horsepower Minimum Circuit Amps Maximum Overcurrent Protection National Electric Code Not Applicable Variable Frequency Drive *The VAV option is not available on 62M040 units. †Fused disconnect only. **Exhaust and supply fan motors are 230-3-60. 52 — 5 8 10 — 5 8 10 — 5 8 10 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 — 8 10 15 POWER SUPPLY FLA MCA MOCP 17.39 29.95 37.49 42.52 8.82 15.11 18.88 21.39 7.66 12.68 15.70 17.71 17.99 38.09 43.12 55.69 9.15 19.20 21.71 28.00 7.83 15.87 17.88 22.91 24.03 44.14 49.16 61.73 12.07 22.12 24.63 30.91 10.29 18.33 20.34 25.37 37.16 57.26 62.29 74.85 18.73 28.78 31.30 37.58 15.83 23.87 25.88 30.91 20.57 36.28 45.70 51.99 10.42 18.27 22.98 26.12 8.97 15.26 19.03 21.54 20.57 45.70 51.99 67.70 10.42 22.98 26.12 33.98 8.97 19.03 21.54 27.82 28.13 53.26 59.54 75.25 14.06 26.63 29.77 37.62 12.05 22.10 24.61 30.90 44.53 69.66 75.95 91.65 22.40 34.96 38.10 45.96 18.97 29.02 31.54 37.82 26.74 39.31 46.85 51.99 13.54 19.82 23.59 26.12 11.66 16.69 19.71 21.72 26.74 46.85 51.99 67.70 13.54 23.59 26.12 33.98 11.66 19.71 21.72 27.82 36.56 56.67 61.69 75.25 18.28 28.33 30.85 37.62 15.66 23.71 25.72 30.90 57.89 78.00 83.02 95.59 29.11 39.17 41.68 47.96 24.66 32.70 34.71 39.74 DISCONNECT PRE-HEATER (Optional) (Optional) Size† FLA Amps Fuse Amps — 12.57 20.11 25.13 — 6.28 10.05 12.57 — 5.03 8.04 10.05 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 40 60 30 40 30 40 60 80 30 40 30 40 60 80 100 30 40 60 30 40 80 100 200 40 60 30 40 60 25 35 45 50 12 17.5 20 25 10 15 17.5 20 25 45 50 60 12 20 25 30 10 18 20 25 35 50 60 70 18 25 30 35 15 20 25 30 50 70 80 90 25 35 40 45 20 30 30 35 Table 3 — Electrical Data With VAV Option (cont) UNIT SIZE 62M* VFD VOLTAGE V-Ph-Hz ERV WHEEL FLA 208/230-3-60 460-3-60 640 1.2 575-3-60 VFD CURRENT INPUT VALUE AMP EXHAUST AND SUPPLY FAN MOTOR NEC - FLA 26 22 12.9 11 11.5 Hp 9 7.5 208/230-3-60 750 950 — — — — — — — — 26 22 460-3-60 1.2 12.9 11 575-3-60 1.4 11.5 9 208/230-3-60 2.5 34 30.8 460-3-60 1.2 16.5 14 575-3-60 ERV FLA Hp MCA MOCP NEC N/A VFD 2.5 1.4 14 10 11 LEGEND Energy Recovery Ventilator Full Load Amps Horsepower Minimum Circuit Amps Maximum Overcurrent Protection National Electric Code Not Applicable Variable Frequency Drive *The VAV option is not available on 62M040 units. †Fused disconnect only. **Exhaust and supply fan motors are 230-3-60. 53 HEATER SIZE (kW) POWER SUPPLY FLA MCA MOCP PREHEATER (Optional) FLA — 8 10 15 — 8 10 15 — 8 10 15 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 — 10 15 20 53.61 73.72 78.75 91.31 26.65 36.70 39.21 45.50 23.62 31.66 33.67 38.70 54.91 80.05 92.61 105.18 27.20 39.76 46.05 52.33 24.50 34.55 39.58 44.61 70.86 98.65 112.55 126.44 34.28 46.85 53.13 59.41 29.63 39.68 44.71 49.73 65.10 90.24 96.52 112.23 32.29 44.86 48.00 55.85 28.71 38.76 41.28 47.56 65.10 96.52 112.23 127.93 32.29 48.00 55.85 63.71 28.71 41.28 47.56 53.84 85.00 119.74 137.11 154.48 41.15 56.85 64.71 72.56 35.12 47.69 53.97 60.25 84.64 104.74 109.77 122.33 41.98 52.03 54.55 60.83 37.33 45.37 47.38 52.40 84.64 109.77 122.33 134.90 41.98 54.55 60.83 67.11 37.33 47.38 52.40 57.43 110.50 138.29 152.19 166.08 53.49 66.06 72.34 78.62 45.66 55.71 60.74 65.76 — 20.11 25.13 37.70 — 10.05 12.57 18.85 — 8.04 10.05 15.08 — 25.13 37.70 50.26 — 12.57 18.85 25.13 — 10.05 15.08 20.11 — 27.79 41.69 55.58 — 12.57 18.85 25.13 — 10.05 15.08 20.11 DISCONNECT (Optional) Amps 100 200 60 80 60 80 100 200 60 80 60 80 200 80 100 60 80 Fuse Size† Amps 80 100 100 110 40 50 50 60 35 45 45 50 80 100 110 125 40 50 60 60 35 45 50 50 110 125 N/A N/A 50 60 70 70 45 50 60 60 20 Economizer harness/plug coming from control box in HVAC unit. Actuator (Motor) Black 19 18 17 16 15 14 Important: Remove and re-install through end switch Jumper in plug leave. Economizer End switch Fig. 48 — Economizer End Switch Wiring Jumper plug shipped attached economizer plug. Brown Fig. 47 — Jumper Plug Detail 20 19 Economizer Switch 18 17 Economizer Gear hub 16 15 14 Switch Bracket Fig. 49 — Economizer Switch Wiring 54 55 See Note See Note Before performing service or maintenance operations on 62M unit, turn off power switches to unit. Multiple switches may exist. Electrical shock could cause personal injury or death. See Note See Note See Note 3PDT DPDT ERV FIOP See Note See Note — — — — See Note LEGEND Three Pole, Dual Throw Relay FLA Dual Pole, Dual Throw Relay GRD Energy Recovery Ventilator MCA Factory-Installed Option OTP See Note Fig. 50 — Typical Wiring Schematic, High Voltage NOTES: 1. Transformer for ERV wheel only used on 460-v, 575-v, 115-v ERV units. 2. On single-phase ERV units the L3 and T3 terminals on supply blower contactor and exhaust blower contactor are not used. 3. Overload thermal protection only used on 62M330-640 units with 5 hp and 71/2 hp motors. 4. Red wire not used on 115-v, 208/230-v single-phase units. 5. Wire color determined by primary voltage and transformer type used. 6. On 115-v units, L2 becomes neutral. On 208/230-v single-phase units, L3 does not exist. 7. On units with total fusing greater than 30 amps, when pre-heater is installed and fused disconnect option is selected, fusing will be separated. ERV and pre-heater will have separate fusing. 8. DPDT relay may be substituted. If so, pins 2, 5 and 8 will not exist. 9. Follow all local and other applicable codes. 10. Only qualified electrical contractors should install or service these ERV units. 11. For electrical characteristics (FLA, MCA) refer to charts in this booklet. 