kept clean or replaced with same size and type. Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown. Minimum filter area and required sizes are shown in Table 2.
CONDENSATE DRAIN
Plumbing must conform to local codes. Use a sealing
FIG. 2 - RECOMMENDED DRAIN PIPING
compound on male pipe threads. Install a condensate drain line from the 3/4" PVC female connection on the unit to spill into an open drain.
NOTE: The condensate drain line MUST be trapped to pro- vide proper drainage. See Figure 2.
SERVICE ACCESS
Access to all serviceable components is provided by the following removable panels:
•Compressor compartment
•Heater compartment
•Blower compartment
•Main control box
•Filter compartment
•Motor Access (on units
Refer to Figure 5 for location of these access panels.
CAUTION: Make sure that all screws are replaced on the unit to maintain an
NOTE: If the unit has an economizer, remove jumper J1 from terminals 8 and 10 on the relay board to prevent simul- taneous operation of the compressor and the econo- mizer. If you want to control the economizer on a second stage of cooling, use a thermostat with two stages of cooling.
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of the National Electrical Code (NEC) ANSI/NFPA70 (in USA), current Canadian Electric Code (CEC) C22.1 (in Canada) and/or local ordinances. The unit must be electrically grounded in accordance with the NEC and CEC (as specified above) and/or local codes. Voltage tolerances which must be maintained at the compressor terminals during starting and running conditions are indicated on the unit Rating Plate and Table 1.
The wiring harness furnished with this unit is an integral part of a UL design certified unit. Field alteration to comply with electrical codes should not be required.
A disconnect switch should be field provided for the unit. The switch must be separate from all other circuits. Refer to Figure 5 for installation location. If any of the wire supplied with the unit must be replaced, replacement wire must be of the type shown on the wiring diagram.
Electrical lines must be sized properly to carry the load. USE COPPER CONDUCTORS ONLY. Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly protected.
CAUTION: When connecting electrical power and control wir- ing to the unit, waterproof type connectors MUST BE USED so that water or moisture cannot be drawn into the unit during normal operation. The above waterproofing conditions will also apply when installing a
Refer to Figure 4 for typical field wiring and to the appropriate unit wiring diagram for control circuit and power wiring information.
THERMOSTAT
The room thermostat should be located on an inside wall approximately 56" above the floor where it will not be subject to drafts, sun exposure, or heat from electrical fixtures or appliances. Follow manufacturer's instructions enclosed with thermostat for general installation procedure. Color coded insulated wires (#18 AWG) should be used to connect thermostat to unit. See Figure 4 for wiring details.
TABLE 2 - PHYSICAL DATA
BLOWER SPEED SELECTION
Three blower motor speeds are available on the
All
motor for the speed desired.
| MODELS |
| DEE |
| |
| 036 | 048 | 060 | ||
|
| ||||
EVAPORATOR | CENTRIFUGAL BLOWER (Dia. x Wd. in.) | 12 x10 | 12 x10 | 12 x 10 | |
FAN MOTOR HP |
|
| 1 | ||
BLOWER |
|
| |||
FAN MOTOR HP | 1.5 | 1.5 | 1.5 | ||
| |||||
EVAPORATOR | ROWS DEEP | 3 | 3 | 3 | |
FINS PER INCH | 13 | 13 | 13 | ||
COIL | |||||
FACE AREA (Sq. Ft.) | 3.6 | 4.3 | 5.1 | ||
| |||||
CONDENSER | PROPELLER DIA. (in.) | 22 | 22 | 22 | |
FAN MOTOR HP |
|
|
| ||
FAN |
|
|
| ||
NOM. CFM TOTAL | 4,500 | 4,200 | 4,500 | ||
| |||||
CONDENSER | ROWS DEEP | 2 | 2 | 2 | |
FINS PER INCH | 18 | 18 | 18 | ||
COIL | |||||
FACE AREA (Sq. Ft.) | 17.1 | 17.1 | 17.1 | ||
| |||||
AIR | QUANTITY PER UNIT (15" x 20" x 1") | 2 | 2 | 2 | |
FILTERS | QUANTITY PER UNIT (14" X 25" X 1") | 1 | 1 | 1 | |
(SEE NOTE) | TOTAL FACE AREA (sq. ft.) | 6.6 | 6.6 | 6.6 | |
CHARGE | REFRIGERANT 22 (lbs./oz.) | 9/12 | 9/8 | 9/8 | |
COMPRESSOR | QUANTITY PER UNIT (HERMETIC TYPE) | 1/RECPT | 1/RECPT | 1/SCROLL |
NOTE: Filter racks are adapted for 1" or 2" thick filters.
WEIGHTS (LBS)
| 3 Ton | 545 | |
Basic Unit | 4 Ton | 585 | |
| 5 Ton | 610 | |
ACCESSORIES / OPTIONS | |||
Electric Heat | 5 - 7 KW | 18 | |
10 - 15 KW | 23 | ||
(Nominal KW) | |||
20 - 30 KW | 28 | ||
| |||
Economizer |
| 50 | |
Motorized Outdoor | 26 | ||
Air Damper |
| ||
|
| ||
Relief/Fixed |
| 10 | |
Air Damper |
| ||
|
| ||
Roof Mounting Curb | 92 | ||
5 | |||
4 | Unitary Products Group |
