Step 2 -- Rig and Place Unit -- Keep unit upright,
and do not &op. Use spreader bal_ over unit to prevent sling or
cable &image. Rollers may be used to move unit across a roof.
Level by using unit frame as a reference; leveling tolerance is
_+1/16in. per line;u" fl in any direction. See Fig. 3 for additional
information. Unit weight is shown in Table 1.
Four liming holes ale provided in ends of unit base r;fils as
shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING -- Provide clearance around and above unit
for airflow, safety, and service access (Fig. 4).
Do not install unit in an indoor location. Do not locate ;dr
inlets near exhaust vents or other sources of contaminated ail_
Although unit is weatherproof, guard against water fiom
higher level runoff and overhangs.
ROOF MOUNT -- Check building codes for weight distribu-
tion requirements.
Step 3 -- Field Fabricate Ductwork -- Secure _dl
ducts to building structure. Use flexible duct connectors be-
tween unit and ducts as required. Insulate and weatherproof all
external ductwork, joints, and roof openings with counter
flashing and mastic in accordance with applicable codes.
Ducts passing through an unconditioned space must be in-
sulated and covered with a vapor barriel:
The 50HJ units with electric heat require a l-in. clearance
for the that 24 in. of ductwork.
Outlet grilles must not lie directly below unit discharge.
NOTE: A 90-degree elbow must be provided in the ductwoN
to comply with UL (Underwritel_ Laboratories) codes for use
with electric heat.
SEE
"DETAIL
10'-0"
(3048)
"DETAIL A"
RIGGINGHOOK
3'-71/2"
(t 105)
UNITBASERAIL
MAXIMUM DIMENSIONS
UNIT SHIPPING WEIGHT A B
50HJ
Ib ] kg ft-in. ] mm ft-in, mm
015 1625 I 737 6-11V2 I 2121 4-0 1219
017 1700 771 6-11V2 2121 3-10 1168
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Refer to Table 1 for unit operating weights,
3. Remove boards at ends of unit and runners prior to rigging.
4. Rig by inserting hooks into unit base rails as shown, Use corner
post from packaging to protect coil from damage. Use bumper
boards for spreader bars,
5. Weights do not include optional economizer. Add 90 Ib (41 kg)
for economizer weight.
6. Weights given are for aluminum evaporator and condenser coil
plate fins, Weights include electric heat.
7. Add 75 Ib (34 kg) for crating on 50HJ015 and 017 units,
8. Add 150 Ib (68 kg) for copper condenser coil, Add 280 Ib
(127 kg) for copper condenser and evaporator coils.
For vertical supply and return units, tools or parts could
drop into ductwork and cause an injury. Install a 90-degree
turn in the return ductwork between the unit and the condi-
tioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be inst_dled
to prevent objects from falling into the conditioned space.
Due to electric heatel: supply duct will requile 90-degree
elbow.
All panels must be in place when rigging.
Fig. 3 -- Rigging Details
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