12. This diagram is for constant volume units. See Note See Note See Note — — — — Full Load Amps Ground Minimum Circuit Amps Overload Thermal Protection See Note 56 — — — — — NC NO PRI SEC — — — — Normally Closed Normally Open Primary Secondary See Note See Note See Note See Note (Optional) (Optional) See Note See Note See Note Before performing service or maintenance operations on 62M unit, turn off power switches to unit. Multiple switches may exist. Electrical shock could cause personal injury or death. Fig. 51 — Typical Wiring Schematic, 24-V Control Circuit NOTES: 1. Stand-Alone Application: As shown, ERV will start when power is applied. Interrupt jumpers 6/8 and 7/9 for external control. 2. Jumpers between 6 and 8, and 7 and 9, will be factory added for stand-alone units. 3. Relay throughput: 1/3 hp, 120 vac, 10 amp, 240 vac. 4. On 575-v units transformer may substitute internal breaker on secondary for fuse. 5. Door switches are optional. 6. DPDT relay may be substituted. If so, pins 2, 5 and 8 will not exist. 3PDT COM DPDT ERV MCA See Note LEGEND Three Pole, Dual Throw Relay Common Dual Pole, Dual Throw Relay Energy Recovery Ventilator Minimum Circuit Amps See Note See Note See Note 57 — — — — — — LEGEND Common Dual Pole, Dual Throw Relay Energy Recovery Ventilator Ground Normally Closed Normally Open See Note See Note Fig. 52 — Typical Wiring Schematic, High/Low Voltage with Variable Air Volume Option 4. Variable frequency drives are sensitive to the polarity of a 0 to 10 volt DC control signal. If the control source is acting properly and the voltage variance can be detected on the proper leads of the VFD, reverse the leads and the controller will respond. 5. Three-phase motor on all 62M750,950 units. 6. Color determined by primary voltage: Red — 200 vac, Orange — 230 vac, Black — 460 vac. 7. 0 to 10 volt and 4 to 20 mA inputs are polarity sensitive. Reverse leads if signal fails to update controller. 8. DPDT relay may be substituted. If so, pins 2, 5 and 8 will not exist. (OPTIONAL) See Note See Note (OPTIONAL) See Note See Note See Note See Note NOTES: 1. When the 62M unit is used in a stand-alone application, the solid-state relay will be added to activate ERV at approximately 2 volts. CO2 sensor output signal is sent to relay. Coupled units are activated through HVAC unit. 2. Supply and Exhaust Variable Frequency Drive (VFD) terminals no. 25 and no. 2 can be used as a 4 to 20 mA power control source, if desired. 3. Transformer not necessary on all 62M750,950 units. High Voltage Low Voltage WIRING LEGEND COM DPDT ERV GRD NC NO Before performing service or maintenance operations on 62M unit, turn off power switches to unit. Multiple switches may exist. Electrical shock could cause personal injury or death. See Note 58 See Note Fig. 53 — Typical Wiring Schematic, Optional Preheat High Voltage and Control Circuits DISCONNECT (FIOP) NOTES: 1. Thermostat is factory set at –5 degrees. Range is –30 to 100 F. 2. MInimum airflow is .05 in. wg. START-UP To achieve the highest level of effectiveness, the airflow across the supply and return should be equal. FACTORY SETTING — The ERV unit is factory set to achieve the maximum airflow cfm within the cabinet’s range. For example, a 62M170 unit has a range of 1,400 to 2,000 cfm airflow, and when shipped will be setup to achieve the 2,000 cfm airflow level. See Fig. 57-80. CURVE SELECTION — Refer to the fan curve for the ERV unit being used for the application. See Fig. 57-80. Knowing the outside air intake cfm required and the external static pressure on the application, select the fan curve desired. The fan curve will indicate how to set the blower motor pulley to achieve the desired cfm level. If the job requirements are the same as the maximum ERV unit setup, then no blower adjustments are required. ADJUST THE ERV BLOWER SPEED — If jobsite conditions require blower speeds other than the factory setting, then the ERV blower(s) will have to be adjusted. The fan curve will specify the number of turns to be made to the adjustable pulley on the blower motor. See Fig. 57-80. Belt Drive Motors — Check pulley alignment and belt tension prior to set up. To change the speeds of the blowers: 1. Shut off power supply and tag disconnect. 2. Loosen belt tension. 3. Loosen adjustable (movable) pulley flange set screw. See Fig. 81. 4. Screw adjustable pulley side toward the fixed side to increase speed or away from fixed side to decrease speed. Increasing speed increases load on motor. Do not exceed maximum load for motor. 5. Set adjustable pulley side at nearest keyway of pulley hub and tighten set screw. See fan curves for speed change for each turn of the adjustable pulley. Aligning Blower and Motor Pulleys — It is important that the pulleys be exactly in line with one another. See Fig. 82. 1. Loosen blower pulley set screw. 2. Align pulleys per illustration. Motor and blower shafts must be parallel. 