Symbols - Std 134

ASHRAE STANDARDASHRAE STANDARD

American Society of Heating, Refrigeratingand Air-Conditioning Engineers, Inc.

1791 Tullie Circle NE, Atlanta, GA 30329www.ashrae.org

Graphic Symbols forHeating, Ventilating,Air-Conditioning, andRefrigerating Systems

ANSI/ASHRAE Standard 134-2005

Approved by the ASHRAE Standards Committee on February 9, 2005; by the ASHRAE Board of Directors onFebruary 10, 2005; and by the American National Standards Institute on February 10, 2005.

This standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which theStandards Committee has established a documented program for regular publication of addenda or revisions,including procedures for timely, documented, consensus action on requests for change to any part of the stan-dard. The change submittal form, instructions, and deadlines may be obtained in electronic form from the ASHRAEWeb site, http://www.ashrae.org, or in paper form from the Manager of Standards. The latest edition of an ASHRAEStandard may be purchased from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305.E-mail: [email protected]. Fax: 404-321-5478. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in U.S. and Canada).

© Copyright 2005 ASHRAE, Inc.

ISSN 1041-2336

THIS DOCUMENT MAY BE COPIED AND DISTRIBUTED ONLY FOR HANDBOOK DEVELOPMENT

BY HANDBOOK SUBCOMMITTEE MEMBERS OF TC1.4

Bob Levi

Highlight

CONTENTS

ANSI/ASHRAE Standard 134-2005Graphic Symbols for Heating, Ventilating, Air-Conditioning, and Refrigerating Systems

SECTION PAGE

4 Symbols

Table 2-1 Linecodes..................................................................................................................................... 42

Table 2-3 Valves .......................................................................................................................................... 51

Table 3-1 Thermostats & Controllers ........................................................................................................... 63

Table 3-2 Sensors & Transmitters................................................................................................................ 67

Table 3-3 Actuators ...................................................................................................................................... 70

Table 3-4 Auxiliary Devices.......................................................................................................................... 71

Table 3-5 Accessories.................................................................................................................................. 75

Table 3-6 Lines............................................................................................................................................. 76

Table 4 Equipment Symbols ........................................................................................................................ 77

NOTE: THE RIGHT HAND COLUMN OF EACH SYMBOLS PAGE IS LABELED "FILENAME".

THE FILENAME, WHICH IS FOR REFERENCING PURPOSES, GENERALLY FOLLOWS THE CSI

NUMBERING SYSTEM

42 ANSI/ASHRAE STANDARD 134-2005

PIPING SYMBOLS

TABLE 2-1 LINECODES

SYMBOL DESCRIPTION FILENAME

PIPING SERVICE

SEE EXAMPLES, PAGES 44-49

P15010.001

PIPING SERVICE, SUPPLY P15010.002

PIPING SERVICE, RETURN P15010.003

PIPING SERVICE WITH

DETAIL INFORMATION

P15010.004

DASHED LINE FOR HIDDEN OR

UNDERGROUND PIPING WITH

DETAIL

P15010.005

PIPING SERVICE, EXISTING P15010.006

VENT P15010.007

PIPING, HEAT TRACED P15010.008

ANSI/ASHRAE STANDARD 134-2005 43-

PIPING SYMBOLS

TABLE 2-1 LINECODES

continued


PIPING PITCH (%, MM/M OR IN/FT)

P15010.009

PIPING PITCH (%, MM/M OR IN/FT)

(ALTERNATE)

P15010.010

PIPING FLOW DIRECTION P15010.011


PIPING SYMBOLS

TABLE 2-1 LINECODES

continued

PIPING SERVICE NAMES DESCRIPTION FILENAME

DOMESTIC COLD WATER P15411.001

P15411.002

DOMESTIC HOT WATER P15411.003

P15411.004

DOMESTIC HOT WATER RETURN P15411.005

P15411.006

SANITARY WASTE P15420.001

ACID WASTE P15420.002


PIPING SYMBOLS

TABLE 2-1 LINECODES

continued


ACID VENT

P15420.003

STORM DRAIN P15420.004

COMPRESSED AIR

WITH DETAIL INFORMATION

(EXAMPLES: PLANT, DRY, PURE, ETC.)

