Carrier 48TJ016-028 - Manual (Page 15)

step 12 — Install All Accessories — install all
field-installed accessories. Refer to the accessoiy installation
instructions included with each accessoiy.
MOTORMASTER® I CONTROL INSTALLATION
(48TJ0I6,020 UNITS)
Install Field-Fabricated Wind Baffles — Wind baffles must
be field-fabricated for all units to ensure proper cooling cycle
operation at low ambient temperatures. See Fig. 21 for baffle
detiiils. Use 20-gage, galvanized sheet metal, or similar
coiTosion-resistant metal for baffles. Use field-supplied screws
to attach baffles to unit. Screws should be V
4
-in. diameter and
5/8-in. long. Drill required screw holes for mounting baffles.
A CAUTION
To avoid diunage to the refrigerant coils and electrical com­
ponents, use recommended screw sizes only. Use care
when drilling holes.
Install Motormaster I Controls — Only one Motormaster I
control is required per unit. Tlie Motormaster I control must be
used in conjunction with the Accessoiy 0° F Low Ambient Kit
(purchased separately). Tlie Motonnaster I device controls out­
door fan no. I while outdoor fans no. 2 and ."5 are sequenced off
by the Accessoiy 0° F Low Ambient Kit.
Accessory 0° F Low Ambient Kit — Instiill the Accessoiy 0° F
Low Ambient Kit per instmction supplied with accessoiy.
Sensor Assembly — Install the sensor assembly in the location
shown in Fig. 22.
Motor Mount — To ensure proper fan height, replace the exist­
ing motor mount with the new motor mount provided with
accessoiy.
Transformer (460 and 575-v Units Only) — On 460 and 575-v
units, a transfonner is required. The transformer is provided
with the accessoiy and must be field-installed.
Motormaster I Control — Recommended mounting location is
on the inside of the panel to the left of the control box. The
control should be mounted on the inside of the panel, verti­
cally, with leads protniding from bottom of extinsion.
NOTE: Dimensions in ( ) are in mm.
Fig. 21 — Wind Baffle Details
SENSOR -
LOCATION
0
о о ° o 0 0
ï h -
cp o
0 0
cp o
i h "
cp o
î i ° ° i l »
cp 0
(b 0
cp 0
i l »
cp 0
0 0
cp 0
i l »
G ) o
d ) o
cp o
i l "
G ) o cp o
i l »
® 0
d > 0
tp 0
i l »
0
о о ° 0
d > 0
cp 0
i l »
(p 0
Î0 0
cp 0
i l »
(p 0 cp 0
i l »
cp 0 tp 0
i l »
cp o
SENSOR ----------
cp o
© 0
LOCATION
i l »
G) 0
î i “ ° è 0
cp 0
i l »
G) 0
0 0
cp 0
i l »
G ) o
© o
cp o
i l »
G ) o
î i ° °
cp o
i l »
cp 0
о о ° o cb 0
tp 0
i l »
0
î i ° ° 0 0
cp 0
i l »
HAiRPIN END
48TJ016
HAIRPIN END
48TJ020
NOTE: All sensors are located on the eighth hairpin up from the
bottom.
Fig. 22 — Motormaster I Sensor Locations
15