Magic Aire HB Series Installation, Operation And Maintenance Manual Download | Manualshive

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010-200002-000

Page 15

HB IOM 1.1 2-13-2014

HB Series

Service Clearances

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Summary of Contents for HB Series

Page 1: ...zed condensate trap present Is the condensate disposal system operating correctly Is auxiliary external condensate drain pan installed as recommended by IOM not required for valid warranty DX Sys tems...

Page 2: ...010 200002 000 Page 2 HB IOM 1 1 2 13 2014 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 3: ...it Suspension 7 External Vibration Isolators 7 Ductwork 8 Electrical 9 14 Service Clearance 15 Condensate Drain 16 Mixing Box Actuator 16 17 Mixing Box Air Sensor 18 Mixing Box 18 Mixing Box Linkage 1...

Page 4: ...ppropriate instructions including but not limited to those instructions supplied with the outdoor unit if applicable Installation must comply with all applicable local codes GENERAL Installation and m...

Page 5: ...ators are disconnected BE SURE that fans are properly grounded before working on them Failure to follow these warnings could result in per sonal injury or equipment damage DANGER NEVER enter an enclos...

Page 6: ...ective cover or grease from fan shaft until ready to install sheave Lay rigid temporary protection such as ply wood walkways in unit to prevent damage to insulation or bottom panel during installa tio...

Page 7: ...entirely through their associated fasteners It is recommended that framing be constructed from angle iron or formed strut materials Fig 3 Unit Suspension With Mixing Boxes HB units sizes 30 80 with mi...

Page 8: ...nit Attach the other side to the supply ductwork Seal the connec tions using duct mastic or HVAC tape Refer to Figure 5 Supply Ductwork Unit Sizes 60 80 Install supply ductwork by attaching a field pr...

Page 9: ...alled electric heat ers have fan starter and overload if required located inside the electric heat control box DANGER NEVER enter an enclosed fan cabinet or reach into a unit while the fan is running...

Page 10: ...used disconnect switch 75VA 24V control transformer fan relay or contactor or starter with overload if required low voltage terminal block and indoor enclosure 3 Typical wiring is shown For exact wir...

Page 11: ...rangement similar to MSS wiring see typical wiring diagrams previous page may be field provided and installed to allow the customer s con trols to start and stop the fan Selection of field pro vided a...

Page 12: ...S INSTALLATION ELECTRICAL cont d NOTES 1 Motor Start Stop Station MSS not required when factory installed electric heat is selected The electric heater contains the fan motor starter and low voltage c...

Page 13: ...S INSTALLATION ELECTRICAL cont d NOTES 1 Motor Start Stop Station MSS not required when factory installed electric heat is selected The electric heater contains the fan motor starter and low voltage c...

Page 14: ...tage controls with single point line power connection 2 Units will have Full Line Break heater contactor HC1 starting in 2012 See the unit wiring diagram for actual wiring 3 NOT ALL POSSIBLE WIRING AR...

Page 15: ...010 200002 000 Page 15 HB IOM 1 1 2 13 2014 HB Series Service Clearances...

Page 16: ...T condensate drain connection Measure maximum design negative static pressure up stream from the fan Referring to Fig 7 height H must be equal to or larger than negative static pressure at design oper...

Page 17: ...n actuator arm and link age arm on DR4 See Fig 11 Linkage rod may need to be cut to length Ensure actuator arm and linkage arm are parallel 4 Ensure linkage assemblies are properly secured as shown in...

Page 18: ...to mixed air sensor 6 Place enthalpy sensor shown in Fig 16 in location suitable to meet manufacturer s requirements 7 Connect all sensors to logic module per manufacturer s instructions 8 Test to ens...

Page 19: ...nstalled directly on the damper shaft if required If a factory supplied actuator is ordered for the mixing box refer to Mix ing Box Actuator 3 Orientate actuator to avoid interference with linkage ass...

Page 20: ...14 The actuator should now be able to power the dampers fully open and fully closed without interference Adjust linkage assemblies as need Fig 22 Area A Detailed View Fig 23 Area A Detailed View Insta...

Page 21: ...channel See Fig 24 Adjustable pitch sheaves are installed on the motor shaft 3 Rotating each sheave a half revolution will determine whether the sheave is wobbly or the drive shaft is bent Correct any...

Page 22: ...determine correct belt tension use the deflection formula given below and the tension data from Fig 26 as follows EXAMPLE Given Belt Span 16 in Belt Cross Section A Super Belt Small Sheave Pitch Diam...

Page 23: ...o the condensate line between the trap and the gate valve instead of open to the atmosphere Figure 28 illustrates the typical piping at the end of eve ry steam supply main Omitting this causes many fi...

Page 24: ...or any trap which has provision for passing air The great majority of high pressure return mains terminate in hot wells or deaerators which vent the air Fig 29 Multiple Coil High Pressure Piping NOTES...

Page 25: ...as an inner tube pierced to facilitate the distribution of the steam along the tube s length The outer tubes are expanded into plate fins The completed assembly includes the supply and condensate head...

Page 26: ...eaving side See unit label or certified drawing to assure con nection to matching suction and liquid connec tions The lower split of face split coils should be first on last off Row split coils utiliz...

Page 27: ...drop solenoid valve control as illustrated above with electric un loaders and let the control algorithm deter mine the combination of solenoid valves and unloaders to limit tons per circuit to accepta...

Page 28: ...ct insulation Remove all construction debris from unit interior Remove walkway before starting unit FILTERS Install unit filters in all filter sections Protect open filters from drywall dust and const...

Page 29: ...ervoir Method II Make connection to auxiliary drain valves 4 Fill reservoir with any inhibited antifreeze ac ceptable to code and underwriter authority 5 Open service valve and circulate solution for...

Page 30: ...supply line and the dirt leg ahead of the trap 2 Use a vacuum breaker in the return 3 Do not use overhead returns from the coil A floodback can occur 4 An immersion thermostat to control outdoor air d...

Page 31: ...lear space 3 Remove the flat coil stubout panel Refer to Figure 35 and 36 Note that there is another coil access panel on the opposite side of the unit SERVICE Coil Drainpan Removal and Reinstallation...

Page 32: ...l panel Figure 42 and 43 8 Remove coils from unit along with drainpan Drainpan will slide out of unit Figure 44 or 45 To remove coils and drainpan top will need to be lifted up as shown in Figure 40 9...

Page 33: ...nation up to 24 hours after sampling A low pH and high alkalinity cause system problems even when both values are within ranges shown The term pH refers to the acidity basicity or neutrality of the wa...

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