P15481.001

VACUUM SERVICE P15481.002

FUEL OIL WITH DETAIL INFORMATION

(EXAMPLES: SUPPLY, RETURN, FILL, VENT)

P15484.001

GAS P15488.001


PIPING SYMBOLS

TABLE 2-1 LINECODES

continued


HOT WATER SUPPLY (HEATING) P15512.001

HOT WATER RETURN (HEATING) P15512.002

CHILLED WATER SUPPLY P15512.003

CHILLED WATER RETURN P15512.004

DRAINP15512.005

DUAL TEMPERATURE SUPPLY

( HOT OR CHILLED WATER )

P15512.006

DUAL TEMPERATURE RETURN

( HOT OR CHILLED WATER )

P15512.007


PIPING SYMBOLS

TABLE 2-1 LINECODES

continued


GLYCOL SUPPLY P15512.008

GLYCOL RETURN P15512.009

CONDENSER WATER SUPPLY P15512.010

CONDENSER WATER RETURN P15512.011

COOLING TOWER WATER SUPPLY P15512.012

COOLING TOWER WATER RETURN P15512.013

HEAT PUMP WATER SUPPLY P15512.014

HEAT PUMP WATER RETURN P15512.015

NON-POTABLE WATER P15512.016


PIPING SYMBOLS

TABLE 2-1 LINECODES

continued


STEAM WITH PRESSURE INDICATED

(kPa OR PSIG)

P15520.001

HIGH PRESSURE STEAM P15520.002

MEDIUM PRESSURE STEAM P15520.003

LOW PRESSURE STEAM P15520.004

CLEAN MEDIUM PRESSURE STEAM P15520.005

CLEAN LOW PRESSURE STEAM P15520.006

HIGH PRESSURE STEAM CONDENSATE P15520.007

MEDIUM PRESSURE STEAM CONDENSATE P15520.008

LOW PRESSURE STEAM CONDENSATE P15520.009


PIPING SYMBOLS

TABLE 2-1 LINECODES

concluded


PUMPED CONDENSATE P15520.010

BOILER BLOW DOWN

P15520.011

BOILER FEED WATER P15520.012

REFRIGERANT DISCHARGE (HOT GAS) P15535.001

REFRIGERANT SUCTION P15535.002

REFRIGERANT LIQUID P15535.003

REFRIGERANT LIQUID OVERFEED RETURN P15535.004


PIPING SYMBOLS

TABLE 2-3 VALVES


GATE VALVE P15100.001

BALL VALVE P15100.002

BUTTERFLY VALVE P15100.003

GLOBE VALVE P15100.004

ANGLE (GLOBE) VALVE P15100.005

PLUG VALVE P15100.006

PINCH VALVE P15100.007

THREE-WAY VALVE P15100.008

NEEDLE VALVE P15100.009


PIPING SYMBOLS

TABLE 2-3 VALVES

continued


SHUTOFF COCK P15100.010

CHECK VALVE

P15100.011

CHECK VALVE, SPRING LOADED P15100.012

MULTI-PURPOSE VALVE

(SHUTOFF, BALANCING AND CHECK)

P15100.013

ANGLE MULTI-PURPOSE VALVE

(SHUTOFF, BALANCING AND CHECK)

P15100.014

ANGLE STOP AND CHECK VALVE P15100.015

FLOW MEASURING AND BALANCING

VALVE

P15100.016

DIFFERENTIAL PRESSURE-REDUCING

REGULATOR

P15100.017

PRESSURE-REDUCING REGULATOR P15100.018


PIPING SYMBOLS

TABLE 2-3 VALVES

continued


PRESSURE REGULATOR P15100.019

SAFETY OR RELIEF VALVE

P15100.020

FOOT VALVE P15100.021

QUICK OPENING VALVE

(USED FOR BLOW DOWN)