3. Tighten pulley set screws. Adjust Belt Tension — Loosen blower motor mounting nuts. and slide motor mounting plate away from fan scroll for proper belt tension (1/2-in. deflection with 7 to 10 lb of force.) MEASURE MOTOR VOLTAGE, AMPERAGE AND FAN RPM — Measure and record the input voltage and motor amperage(s). To measure the fan rpm, the blower door will need to be opened. Minimize measurement time because the motor may over-amp with the door removed. Do not operate units with access doors/panels open as the motors will overload. With the blower door closed, compare measured amps to the motor nameplate full load amps and correct if the ERV unit is over-amping. BELT MAINTENANCE — Premature belt failures are frequently caused by improper belt tension (either too tight or too loose), or misaligned pulleys. The proper tension for operating a V-belt is the lowest tension at which the belts will not slip at peak load conditions. Check belt tension two weeks after startup and periodically thereafter. It is very important that the drive pulleys remain in proper alignment after adjustments are made. Misalignment of pulleys will result in premature belt wear, noise, vibration, and power loss. Maintain belts and motors through the provided access panels. Refer to Fig. 82. Text continued on page 74. Do not operate the ERV unit without the filters and birdscreens installed, which prevent foreign objects from entering the unit. Use the following information and the Start-Up Checklist on page CL-1 to check unit PRIOR to start-up. Unit Preparation — Check that the unit has been installed in accordance with these installation instructions and all applicable codes. Check all fasteners and set screws for tightness. This is critical for bearings and fan wheels. Also, if dampers are not motorized, check that they open and close without binding. Internal Wiring — Check all electrical connections in the control box. Tighten as required. Rain Hoods — Some ERV units will require the outside air and/or exhaust hood to be field installed. Caulk coupled flanges and screw to ERV unit. NOTE: Units for indoor applications will not have rain hoods. The outside air hood will include aluminum water entrainment filters, which should be in place prior to starting the unit. Energy Recovery Wheel DRIVE BELT — Turn the energy recovery wheel by hand to verify free operation. Inspect the belt, which drives the energy wheel rotation. Make sure the belt rides smoothly through the pulley and over the wheel rim. AIR SEALS — Check that the air seals, located around the outside of the wheel and across the center, on both sides of wheel, are secure and in good condition. Air seals which are too tight will prevent proper rotation of the energy recovery wheel. Re-check the air seals for tightness. Air seal clearance may be checked by placing a sheet of paper, like a feeler gage, against the wheel face. To adjust the air seals, loosen all eight seal retaining screws. These screws are located on the bearing support that spans the length of the cassette through the wheel center. Tighten the screws so the air seals tug slightly on the sheet of paper as the wheel is turned. Replace the access door and apply power. Observe that the wheel rotates freely. If the wheel does not rotate or is binding, remove the cassette and adjust. Blower Rotation — First, hand-rotate the blower to ensure that the wheel is not rubbing against the scroll. If the blower is rotating in the wrong direction, the ERV unit will move some air, but will not perform properly. To change the rotation, turn the power off and use the following procedure: • Single-phase units — Rewire the motor per the instructions located on the motor. • Three-phase units — Interchange any two power leads. This can be done at the motor starter. Airflow Settings and Adjustments — Most ERV units have factory-installed airflow test ports, which allow the balancer of the job to easily measure the static pressure across the ERV wheel, and thus the system airflow cfm levels. The static is measured on both the supply and return sides of the wheel. See Fig. 54-56. 59 0.8 62M040 Pressure Drop (in. wg) 0.7 62M120 0.6 62M075 0.5 0.4 0.3 0.2 200 400 600 800 Airflow 1000 1200 1400 (cfm) *Data based on measurements taken using optional airflow test ports. Fig. 54 — 62M040-120 ERV Wheel Pressure Drop* 1.2 Pressure Drop (in. wg) 1.1 62M330,430 1 62M285 62M170,225 0.9 0.8 0.7 0.6 0.5 0.4 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 Airflow (cfm) *Data based on measurements taken using optional airflow test ports. Fig. 55 — 62M170-430 ERV Wheel Pressure Drop* 60 1.2 62M550,640 62M750,950 Pressure Drop (in. wg) 1.1 1 0.9 0.8 0.7 0.6 0.5 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 Airflow (cfm) *Data based on measurements taken using optional airflow test ports. Fig. 56 — 62M550-950 ERV Wheel Pressure Drop* (cont) 61 10000 10500 11000 600 Airflow (cfm) 500 400 Supply Air High Speed Supply Air Speed Three 300 Supply Air Speed Two Supply Air Low Speed 200 100 0 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 External Static Pressure (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 57 — 62M040 Supply Air Fan Performance Curves 600 500 AIirflow (cfm) 400 Exhaust Air High Speed Exhaust Air Speed Three 300 Exhaust Air Speed Two Exhaust Air Low Speed 200 100 0 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. (in. wg) External Static Pressure NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 58 — 62M040 Exhaust Air Fan Performance Curves 62 1.60 1400 1200 Airflow (cfm) 1000 1112 rpm: 2 turns 800 1058 rpm: 3 turns 1002 rpm: 4 turns 600 942 rpm: 5 turns 400 200 0 0.1 0.3 0.5 0.7 0.9 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 59 — 62M075 Supply Air Fan Performance Curves 1200 Airflow (cfm) 1000 800 1136 rpm: 2 turns 1081 rpm: 3 turns 600 1010 rpm: 4 turns 946 rpm: 5 turns 400 200 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 60 — 62M075 Exhaust Air Fan Performance Curves 63 1575 Airflow (cfm) 1375 1175 1448 rpm: 2 turns 1315 rpm: 3 turns 975 1277 rpm: 4 turns 1194 rpm: 5 turns 775 575 375 0.2 0.4 0.6 0.8 1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 61 — 62M120 Supply Air Fan Performance