ECR International EMI DHMZ218DA Installation, Operation And Maintenance Manual Download

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ECR International Inc.

2201 Dwyer Avenue, Utica, NY 13501

Tel. 800

325

5479

www.ecrinternational.com

615000259

REV.

[

/20

]

MULTI-ZONE

DUCTLESS SYSTEM

OUTDOOR UNIT

Installation, Operation

and

Maintenance Manual

DHMZ218DA  18  kBtu/h
DHMZ327DA  27  kBtu/h
DHMZ436DA 36  kBtu/h

PRESENTS

MODELS

Summary of Contents for EMI DHMZ218DA

Page 1: ...ca NY 13501 Tel 800 325 5479 www ecrinternational com PN 615000259 REV C 10 01 2021 MULTI ZONE DUCTLESS SYSTEM OUTDOOR UNIT Installation Operation and Maintenance Manual DHMZ218DA 18 kBtu h DHMZ327DA 27 kBtu h DHMZ436DA 36 kBtu h PRESENTS MODELS ...

Page 2: ...CAUTIONS 3 GENERAL 3 ITEMS INCLUDED WIT HEATING UNIT 4 SYSTEM REQUIREMENTS 5 PIPING REQUIREMENTS 5 CONVERSION JOINTS 6 WIRING 6 DIMENSIONS 7 CLEARANCES 10 INSTALLATION GUIDE 11 INSTALLATION TIPS 11 OUTDOOR UNIT INSTALLATION 11 ELECTRICAL DATA 12 CONNECTION DIAGRAMS 13 SYSTEM VACUUM CHARGE START UP OF OUTDOOR UNIT 14 OUTDOOR UNIT DIAGNOSTIC GUIDES 16 2 615000259 REV C 10 01 2021 ...

Page 3: ...ses and work gloves Keep a quenching cloth and fire extinguisher nearby when brazing Use care in handling rigging and setting bulky equipment Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and current editions of the National Electrical Code NEC NFPA 70 In Canada refer to current editions of the Ca...

Page 4: ...owing into the indoor unit along the connection pipe by making a downward arc in the connection pipe before it enters the wall to the indoor unit This ensures that rain drips from the connection pipe before it enters the wall Piping and the interconnecting wiring are field supplied The illustration above is only a sketch Different models may differ slightly The following units are covered in these...

Page 5: ...ITY A 25 0 30 0 35 0 MAX TIME DELAY FUUSE OR HARC BREAKER A 35 0 45 0 50 0 Outdoor air flow m3 h 3619 3619 7646 Outdoor air flow cfm 2130 2130 4500 Outdoor noise level dB A 63 4 62 3 64 Outdoor unit Dimension WxDxH inch 3613 16 x 143 16 x 279 16 4011 16 x 161 8 x 317 8 411 8 x 155 16 x 521 2 Dimension WxDxH mm 935 x 360 x 701 1034 x 410 x 810 1045 x 389 x 1333 Packing WxDxH inch 427 8 x 1911 16 x ...

Page 6: ... wires are line voltage AC power one is communication wiring S and the other is a ground wire Wiring between indoor and outdoor unit is polarity sensitive The use of BX wire is NOT recommended If installed in a high Electromagnetic field EMF area and communication issues exists a 14 2 stranded shielded wire can be used to replace L2 and S between outdoor unit and indoor unit landing the shield ont...

Page 7: ...27 9 1 6in 701 mm 14 3 16in 360 mm 33 21 32in 855 mm 36 13 16in 935 mm 33 1 4 in 845 mm 21 1 4 in 540 mm 14 9 16in 370 mm 13 3 16in 335 mm 13 25 32 350 mm 2 19 32in 66 mm 1 2in 12 mm 1 2in 13 mm 1 3 32in 28 mm 3 11 16in 94 mm 6 1 2in 165 mm 4 19 32in 117 mm 3 1 32in 77 mm 3 1 32in 77 mm 615000259 REV C 10 01 2021 ...

Page 8: ...mm 40 11 16in 1034 mm 3 9 16in 91 mm 18 5 32in 461 mm 17 13 32in 442 mm 3 11 32in 85 mm 3 11 32in 85 mm 3 11 32in 85 mm 3 11 32in 85 mm 16 1 8in 410 mm 15 3 16in 386 mm 2 7 8in 73 mm 15 32in 12 mm 15 32in 12 mm 15 7 8in 403 mm 6 11 16in 172 mm 3 3 16in 81 mm Master Valve Gas Line Master Valve Liquid Line 615000259 REV C 10 01 2021 ...

Page 9: ...3 32in 18 mm 3 11 32in 85 mm 3 11 32in 85 mm 3 11 32in 85 mm 4 13 32in 112 mm 3 in 76 mm 8 15 32in 215 mm 41 1 8in 1045 mm 14 7 32in 361 mm 1 3 16in 30 mm 3 15 16in 100 mm 24 31 32in 634 mm 15 5 16in 389 mm 14 31 32in 380 mm 15 29 32in 404 mm 3 5 8in 92 mm 2 3 32in 53 mm R 1 2in 75 mm R 19 64in 12 5 mm Detail A Detail A 17 5 8in 448 mm 615000259 REV C 10 01 2021 ...

Page 10: ...e onamultipleparallel unitarrangement 4in 10cm ormoreon asingleparallelunit arrangement 24in 60cm ormore 59in 150cm ormoreona multipleparallel unitarrangement 24in 61cm ormore 9 8in 25cm ormorefor properairflow 24in 61cm or moreis recommended forservice 9 8in 25cm ormoreforproperairflow 24in 61cm ormoreis recommended forservice onasingleparallel unitarrangement FIGURE 5 Clearances FIGURE 6 Clearan...

Page 11: ...tubing free of dirt sand moisture and other contaminants to avoid damaging the refrigerant system S Avoid sags in the piping to prevent the formation of oil traps Insulate each tube with minimum 3 8in 10 mm wall thermal pipe insulation Inserting the tubing into the insulation before making the connections saves time and improves installation quality 1 The unit is equipped with multiple pairs of se...

Page 12: ...E 11 Field Wiring DRAIN CONNECTIONS Install drains must meet local sanitation codes Install the outdoor unit drain joint Fit the seal into the drain joint then insert the drain joint into the base pan hole of the outdoor unit Rotate 90_ to securely assemble them Connect the drain joint with an extension drain hose to avoid condensate from draining off the outdoor unit during the heating mode Seal ...

Page 13: ...08 230 1 60 Main Power Supply 208 230 1 60 Power to Indoor Unit A Indoor Unit A Signal High Voltage L2 L1 A S A L2 A Ground L1 B L1 C L2 B L2 C S B S C Power to Indoor Unit B Power to Indoor Unit C 208 230 1 60 208 230 1 60 Indoor Unit B Signal High Voltage Indoor Unit C Signal High Voltage CONNECTING CABLE OUTDOOR TO INDOOR S L1 L2 Indoor Unit A Power Supply 208 230 1 60 Indoor Unit A Signal High...

Page 14: ... to evacuate all circuits at the same time see Fig 20 4 Connect the charge hose to the vacuum pump see Fig 16 5 Open fully the low pressure valve of the manifold gauge see Fig 19 for size 18 Fig 20 for sizes 27 36 6 Start the vacuum pump 7 8 9 Evacuate using either the deep vacuum or the triple evacuation method see Fig 21 and 22 After the evacuation is complete fully close the low pressure valve ...

Page 15: ...00 MICRONS EVACUATE TO 500 MICRONS MINIMUM HOLD FOR 30 MINUTES RELEASE CHARGE INTO SYSTEM BY OPENING VALVES COMPLETELY BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG EVACUATE TO 1000 MICRONS BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG FIGURE 22 Triple Evacuation Method Final Tubing Check IMPORTANT Ensure the factory tubing on both the indoor and outdoor unit has not shifted during shipment Ensure tubes are...

Page 16: ...D displays an error code or a protection code The diagnostic codes displayed on the outdoor units are listed on Table 10 Table 10 Outdoor Unit Error Display OUTDOOR UNIT DISPLAY LED STATUS INDOOR UNIT DISPLAY E0 Outdoor EEPROM malfunction F4 E2 Communication malfunction between indoor and outdoor units E1 E3 Communication malfunction between IPM board and outdoor main board E4 Open or short circui...

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