9
NOTE:
Trap should be deep enough to offset maximum
unit static difference. A minimum 4” trap is recommended.
Drain Plug
Roof Curb
See NOTE
Base Rail
Open Vent
2” Min
Drain Connection
Install condensate drain trap as shown. Use 3/4” drain line and
fittings or larger. Do not operate without trap.
H
ORIZONTAL
D
RAIN
Drainage of condensate directly onto the roof may be acceptable
(refer to local code). It is recommended that a small drip pad of
either stone, mortar, wood or metal be provided to prevent any
possible damage to the roof. When using the horizontal drain con-
nection, check the drain plug in bottom connection to ensure it is
tight.
V
ERTICAL
D
RAIN
To use the bottom drain connection, remove the drain plug from
the bottom connection and install it in the horizontal connection.
C
LEANING
Due to the fact that drain pans in any air conditioning unit will
have some moisture in them, algae and fungus will grow due to
airborne bacteria and spores. Periodic cleaning is necessary to
prevent this build-up from plugging the drain.
STARTUP, ADJUSTMENTS, AND CHECKS
HIGH VOLTAGE!
OND
THE
FRAME
OF
THIS
UNIT
TO
THE
BUILDING
ELECTRICAL
GROUND
BY
USE
OF
THE
GROUNDING
TERMINAL
PROVIDED
OR
OTHER
ACCEPTABLE
MEANS
. D
ISCONNECT
ALL
POWER
BEFORE
SERVICING
OR
INSTALLING
THIS
UNIT
.
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
B
WARNING
P
RE
-S
TARTUP
I
NSTRUCTIONS
T
O
PREVENT
PROPERTY
DAMAGE
OR
PERSONAL
INJURY
, D
O
NOT
START
THE
UNIT
UNTIL
ALL
NECESSARY
PRE
-
CHECKS
AND
TESTS
HAVE
BEEN
PERFORMED
.
CAUTION
Prior to the beginning of Startup, Adjustments, and Checks proce-
dures, the following steps should be completed in the building.
MOVING MACHINERY HAZARD!
T
O
PREVENT
POSSIBLE
PERSONAL
INJURY
OR
DEATH
,
DISCONNECT
POWER
TO
THE
UNIT
AND
PADLOCK
IN
THE
“
OFF
”
POSITION
BEFORE
SERVICNG
FANS
.
WARNING
H
EATING
S
TARTUP
On new installations, or if a major component has been replaced,
the operation of the unit must be checked.
Check unit operation as outlined in the following instructions. If
any sparking, odors, or unusual sounds are encountered, shut off
electrical power and recheck for wiring errors, or obstructions in
or near the blower motors.
Duct covers must be removed before
operating unit.
The Startup, Adjustments, and Checks procedure provides a step-
by-step sequence which, if followed, will assure the proper startup
of the equipment in the minimum amount of time. Air balancing
of duct system is not considered part of this procedure. However,
it is an important phase of any air conditioning system startup and
should be performed upon completion of the Startup, Adjustments,
and Checks procedure. The Startup, Adjustments, and Checks pro-
cedure at outside ambients below 55°F should be limited to a readi-
ness check of the refrigeration system with the required final check
and calibration left to be completed when the outside ambient
rises above 55°F.
T
EMPORARY
H
EATING
O
R
C
OOLING
If the unit is to be used for temporary heating or cooling, a
“
Startup,
Adjustments, and Checks” must first be performed in accordance
with this manual. Damage or repairs due to failure to comply with
these requirements are not covered under the warranty.
After
the machines are used for temporary heating or cooling, inspect
the coils, fans, and motors for unacceptable levels of construction
dust and dirt and install new filters.
C
ONTRACTOR
R
ESPONSIBILITY
The installing contractor must be certain that:
•
All supply and return air ductwork is in place, properly
sealed, and corresponds with installation instructions.
•
All thermostats are mounted and wired in accordance
with installation instructions.
•
All electric power, all gas, hot water or steam line
connections, and the condensate drain installation have
been made to each unit on the job. These main supply
lines must be functional and capable of operating all units
simultaneously.
•
All filters are in place.
R
OOF
C
URB
I
NSTALLATION
C
HECK
Inspect the roof curb for correct installation. The unit and curb
assembly should be level. Inspect the flashing of the roof mount-
ing curb to the roof, especially at the corners, for good workman-
ship. Also check for leaks around gaskets. Note any deficiencies in
a separate report and forward to the contractor.
O
BSTRUCTIONS
, F
AN
C
LEARANCE
AND
W
IRING
