Step 2 - Plan For Sequence Of Unit Installation; Step 3 - Inspect Unit; Step 4 - Provide Unit Support - United Technologies Carrier WeatherMaker 50TC A08 Series Installation Instructions Manual

50TC
50TC-_A/RTPF
50TC-_D/RTPF
50TC-_D/MCHX
Economizer
Vertical
Horizontal
Powered Outlet
Humidi-Mizer System
Curb
14 in. (356 mm)
24 in. (610 mm)
Step 2 — Plan for Sequence of Unit Installa-
The support method used for this unit will dictate dif-
tion —
ferent sequences for the steps of unit installation. For example,
on curb-mounted units, some accessories must be installed on
the unit before the unit is placed on the curb. Review the fol-
lowing for recommended sequences for installation steps.
CURB-MOUNTED INSTALLATION
• Install curb
• Install field-fabricated ductwork inside curb
• Install accessory thru-base service connection package
(affects curb and unit) (refer to accessory installation
instructions for details)
• Prepare bottom condensate drain connection to suit
planned condensate line routing (refer to Step 9 for
details)
• Rig and place unit
• Install outdoor air hood
• Install condensate line trap and piping
• Make electrical connections
• Install other accessories
PAD-MOUNTED INSTALLATION
• Prepare pad and unit supports
• Check and tighten the bottom condensate drain connec-
tion plug
• Rig and place unit
• Convert unit to side duct connection arrangement
• Install field-fabricated ductwork at unit duct openings
• Install outdoor air hood
• Install condensate line trap and piping
• Make electrical connections
• Install other accessories
FRAME-MOUNTED INSTALLATION — Frame-mounted
applications generally follow the sequence for a curb installa-
tion. Adapt as required to suit specific installation plan.
Step 3 — Inspect Unit —
tion damage. File any claim with transportation agency.
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.
Step 4 — Provide Unit Support
ROOF CURB MOUNT — Accessory roof curb details and
dimensions are shown in Fig. 7. Assemble and install
Table 1 — Operating Weights (50TC 08-14 Units)
08 09
705 (320) 845 (384)
730 (331) 855 (388)
805 (366) N/A
75 (34) 75 (34)
122 (55) 122 (55)
35 (16) 35 (16)
80 (36) 80 (36)
143 (65) 143 (65)
245 (111) 245 (111)
Inspect unit for transporta-
UNITS LB (KG)
12
855 (388)
865 (393)
820 (372)
75 (34)
122 (55)
35 (16)
80 (36)
143 (65)
245 (111)
accessory roof curb in accordance with instructions shipped
with the curb.
NOTE: The gasketing of the unit to the roof curb is critical for
a watertight seal. Install gasket supplied with the roof curb as
shown in Fig. 7 Improperly applied gasket can also result in air
leaks and poor unit performance.
Curb should be level. This is necessary for unit drain to
function properly. Unit leveling tolerances are shown in Fig. 6.
Refer to Accessory Roof Curb Installation Instructions for ad-
ditional information as required.
MAXIMUM ALLOWABLE DIFFERENCE IN. (MM)
A-B
0.5" (13)
Fig. 6 — Unit Leveling Tolerances
Install insulation, cant strips, roofing felt, and counter flash-
ing as shown. Ductwork must be attached to curb and not to
the unit. The accessory thru-the-base power and gas connec-
tion package must be installed before the unit is set on the roof
curb.
If electric and control wiring is to be routed through the
basepan, attach the accessory thru-the-base service connections
to the basepan in accordance with the accessory installation in-
structions.
SLAB MOUNT (HORIZONTAL UNITS ONLY) —
Provide a level concrete slab that extends a minimum of 6 in.
(150 mm) beyond unit cabinet. Install a gravel apron in front of
condenser coil air inlet to prevent grass and foliage from
obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
11
14 16
N/A N/A
1075 (489) 1305 (593)
1030 (467) N/A
75 (34) 100 (45)
122 (55) 115 (52)
35 (16) 32 (15)
85 (39) 62 (28)
143 (65) 180 (82)
245 (111) 235 (107)
B-C A-C
1.0" (25) 1.0" (25)