Carrier 50XT Product Data
Carrier 50XT Product Data

Carrier 50XT Product Data

15 seer single-packaged heat pump system with puron (r-410a) refrigerant single phase 2-5 nominal tons
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50XT
Infinity 15t SEER Single---Packaged Heat Pump System
with Puronr (R---410A) Refrigerant
Single Phase
2---5 Nominal Tons (Sizes 024---060)
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.

Product Data

Comfort Heat Pump System with IdealHumidityt featuring
Infinityt 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
A05307
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
low- -ambient kit is not required.
Infinityt 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
1
®
II

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Table of Contents
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Summary of Contents for Carrier 50XT

  • Page 1: Product Data

    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.
  • Page 2 Short- -cycling protection for the compressor is incorporated into our Infinity heat pump/air conditioner dual capacity control board ensuring a five- -minute delay before restarting compressor after shutdown for any reason.
  • Page 3: Model Number Nomenclature

    MODEL NUMBER NOMENCLATURE 50XT Type of Unit 50XT - Packaged Electric Heat Pump Nominal Cooling Capacity 024 - 2 Ton 030 - 2.5 Ton 036 - 3 Ton 042 - 3.5 Ton 048 - 4 Ton 060 - 5 Ton...
  • Page 4: Physical Data

    450 ft/minute for high ---capacity type. Air filter pressure drop for non ---standard filters must not exceed 0.08 IN. WC. ISO 9001:2000 REGISTERED A- -WEIGHTED SOUND POWER LEVEL (dBA) STANDARD MODEL 50XT RATING (dBA) NOTE: Tested in accordance with ARI Standard 270 ---95 (not listed in ARI). 2 ---1/2 Two ---Stage Scroll 10.3...
  • Page 5: Options And Accessories

    Compressor hard start kit providing additional starting torque on single phase units and prolongs compressor motor life. USED WITH SIZES STAGES 208/240 — SINGLE PHASE (60 Hz) delivers Carrier’s patented IdealHumidity provides anti- -floodback protection for assists compressor start- -up by...
  • Page 6 FILTER RACK BEND FLANGE AT 90°-SCREW TO DIVIDER WITH 1-IN. SCREW TOP FILTER RACK EVAPORATOR COIL BOTTOM FILTER RACK MANUAL OUTSIDE AIR DAMPER REPLACEMENT PANEL MANUAL OUTSIDE AIR HOOD DAMPER BLADE...
  • Page 9 HVAC unit base Scre w Gask eting (NO TE A) inner flange* *Gask eting outer flange Wood nailer* Flashing field supplied Insulation (field supplied) Roofing material field supplied Ductwork field supplied Cant str ip field supplied Roof *Provided with roof curb Roof Curb for Small Cabinet Note A: When unit mounting scre w is used, retainer bra cke t must also be used.
  • Page 10: Selection Procedure

    (16,810 + 22,532). 1200 CFM Select unit that corresponds to power source available 230- -1- -60 The Electrical Data table shows that the unit is designed to operate at 208/230- -1- -60. A06296 RIGGING WT MODEL 50XT--024 50XT--030 50XT--036 50XT--042 50XT--048 50XT--060...
  • Page 29 PERFORMANCE DATA (CONT) Multiplication Factors Heater kW Voltage Distribution Rating V/3/60 LEGEND BF— Bypass Factor edb— Entering Dry- -Bulb Ewb— Entering Wet- -Bulb kW — Total Unit Power Input ldb— Leaving Dry- -Bulb lwb— Leaving Wet- -Bulb SHC— Sensible Heat Capacity (1000 Btuh) TC —...
  • Page 30 UNIT SYSTEM SETTING SIZE COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY Wet coil air delivery - - high stage UNIT SYSTEM SETTING SIZE COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default) EFFICIENCY COMFORT (Default)
  • Page 31 ROOF-MOUNTING CURB SUPPLY-AIR FLEXIBLE DUCT CONCENTRIC DIFFUSER BOX (FIELD-SUPPLIED) RETURN TOP COVER ROOF RETURN-AIR FLEXIBLE DUCT CEILING USER INTERFACE *NEC - NATIONAL ELECTRICAL CODE C00023 FROM POWER SOURCE DISCONNECT PER NEC* A06279...
  • Page 32 Condensate trap — A 2- -in. (51 mm) condensate trap must be field supplied. 1” (25mm) MIN. Ductwork — Secure downflow discharge ductwork to roof curb. For horizontal discharge applications, attach ductwork to unit with flanges. Based on Entering Indoor Air of 70 Deg. F and Rated CFM with factory- -installed inserts in the downflow openings.
  • Page 33 VOLTAGE RANGE UNIT SIZE V- -PH- -HZ 208/230--1--60 208/230--1--60 208/230--1--60 208/230--1--60 208/230--1--60 208/230--1--60 *Heater capacity (kW) based on heater voltage of 208v & 240v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accord- ingly.
  • Page 34 TYPICAL WIRING SCHEMATIC — 230- -1- -60 A08201...
  • Page 35 Sequence of Operation The 50XT packaged heat pump is designed for installation with a communicating UI. This unit will not respond to commands provided by a common thermostat except under certain emergency situations. The UI uses temperature, humidity and other data supplied from indoor and outdoor system components to control heating or cooling system for optimum comfort.
  • Page 36 MODEL NUMBER: 50XT PART I - - GENERAL SYSTEM DESCRIPTION Outdoor rooftop or ground mounted heat pump unit utilizing a hermetic, 2- -stage scroll compressor for heating and cooling duty and optional electric heating. Unit shall discharge supply air ver- tically or horizontally as shown on contract drawings.
  • Page 37 -round ven- tilation. 4. Infinityt User Interface: To provide for two- -stage heat pump heating, two- -stage cool- ing, and electric (auxiliary) heat, in addition to manual or au- tomatic changeover and indoor fan control.
  • Page 38 Copyright 2008 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Printed in U.S.A. Edition Date: 06/08 Catalog No: 50XT ---04PD...

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