Curves 1475 Airflow (cfm) 1275 1075 1399 rpm: 2 turns 1332 rpm: 3 turns 875 1244 rpm: 4 turns 1162 rpm: 5 turns 675 475 275 0.2 0.4 0.6 0.8 1.0 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 62 — 62M120 Exhaust Air Fan Performance Curves 64 2800 2600 Airflow (cfm) 2400 2200 1121 rpm: 3 turns 2000 1074 rpm: 4 turns 1017 rpm: 5 turns 1800 937 rpm: 6 turns 1600 1400 1200 1000 0.2 0.4 0.6 0.8 1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 63 — 62M170 Supply Air Fan Performance Curves 2600 Airflow (cfm) 2400 2200 1068 rpm: 3 turns 2000 1045 rpm: 4 turns 1800 1018 rpm: 5 turns 977 rpm: 6 turns 1600 1400 1200 1000 0.2 0.4 0.6 0.8 1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 64 — 62M170 Exhaust Air Fan Performance Curves 65 Airflow (cfm) 3000 2500 1159 rpm: 3 turns 1114 rpm: 4 turns 2000 1054 rpm: 5 turns 1500 1000 0.2 0.4 0.6 0.8 1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 65 — 62M225 Supply Air Fan Performance Curves Airflow (cfm) 3000 2500 1077 rpm: 3 turns 1052 rpm: 4 turns 1024 rpm: 5 turns 2000 964 rpm: 6 turns 1500 1000 0.2 0.4 0.6 0.8 1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 66 — 62M225 Exhaust Air Fan Performance Curves 66 3500 Airflow (cfm) 3000 1186 rpm: 2 turns 2500 1109 rpm: 3 turns 1057 rpm: 4 turns 1010 rpm: 5 turns 2000 1500 1000 0.1 0.3 0.5 0.7 0.9 1.1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 67 — 62M285 Supply Air Fan Performance Curves 3500 Airflow (cfm) 3000 2500 1193 rpm: 2 turns 1147 rpm: 3 turns 1097 rpm: 4 turns 1062 rpm: 5 turns 2000 1500 1000 0.1 0.3 0.5 0.7 0.9 1.1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 68 — 62M285 Exhaust Air Fan Performance Curves 67 4500 Airflow (cfm) 4000 3500 833 rpm: 2 turns 803 rpm: 3 turns 763 rpm: 4 turns 3000 2500 2000 0.10 0.20 0.30 0.40 0.50 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 69 — 62M330 Supply Air Fan Performance Curves 4000 3800 Airflow (cfm) 3600 3400 3200 842 rpm: 2 turns 3000 808 rpm: 3 turns 2800 770 rpm: 4 turns 2600 2400 2200 2000 0.13 0.20 0.30 0.40 External Static (in. wg) 0.50 NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 70 — 62M330 Exhaust Air Fan Performance Curves 68 5500 5000 Airflow (cfm) 4500 962 rpm: 3 turns 942 rpm: 4 turns 4000 891 rpm: 5 turns 3500 3000 2500 0. 20 0. 40 0. 60 0. 80 1. 00 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 71 — 62M430 Supply Air Fan Performance Curves 5500 5000 Airflow (cfm) 4500 871 rpm: 4 turns 4000 891 rpm: 5 turns 3500 3000 2500 0. 20 0. 40 0. 60 0. 80 1. 00 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 72 — 62M430 Exhaust Air Fan Performance Curves 69 6500 6000 1109 rpm: 2 turns Airflow (cfm) 5500 1068 rpm: 3 turns 5000 1014 rpm: 4 turns 4500 968 rpm: 5 turns 4000 3500 3000 2500 2000 0.2 0.4 0.6 0.8 1.0 1.2 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 73 — 62M550 Supply Air Fan Performance Curves 6 500 6 000 Airflow (cfm) 5 500 5 000 1109 rpm: 2 turns 4 500 1049 rpm: 3 turns 998 rpm: 4 turns 4 000 947 rpm: 5 turns 3 500 3 000 2 500 2 000 0 .3 0 .4 0 .6 0 .8 1 .0 1 .2 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 74 — 62M550 Exhaust Air Fan Performance Curves 70 7500 Airflow (cfm) 7000 6500 1256 rpm: 2 turns 1174 rpm: 3 turns 1150 rpm: 4 turns 6000 5500 5000 0.25 0.45 0.65 0.85 1.00 1.20 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 75 — 62M640 Supply Air Fan Performance Curves 8000 Airflow (cfm) 7500 7000 1202 rpm : 0 turns 1152 rpm: 1 turn 6500 1123 rpm: 2 turns 1096 rpm: 3 turns 6000 5500 5000 0.4 0.5 0.6 0.7 0.9 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 76 — 62M640 Exhaust Air Fan Performance Curves 71 9500 Airflow (cfm) 9000 8500 906 rpm: 0 turns 8000 870 rpm: 1 turns 847 rpm: 2 turns 7500 821 rpm: 3 turns 7000 807 rpm: 4 turns 6500 6000 5500 0.10 0.30 0.50 0.70 0.90 1.10 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 77 — 62M750 Supply Air Fan Performance Curves 9000 Airflow (cfm) 8500 8000 923 rpm : 0 turns 7500 898 rpm: 1 turn 862 rpm: 2 turns 7000 844 rpm: 3 turns 6500 813 rpm: 4 turns 6000 5500 0.3 0.5 0.7 0.9 1.1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 78 — 62M750 Exhaust Air Fan Performance Curves 72 11500 11000 Airflow (cfm) 10500 10000 9500 966 rpm: 3 turns 9000 896 rpm: 4 turns 8500 831 rpm: 5 turns 8000 7500 7000 6500 0.10 0.30 0.50 0.70 0.90 1.10 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 79 — 62M950 Supply Air Fan Performance Curves 11000 Airflow (cfm) 10500 10000 9500 1024 rpm: 3 turns 9000 962 rpm: 4 turns 929 rpm: 5 turns 8500 8000 7500 7000 0.3 0.5 0.7 0.9 1.1 External Static (in. wg) NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters. Fig. 80 — 62M950 Exhaust Air Fan Performance Curves 73 Occupied Mode, with CO2 Sensor — When the CO2 sensor is used, it will measure the space CO2 levels in parts per million (ppm). The 62M ERV CO2 setting is factory set at 1,000 ppm but can be adjusted from 0 ppm to 2,000 ppm. When either the scheduling program and/or the CO2 sensor calls for ERV operation, the ERV will activate the following: • ERV wheel • Outdoor air blower motor • EXH blower motor • Two-position damper opens NOTE: The two-position damper option may slightly delay activation of the ERV blower motor. Occupied Mode, with Frost Protection — In the occupied mode, the frost protection option will eliminate frost build-up on the ERV wheel using exhaust air. It is activated via a pressure differential across the ERV wheel. This set point is field set from 0.2 in. wg to 2.0 in. wg and must be set to 150% of the normal static pressure across the