Product Data 33CS Carrier Comfort System Variable Volume and Temperature (VVTT) The VVT Comfort System provides the following features and benefits: • 365-day scheduling, daylight savings compensation, and 8 daily program periods • Quick and easy start-up wiring • System control capability • New adjustable alarm limit capability • An Indoor Air Quality (IAQ) high limit CO2 sensor is available • Enhanced equipment coordination Features/Benefits The newest generation of VVT System products combines the ind
Holiday scheduling for up to 18 holiday schedules with multiple days per schedule allows flexibility and adaptability to the needs of each application. Daylight savings and leap year scheduling is also included. External timeclock control can be used with the VVTt Comfort System thermostat to allow an external clock control of the occupied and unoccupied schedules.
Features/Benefits (cont) Leaving-air temperature (LAT) algorithm monitors the leaving- air temperature to ensure safe and proper operation of the HVAC equipment. The LAT is constantly monitored and system adjustments are made to maintain LAT requirements. Time Guardt compressor protection prevents excessive equipment cycling by requiring a minimum down time after a heating or cooling cycle and a minimum heating and cooling run time.
Accessories Outdoor-air sensor — The outdoor-air sensor reads temNetwork access module — Allows network access via peratures between 0 and 150 F and is used to report the computer at the site or remotely through the use of a mooutdoor-air temperature to the communication bus. The indem. The Carrier Network Access software can modify and formation can be used to lockout heating or cooling modes read information of devices residing on the network. when the temperature is not within user configured limits.
Base unit dimensions VVTt MONITOR THERMOSTAT WITH TIMECLOCK 7-1/16″ 7/8″ 2″ 1-1/2″ 3-7/8″ 1-5/8″ 3/4″ FRONT VIEW SIDE VIEW VVT MONITOR THERMOSTAT WITHOUT TIMECLOCK, OR ZONE CONTROLLER, BYPASS CONTROLLER 5-3/8″ 7/8″ 2″ 1-1/2″ 3-7/8″ 1-5/8″ 3/4″ FRONT VIEW SIDE VIEW 5
Accessory dimensions MODEL RD — RECTANGULAR ZONE DAMPER ACTUATOR DIMENSIONS (in.) MODEL RD0810 RD0814 RD0818 RD0824 A 101⁄4 101⁄4 101⁄4 101⁄4 B 17 21 25 31 C 8 8 8 8 D 10 14 18 24 MODEL ZD — ROUND ZONE DAMPER ACTUATOR DIMENSIONS (in.
→ UNIT CONTROL RELAY PACKS (Monitor-Only Mode Applications) MODEL TSR-01 MOUNTED IN RE (REMOTE ENCLOSURE) WITH REVERSING VALVE CONTROL AND INDOOR DUTY RATED MODEL 33CS UCE-06 MOUNTED IN RE (REMOTE ENCLOSURE) WITH ECONOMIZER CONTROL AND OUTDOOR DUTY RATED UNIT CONTROL RELAY PACKS (VVT® Monitor Mode Applications) MODEL CHR-06W WITH ECONOMIZER CONTROL AND INDOOR DUTY RATED DIMENSIONS (in.) MODEL CHR-06W A 43⁄4 B 3 MODEL CHR-06 WITH REVERSING VALVE CONTROL AND INDOOR DUTY RATED DIMENSIONS (in.
Component selection procedure Proper selection of the monitor thermostat is important to meet job requirements. Selection of the monitor thermostat and other components is based on the following criteria: I Zone Capacity Monitor thermostats are available in 3 capacities: 4, 16, or 32 zones. A system with 4 zones would require an 33CSVM(T)-04 monitor thermostat which would control one zone and 3 zone controllers (33CSZC--01) for the remaining zones.
Performance data APPLICATION NC* LEVELS (RADIATED SOUND) — ROUND ZONE DAMPERS DAMPER CFM 160 200 ZD-06 240 360 280 350 ZD-08 420 630 440 514 ZD-10 584 659 990 630 700 770 ZD-12 860 950 1425 STATIC PRESSURE (in. wg) 0.02 0.52 1.00 0.04 0.50 1.00 0.06 0.50 1.00 0.10 0.50 1.00 0.03 0.50 1.00 0.04 0.50 1.00 0.06 0.50 1.00 0.10 0.50 1.00 0.01 0.50 1.00 0.02 0.50 1.00 0.03 0.50 1.00 0.04 0.50 1.00 0.09 0.50 1.00 0.01 0.50 1.00 0.03 0.50 1.00 0.02 0.50 1.00 0.04 0.50 1.00 0.05 0.50 1.00 0.11 0.50 1.
Performance data (cont) APPLICATION NC* LEVELS (RADIATED SOUND) — ROUND ZONE DAMPERS (cont) DAMPER CFM 852 976 1074 ZD-14 1175 1275 1910 1125 1175 1275 1376 ZD-16 1475 1574 1676 2512 STATIC PRESSURE (in. wg) 0.02 0.50 1.00 0.01 0.50 1.00 0.01 0.50 1.00 0.01 0.50 1.00 0.06 0.50 1.00 0.13 0.50 1.00 0.02 0.50 1.00 0.04 0.50 1.00 0.05 0.50 1.00 0.05 0.50 1.00 0.06 0.50 1.00 0.07 0.50 1.00 0.03 0.50 1.00 0.18 0.50 1.00 *Noise Criteria.
