Carrier 50XT- Manual

1

50XT

Infinity 15

t

SEER Single --- Packaged Heat Pump System

with Puron

r

(R--- 410A) Refrigerant

Single Phase

2 --- 5 Nominal Tons (Sizes 024 --- 060)

Product Data

A05307

Fig. 1 -- Unit 50XT

Single--Packaged Products with energy--saving features and
Puron

®

refrigerant.

S

Up to 15.5 SEER

S

Up to 8.0 HSPF

S

Up to 12 EER at 95

°

F (35

°

C) OD

S

Low Sound Levels

S

Variable--Speed Blower (Standard)

S

Factory--Installed TXV

S

Two--stage cooling and heat pump operation

FEATURES/BENEFITS

One--piece Heat Pump unit with optional electric heater, low
installation cost, dependable performance and easy maintenance.

Efficient operation

High--efficiency design

with SEERs (Seasonal Energy Efficiency

Ratio) of up to 15.5.

Puron

®

environmentally--sound refrigerant

is Carrier’s unique

refrigerant designed to help protect the environment. Puron is an
HFC refrigerant which does not contain chlorine that can harm the

ozone layer. Puron refrigerant is in service in millions of systems

proving highly reliable, environmentally sound performance.

Comfort Heat Pump System with IdealHumidity

t

featuring

Infinity

t

control variable--speed blower motor

and two--stage

cooling and heating that provides greater comfort, humidity
control, and energy efficiency.

Variable--speed blower motors

provide better comfort and energy

efficiency. You can expect up to 30 times better dehumidification;
economical constant airflow which provides improved indoor air

quality and more even temperatures from room to room; and
reduced indoor noise due to lower air velocity. In addition, you’ll

realize improved installation flexibility with 3 different airflow

choices for best overall comfort.

Easy installation

Factory--assembled package is a compact, fully self--contained heat

pump unit that is pre--wired, pre--piped, and pre--charged for
minimum installation expense. 50XT units are available in a

variety of standard capacity ranges. Units install easily on a rooftop

or at ground level.

Durable, dependable components

Compressors

have two stages of cooling and heating and are

designed for high efficiency. Each compressor is hermetically
sealed against contamination to help promote longer life and

dependable operation. Vibration isolation provides quiet operation.

Compressors have internal high--pressure and overcurrent
protection.

Convertible duct configuration

Unit is designed for easy use in either downflow or horizontal
applications. Each unit is easily converted from horizontal to

downflow with two duct covers (available as an accessory).

Downflow operation is easily provided in the field to allow vertical
ductwork connections. The basepan utilizes knockout style seals

on the bottom openings to ensure a positive seal in the horizontal
airflow mode.

Direct--drive, variable--speed blower motor

is standard on all

50XT models.

Direct--drive, PSC condenser fan motors

are designed to help

reduce energy consumption and provide for cooling operation
down to 55

°

F (12.7

°

C) outdoor temperature. Low--ambient

cooling is available below 55

°

F (12.7

°

C) when low--ambient

cooling is enabled in the User Interace (UI). Motormaster

®

II

low--ambient kit is not required.

Infinity

t

User Interface

is designed to work as a system with

Carrier’s single--packaged product.

Refrigerant system

is designed to provide dependability. Liquid

refrigerant filter driers are used to promote clean, unrestricted

operation. Each unit leaves the factory with a full Puron refrigerant

charge. Refrigerant service connections make checking operating
pressures easier.

Indoor and outdoor coils

are computer designed for optimum

heat transfer and cooling efficiency. The indoor coil is fabricated

from copper tube and aluminum fins and is located inside the unit