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7
TBI
II
FIELD
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POWER
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COCL
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EQUIP GND
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.............. J
LEGEND
EQUIP - Equipment
GND - Ground
NEC - National Electrical Code
TB - Terminal Board
NOTE: The maximum wire size for TB1 is 2/0
Fig. 11 - Field Power
Wiring
Connections
C06293
THERMOSTAT
ASSEMBLY
___+
ROOFTOPUNIT
C06298
Fig. 12 - Field Control
Thermostat
Wiring
Set heat anticipator settings
as shown
in Table 6.
Table 6 - Heat Anticipator
Settings
UNIT
ELECTRIC
SIZE
HEAT
50PM
(kW)
25
20-28
50
75
STAGE 1
(Wl) ON
Voltage
208/240
480
0.2
0.2
0.4
0.2
0.4
0.2
STAGES
1 AND
2
(Wl
and W2)
ON
Voltage
600
208/240
480
600
0.2
0.4
0.4
0.4
0.2
0.8
0.4
0.4
0.2
0.8
0.4
0.4
Settings
may be changed
slightly
to provide
a greater
degree
of
comfort
for a particular
installation.
Step 8 -- Install Outdoor
Air Hood
Perform
the following
procedure
to install the outdoor-air
hood on
units
equipped
with
an economizer,
two-position
damper,
or
outdoor-air
damper:
1. Remove
blank panel from return end of unit (hood section).
Save
the
screws.
See
Fig.
13 for shipping
location
of
components.
2. Hood
sides
are fastened
to sides of outdoor
air opening.
Remove
the hood sides and save the screws
(3 each side).
3. Remove
the bracket
holding
the bottom
half of the hood in
the shipping
position.
Remove
the hood
bottom
half and
filters
(or
manual
dampers
on units
so equipped)
from
outdoor
section.
NOTE:
On
units
without
economizers,
the
components
are
attached
to the unit basepan.
To access the components,
remove the
panel below
the outdoor
air intake section.
4. Remove
inner filter track from shipping
position
in outdoor
section.
Position
inner
filter
track
so the track
is facing
outward
from the unit. Install
the filter track with 4 screws
provided.
5. Apply
seal strip
(provided)
to back
flange
of both
hood
sides where hood side connects
to the unit back panel. (See
Fig. 14.)
6. Apply
seal strip (provided)
to top flange of both hood sides
where
hood sides connect
to the hood top panels.
(See Fig.
14.)
7. Install hood
sides to the back panels
using the screws
from
Step 2. The sloped
flanges
point outward.
The drip edges of
the side
panels
should
face outward
as well.
The
filter
guides
should
face inward
to hold the filters in place. (See
Fig. 14 0
8. Apply
seal strip along the entire length
of the bottom
flange
of the hood top. (See Fig. 14.)
9. Install
the bottom
part of the
hood
top using
4 screws
provided.
(See Fig. 14.)
10. Remove
the packaging
from
filters (3) and install
into the
filter tracks.
Slide the filters to the sides then place the last
filter into the center of the filter track.
NOTE:
For units
with
manual
dampers,
replace
the end filters
with the manual
dampers.
Install the filter in the center between
the
manual
dampers.
11. Install the filter retainer
track along
the bottom
edge of the
outdoor
air hood using 4 screws provided.
(See Fig. 14.)
12. Install
top section
of the outdoor
air hood using
9 screws
provided.
(See Fig.
14.) See Fig.
15 for a picture
of the
assembled
outdoor
air hood.
NOTE:
For filter removal,
remove
the four screws
holding
the
filter retainer.
The filters can then be removed,
cleaned,
or replaced.
Install
the filters by reversing
the procedure.
Manual Damper Assembly
For units equipped
with manual
dampers,
the assembly
process
is
similar
to the outdoor
air hood
for units with economizers.
There
are two slide dampers
shipped
with
the unit to allow
for manual
setting of the outside
air volume.
When assembling
the hood, place
one of the manual
slide dampers
in each of the end positions
and
the remaining
filter in the center position.
The manual
dampers
can
then be moved
to the appropriate
position
and then locked
into
place using
the screws mounted
in the adjustment
slots. (See Fig.
16.)
HOOD TOP
(TOP
HOOD
HOOD TOP
SIDE
(BOTTOM
HALF)
HOOD
SIDE
SECTION
C06283
Fig. 13 - Outdoor-Air
Hood
Compartment
Shipping
Location
24
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