P15100.022

QUICK CLOSING VALVE P15100.023

HOSE BIBB VALVE P15100.024

GLOBE VALVE, ACTUATOR WITH

CAPILLARY TUBE AND BULB

P15100.025

REFRIGERANT THERMOSTATIC EXPANSION

VALVE

P15100.026

REFRIGERANT LOWSIDE FLOAT VALVE

P15100.027


PIPING SYMBOLS

TABLE 2-3 VALVES

continued


REFRIGERANT LIQUID DRAIN VALVE P15100.028

GENERAL SYMBOL FOR SPECIAL VALVES P15100.029

SPECIAL VALVE WITH TAG NUMBER

P15100.030

REDUCED PRESSURE ZONE

BACKFLOW PREVENTER

P15100.031

DOUBLE CHECK BACKFLOW PREVENTER P15100.032

VACUUM BREAKER P15100.033

FLOW REGULATOR & FLOW LIMITING

VALVE

P15100.034

INVERTED BUCKET STEAM TRAP P15100.035

FLOAT & THERMOSTATIC STEAM TRAP P15100.036

THERMOSTATIC STEAM TRAP,

BIMETALLIC AND BELLOWS

P15100.037


PIPING SYMBOLS

TABLE 2-3 VALVES

concluded


THERMODYNAMIC (DISK) STEAM TRAP P15100.038

VARIABLE ORIFICE (PISTON) STEAM TRAP

P15100.039

SIGHT GLASS, FLOW P15100.040

FIXED ORIFICE STEAM TRAP P15100.041


CONTROL SYMBOLS

TABLE 3-1 THERMOSTATS & CONTROLLERS

SYMBOL DEFINITION

AND

BASIC CONSTRUCTION


THERMOSTAT, WALL MOUNTED C15970.001

THERMOSTAT, DUCT MOUNTED,

AVERAGING

C15970.002

THERMOSTAT, REMOTE BULB C15970.003

THERMOSTAT, REMOTE BULB IN WELL C15970.004

THERMOSTAT, DUCT MOUNTED,

LOW LIMIT, MANUALLY RESET

C15970.005

THERMOSTAT, HIGH LIMIT

(FIRE PROTECTION), MANUALLY RESET

C15970.006

THERMOSTAT, NIGHT C15970.007

THERMOSTAT, WET BULB C15970.008


CONTROL SYMBOLS


continued


THERMOSTAT, DEW POINT C15970.009

PIPE THERMOSTAT, WELL MOUNTED C15970.010

PIPE THERMOSTAT, STRAP-ON (SURFACE) C15970.011

CONTROLLER, HUMIDITY, WALL MOUNTED C15970.012

CONTROLLER, HUMIDITY, DUCT MOUNTED C15970.013

CONTROLLER, TEMPERATURE & HUMIDITY C15970.014

CONTROLLER, ENTHALPY C15970.015

CONTROLLER, LEVEL C15970.016

CONTROLLER, SILICON CONTROLLED

RECTIFIER (SCR)

C15970.017


CONTROL SYMBOLS


continued


CONTROLLER, ADJUSTABLE (VARIABLE)

SPEED DRIVE

C15970.018

CONTROLLER, 3 TO 5 POINTS, WHERE

B: BRANCH OUTPUT

M: MAIN POWER

I: PRIMARY INPUT

R: RESET INPUT (OPTIONAL)

C: CONTROL POINT ADJUST (OPTIONAL)

(X) DA: DIRECT ACTING, OR

RA: REVERSE ACTING

(Y) P: PROPORTIONAL CONTROL,

PI: P + INTEGRAL CONTROL, OR

PID: P + I + DERIVATIVE CONTROL

EXAMPLE 1:

DA: DIRECT ACTING

P: PROPORTIONAL CONTROL

EXAMPLE 2:

RA: REVERSE ACTING

PI: PROPORTIONAL + INTEGRAL

CONTROL

C15970.019

CONTROLLER, PRESSURE C15970.020

CONTROLLER, DIFFERENTIAL PRESSURE C15970.021

CONTROLLER, PROPORTIONAL, MANUAL C15970.022


CONTROL SYMBOLS


concluded


CONTROLLER, WHERE ACRONYM

DENOTES CONTROLLED GAS, SUCH AS “CO”

FOR CARBON MONOXIDE AND “CO2” FOR

CARBON DIOXIDE.

