50QE900 Aquazone™ Water Source Heat Pump Commercial Light-Activated Programmable Thermostat

Owner’s Manual

Part Number 50QE900-220LA

CONTENTS

Page GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Thermostat Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Heat or Cool Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Thermostat Front Panel Buttons . . . . . . . . . . . . . . . . . 1 Thermostat Programming Buttons . . . . . . . . . . . . . . . 2 Set Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Programming Thermostat Schedules. . . . . . . . . . . . . 3

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 Auto-Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Light-Activated Operation . . . . . . . . . . . . . . . . . . . . . . . . 4 Two-Stage Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Clock Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Holiday Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

IMPORTANT: Read entire instructions before program- ming the thermostat.

GENERAL

Carrier’s Aquazone 7-day, commercial, programmable ther- mostats are wall-mounted, low-voltage thermostats which maintain room temperature by controlling the operation of an HVAC (heating, cooling and ventilation) system. Separate heating and cooling set points and auto-changeover capability allow occupied and unoccupied programming schedules for energy savings.

All thermostats allow up to 3 occupied and one unoccupied time/temperature setting to be programmed per 24-hour period. Each thermostat stores programs for 7 independent days. Batteries are not required. During power interruption the inter- nal NEVERLOST™ memory stores programs for an unlimited time.

IMPORTANT: The thermostat has a configurable security level. If certain functions are not available (changing set points, changing programming schedules), the thermostat security level may be configured to exclude those func- tions. Call the installer to reconfigure the security level.

A light sensor is provided on the thermostat for light activa- tion. When the sensor detects light (the space is occupied), the thermostat will enter Occupied 1 mode. If the room is dark, the thermostat will follow its programmed schedule.

CONFIGURATION

Thermostat Display — The thermostat display is locat- ed in the center of the thermostat. See Fig. 1. The following information can be displayed on the screen:

•mode (OFF, HEAT, COOL, AUTO, or PROGRAM ON)

•fan setting (FAN ON or blank)

•override indication

•room temperature

•desired temperature

•service filter indicator

•time of day

•day of the week

•schedule period (Occupied 1, 2, or 3; or Unoccupied)

•setup indicator (Programming mode)

•lock indicator

•start/stop indicator (schedule period Programming mode)

Fig. 1 — Thermostat Display

Heat or Cool Indicator — A Heat or Cool indicator is located on the bottom left cover of the thermostat. See Fig. 2. The light will be red if the thermostat is in Heating mode. The light will be green if the thermostat is in Cooling mode.

Thermostat Front Panel Buttons — The thermostat has buttons on the front cover which are used to raise or lower the desired set point and override the current program. See Fig. 2.

SET POINT BUTTONS — The UP ARROW and DOWN ARROW buttons will raise or lower the current desired tem- perature set point. If the thermostat is in AUTO mode, pressing the UP ARROW or DOWN ARROW buttons will adjust both the heating and cooling set points. Pressing the UP ARROW or DOWN ARROW buttons in Cooling mode will adjust only the cooling set points. Pressing the UP ARROW or DOWN ARROW buttons in Heating mode will adjust only the heating set points. The UP ARROW and DOWN ARROW buttons are also used in Programming mode.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

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4

PC 111

Catalog No. 535-00110

Printed in U.S.A.

Form 50QE-3SO

Pg 1

6-03

Replaces: New

Tab

5a

5a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Carrier 50QE900 owner manual Contents, General, Configuration
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50QE900 specifications

The Carrier 50QE900 is an advanced air conditioning unit designed to provide superior climate control for residential and light commercial buildings. This model is a part of Carrier’s renowned range of HVAC solutions, known for efficiency and reliability. With its innovative technology and user-friendly features, the 50QE900 ensures optimal comfort year-round.

One of the standout features of the Carrier 50QE900 is its high efficiency. This unit boasts an impressive SEER (Seasonal Energy Efficiency Ratio) rating, which signifies its energy-saving capabilities. The greater the SEER, the more efficient the unit is at cooling your space while keeping electricity costs low. This model utilizes environmentally friendly refrigerants, aligning with modern sustainability goals.

In terms of design, the Carrier 50QE900 is compact and sleek, making it suitable for various installations without compromising on aesthetics. The robust construction ensures durability, allowing it to withstand varying weather conditions while maintaining consistent performance.

The 50QE900 incorporates advanced technological features that enhance functionality and user experience. It is equipped with a smart thermostat that allows for easy temperature adjustments and scheduling through a mobile app. This connectivity fosters a responsive climate control experience, permitting users to monitor and tweak indoor conditions even when they are away from home.

Furthermore, the unit is also recognized for its quiet operation. With sound-dampening technology, the Carrier 50QE900 minimizes noise levels, creating a peaceful indoor environment. This quality is particularly beneficial for residential applications where noise sensitivity may be a concern.

Maintenance is also simplified with the Carrier 50QE900. The unit features accessible filters and components, making routine upkeep straightforward. Regular maintenance helps ensure that the unit operates efficiently over time, prolonging its lifespan and performance.

In summary, the Carrier 50QE900 combines efficiency, innovative technology, and user-friendly features into a reliable air conditioning solution. With its energy-saving performance, sleek design, and quiet operation, it stands out as a prime choice for those seeking effective climate control in a range of environments. As industries shift towards smarter and more efficient solutions, the Carrier 50QE900 remains a compelling option for modern comfort needs.
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