25
connect on red wire from VAV-RTU Open Board J4 – Terminal 4
and wire from DPT “-” terminal to quick connect on black wire
from VAV RTU-Open Board J4-Terminal 5 with
3
/
16
-in. quick
connects. Wire nuts may also be used.
Proper installation of these components is required for accurate in-
put to Analog Input 1 (static_press) on the VAV-RTU Open Con-
trol Board. For more information on this, please refer to the
48/50LC*B07-26 Controls, Start-Up, Operation, and Trouble-
shooting
document.
Fig. 24 — Duct Pressure Transducer
Step 9 — Install Outside Air Hood
The outside air hood for the economizer is shipped in knock-down
form and requires field assembly. The panel for the hood top is
shipped on the end of the unit (see Fig. 25). The remaining parts
for the hood assembly (including side panels, filters and tracks)
are shipped in a carton that secured to the rear of the blower as-
sembly. Access the carton location through rear panel (see
Fig. 26).
Fig. 25 — Hood Top – Shipping Position
To remove the hood parts package:
1. Remove the back blower access panel.
2. Locate and cut the strap, being careful to not damage any
wiring.
3. Carefully lift the hood package carton through the back
blower access opening.
See Fig. 26 for identification of the various parts of the hood
assembly.
Fig. 26 — Hood Package – Shipping Location
To assemble the outside air hood (see Fig. 27 for hood compo-
nent locations):
1. Remove hood top panel from shipping position on unit end.
2. Install filters supports (item #1) to the upper end panel using
the screws provided.
3. Install each deflector (item #8) on to each filter support (item
#1) using the screws provided.
4. Apply seal strip to mating flanges on side plates of hood
(items #4 and #5).
5. Secure side panels (items #4 and #5) to upper panel using the
screws provided.
6. Apply seal strip to mating flange of the hood (see Fig. 27).
7. Secure hood top (item #3) to upper panel using the screws
provided. (On 44-in. chassis, remove the screws from across
top cover of unit. The rear flange of hood top will slide
behind unit top over flange.)
8. Secure side retainers (item #6) to side panels (items #4 and
#5) using the screws provided, screwing from outside of the
hood.
9. Secure each central retainer (item #2) to the hood top
(item #3). Then align central retainers to holes located on fil-
ter support (item #1), so central retainer is perpendicular to
hood and each filter support. Secure using screws provided.
10. Apply seal strip to top diverters (item #7).
11. Secure top diverters (item #7) to hood top (item #3).
12. Install outdoor air screens by sliding them into each of the
four spaces created by the hood, filter support and central
retainers. To do so, first insert the air screens into pocket cre-
ated at the end of hood (item #3), then fully put the air screen
into place, and then slide them back into pocket created in the
filter support (item #1). Repeat this for each air screen (see
Fig. 28). See Fig. 29 for completed hood assembly.
HIGH
LOW
+
–
++
HOOD TOP
SHIPPING
POSITION
HOOD
PACKAGE
Summary of Contents for WeatherExpert 48LC B14 Series
Page 4: ...4 Fig 2 48LC B14 Vertical Airflow ...
Page 5: ...5 Fig 3 48LC B14 Horizontal Airflow ...
Page 6: ...6 Fig 4 48LC B14 Back View and Condensate Drain Location ...
Page 7: ...7 Fig 5 48LC B14 Corner Weights and Clearances ...
Page 8: ...8 Fig 6 48LC B14 Bottom View ...
Page 9: ...9 Fig 7 48LC B17 20 Vertical Airflow ...
Page 10: ...10 Fig 8 48LC B17 20 Horizontal Airflow ...
Page 11: ...11 Fig 9 48LC B17 20 Back View and Condensate Drain Location ...
Page 12: ...12 Fig 10 48LC B17 20 Corner Weights and Clearances ...
Page 13: ...13 Fig 11 48LC B17 20 Bottom View ...
Page 14: ...14 Fig 12 48LC B24 26 Vertical Airflow ...
Page 15: ...15 Fig 13 48LC B24 26 Horizontal Airflow ...
Page 16: ...16 Fig 14 48LC B24 26 Back View and Condensate Drain Location ...
Page 17: ...17 Fig 15 48LC B24 26 Corner Weights and Clearances ...
Page 18: ...18 Fig 16 48LC B24 26 Bottom View ...
Page 21: ...21 Fig 20 48LC B14 Roof Curb Details ...
Page 22: ...22 Fig 21 48LC B17 20 Roof Curb Details ...
Page 23: ...23 Fig 22 48LC B24 26 Roof Curb Details ...
Page 30: ...30 Fig 40 48LC B14 26 VAV RTU Open Control Wiring Diagram ...
Page 31: ...31 Fig 41 48LC B14 26 Power Wiring Diagram ...
Page 53: ......