wheel. The frost protection feature is automatically locked out above 35 F. NOTE: If the outdoor-air temperature is below 35 F, a dirty wheel may incorrectly activate the frost control feature if the differential pressure across the wheel exceeds the set point. When the frost protection option is activated the following will occur: • ERV wheel turns on. • Outdoor air blower motor turns off. • EXH blower motor is on. Occupied Mode, with the Pre-Heat Option — In the occupied mode, the pre-heat option provides frost protection for the ERV wheel and slightly warms the outdoor air. This feature is factory set to activate at –5 F, and can be field adjusted from –30 F to 100 F. It is recommended that this set point be set at the frost threshold for the region in which it is used. If desired, this feature may also be activated via a field supplied pressure differential switch to determine if frost build up has occurred on the ERV wheel. Occupied Mode, with the Economizer Accessory — When using the economizer option, this allows for up to 100% outside air to be brought in for free cooling. During free cooling, the rooftop unit mechanical cooling may or may not be operating depending on the set points used with the rooftop unit. When using the economizer accessory, it is recommended that the minimum position be set to the closed position and the ERV should be set such that it is locked out when the economizer opens far enough to bring in the same level of outdoor air as the ERV. If desired, this feature may also be activated via a field-supplied pressure differential switch to determine if frost build- up has occurred on the ERV wheel. During free cooling, the following occurs: • ERV wheel is turned off. • Outdoor air blower is turned off. • EXH blower motor turns on. • Two-position outdoor-air damper is closed (if used). • Two-position EXH damper is opened (if used). • Stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation. This feature is factory set to activate every 10 minutes, for 20 seconds of operation. Both settings can be adjusted from 0 to 10 minutes. Wheel Bypass Option — When using the wheel bypass option (with the stop/jog option), this allows free cooling through the wheel limited by the ERV airflow cfm limits. With this option the unit can be in free cooling or not depending on the temperature of the outdoor-air compared to the set point. When not in free cooling, the ERV will not operate. When in free cooling: • ERV wheel is turned off. • Outdoor-air blower is turned on. Fig. 81 — Blower Motor Pulley Adjustment Fig. 82 — Belt Alignment Variable Air Volume Option — This option can be used in conjunction with the CO2 sensor option (ordered separately). Outside air and exhaust air blower speeds are independently controlled by variable frequency drives and modulated based upon space occupancy, which can be measured by CO2. The more people in the space the greater the CO2 levels, the more outside air is introduced. This option eliminates over ventilating the space in less than full conditions. The ERV unit has completely different electrical characteristics when used with a variable air volume option. Refer to Tables 2 and 3. Operating Sequence OCCUPIED MODE — While in occupied mode, the 62M ERV will operate per the ERV Timer option (scheduling program), the CO2 sensor input, a combination of the scheduling option and CO2 input, or the economizer accessory. Additionally, the low temperature lockout (LTLO) function locks out the 62M ERV if the outdoor-air temperature entering the wheel is below the set point. The LTLO is factory set at –10 F, and can be field adjusted from –30 F to 100 F. 74 • • • EXH blower motor is turned on. The two-position damper is open (if used). The stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation. This feature is factory set to activate every 10 minutes, for 20 seconds of operation. Both settings can be adjusted from 0 to 10 minutes. UNOCCUPIED MODE — While in unoccupied mode, when below the low temperature lockout set point, the ERV wheel is off, and only the two-position damper option is opened to allow free cooling when desired. The dampers are controlled by either the ERV Timer option (scheduling program) or the CO2 sensor input. Additionally, the frost protection and preheat options are also off. The low temperature lockout (LTLO) function locks out the 62M ERV if the outdoor-air temperature entering the wheel is below the set point. The LTLO is factory set at –10 F, and can be field adjusted from –30 F to 100 F. When above the low temperature lockout set point and cooling is desired the economizer or wheel bypass option is also used. Depending on the option used with the 62M ERV, several sequences of operation could occur. Unoccupied Mode, with the Economizer Accessory — When using the economizer option, this allows for up to 100% outside air to be brought in for free cooling. During free cooling, no mechanical cooling is operating and the following occurs: • ERV wheel is turned off. • Outdoor air blower motor is off. • EXH blower motor is off. • Two-position OA damper option is closed (if used). • Two-position EXH damper is open (if used). • The stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation. When using the economizer option and mechanical cooling is operating, the economizer should be closed or at the minimum position. Unoccupied Mode, with the Wheel Bypass Option — When using the wheel bypass option (with the stop/jog option), this allows free cooling through the wheel limited by the