Specifications

ManualsBrandsCarrier ManualsConsumer electronicsCARRIER COMFORT SYSTEM 33CS

Installation, Service, and

Troubleshooting Instructions

CONTENTS

Page

GENERAL .....................................2

INSTALLATION ................................2-11

Thermostat Placement ...........................2

Wiring Requirements .............................2

VVT Relay Packs ................................4

Wiring Connections for Monitor Thermostat ...........4

Wiring Connections for VVT Monitor Applications ......4

Wiring Connections for VVT Monitor-Only Applications ..5

Indoor-Air Quality Sensor Installation ................5

Provide Power to Relay Pack or Damper Actuator ......5

CONFIGURATION ...............................12

Manual Conﬁguration ............................12

Computer Conﬁguration ..........................12

MONITOR THERMOSTAT DISPLAY ................12-15

System Status Display ...........................12

Rotating Display ................................12

Electronic Timeclock ............................15

Alternate Information Display ......................15

Display Freeze .................................15

START-UP ...................................15-17

Device Address ................................15

Device Bus Number .............................16

Device Access Security Level .....................16

Monitor Type (Scanning Control) ...................16

COMMUNICATIONS .............................18

System Scan ..................................18

Network Time Broadcast .........................18

Communication Check ...........................18

OCCUPIED MODE OPERATION ...................18,19

Occupied Set Points ............................18

Occupied Set Point Limiting .......................19

Temperature Display ............................19

UNOCCUPIED MODE OPERATION .................19,20

Unoccupied Set Points ...........................19

Occupancy Schedules ...........................19

Schedule Number ...............................20

Manual Unoccupied Override ......................20

Remote Unoccupied Override ......................20

Optimal Start ..................................20

SENSORS ...................................20-24

Zone Temperature Sensor ........................21

Zone Temperature Monitoring .....................21

Remote Room Temperature Sensor .................21

Duct Temperature Sensor .........................21

DX (Direct Expansion) Coil Temperature Sensor .......22

Outside-Air Temperature Sensor ...................22

Indoor-Air Humidity Sensor .......................23

Indoor-Air Quality Function .......................23

Fan/Filter Status Switch ..........................24

CONTROL OF HEATING AND COOLING EQUIPMENT ..25-29

Heating/Cooling Equipment Interface ................25

System Switches ...............................25

Fan Switch ....................................26

Fan Operation for Heat ...........................26

Zone Caller ...................................26

Page

System Mode ..................................26

Reference Zone ................................26

Equipment Operation ............................27

Equipment Operation With Economizer Control ........27

Optimize Staging ...............................27

System Status Display ...........................28

System Mode Reselect ...........................28

System Time Guards ............................28

Temperature Lockouts ...........................29

Heating Lockout Temperature Set Point ..............29

Cooling Lockout Temperature Set Point ..............29

Pre-Occupancy Purge ...........................29

DAMPER CONTROL ...........................29-31

Damper Interface ...............................30

Damper Modes .................................30

Damper Modulation .............................31

SUPPLEMENTAL HEAT .........................31,32

Supplemental Heat Lockout .......................31

Heating Lockout Temperature Set Point ..............31

Supplemental Heat Callers ........................31

METERING ....................................32

HVAC Usage Meter ..............................32

Override Usage Meter ...........................32

HVAC Override Usage Meter ......................32

DIAGNOSTICS ................................32-38

Error Code Display ..............................32

System (SE) Errors .............................32

Storage Failure (SF) Errors .......................35

Hardware Failure (HF) Errors ......................36

Monitor Reset .................................38

NETWORK SET UP AND CONFIGURATION ..........38-41

Network Time Broadcaster ........................38

Network Time Requester .........................39

Receive Network Time ...........................39

Broadcast Acknowledger .........................39

Global Schedule Broadcast .......................39

Daylight Savings Time ...........................39

HOLIDAY SCHEDULES ...........................41

ALARM OPTIONS ...............................41

Equipment Priority ..............................41

Communication Failure Retry Time .................41

Re-Alarm Time .................................41

Alarm Routing Control ...........................41

Alarm System Name .............................41

LOADSHED ...................................41

ALARM DESCRIPTION .........................41-45

Space Temperature Alarm (Comfort Trend) ............42

Discharge Air Temperature Alarm (Heat/Cool Mode Error) ..42

Fan Status Alarm ...............................43

Filter Status Alert ...............................43

Indoor Air Quality Status Alarm ....................44

Communication Failure Alarm .....................44

Stuck Gas Valve Alarm ...........................45

(contents continued on next page)

33CS

Variable Volume and Temperature (VVTT)

Monitor Thermostat

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. 533-343 Printed in U.S.A. Form 33CS-28SI Pg 1 3-99 Replaces: VVT-1SI

Summary of content (52 pages)

PAGE 1
33CS Variable Volume and Temperature (VVTT) Monitor Thermostat Installation, Service, and Troubleshooting Instructions CONTENTS Page GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Thermostat Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 VVT Relay Packs . . . . . . . . . . . . . . . . . . . .
PAGE 2
CONTENTS (cont) Page NETWORK ACCESSIBLE VARIABLES . . . . . . . . . . . . . . . 45 TROUBLESHOOTING PROCEDURES . . . . . . . . . . . . . . . 46-48 General Operating Problems . . . . . . . . . . . . . . . . . . . . . . 46 Equipment Operation Problems . . . . . . . . . . . . . . . . . . . . 46 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49,50 GENERAL The monitor thermostat operates in a VVTt (Variable Volume and Temperature) system.
PAGE 3
7-1/16″ 7/8″ 2″ 1-1/2″ 3-7/8″ 1-5/8″ 3/4″ FRONT VIEW SIDE VIEW Fig. 2 — Monitor Thermostat With Timeclock 5-3/8″ 7/8″ 2″ 1-1/2″ 3-7/8″ 1-5/8″ 3/4″ FRONT VIEW SIDE VIEW Fig.
PAGE 4
NOTE: Factory-installed relay packs are available for some Carrier rooftop units. Refer to the Apollo control installation instructions for information on the factory-installed Apollo control in the rooftop unit. GROUNDING GUIDELINES — It is very important that ground loops are not introduced into the system. Ground loops are eliminated by electrically connecting the shield to the equipment ground at only one point.
PAGE 5
RELAY PACK INSTALLATION — Use the following procedure to install the CHR-03, CHR-06, and CHR-06W relay packs for damper mount applications. (For details on installing the Universal Relay Pack refer to separate 33CSZRP-06 Installation Instructions.) 1. Remove the cover from the VVT damper. 2. Insert HVAC cable through the slot on the motor side of the damper. 3.
PAGE 6
Fig. 4 — Monitor Thermostat Wiring Connections Fig.
PAGE 7
LEGEND NC — Normally Closed NO — Normally Open *Cooling actuated reversing valve. †Heating actuated reversing valve. Fig.
PAGE 8
LEGEND DX — Direct Expansion *Filter Status Switch and Humidity Sensor cannot function simultaneously. Only one sensor can be wired. Fig. 7 — Damper Board Sensor Wiring TO 24 VAC POWER CONNECTOR ON ZONE DAMPER (SEE NOTE) TO RELAY CONNECTOR ON ZONE DAMPER (SEE NOTE) 7-WIRE HARNESS (PART NO. CEAS230036-06) 2-WIRE HARNESS (PART NO.
PAGE 9
TO 24 VAC POWER CONNECTOR ON ZONE DAMPER TO RELAY CONNECTOR ON ZONE DAMPER 7-WIRE HARNESS (PART NO. CEAS230036-06) CHR06W RELAY PACK LOGIC (920009) J3 1 2-WIRE HARNESS (PART NO.
PAGE 10
NOTE: All wiring is field-supplied. Fig.
PAGE 11
HEATING RV RV (NC) COOLING RV RV (NO) FAN G - FAN HEAT 2 W2 - HEAT 2 HEAT 1 W1 - HEAT 1 COOL 2 Y2 - COOL 2 COOL 1 Y1 - COOL 1 R - COMMON COMMON 24 VAC LOGIC 24 VAC LINE VOLTAGE* CHASSIS GROUND EARTH GROUND RELAY LOGIC LEGEND NC — Normally Closed NO — Normally Open *Field-supplied transformer must be 10 va or larger. Fig.
PAGE 12
CONFIGURATION Computer Configuration — To configure the moni- Configuration can be done either manually with the set point buttons on the monitor thermostat or by computer with system network access software. Refer to each specific section in this manual for detailed instructions on configuring the monitor thermostat options. Refer to the software manual for network software configuration. A special start-up category of options (category 8.0) has been designated as the start-up category.
PAGE 13
Table 1 — VVTT Monitor Thermostat Categories and Options OPTION CATEGORY 1.1 1.2 1.3 1.4 1.5 1.6 CATEGORY DESCRIPTION 1.0 SET POINTS Cooling Set Point Low Limit (F) Heating Set Point High Limit (F) Unoccupied Cooling Set Point (F) Unoccupied Heating Set Point (F) Rotating Display Fahrenheit Temperature Display 2.0 OCCUPANCY SCHEDULE Occupancy Period (1-8) Days 2.1-2.8 Start Time Stop Time 2.9 Schedule Number* 2.10 Override Time Limit (Hours) CATEGORY 3.0 DAMPER 3.1 Maximum Damper Position 3.
PAGE 14
Table 1 — VVTT Monitor Thermostat Categories and Options (cont) OPTION DESCRIPTION CATEGORY 6.0 SUPPLEMENTAL HEAT 6.1 Supplemental Heat Lockout 6.2 Supplemental Heat Callers CATEGORY 7.0 DIAGNOSTICS/METERING 7.1 Error Code Display 7.2 Communications Check 7.3 Alternate Information 7.4 Occupied Trend Demand (1/10°F) 7.5 Occupied Trend Time Limit (Minute) 7.6 HVAC Usage Meter 7.7 Override Usage Meter 7.8 HVAC Override Usage Meter 7.9 Heat Mode Error Set Point (F) 7.10 Cool Mode Error Set Point (F) 7.
PAGE 15
• • • • • • • • • • • • (4) duct temperature (5) zone damper position (6) outside-air temperature (7) outside air relative humidity (8) indoor air relative humidity (9) DX coil temperature (10) filter status (digital input) (11) fan status (digital input) (12) IAQ status (digital input) (13) number of heating callers (14) number of cooling callers (15) reference zone address The information is shown on the top half of the display screen.
PAGE 16
• as a VVT Monitor-Only Thermostat. The monitor thermostat is used in a VVT system to control the heating/cooling equipment operation based on the zone demand of the associated zone controllers. • as a VVT Construction thermostat (on a temporary basis). The monitor thermostat is used in a construction site to control the heating/cooling equipment operation based on its own zone requirements.
PAGE 17
Fig. 17 — VVTT Monitor System Configuration (Monitor Controls Damper) Fig.
PAGE 18
Refer to Table 2 for the Communication Check system designations. COMMUNICATIONS System Scan — Approximately every 20 seconds the monitor thermostat attempts to communicate with the associated zone controllers and bypass controller. Each associated device must have a device address lower than the monitor thermostat and must be within the monitor thermostat scanning range. A monitor thermostat has 32 devices that can be scanned.
PAGE 19
in the zone controlled by the monitor thermostat during the Unoccupied mode. The range of allowable temperatures is 99 to 50 F for heating and 99 to 40 F for cooling. To configure the unoccupied cooling set point, enter category 1, option 3. The left set point buttons control the unoccupied cooling set point. Press the top set point button to raise the set point. Press the bottom set point button to lower the set point.
PAGE 20
upper set point buttons to raise the time limit. Press the lower set point buttons to lower the time limit. The range is 0 to 4 hours in 1 hour increments. To disable unoccupied override, configure the time limit to 0 hours. The default value is 1 hour. Start Time — When the select button is pressed from the first option screen, the hours number will flash. The hours are modified through the left set point buttons. The AM/PM modifier will automatically switch when scrolling through the times.
PAGE 21
Zone Temperature Sensor — The monitor thermostat measures zone temperature through a solid-state temperature sensor located on the printed circuit board. See Fig. 19. The sensor measures temperature with a range of 30 to 180 F with 1/10 degree resolution. ZONE TEMPERATURE SENSOR CALIBRATION — To calibrate the zone temperature sensor, configure category 5, option 2. The temperature reading of the sensor will be displayed. Compare the reading to an accurate thermometer.
PAGE 22
When the Outside Air Temperature Sensor option is set to ON, the monitor thermostat will measure outside-air temperature and broadcast the outside-air temperature information on the network. When the Outside Air Temperature Sensor option is set to OFF, the monitor thermostat can receive outside air information broadcast from another device on the network. NOTE: A communication bus must have only one outdoor air sensor. To configure the Outside Air Temperature Sensor option, configure category 5, option 8.
PAGE 23
Indoor Air Humidity Sensor — The monitor thermostat measures relative humidity through a solid-state humidity sensor. The sensor can be located up to 500 ft from the single zone relay pack or zone damper actuator. The sensor measures zone humidity with a range of 0 to 100%. When the monitor thermostat is configured as a Monitor Only thermostat, the humidity sensor is interfaced through the single zone relay pack. See Fig. 27.
PAGE 24
LOCAL ZONE IAQ PROBLEM — When the monitor thermostat scans the bus to gather information to operate the system it also gathers the IAQ status of the associated zone controller and bypass. When a zone controller gives the monitor thermostat the Zone In IAQ flag, the monitor turns on the fan.
PAGE 25
To control the heat switch setting, configure category 4, option 22. The range is from 0 to 2. When the option is set to 0, the thermostat will follow the setting of the mechanical heat switch. When the option is set to 1, the thermostat will perform as if the heat switch is set to AUTO (regardless of the mechanical switch setting). When the option is set to 2, the thermostat will perform as if the heat switch is set to OFF (regardless of the mechanical switch setting).
PAGE 26
For a Construction monitor system, the monitor thermostat only checks its own zone demand. If the monitor thermostat is a cooling caller, system cooling mode is selected. If the monitor thermostat is a heating caller, system heating mode is selected. For a Monitor Only System, the monitor thermostat checks the zone demand of the associated zone controllers. If the majority of zone controllers are cooling callers, system cooling mode is selected.
PAGE 27
EQUIPMENT OPERATION DURING A SYSTEM COOLING MODE Outside Air Temperature Greater Than 65 F — The monitor thermostat utilizes the relay pack to energize the first stage of cooling after system cooling mode is selected. The second stage of cooling is energized, or optimized staging is followed, when the reference zone cooling demand is 2.0° F or greater. The second stage of cooling is released when demand drops below 1.0° F. The first stage of cooling is deenergized when the system cooling mode is released.
PAGE 28
• First Stage Limit. The first stage relay (H1 or C1) is deenergized. NOTE: When both first and second stage Heating or Cooling Temperature Limits are exceeded during a system mode, if the reference zone is no longer a zone caller and there are zone callers for the opposite system mode, the monitor thermostat ends the current system mode. Construction System thermostats do not perform LAT (Leaving Air Temperature) checking.
PAGE 29
When the Cooling Temperature Lockouts option is set to ON, and the outside-air temperature drops below the Cooling Lockout Temperature Set Point, the monitor thermostat will not select a system cooling mode. If the system is currently in the system cooling mode, the monitor thermostat will complete the current system mode. When either the Cooling or Heating Temperature Lockout options are set to OFF, the System Heating and Cooling Mode Lockout functions are disabled.
PAGE 30
SYSTEM MODE — When central system heating is needed, the system mode is heating. When central system cooling is needed, the system mode is cooling. If the monitor thermostat zone has a heating demand and the system is in heating mode, the zone damper is modulated in the damper heating mode. If the monitor thermostat zone has a cooling demand and the system is in cooling mode, the zone damper is modulated in the damper cooling mode.
PAGE 31
The following VVTt zone dampers require counterclockwise rotation to modulate the damper to an open position: • Model ZD Round Zone Damper • Model RD Rectangular Zone Damper Damper Modulation — The monitor thermostat modulates the zone damper depending on zone temperature, supply-air temperature, zone demand, and mode. The monitor thermostat modulates the zone damper to the Maximum Damper Position when zone demand is greater than 1.5° F or greater and duct temperature can satisfy demand.
PAGE 32
To disable the Override Usage Meter, set the option to OFF. No metering occurs. For system applications where the zone design heating load is handled by the central heating equipment, zone supplemental heat can be sized to offset the transmission losses on the perimeter during low temperature outside air conditions.
PAGE 33
The Comfort Trend Demand set point is configured in category 7, option 4. Use the left set point buttons to raise or lower the set point. The range of values is 0 to 25.5° F in 1/10° F increments. The default is 0° F. COMFORT TREND TIME LIMIT — The Comfort Trend Time Limit establishes the continuous amount of time that must elapse before the monitor thermostat can declare a Comfort Trend Error. The Comfort Trend Time Limit set point is configured from category 7, option 5.
PAGE 34
HIGH/LOW TEMPERATURE LIMIT EXCEEDED (SE11) Heating Mode — An alarm is issued when any supply air sensor in the system is above the first or second stage heating temperature limit (depending on which stages are active). Cooling Mode — An alarm is issued when any supply air sensor in the system is below the first or second stage cooling temperature limit (depending on which stages are active). Refer to the System Time Guards section on page 28 for information on setting the temperature limits.
PAGE 35
Storage Failure (SF) Errors — A Storage Failure error is an error that corresponds to invalid information. When an SF Error occurs, the monitor thermostat replaces the invalid data in memory with factory selected default values and the invalid information is not used to determine system mode. To clear an SF Error, enter the correct data at the monitor thermostat by reconfiguring the associated options. See Table 4 for a description of Storage Failure Errors.
PAGE 36
3. Check the damper actuator position to see if the traveler arm has moved past the position sensor. If the traveler arm is stuck at full open or full closed position, use the following steps to correct the problem: a. Disconnect the monitor thermostat from the wiring connector board. b. At the damper, using a flat head screw driver, turn the traveler screw (located on the stepper motor) until the traveler arm is midway between the full closed and full open positions. c. Reconnect the monitor thermostat. 4.
PAGE 37
3. Check the damper actuator position to see if the traveler arm has moved past the position sensor. If the traveler arm is stuck at full open or full closed position, use the following steps to correct the problem: a. Disconnect the monitor thermostat from the wiring connector board. b. At the damper, using a flat head screw driver, turn the traveler screw (located on the stepper motor) until the traveler arm is midway between the full closed and full open positions. c. Reconnect the monitor thermostat. 4.
PAGE 38
To check the DX coil temperature sensor: 1. Check that the DX coil temperature sensor wiring and connections to the circuit board are physically intact. Ensure the 5-conductor control wiring running between the damper actuator and the monitor thermostat is not run near AC, control, or communication bus wiring. Maintain a minimum separation of 12 in. or more between other wiring and remote room sensor wiring. 2. Check the DX coil temperature sensor calibration.
PAGE 39
Only the time broadcaster can do a daylight savings broadcast. If other monitor thermostats are on the network, and they are configured not to receive network time, these monitor thermostats will not support daylight savings time functions. DAYLIGHT SAVINGS TIME START MONTH — The Daylight Savings Time Start Month tells the monitor thermostat which month to move its internal clock forward for daylight savings time. To set the month, configure category 9, option 6.
PAGE 40
BUS 0 AA TB TR TR TR TR NRT† TR TR BA VMT-32 BC ZC ZC ZC VMT-32 BC ZC ZC SEE NOTE 5 ADDITIONAL DEVICES (SEE NOTE 5) BUS 1 TeLINK REPEATER* BRIDGE** (ADDRESS 0, 1) RNT VMT-32 TR TR TR BA BC ZC ZC ZC ADDITIONAL DEVICES (SEE NOTE 5) BUS 0 BUS 2 BRIDGE** (ADDRESS 0, 2) 40 RNT TR TR TR BA VMT-32 BC ZC ZC ZC ADDITIONAL DEVICES (SEE NOTE 5) TO UP TO 64 BUSES LEGEND AA — Alarm Acknowledger BA — Broadcast Acknowledger CCN — Carrier Comfort Network NTR — Network Time Req
PAGE 41
acceptable values is 1 to 255 minutes. The default is 30 minutes. A value of 255 disables re-alarming. HOLIDAY SCHEDULES The monitor thermostat supports holiday scheduling. Eighteen different holidays can be user-defined. Each holiday has a start date (month and day) and a duration. When a userdefined holiday occurs, the monitor thermostat follows the holiday schedule defined in the occupancy periods. To define a holiday, advance to category 10. Each option (holiday schedule) has 2 screens.
PAGE 42
CLEARING THE ALARM FROM THE THERMOSTAT — Space temperature alarms can be cleared or "erased" from the system in three ways: • Cycle power to the thermostat OFF, then ON. • Reset the Unit Thermostat. Initiate a reset by switching the Unit Reset option to the ON (Category 7, Option 11). • Switch the configuration value for Comfort Trend Demand or the Comfort Trend Time Limit to zero, then back to an acceptable range (category 7, options 4 or 5).
PAGE 43
CONFIGURATION EXAMPLE — The Fan Status Switch option (category 5, option 10) is set to ON. At the start of a cooling mode, the fan relay is switched on by the monitor thermostat. Fan operation is initiated and the fan has 30 seconds to generate sufficient airflow to close the normally open fan-status flow switch. If the sensor contacts are closed within 30 seconds, the system operates normally and no Fan Status alarm is generated.
PAGE 44
When the monitor thermostat receives an IAQ alarm from a bypass controller (or itself in monitor-only mode), it sends all the zone controllers the system IAQ alarm. At the end of the 5 to 30 minutes, if the CO2 level still exceeds the set point, the indoor fan will stay energized. The economizer damper opens and the zone damper moves to the full or maximum open position. This forces fresh outside air to enter the zone with deficient IAQ.
PAGE 45
Table 13 — Monitor Thermostat Point Display Table Stuck Gas Valve Alarm — Refer to Table 12 for Stuck Gas Valve Alarm specifications.
PAGE 46
• The monitor thermostat ribbon cable is improperly installed or defective. • The monitor thermostat wiring connector board is defective. Refer to the Monitor Thermostat Wiring section for ribbon cable and wiring connector block troubleshooting information. • The monitor thermostat, damper actuator, or single zone relay pack is defective.
PAGE 47
5. 6. 7. 8. 2. Set the Alternate Information function (category 7, option 3) of the monitor thermostat to ON. Check the monitor thermostat display for a flashing HEAT or COOL annunciator. A blinking annunciator indicates a supply air temperature problem. ANNUNCIATOR DISPLAYED BUT EQUIPMENT NOT ENERGIZED — The monitor thermostat HEAT or COOL annunciator is ON, but the heating or cooling equipment is not energized. Check the monitor thermostat Auxiliary Relay option (category 4, option 9).
PAGE 48
Fig.
PAGE 49
INDEX Alarm Description, 41 Alarm Options, 41 Alarm Routing Control, 41 Alarm System Name, 41 Alternate Information Display, 15 Annunciator Displayed But Equipment Not Energized, 47 Auxiliary Relay, 27 Blinking Display, 46 Blinking Heat or Cool Annunciator, 46 Broadcast Acknowledger, 39 Cannot Detect Closed Damper, 36 Cannot Detect Indoor Fan Off, 34 Cannot Detect Indoor Fan On, 33 Cannot Detect Open Damper, 36 Comfort Trend Demand Set Point, 33 Comfort Trend Error, 33 Comfort Trend Time Limit, 33 Communica
PAGE 50
INDEX (cont) Provide Power to Relay Pack or Damper Actuator, 5 Re-Alarm Time, 41 Receive Network Time, 39 Reference Zone, 26 Relay Pack Installation, 5 Remote Room Sensor Out of Range, 37 Remote Room Temperature Sensor, 21 Remote Room Temperature Sensor Calibration, 21 Remote Unoccupied Override, 20 Rotating Display, 12 Schedule Number, 20 Sensors, 20 Set-Back Override, 21 Space Temperature Alarm (Comfort Trend), 42 Start-Up, 15 Storage Failure (SF) Errors, 35 Stuck Gas Valve, 34 Stuck Gas Valve Alarm, 45 S
PAGE 51
PAGE 52
Copyright 1999 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 111 Catalog No. 533-343 Printed in U.S.A.