APPLICATION NC* LEVELS (RADIATED SOUND) — RECTANGULAR ZONE DAMPERS DAMPER CFM 410 509 RD0810 610 914 561 625 RD0814 725 825 1237 725 775 874 RD0818 974 1075 1611 925 974 1075 RD0824 1175 1275 1375 2062 STATIC PRESSURE (in. wg) 0.01 0.50 1.00 0.03 0.50 1.00 0.07 0.50 1.00 0.16 0.50 1.00 0.02 0.50 1.00 0.02 0.50 1.00 0.03 0.50 1.00 0.05 0.50 1.00 0.11 0.50 1.00 0.01 0.50 1.00 0.01 0.50 1.00 0.02 0.50 1.00 0.02 0.50 1.00 0.03 0.50 1.00 0.06 0.50 1.00 0.01 0.50 1.00 0.01 0.50 1.00 0.01 0.50 1.00 0.02 0.
Application data main bus) has a bus/element address of 0,75, the thermostats on the bridge would have a bus address of 75. Branches may be added to separate various systems or to reduce the communication traffic on the main bus. The VVT system monitor thermostats are available in 3 different zone capacity models which allow it to communicate with 4, 16, or 32 system components.
Damper positions The dampers provide for full-blade modulation from fullyclosed to fully-open. This is designated as position 0 to position 15. Because individual zone requirements differ from one building to another, the system has been equipped to provide minimum and maximum damper positions. Maximum damper position changes the fully-open damper position to a maximum damper position which can be less than or equal to the maximum (which is 15).
Application data (cont) The bypass controller has an IAQ sensor configuration If the outdoor humidity is above the user-configured set option which is used if an IAQ sensor is attached to the bypoint, the system will not energize the economizer relay. pass controller for system IAQ. The outdoor humidity must be read and broadcast by another device on the communication bus (such as a Comfort The bypass controller IAQ pressure set point is mainController).
→ To retrofit an application with Carrier Comfort System controls, the unit controller is replaced with a CHR-06 or CHR-06W relay pack. The control relay pack is wired to the terminal strip of the unit and provides cooling, heating, fan, reversing valve, or economizer relay control for the unit. A monitor thermostat must be wired to each relay pack.
Application data (cont) Alarm configuration and application This section describes the major alarm types that are available within the system. The alarm types are: space temperature alarm (Comfort Trend), discharge air temperature alarm, fan status alarm, filter status alert, IAQ status alarm, communication failure alarm, and stuck gas valve alarm.
alarm is generated. The thermostat display will not indicate ‘‘fan’’ until fan operation is verified by the fan-status flow switch. The alarm will cause the system to shut down. No cooling, heating, or ventilation is available until a reset of the system is initiated. In a heat mode, the same sequence is followed, except that the delay time is increased to 120 seconds. If the Fan Operation for Heat option is configured OFF, no alarm is generated in the heat mode.
Application data (cont) Indoor-air quality status alarm — Refer to the IAQ (indoor-air quality) Status Alarm table for specifications. Communication failure alarm — Refer to the Communication Failure Alarm table for specifications.
Operation The Stuck Gas Valve sequence is used to allow the system to properly react to a failure mode of the HVAC unit when the gas valve becomes stuck in the open position. When this condition exists, the unit is unable to shut off the heat. To minimize this problem, the internal limit switch trips causing the indoor fan to turn on and remain on until the gas is manually shut off and the heat exchanger cools to normal temperatures.
Guide specifications Multiple Zone HVAC Control System Model Number: 33CSVMT (VVTt Monitor Thermostat with Timeclock) 33CSVM (VVT Monitor Thermostat without Timeclock) 33CSZC (Zone Controller) 33CSBC (Bypass Controller) Part 1 – General 1.01 SYSTEM DESCRIPTION The system shall consist of a multiple zone capacity programmable, communicating monitor thermostat, with multiple zone controllers, and a bypass controller. The system shall also include a complete array of sensors and input components.
9. The system shall provide adjustable minimum run times during both heat and cool modes. 10. System shall have the capability to open and hold open all associated zone dampers in the event of a unit gas valve becoming stuck in the open position. 11. The monitor thermostat shall be capable of receiving and broadcasting both humidity and outside-air temperature information to the network communication bus. 12.
Guide specifications (cont) E. System Coordination Capabilities 1. VVTt system shall include adjustable mode demand to indicate the minimum number of zones required to initiate a system heating or cooling mode. 2. VVT monitor thermostats shall have a communication range of either 4, 16, or 32 to scan the system zone controllers and a bypass controller. 3. VVT system shall have the ability to perform a system communication check to identify the zone controllers and bypass controller.
H. Each Zone Damper shall include: 1. A motorized damper assembly constructed of 24 gage galvanized iron with blade of 20 gage. 2. Blade operation providing full modulation from open to closed position. 3. The ability to operate in a master/slave arrangement, where the master damper is operated by the zone controller. The master damper shall have the capability to have up to 3 dampers tracking its position. The slave dampers shall modulate to the same position as the master damper. 4.
Carrier Corporation • Syracuse, New York 13221 10-95 397 Manufacturer reserve the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Page 24 Catalog No. 809-243 Printed in U.S.A.