ERV cfm limits. With this option the unit can be in free cooling or not depending on the temperature of the OA compared to the set point. When in free cooling: • ERV wheel is turned off. • Outdoor air blower is on. • EXH blower motor is on. • Two-position damper is open (if used). When not in free cooling: • ERV wheel is turned off. • Outdoor air blower motor is turned off. • EXH blower motor is turned off. • Two-position damper is closed (if used). To install the segments see the Installing Wheel Segments (62M075-950) section. Removing and Installing Non-Segmented Wheel for Cleaning (62M040 Units) — Non-segmented energy transfer wheels are secured to the shaft and bearing support beam by a Phillips head screw and hub cover. See Fig. 84. To remove the energy transfer wheel, follow Steps 1-4 below. (See Fig. 84.) Reverse procedure for wheel installation. 1. Remove front seal assembly (pulley side of cassette) if present. 2. Remove belt from pulley and position temporarily around wheel rim. 3. Remove the hub cover from the wheel. Note the wheel to shaft alignment pin under the hub cover. Ensure this pin engages the notch at the end of the shaft when reinstalling the wheel. 4. Pull the wheel straight off the shaft. Handle wheel with care to prevent distorting of the wheel. Fig. 83 — Unlocking the Segment Retaining Brackets Alignment Pin Cassette Housing/Frame SERVICE Shaft Disconnect electrical power before servicing energy recovery cassette. Removing Wheel Segments for Cleaning (62M170-950 Units) Bearings (2) 1. Unlock and open the segment retaining brackets on both sides of the selected segment opening. Refer to Fig. 83. 2. Gently lift segment outward. 3. Close segment retaining latches and rotate wheel 180 degrees to remove next segment. Follow this pattern to remove all segments. This pattern will help keep wheel balanced. Hub Cover Wheel & Hub Fig. 84 — 62M040 Energy Transfer Wheel Assembly 75 Removing and Installing Non-Segmented Wheel for Cleaning (62M075, 120 Units) — Non-segmented energy transfer wheels include the shaft and are secured to two wheel support beams by two flange bearings with locking collars. See Fig. 85. To remove the energy transfer wheel follow Steps 1-4 below. Reverse procedure for wheel installation. 1. Pull the wheel with shaft straight out of the motor side wheel support beam and bearing. Handle wheel with care to prevent distorting of the wheel. 2. Remove the pulley side wheel support beam with bearing by removing the 4 support beam screws. 3. Remove the belt from the pulley and position temporarily around the wheel rim. 4. Loosen the two set screws on each of the two wheel bearings. See Fig. 85. WHEEL, HUB & SHAFT FLANGE BEARINGS (2) SET SCREWS (2) EACH When replacing wheel, retighten the 4 bearing set screws. Premature bearing failure could result. Installing Units) Wheel Segments WHEEL SUPPORT BEAMS Fig. 85 — 62M075,120 Energy Transfer Wheel Assembly (62M170-950 Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury. HAMMER USED AS “STOP” NOTE: Both installation and removal procedures must be performed from the pulley side of the cassette. Weight of the installed segment will cause the wheel to accelerate in rotation. Failure to maintain control of the wheel rotation while installing all segments could cause severe injury to fingers or hand caught between revolving spokes and the bearing support beam. Handle of hammer, or other stop, should be inserted through spokes and above or below bearing support beams to limit rotation of unbalanced wheel. See Fig. 86. Fig. 86 — Using a Stop on the Wheel NOTE: The 62M040-120 units contain non-segmented wheels which must be completely removed to be cleaned. 1. Begin by positioning one segment opening at the top of the cassette. Unlock and open the segment retaining brackets on both sides of the selected segment opening. 2. Holding the segment as vertical as possible and centered between spokes, insert nose of segment downward between the hub plates. See Fig. 87. NOTE: The face of the segment, with the imbedded stiffener (vertical support between nose and rim end of segment) must face the motor side of the cassette. See Fig. 88. 3. Ease the segment downward until its outer rim clears the inside of the wheel rim. Then press the segment inward against the spoke flanges. 4. Close and latch segment retaining brackets to the position shown in Fig. 89. Make certain the retaining bracket is fully engaged under the catch. 5. Slowly rotate, by hand, the first installed segment to the bottom of the cassette, then install the second segment opposite the first. Repeat this sequence with the two installed segments rotated to the horizontal position to balance the weight of installed segments. Continue this sequence with the remaining segments. Fig. 87 — Inserting a Segment of the Wheel 76 2. Using hexagonal wrench, loosen setscrew in bearing locking collar. Using light hammer and drift (in drift pin hole) tap collar in the direction of wheel rotation to unlock collar. Remove collar. 3. Using socket wrench with extension, remove two nuts which secure bearing housing to the bearing support beam. Slide bearing from shaft. NOTE: Slight hand pressure against wheel rim will lift weight of wheel from inner race of bearing to assist bearing removal and installation. If not removable by hand, use bearing puller. Imbedded Stiffeners Fig. 88 — Motor Side View of Segment Protect hands and belt from possible sharp edges of hole in bearing support beam. CATCH 4. Using a wrench, remove diameter seal retaining screws or hub seal retaining screws. Remove diameter seals or hub seal from bearing beam. See Fig. 91. 