Carrier 62ME, 62MC, 62MD, 62MB specifications Installing Wheel Segments 62M170-950 Units

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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.

FLANGE BEARINGS

(2)

WHEEL,

HUB &

SHAFT

SET SCREWS

(2) EACH

When replacing wheel, retighten the 4 bearing set screws. Premature bearing failure could result.

Installing Wheel Segments (62M170-950 Units)

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

NOTE: Both installation and removal procedures must be per- formed 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 unbal- anced wheel. See Fig. 86.

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 down- ward 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.

WHEEL SUPPORT BEAMS

Fig. 85 — 62M075,120 Energy

Transfer Wheel Assembly

HAMMER USED AS “STOP”

Fig. 86 — Using a Stop on the Wheel

Fig. 87 — Inserting a Segment of the Wheel

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Contents Installation, Start-Up Service Instructions Assembling the Roof Curb All dimensions are in inches Roof curb shipped unassembled Roof Curb 62M040 for Stand-Alone ApplicationsDimensions Dimensions 075,120Duct Sizes 170-285†62M-B-CRB-14MC 49.63 45.5 Dimensions 075,120 62M-A-CRB-14MC 30.5Field provided Required Service Clearances Front Rear Left Right62MD,ME040 Outdoor Unit Dimensions Front 27.5 Rear Left Right62MB,MC075,120 Indoor Unit Dimensions 39 in. service clearance required for ERV wheel removal62MD,ME075,120 Outdoor Unit Dimensions 55 in. service clearance required for ERV wheel removal View A-A62MD,ME170-285 Outdoor Unit Dimensions Required Service Clearances View A-A 62 in. service clearance required for ERV wheel removal62MD,ME330-640 Outdoor Unit Dimensions Front 72 in. service clearance required for ERV wheel removalRear Left 62MD,ME750,950 Outdoor Unit Dimensions Rooftop Unit CurbTop View 004-007Roof Curb Location Detail Unit Curb Support48/50PG 03-07 ReturnERV TOP View 67 3/848/50HJ,TF,TJ,TM Cannot be used. Use the 62M economizer instead 008,009 62M-ATR-HJ78-H 62M-A-CRB-14MCRooftop Unit Curb Supply Return48/50PG Unit Curb Rooftop Unit Curb Side View A-A62M-ATR-PG26-H 62M-ATR-PG712-H008,009 62M-BTR-HJ78-D 62M-B-CRB-14MC 62M-BTR-HJ36-D 62M-B-CRB-14MC78 1 012,014 62M-BTR-HJ1012-D 62M-B-CRB-14MC 62M-BTR-HJ78-H 62M-B-CRB-14MC 62M-BTR-HJ36-H 62M-B-CRB-14MC62M-BTR-HJ1012-H 62M-B-CRB-14MC Length is 891/16″ for 48/50TM028 units 62M-BTR-HJ1525-D 62M-B-CRB-14S48/50HJ 015,017 62M-BTR-HJ1525-D 62M-B-CRB-14S62M-BTR-PG26-D 62M-A-CRB-14MC 62M-BTR-PG712-D 62M-A-CRB-14MCRooftop Unit Curb 38 3/4 49 5/8 ERV Curb Curb DetailUnit 38 3/4 Curb 62M-BTR-PG26-H 62M-B-CRB-14MC 80 5 44 1120-28 62M-BTR-HG1525-H 62M-B-CRB-14MC 114.4 78.6 020-028 62M-BTR-HG1525-H 62M-B-CRB-14MC 114.4 78.648/50PG 20-28 62M-BTR-HG1525-D 62M-B-CRB-14MC 114.4 48/50HJ 020-028 62M-BTR-HG1525-D 62M-B-CRB-14MC 114.4Supply 012,014 62M-CTR-HJ1012-D 62M-C-CRB-14M62M-CTR-HJ1012-H 62M-C-CRB-14M 62M-CTR-HJ1012-HEC 62M-C-CRB-14MRooftop Unit Accessory Transition Rooftop Unit Accessory 62M ERV Unit 62M330-640Optional Economizer Hood Exhaust hood 74 1/448/50PG 08-14 62M-CTR-PG712-D 62M-C-CRB-14M 923/4 5315/16 62M ERV Unit ERV Curb ERV Energy Recovery Ventilator 60 11/32 ERV Curb48/50PG 20-28 62M-CTR-HG1525-H 62M-C-CRB-14M 114.4 48/50HJ 020-028 62M-CTR-HG1525-H 62M-B-CRB-14M 114.4Hood rather than the bottom. The new Hood will use the filters from the original48/50PG 20-28 62M-CTR-HG1525-D 62M-C-CRB-14M 114.4 48/50HJ 020-028 62M-CTR-HG1525-D 62M-B-CRB-14M 114.458 3/4 ERV Curb Rooftop Unit Curb 77 3/4 Outside air Hood 62M Unit ERV Wheel ERV CurbRooftop Unit Economizer See Note Standard Rooftop Unit Curb 48/50A 020-060 62M-CTR-AJ2060-D 62M-C-CRB-14MUsed when coupled with 62M750,950 units 62M ERV Unit RooftopERV Wheel Hood Standard factory economizer cannot be48/50PG 20-28 62M-DTR-HG1525-H 62M-D-CRB-14M 114.4 48/50HJ 020-028 62M-DTR-HG1525-H 62M-D-CRB-14M 114.462M750,950 ERV ERV Curb Hood O/A Outdoor AirRelief Hood 48/50PG 20-28 62M-DTR-HG1525-D 62M-D-CRB-14M 114.4Rooftop Unit 62M ERV Unit 86.25 RooftopUnit 57 9/16 Curb 95.7 See curb Detail 77 3/4Side View Rigging Details Physical Data Make Electrical Connections Electrical Data Without VAV Option Size ERV Electrical Data With VAV Option NEC FLA MCA VFD Exhaust and Supply Power Supply PRE Disconnect Economizer End Switch Wiring Typical Wiring Schematic, High Voltage Energy Recovery Ventilator PrimarySecondary MCA Minimum Circuit AmpsHigh Voltage Low Voltage Disconnect Fiop START-UP 62M040-120 ERV Wheel Pressure Drop 62M550-950 ERV Wheel Pressure Drop* 62M550,640 62M750,95062M040 Supply Air Fan Performance Curves 62M075 Supply Air Fan Performance Curves 62M120 Supply Air Fan Performance Curves 2800 26002400 220062M225 Supply Air Fan Performance Curves 62M285 Supply Air Fan Performance Curves 4500 4000 5500 5000 45004000 3500 3000 2500500 000 000 50062M640 Supply Air Fan Performance Curves 62M750 Supply Air Fan Performance Curves 10000 9500 11500 11000 105009000 8500 8000 7500 7000 6500 Blower Motor Pulley Adjustment Service Installing Wheel Segments 62M170-950 Units Wheel DriveMotor Series wheelMaintenance Diameter Seal Adjustment Copyright 2006 Carrier Corporation Page START-UP Checklist