background image

035-000049-001 

Page 5 

HCA IOM 1.1 8-28-2017 

PREINSTALLATION 

1.  Check items received against packing list. 
2.  Do not stack unit components or accessories 

during storage. Stacking can cause damage or 
deformation. 

3.  If unit is to be stored for more than 2 weeks pri-

or to installation, observe the following precau-
tions: 

a.  Choose a dry storage site that is reasona-

bly level and sturdy to prevent undue 
stress or permanent damage to the unit 
structure or components. Do not store unit 
on vibrating surface. Damage to stationary 
bearings can occur. Set unit off ground if in 
heavy rain area. 

b.  Remove all fasteners and other small parts 

from jobsite to minimize theft. Tag and 
store parts in a safe place until needed. 

c.  Cover entire unit with a tarp or plastic cov-

erall. Extend cover under unit if stored on 
ground. Secure cover with adequate tie-
downs or store indoors. Be sure all coil 
connections have protective shipping caps. 

d.  Monthly — Remove tarp from unit, enter 

fan section through access door or through 
fan inlet, and rotate fan and motor slowly 
by hand to redistribute the bearing grease 
and to prevent bearing corrosion. 

Rigging — 

Do not remove shipping skids or protec-

tive covering until unit is ready for final placement. 
Use slings and spreader bars as applicable to lift 
unit. 

Do not lift unit by coil connections or headers.  

Do not remove protective caps from coil piping 
connections until ready to connect piping. 
Do not remove protective cover or grease from 
fan shaft until ready to install sheave. 
Lay rigid temporary protection such as plywood 
walkways in unit to prevent damage to insula-
tion or bottom panel during installation. 

WARNING

-

AUXILIARY 

DRAIN 

PAN 

RECOMMMENDED:

This  product  has  an  auxiliary  condensate  drain 
which  should  be  piped  to  a  condensate  overflow 
sensor or safe drain location or both to protect the 
equipment  and  property  from  damage  in  the  case 
of condensate overflow.   

In  addition,  the  International  Mechanical  Code 
(IMC)  section  307.2.3  requires  the  use  of  auxiliary 
drain pans.  Many municipalities have adopted this 
code.   

Magic  Aire  holds  that  this  practice  represents  the 
standard for professional installation whether or not 
this code has been adopted in a specific municipal-
ity or territory.  As such, water damages that would 
have  been  prevented  had  an  auxiliary  pan  been 
deployed  will not  be considered for compensation.  
This  position  is  taken  regardless  of  whether  the 
source of the moisture was specified as a potential 
failure mode in the applicable building code or not.  
A  freeze  burst,  cracked  drain  pan,  failed  weld,  or 
corrosion  induced  leak  are  some  of  the  potential 
failure  modes  that  are  mitigated  when  an  auxiliary 
pan  is  properly  installed.    Professional  installers 
recognize  the  value  of  protecting  customer  assets 
against  foreseeable  events.    Customers  who 
choose  to  avoid  the  cost  of  common  protective 
measures waive their right to seek damages when 
those  foreseeable  events  occur.    If  the  product  is 
located  above  a  living  space  or  where  damage 
may result from condensate overflow, install a wa-
tertight  pan  of  corrosion-resistant  metal  beneath 
the  unit  to  catch  over-flow  which  may  result  from 
clogged  drains  or  from  other  reasons.  Provide 
proper  drain  piping  for  this  auxiliary  pan.  Consult 
local codes for additional precautions before instal-
lation.

Std High 1R 2R 4R 6R Steam

04

92

15 15 10 10 18 23

13

06

93

15 15 12 12 22 27

15

08

125

18 20 16 16 30 50

20

12

141

18 20 20 20 40 59

25

16

160

20 25 25 25 50 77

31

20

192

20 25 31 31 62 81

39

30

383

30 35 n/a 42 84 102

53

40

414

40 45 n/a 54 108 143

68

Coil Weight, Dry

Ca

bi

ne

Motor

Size

Component Weights (lbs)

Table 1 — Unit Dry Weight

UNIT WEIGHT CALCULATION

Calculation Procedure:

1.  Calculate coil water weight for 
each water coil using the following 
formula:   

    Water Weight =  
         Coil Volume (gal) x 8.345lb/gal  
         (volume is from Physical Data    
         table) 

2.  Calculate dry weight:   

        Cabinet Dry Weight  
     +Motor Weight 
     +Dry Coil Weight (coil 1) 
     +Dry Coil Weight (coil 2) 
         = Total Unit Dry Weight 

3.  Calculate total weight:   

       Total Unit Dry Weight  
     +Water Weight (coil 1)  
     + Water Weight (coil 2)
    = Total Unit Installed Weight

Summary of Contents for HCA 04

Page 1: ...ARNING Hazardous voltage Discon nect and Lock Out all incoming power sources before servicing or installing unit ELECTRIC SHOCK CAN CAUSE DEATH WARNING This equipment may be in stalled well above fini...