5. Form a small loop of belt and pass it through the hole in the bearing support beam. Grasp the belt at the wheel hub and pull the entire belt down. Loop the trailing end of the belt over the shaft (Fig. 91 shows belt partially through the opening). 6. Reinstall the bearing onto the wheel shaft, being careful to engage the two locating pins into the holes in the bearing support beam. Secure the bearing with two self-locking nuts. 7. Install the belts around the wheel and pulley according to the instructions provided with the belt. 8. Reinstall diameter seals or hub seal and tighten retaining screws. Rotate wheel in clockwise direction to determine that wheel rotates freely with slight drag on seals. 9. Reinstall bearing locking collar. Rotate collar by hand in the direction the wheel rotates (see label provided on each cassette for wheel rotation). Lock in position by tapping drift pin hole with hammer and drift. Secure in position by tightening setscrew. 10. Reinstall bearing access cover. 11. Apply power to wheel and ensure that the wheel rotates freely without interference. ALTERNATE BELT REPLACEMENT METHODS — Alternate belt replacement methods may be used in some applications depending upon accessibility of the cassette. Consult instructions provided with the belt for further information. PULL TAB Fig. 89— Latch Segment Retaining Brackets Wheel Drive Motor and Pulley Replacement (62M170-095 Units) 1. Disconnect power to wheel drive motor. 2. Remove belt from pulley and position temporarily around wheel rim. 3. Loosen setscrew in wheel drive pulley using Allen wrench and remove pulley from motor drive shaft. 4. While supporting weight of drive motor in one hand, loosen and remove 4 mounting bolts. 5. Install replacement motor with hardware kit supplied. 6. Install pulley to dimension shown in Fig. 90 and secure setscrew to drive shaft. 7. Stretch belt over pulley and engage in groove. Belt Replacement 1. Obtain access to the pulley side bearing access plate. Remove two bearing access plate retaining screws and the access plate. Insulation Seal Plate 62M UNIT SIZE 170 225 285 330 430 550 640 750 950 ERV WHEEL DIMENSION A WHEEL SERIES (in.) ERC-3623 36 ERC-3623 36 ERC-3628 36 1/ ERC-5245 52 4 ERC-5245 52 ERC-5262 52 ERC-5262 52 ERC-6488 64 7/ 16 ERC-6488 64 Dimension A Wheel Drive Motor Pulley NOTE: The ERV wheel model number contains the wheel series number, and is located on a label near the drive pulley. For example, ERC-5245D is a 52 series wheel. Fig. 90 — Pulley Location 77 Belt (Shown in Place) Locking Collar Locking Nut (2) Bearing Access Plate Bearing Support Beam Wheel Rim Wheel Bearing Housing Hub (2) Taper - Lock Hub Collar (2) Retaining Screws Set Screw Shaft Drift Hole Locating Pin PULL FEED Belt Pulley Side Motor Side Fig. 91 — Belt Replacement (Diameter Seals Removed) MAINTENANCE To clean, gain access to the energy recovery wheel and remove wheel. Brush foreign material from the face of the wheel. Wash the wheel in a 5% solution of non-acid based coil cleaner or alkaline detergent and warm water. Soak in the solution until grease and tar deposits are loosened. NOTE: Some staining of the desiccant may remain and is not harmful to performance. Before removing, rapidly run finger across surface of wheel to separate polymer strips for better cleaning action. Rinse dirty solution from wheel and remove excess water before reinstalling. Routine maintenance of the energy recovery cassettes includes periodic cleaning of the energy recovery wheel as well as inspection of the air seals and wheel drive components as follows: Cleaning — The need for periodic cleaning of the energy recovery wheel will be a function of operating schedule, climate and contaminants in the indoor air being exhausted, and the outdoor air being supplied to the building. The air exchange wheel is “self-cleaning” with respect to dry particles due to its laminar flow characteristics. Smaller particles pass through; larger particles land on the surface and are blown clear as the flow direction is reversed. Any material that builds up on the face of the wheel can be removed with a brush or vacuum. The primary need for cleaning is to remove oil-based aerosols that have condensed on energy transfer surfaces. A characteristic of all dry desiccants, such films can close off micron sized pores at the surface of the desiccant material, reducing the efficiency by which the desiccant can adsorb and desorb moisture and also build up so as to reduce airflow. In a reasonably clean indoor environment such as a school or office building, measurable reductions of airflow or loss of sensible effectiveness may not occur for several years. Measurable changes in latent energy transfer can occur in shorter periods of time in applications such as moderate occupant smoking or cooking facilities. In applications experiencing unusually high levels of occupant smoking or oil-based aerosols such as industrial applications involving the ventilation of machine shop areas for example, annual washing of energy transfer may be necessary to maintain latent transfer efficiency. Proper cleaning of the energy recovery wheel will restore latent effectiveness to near original performance. Do not use acid based cleaners, aromatic solvents, steam or temperatures in excess of 170 F; damage to the wheel may result. Air Seals — Diameter seals are provided on each cassette to minimize transfer of air between