C15970.023

CONTROL PANEL C15970.024

MICROPROCESSOR CONTROL PANEL C15970.025

UNIT (PACKAGED UNITS, TERMINAL

BOXES) CONTROL MODULE

C15970.026

CONTROLLER, DUAL FUNCTION AND/OR

DEADBAND

C15970.027


CONTROL SYMBOLS

TABLE 3-2 SENSORS & TRANSMITTERS

SYMBOL

SENSOR OR TRANSMITTER


TEMPERATURE SENSOR OR TRANSMITTER,

WALL MOUNTED

C15972.001


POINT SENSING

C15972.002


AVERAGING, DUCT MOUNTED

C15972.003

TEMPERATURE SENSOR OR TRANSMITTER C15972.004

WET-BULB TEMPERATURE SENSOR OR

TRANSMITTER

C15972.005

DEW-POINT TEMPERATURE SENSOR OR

TRANSMITTER

C15972.006

CARBON MONOXIDE SENSOR OR

TRANSMITTER

C15972.007

CARBON DIOXIDE SENSOR OR

TRANSMITTER

C15972.008

OXYGEN SENSOR OR TRANSMITTER C15972.009


CONTROL SYMBOLS


continued


REFRIGERANT GAS SENSOR OR

TRANSMITTER

C15972.010

PIPE TEMPERATURE SENSOR OR

TRANSMITTER, WELL MOUNTED

C15972.011

HUMIDITY SENSOR OR TRANSMITTER,

DUCT MOUNTED

C15972.012

HUMIDITY SENSOR OR TRANSMITTER,

WALL MOUNTED

C15972.013

PRESSURE SENSOR OR TRANSMITTER C15972.014

DIFFERENTIAL PRESSURE SENSOR OR

TRANSMITTER

C15972.015

LEVEL SENSOR OR TRANSMITTER C15972.016

AMPERAGE SENSOR, CURRENT

TRANSMITTER

C15972.017

ELECTRIC-PNEUMATIC TRANSDUCER C15972.018


CONTROL SYMBOLS


concluded


KILOWATT TRANSDUCER C15972.019

VOLTAGE TRANSDUCER C15972.020


CONTROL SYMBOLS

TABLE 3-3 ACTUATORS


PNEUMATIC DIAPHRAGM, SPRING OPPOSED C15974.001

PNEUMATIC DIAPHRAGM,

SPRING OPPOSED, WITH POSITIONER

C15974.002

PNEUMATIC CYLINDER

C15974.003

PNEUMATIC CYLINDER WITH POSITIONER C15974.004

ELECTRIC MOTOR C15974.005

ELECTROHYDRAULIC

C15974.006

SOLENOID C15974.007


CONTROL SYMBOLS

TABLE 3-4 AUXILIARY DEVICES


ELECTRIC-PNEUMATIC TRANSDUCER C15960.001

MANUAL OR SETPOINT ADJUSTMENT

SWITCH (ANALOG)

C15960.002

MINIMUM POSITION SWITCH C15960.003

TWO POSITION SWITCH (OPEN-CLOSED) C15960.004

SINGLE POLE-DOUBLE THROW SWITCH C15960.005

THREE POSITION SWITCH C15960.006

HAND OFF AUTO SWITCH C15960.007

INTERVAL TIMER SWITCH

(OVERRIDE OR TEMPORARY OPERATION)

C15960.008

FLOW SWITCH C15960.009

END SWITCH C15960.010


CONTROL SYMBOLS


continued


SMOKE DETECTOR C15960.011

SMOKE DETECTOR, DUCT MOUNTED C15960.012

TIME DELAY RELAY

(X) DELAY IN SECONDS

(Y) (B): DELAY ON BREAK

(M): DELAY ON MAKE

EXAMPLE 1:

10 SECOND DELAY

(B): DELAY ON BREAK

EXAMPLE 2:

0 TO 60 SECOND DELAY RANGE

(M): DELAY ON MAKE

C15960.013

RELAY, WHERE (X) DENOTES ACTION:

NO: SINGLE POLE, NORMALLY OPEN

NC: SINGLE POLE, NORMALLY

CLOSED

DT: SINGLE POLE, DOUBLE THROW

DPNO: DOUBLE POLE, NORMALLY OPEN

DPNC: DOUBLE POLE, NORMALLY CLOSED

DPDT: DOUBLE POLE, DOUBLE THROW

EXAMPLE 1:

NO: SINGLE POLE, NORMALLY OPEN

EXAMPLE 2:

DPDT: DOUBLE POLE, DOUBLE THROW

C15960.014


CONTROL SYMBOLS


continued


VOLTAGE TRANSFORMER, STEP-DOWN C15960.015

TIME CLOCK C15960.016

DUAL CHANNEL TIME CLOCK C15960.017

REPEATER, COMMUNICATIONS C15960.018

TELEPHONE OUTLET C15960.019

TELEPHONE MODEM C15960.020

FIBER OPTIC TO CABLE MODEM C15960.021

PULSE-WIDTH MODULATION DRIVER C15960.022

LIGHTNING ARRESTOR C15960.023


CONTROL SYMBOLS


concluded


MOTOR STARTER, MANUAL C15960.024

MOTOR STARTER, MAGNETIC ACROSS-THE-

LINE WITH DISCONNECT SWITCH

C15960.025

MOTOR STARTER,

MAGNETIC ACROSS-THE-LINE

C15960.026

DISCONNECT SWITCH C15960.027

DISCONNECT SWITCH, FUSED C15960.028

CONTACTOR, THREE POLE C15960.029

MOMENTARY PUSH BUTTON C15960.030

MAINTAINED CONTACT PUSH BUTTON C15960.031

PNEUMATIC LINE RESTRICTOR C15960.032


CONTROL SYMBOLS

TABLE 3-5 ACCESSORIES


PRESSURE INDICATOR C15964.001

AIR COMPRESSOR C15964.002

AIR DRYER C15964.003

MOISTURE TRAP C15964.004

COMPRESSED AIR FILTER C15964.005


CONTROL SYMBOLS

TABLE 3-6 LINES


PNEUMATIC, INSTRUMENT SUPPLY C15986.001

PNEUMATIC CONTROL

(OPTIONAL: SLASHES DENOTE

NUMBER OF TUBES)

C15986.002

ELECTRIC

(OPTIONAL: SLASHES DENOTE

NUMBER OF CONDUCTORS)

C15986.003

MAIN AIR

(PRESSURE LEVEL MAY BE ADDED

AS NOTED [ kPa (PSIG) ])

C15986.004

SOURCE AIR



C15986.005

EP (ELECTRIC PNEUMATIC) AIR

(MAIN AIR SWITCHED BY AN ELECTRIC

PNEUMATIC RELAY)

C15986.006

DAY-NIGHT AIR

(AIR THAT VARIES BETWEEN DAY AND

NIGHT CYCLES)

C15986.007

SUMMER-WINTER AIR

(AIR THAT VARIES BETWEEN SUMMER AND

WINTER CYCLES)

C15986.008

INSTRUMENT AIR



C15986.009

PLANT AIR



C15986.010

LINE DESIGNATORS:


EQUIPMENT SYMBOLS

TABLE 4


PUMP E15540.001

CHILLER E15680.001

COOLING TOWER E15710.001

HEAT EXCHANGER, SHELL & TUBE E15755.001

HEAT EXCHANGER, PLATE E15755.002

COOLING COIL E15790.001

HEATING COIL E15790.002

ELECTRIC COIL E15790.003

HUMIDIFIER E15810.001


EQUIPMENT SYMBOLS

TABLE 4

continued


UNIT HEATER E15830.001

CENTRIFUGAL FAN E15860.001

CENTRIFUGAL FAN

WITH VARIABLE INLET VANES

E15860.002

VANEAXIAL FAN E15865.001

VANEAXIAL FAN, VARIABLE PITCH E15865.002

PROPELLER FAN E15865.003

FILTER E15885.001

AIRFLOW STATION E15910.101

AIRFLOW STATION

WITH FLOW STRAIGHTENER

E15910.102


EQUIPMENT SYMBOLS

TABLE 4

concluded


DAMPER, OPPOSED BLADE E15910.103

DAMPER, PARALLEL BLADE E15910.104

LOUVER E15910.105

ROOF VENTILATOR, INTAKE E15910.106

ROOF VENTILATOR, EXHAUST E15910.107

RADIANT PANEL, HEATING OR COOLING E15910.108

FINNED TUBE RADIATION E15910.109

EQUIPMENT NAME

EXAMPLES:

BOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WSHP (WATER SOURCE HEAT PUMP) . . .

E15560.001

E15855.001

Symbols - Std 134

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