11
Fig. 11 — Indoor Coil Access Panel Relocation
Fig. 12 — Economizer Hood Construction
Fig. 13 — Economizer Filter Installation
Step 9 — Install External Condensate Trap and Line
The unit has one 3/4 in. condensate drain connection on the
end of the condensate pan and an alternate connection on the
bottom. See Fig. 14. Unit airflow configuration does not deter
-
mine which drain connection to use. Either drain connection
can be used with vertical or horizontal applications.
To use the alternate bottom drain connection, remove the red
drain plug from the bottom connection (use a 1/2 in. square
socket drive extension) and install it in the side drain
connection.
The piping for the condensate drain and external trap can be
completed after the unit is in place. See Fig. 14 and 15.
Fig. 14 — Condensate Drain Pan (Side View)
NOTE: If the alternate bottom drain is not used, check the drain
plug for tightness prior to setting the unit on the roof curb.
Fig. 15 — Condensate Drain Piping Details
All units must have an external trap for condensate drainage.
Install a trap at least 4 in. (102 mm) deep and protect against
freeze-up. If drain line is installed downstream from the exter
-
nal trap, pitch the line away from the unit at 1 in. per 10 ft
(25 mm in 3 m) of run. Do not use a pipe size smaller than the
unit connection (3/4 in.).
Step 10 — Make Electrical Connections
NOTE: Check all factory and field electrical connections for tight
-
ness. Field-supplied wiring shall conform with the limitations of
minimum 63°F (33°C) rise.
Side
Panel
Indoor
Coil
Access
Panel
Indoor
Coil
Access
Panel
Caulk
Here
Top
Panel
Rain Deflectors
Top
Panel
Indoor Coil
Access Panel
Screw
Hood Divider
Left
Hood
Side
Divider
Barometric
Relief
Cleanable
Aluminum
Filter
Filter
Hood
Filter
Clip
Outside
Air
WARNING
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal
injury if an electrical fault should occur. This ground may
consist of electrical wire connected to unit ground lug in
control compartment, or conduit approved for electrical
ground when installed in accordance with NEC; ANSI/
NFPA 70, latest edition (in Canada, Canadian Electrical
Code CSA [Canadian Standards Association] C22.1), and
local electrical codes.
Drain Plug
(Factory-Installed)
Condensate Pan (Side View)
Standard
Side Drain
Alternate
Bottom Drain
Minimum Pitch
1" (25 mm) Per
10' (3m) of Line
To Roof
Drain
Base Rail
Open
Vent
3" (76 mm)
See Note
Roof
Curb
Drain Plug
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4 in. (102 mm) trap is recommended.
Min
Summary of Contents for Legacy 547K 14
Page 4: ...4 Fig 2 547K 14 Unit Dimensional Drawing...
Page 5: ...5 Fig 2 547K 14 Unit Dimensional Drawing cont...
Page 8: ...8 Fig 5 547K 14 Roof Curb Details...
Page 21: ...21 Fig 41 Typical Control Wiring Diagram Electromechanical with W7220 Controller...
Page 22: ...22 Fig 42 Typical Power Wiring Diagram 208 230 460 3 60 Unit Shown...
Page 23: ...23 Fig 43 Typical Power Wiring Diagram 575 3 60 Unit Shown...
Page 41: ......