Page 2: ...035 000049 001 Page 2 HCA IOM 1 1 8 28 2017 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 3: ...G Remove Shipping Screws 4 PREINSTALLATION 5 Rigging 5 Unit Weight Calculation 5 INSTALLATION 6 18 Unit Suspension 6 7 External Vibration Isolators 7 Ductwork 8 Electrical 9 11 Service Clearance 12 Co...

Page 4: ...ampers until their operators are disconnected BE SURE that fans are properly grounded before working on them Failure to follow these warnings could result in personal injury or equipment damage DANGER...

Page 5: ...l Code IMC section 307 2 3 requires the use of auxiliary drain pans Many municipalities have adopted this code Magic Aire holds that this practice represents the standard for professional installation...

Page 6: ...ming be construct ed from structural steel or formed strut mate rials With Mixing Boxes HCA units sizes 30 40 with mixing boxes should be supported with crossbeams at each end of the unit and at the d...

Page 7: ...JURY CAUSED BY FALLING EQUIPMENT If uncertain about how to connect to the structure consult a qualified structural engineer Floor mounting Unit may be mounted on a housekeeping pad floor or platform C...

Page 8: ...side of a field provided flexible duct to the fan discharge duct collar on the front of the unit Attach the other side to the supply ductwork Seal the connec tions using duct mastic or HVAC tape Refe...

Page 9: ...WARNING For use with copper conductors only INSTALLATION ELECTRICAL INSTALLATION ELECTRICAL Typical wiring diagrams are shown on the fol lowing pages FOR REFERENCE Always re fer to the wiring diagram...

Page 10: ...circuit protection and wiring 6 To start the fan connect R and G1 or G2 or G3 to energize fan at each respective speed Add connection to terminal FLO4 on the control board EVOECM 4SPD to enable a four...

Page 11: ...components is the responsibility of the in staller including branch circuit protection and wiring 6 To start the fan apply 2 0VDC to plus and minus terminals Fan speed is variable from 2 0VDC minimum...

Page 12: ...S MAY BE ON ONE SIDE OR ON BOTH SIDES 4 REFER TO INSTALLATION INSTRUCTIONS FOR UNIT HANGING SUSPENSION REQUIREMENTS 5 COIL DRAINPAN OR BLOWER REPLACEMETN REQUIRES UNIT TO BE REMOVED TO FLOOR FOR SAFE...

Page 13: ...vent losing seal when starting up the unit After the fan is running with the design fan inlet negative pressure the elevation of the water on the unit side of the trap will be 1 below the drain invert...

Page 14: ...nto the condensate line between the trap and the gate valve instead of open to the atmosphere Figure 9 illustrates the typical piping at the end of every steam supply main Omitting this causes many fi...

Page 15: ...with a bucket trap 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 10 Multiple Coil High P...

Page 16: ...s length The outer tubes are expanded into plate fins The completed assembly includes the supply and condensate header and side casings which are built to slant the fin tube bundle back to ward the co...

Page 17: ...ions The lower split of face split coils should be first on last off Fig 13 Row split coils utilize special intertwined circuits either split of these row split coils can be first on last off SUCTION...

Page 18: ...o use drop solenoid valve control as illustrated above and let the suction cutoff unloaders ride with the load The second is to use drop solenoid valve control as illustrated above with electric un lo...

Page 19: ...tachometer to confirm operating speed access doors must be closed to apply correct external static pressure to the fan 3 Check direction of rotation see Fig 15 4 Check vibration If excessive vibration...

Page 20: ...use any aggressive paint solvent cleaning agents when cleaning 5 Never use a high pressure cleaner or water spray for cleaning particularly when the fan is running WARNING Wet cleaning under volt age...

Page 21: ...prevent the formation and build up of acids There are additional precautions and control strate gies as found in various catalogues and in the ASHRAE Fundamentals Handbook when the enter ing air tempe...

Page 22: ...clear space 3 Remove the flat coil stubout panel Refer to Figure 16 and 17 Note that there is another coil access panel on the opposite side of the unit SERVICE Coil Drainpan Removal and Reinstallatio...

Page 23: ...il panel Figure 23 and 24 8 Remove coils from unit along with drainpan Drainpan will slide out of unit Figure 25 or 26 To remove coils and drainpan top will need to be lifted up as shown in Figure 21...

Page 24: ...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...

Page 25: ...mary Auxiliary cu in note 2 Hot Water 1 row gal Hot Water 2 row gal Coil Face Area Pre Filter 12 x 24 16 x 32 3 Not all combinations equaling 10 rows are allowed Please refer to New Magic 4 Software f...

Page 26: ...035 000049 001 Page 26 HCA IOM 1 1 8 28 2017...

Page 27: ...necessary for proper condensate drainage Is properly sized condensate trap present Is the condensate disposal system operating correctly Is auxiliary external condensate drain pan installed as recomm...

Page 28: ...035 000049 001 Page 28 HCA IOM 1 1 8 28 2017 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 29: ...035 000049 001 Page 29 HCA IOM 1 1 8 28 2017 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 30: ...035 000049 001 Page 30 HCA IOM 1 1 8 28 2017 HCA Series Air Handler Installation Operation and Maintenance Manual...

Reviews: