Magic Aire HCA 04, Installation, Operation And Maintenance Manual

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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
t
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