the counter flowing airstreams. To adjust diameter seals, loosen diameter seal adjusting screws and back seals away from wheel surface (Fig. 92). Rotate wheel clockwise until two opposing spokes are hidden behind the bearing support beam. Using a folded piece of paper as a feeler gage, position paper between the wheel surface and diameter seals. Adjust seals towards wheel surface until a slight friction on the feeler gage (paper) is detected when gage is moved along the length of the spoke. Retighten adjusting screws and recheck clearance with “feeler” gage. 78 Wheel Drive Components — The wheel drive motor bearings are pre-lubricated and no further lubrication is necessary. Make certain air cooling ports are not blocked. The wheel drive a pulley is secured to the drive motor shaft by a setscrew. The setscrew is secured with removable adhesive to prevent loosening. Annually confirm setscrew is secure. The wheel drive belt is a urethane stretch belt designed to provide constant tension through the life of the belt. No adjustment is required. Inspect the drive belt annually for proper tracking and tension. A properly tensioned belt will turn the wheel immediately after power is applied with no visible slippage during start-up. Rotation To Adjust Adjusting Screws Feeler Gage Fig. 92 — Diameter Seal Adjustment 79 Copyright 2006 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Catalog No. 536-220 Printed in U.S.A. Form 62M-1SI Pg 80 1-06 Replaces: New Tab 10a 12a START-UP CHECKLIST A. Project Information: Start-Up Performed By ____________________________ Name __________________________________________________ Job Name ______________________________________________ ERV Unit Designation ____________________________________ Phone Number __________________________________________ Design Information Application CFM External Static Pressure Supply Discharge Return Discharge Voltage/Phase ERV Unit Part Number Specify Rooftop Unit. Model Number HVAC Unit Discharge Type Roof Curb (Option) 14-in. Tall Roof Curb Vibration Isolation Curb Transition (Option) Rooftop Unit Discharge Percent Outside Air Transition Part Number Inside Mounting Kit (Option) Coupled to rooftop unit or stand-alone. Down or horizontal (use horizontal for mated application) Down or horizontal (use horizontal for mated application) NOTE: Complete This Section for Coupled Applications Only Down discharge or horizontal discharge. Yes No Field install Field install NOTE: Complete This Section for Coupled Applications Only. Down or horizontal discharge rooftop unit. Outside air thru ERV unit as a percent of total rooftop unit cfm. Field install Yes No Factory installed Electrical Disconnect (Option) Fused Switched Two-Position Motorized Dampers (Option) Outside Air Damper Exhaust Air Damper Economizer (Accessory for Rooftop Unit) Yes No Factory installed Factory installed Yes No Factory installed Factory installed Yes No Field install Wheel Bypass With Stop Jog Control (Option) Yes No Stop Jog Control (Option) Yes No Pre-Heater (Option) kW Temp Control Temp and Static Pressure Control Frost Protection (Option) Yes No Factory installed Factory installed Yes No Yes No Filter Maintenance Indicator (Option) Yes No ERV Blower Maintenance Indicator (Option) Yes No ERV Wheel Maintenance Indicator (Option) Yes No Airflow Monitor (Option) Yes No ERV Control Timer (Option) 24 Volt Mounted in ERV 115 Volt Remote Mount VAV Control (Option) Yes No Book Tab NOTE: Do Not Use With Wheel Bypass Option. Special economizers required for some rooftop units. See the price pages. NOTE: Do Not Use With Economizer Option. Stops the ERV wheel rotation for free-cooling. NOTE: Use With Economizer Option. Jogs the wheel during economizer mode to expel contaminants. Factory installed Low Temperature Lock Out (Option) CO2 Sensor (Option) Wall Mount or Duct Mount Duct Mount With External View For 62M040 Cabinet Only Equipment Support Base Rail Option Hinged Door Option 2-in. Filters Option Door Interlock Safety Switches Test Port Option NOTE: Complete This Section for Indoor Applications Only. Removes rainhoods and adds duct flanges. Yes No Yes No Factory installed NOTE: Do Not Use With Pre-Heater. Defrosts wheel with exhaust air, by shutting down OA blower. Factory installed Shut down ERV unit at low temperature set point. Factory installed Senses static pressure across OA filters (can be set for return filters). Factory installed Monitors OA and EA blowers and sends signal on electrical spike. Factory installed Monitors ERV wheel and sends signal on electrical spike. Factory installed Gages display static pressure across wheel for OA and exhaust air. Factory installed Field install 24 hour / 7 day timer mounted in ERV unit. 24 hour / 7 day timer field mounted in remote location. Factory installed Provides independent VFD control for both OA and exhaust air. Field install Field install Yes No Field installed Factory installed Factory installed Factory installed Factory installed Factory installed Use for coupled applications. Must be ordered when 62M040 sits on a roof curb. Provides hinges and latches on both access doors. Replaces the standard 1-in. filters with 2-in. high efficiency, pleated. Cuts power to ERV unit when access doors are opened during operation. Allows for convenient monitoring of static / airflow across ERV wheel. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. 1 4 Catalog No. 536-220 Printed in U.S.A. Form 62M-1SI Pg CL-1 1-06 Replaces: New 1a 12a
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