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Summary of Contents for ECR International EMI DHMZ218DA
- Page 1 PRESENTS MULTI-ZONE DUCTLESS SYSTEM OUTDOOR UNIT Installation, Operation Maintenance Manual MODELS DHMZ218DA 18 kBtu/h DHMZ327DA 27 kBtu/h DHMZ436DA 36 kBtu/h ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel. 800 325 5479 www.ecrinternational.com PN 615000259 REV. C [10/01/2021]...
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Page 2: Table Of Contents
CONTENTS PAGE SAFETY PRECAUTIONS ............GENERAL . -
Page 3: Safety Precautions
WARNING ELECTRICAL SHOCK HAZARD! Before installing, modifying, or servicing system, the main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. Failure to follow these instructions could result in personal injury or death CAUTION LACERATION, BURN HAZARD Laceration, burn hazard. -
Page 4: Items Included Wit Heating Unit
PARTS LIST Table 1—INCLUDED ITEMS PART NO. PART NAME QTY. Outdoor unit Literature package including installation instructions and warranty Grommet to secure the outdoor unit (helps with vibration prevention during unit operation) Drain Joint Drain Hose Conversion Joints (see Table 4) FIGURE 1 NOTE: −... -
Page 5: System Requirements
SYSTEM REQUIREMENTS Allow sufficient space for airflow and service of the unit. See Table 5 and Figure 5 for the required minimum distances between the unit, walls or ceilings. Table 3—Performance and Specifications Outdoor Condensing Unit Model DHMZ218DA DHMZ327DA DHMZ436DA Power supply 208-230/ 1/60 208-230/ 1/60... -
Page 6: Conversion Joints
Conversion Joints: The outdoor unit includes a package of conversion joints to facilitate installation of the various fan coil sizes. These joints are to be connected to the outdoor unit as needed to match the line set size. Table 4—Conversion Joints No. -
Page 7: Dimensions
FIGURE 2 - Outdoor Dimensions Size 18 k Model: DHMZ218DA 33 21 /32 [ 855 27 9/1 6 [ 701 21 1 /4 14 3 /16 [ 13 [ 540 [ 360 33 1 /4 [ 845 36 13 /16 [ 935 1 3 /32 [ 28... - Page 8 FIGURE 3 - Outdoor Dimensions Size 27 k Model: DHMZ327DA 37 5 /8 [ 956 31 7 /8 [ 810 26 1 /2 [ 673 19 /32 37 1 /4 [ 15 [ 946 40 11 /16 [ 1034 Master Valve Gas Line Master Valve Liquid Line...
- Page 9 FIGURE 4 - Outdoor Dimensions Size 36 k Model: DHMZ436DA 8 15 /32 Master Valve [ 215 Gas Line Master Valve Liquid Line 52 1 /2 [ 1333 23 /32 [ 18 3 11 /32 23 /32 [ 85 [ 18 3 11 /32 23 /32 [ 85...
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Page 10: Clearances
FIGURE 5 - Clearances Air-inlet Air-outlet Table 5 Clearances MINIMUM VALUE Reference in. (mm) 24 (609) 24 (609) 24 (609) 4 (101) 6 (152) NOTE: Outdoor Unit must be mounted at least 2in (50mm) above the maximum anticipated snow depth. FIGURE 6 Clearances for multiple units... -
Page 11: Installation Guide
INSTALLATION GUIDE Up to four fan coil units can be connected to one outdoor unit. S Avoid sags in the piping to prevent the formation of oil traps. Refer to the product data for approved combinations. Insulate each tube with minimum 3/8in. (10 mm) wall thermal pipe insulation. -
Page 12: Electrical Data
INSTALL ALL POWER AND INTERCONNECTING DRAIN CONNECTIONS WIRING TO OUTDOOR UNIT Install drains must meet local sanitation codes. 1. Mount the outdoor power disconnect. Install the outdoor unit drain joint 2. Run power wiring from the main box to the disconnect per Fit the seal into the drain joint, then insert the drain joint into the NEC and local codes. -
Page 13: Connection Diagrams
CONNECTION DIAGRAMS Indoor Indoor Indoor Unit A Indoor Unit B Unit A Unit B Power Supply Power Supply Ground Ground Signal Signal High High 208-230-1-60 208-230-1-60 Voltage Voltage CONNECTING CABLE CONNECTING CABLE 208-230-1-60 OUTDOOR TO INDOOR FIELD POWER SUPPLY OUTDOOR TO INDOOR L1(B) L2(B)S(B) L1(A) L2(A) -
Page 14: System Vacuum, Charge & Start−Up Of Outdoor Unit
SYSTEM VACUUM AND CHARGE 10. Reference Table 5 when additional charge is needed. CAUTION Disconnect the charge hoses and manifold gauge. Using a hexagonal wrench, fully open all the gas and liquid UNIT DAMAGE service valves for the size 18 and all the Master Gas and Liquid service valves for sizes 27−36 (see Fig. - Page 15 START−UP Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gauge capable of CAUTION accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and DO NOT apply power to the outdoor unit if the Master liquid water (see Fig.
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Page 16: Outdoor Unit Diagnostic Guides
Current protection of compressor Temperature protection of compressor discharge — — High temperature protection of condenser — — IPM module protection 2201 Dwyer Avenue, Utica, NY 13501 All specifications subject to change without notice. Tel. 800 325 5479 ©2021 ECR International, Inc. www.ecrinternational.com...
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