Carrier 012 Bat, Ofc, Dat, Emc/Emfc, Emo/Emfo, Ifc, Unit Heater Required Config, Uration

Page 13

LEGEND

BAT

Ð Battery

OFC

Ð Outdoor-Fan Contactor

C

Ð Contactor

P

Ð Plug

CB

Ð Circuit Breaker

TB

Ð Terminal Board

DAT

Ð Discharge-Air Thermistor

TRAN Ð Transformer

EMC/EMFC

Ð Energy Management Closed

 

Field Wiring

EMO/EMFO

Ð Energy Management Open

 

 

Factory Wiring

EQUIP

Ð Equipment

 

GND

Ð Ground

 

Splice Connection (Factory Supplied)

HR

Ð Heater Relay

 

 

 

IFC

Ð Indoor-Fan Contactor

 

 

Fig. 16 Ð Field Wiring Connections

UNIT

CONTROL

BOARD

RACEWAY

Fig. 17 Ð Field Control Wiring Raceway

Step 6 Ð Adjust Indoor-Fan Speed Ð Adjust in- door fan speed to meet jobsite conditions.

For units with electric resistance heating, required mini- mum L/s (cfm) is 1062 (2250) for 50LJQ008 and 1416 (3000) or 50LJQ012, with the following exceptions.

UNIT

UNIT

HEATER

UNIT

REQUIRED

CONFIG-

MINIMUM

50LJQ

VOLTAGE

kW

URATION

L/s

Cfm

 

 

 

 

220

50.0

Horizontal

1534

3250

 

or Vertical

012

 

 

 

 

400

50.0

Horizontal

1605

3400

 

 

or Vertical

 

 

 

 

 

 

 

 

 

 

 

Tables 5A and 5B show fan rps and rpm at motor pulley settings. Refer to Tables 6-13 to determine fan speed settings.

Fan motor pulleys are factory set for speed shown in Tables 1A and 1B.

To change fan speed:

a.Shut off unit power supply.

b.Loosen belt by loosening fan motor mounting nuts. See Fig. 18.

c.Loosen movable pulley ¯ange setscrew (see Fig. 19).

d.Screw movable ¯ange toward ®xed ¯ange to increase speed and away from ®xed ¯ange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maxi- mum speed speci®ed in Tables 1A and 1B.

e.Set movable ¯ange at nearest keyway of pulley hub and tighten setscrew (see Tables 1A and 1B for speed change for each full turn of pulley ¯ange).

To align fan and motor pulleys:

a.Loosen fan pulley setscrews.

b.Slide fan pulley along fan shaft.

c.Make angular alignment by loosening motor from mount- ing plate.

To adjust belt tension (see Fig. 18):

a.Loosen fan motor mounting bolts.

b.Slide motor mounting plate away from fan scroll for proper belt tension (13 mm [1¤2-in.] de¯ection with one ®nger) and tighten mounting bolts.

c.Adjust bolt and nut on motor mounting plate to secure motor in ®xed position.

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Contents Installation, Start-Up and Service Instructions Unit Size ``F Power Roof Curb ``A Unit Size AccessoryConnector PKG. ACC50LJQ Unit MAX Dimensions WeightÐ Physical Data SI Base Unit 50QJ Ð Physical Data EnglishWeight ``D 50LJQ Weight ``BUnit STD. Unit Economizer Corner ``H ``JGND EquipHTR Page Equip Equip Electrical Data Unit Voltage American/European Wire ConversionsAmerican European BAT Unit Heater Required ConfigOFC DAT50LJQ Motor Pulley Turns Open Ð Fan Rpm at Motor Pulley Settings EnglishAirflow Rpm Bhp External Static Pressure in. wg2200 459 2400 482START-UP Heater Contactor ContactorOAT Ð Outdoor-Air Thermostat OFC Ð Outdoor-Fan ContactorService Lubrication Cooling Charging Charts, 50LJQ008 Page Page Copyright 1992 Carrier Corporation

012, 50LJQ008 specifications

The Carrier 012,50LJQ008 is a state-of-the-art air conditioning unit, specifically designed to provide optimal temperature control and energy efficiency for residential and commercial applications. As part of Carrier's renowned portfolio, this model incorporates innovative technologies and user-friendly features that set it apart from competitors in the market.

One of the standout characteristics of the Carrier 012,50LJQ008 is its high energy efficiency rating. Equipped with advanced inverter technology, this unit adjusts its cooling output based on the ambient temperature and humidity levels, reducing energy consumption while maintaining consistent comfort. This not only lowers utility bills but also minimizes the environmental impact, making it a sustainable choice for modern living.

In terms of cooling capacity, the Carrier 012,50LJQ008 offers a formidable performance, capable of efficiently cooling spaces of varying sizes. Its robust compressor ensures rapid cooling while remaining remarkably quiet, which is particularly advantageous for residential settings. The unit’s capacity to handle high ambient temperatures allows it to perform reliably even in extreme weather conditions, ensuring comfort during the hottest days of summer.

Another key feature is the user-friendly interface. The Carrier 012,50LJQ008 comes with a digital control panel that allows users to easily set their desired temperature and adjust fan speeds according to their preferences. Additionally, it offers remote control functionality, providing convenience and ease of use for homeowners and occupants alike.

The design of the Carrier 012,50LJQ008 incorporates advanced air filtration technology, including a multi-layer filter system that captures allergens and airborne particles. This not only improves indoor air quality but also contributes to the longevity of the unit by preventing dust buildup. The filters are easily accessible for cleaning and replacement, ensuring the system runs efficiently.

Durability is another critical aspect of this model. Constructed with high-quality materials, the Carrier 012,50LJQ008 is designed to withstand varying environmental conditions. Its corrosion-resistant outdoor unit ensures a longer lifespan, while comprehensive warranties provide peace of mind to users.

In summary, the Carrier 012,50LJQ008 is an exemplary air conditioning unit that combines energy efficiency, advanced technology, and user-centric features. Whether for a family home or a commercial space, its superior performance, reliability, and ease of use make it an excellent choice for maintaining optimal comfort year-round.