Carrier COMFORT SYSTEM 33CS

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A Guide To Operating

Your VVT System

NOTE TO INSTALLER

This manual should be left with the equipment owner.

GENERAL

This manual will assist you in using your Carrier Comfort

System thermostat. There are 2 basic types of thermostats

that you may encounter. They are called the monitor ther-

mostat and the zone controller.

The monitor thermostat can be identiﬁed by the system

switches (FAN, HEAT, COOL) which are located along the

bottom edge of the front cover. The monitor thermostat can

be equipped with or without a timeclock. The timeclock dis-

play is located in the upper right corner of the monitor ther-

mostat. The monitor thermostat display is located in the up-

per left corner. The set point and programming buttons are

located around the display.

The zone controller does not have system switches or a

timeclock. The zone controller display is located in the up-

per left corner of the zone controller. The set point and pro-

gramming buttons are located around the display.

There are three typical operations you may perform on

your VVT (variable volume and temperature) system

thermostat:

• change set points for heating and cooling

• override the unoccupied schedule

• change occupancy schedules

NOTE: Your ability to perform these functions may be lim-

ited by the security access level function which is conﬁg-

ured by the installer. If ‘‘access denied’’ is shown on the dis-

play screen, you are not allowed to access that function.

The monitor thermostat and zone controller are part of a

VVT system. The VVT system allows a single-zone heating/

cooling unit to operate as a multiple-zone system. The con-

ditioned space is divided into zones. Each comfort zone is

monitored by a zone controller. The monitor thermostat moni-

tors the operation of its own zone and of each associated

zone controller and determines system operation from in-

formation received from each device that it controls.

Monitor Thermostat With Timeclock

Zone Controller

33CS

Carrier Comfort System

VVTT System

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

Book 1 4

Tab 11a 13a

PC 111 Catalog No. 809-247 Printed in U.S.A. Form VVT-2SO Pg 1 10-95 Replaces: New

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Summary

General System Overview

Monitor Thermostat Identification

Identifies the monitor thermostat by system switches and display location.

Zone Controller Identification

Identifies the zone controller by its lack of system switches or timeclock.

VVT System Functionality

Explains how VVT systems use zone controllers and a monitor thermostat for zoned control.

System Operation and Controls

Electronic Timeclock Setup

Instructions for setting the clock on the monitor thermostat.

Monitor Thermostat System Switches

Describes the FAN, HEAT, and COOL switches and their functions.

System Display Information

Explains the display window for set points and system status.

Adjusting Set Points

Details how to adjust heating and cooling set points using thermostat buttons.

Operating Mode Management

Covers occupied, unoccupied, and override modes for energy conservation.

Occupancy Schedule Programming

Configuring Occupancy Schedules

Provides step-by-step instructions to program the 7-day schedule.