Limitem Rigid Bulb Thermostats - Industrial Controls356 Limitem Rigid Bulb Thermostat. Description The 356 Limitem Rigid Bulb Thermostat is a pneumatically operated, duct-mounted thermostat,

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Thermostats

A-21

356LimitemRigidBulbThermostat.

DescriptionThe356LimitemRigidBulbThermostatisapneumaticallyoperated,duct-mountedthermostat,whichisavailableineither direct or reverse acting in a variety of ranges.

Features• Durablecoppermotortubeandsteelrodtemperature

sensing element• Two-valvedesignreducesairwaste• Ductmountinghardwareincluded• Allmetalconstruction• 18"(46cm)sensingtube

ApplicationsThe356LimitemRigidBulbThermostatprovidesprimarycontrol for unit ventilators, fan coils and other air handling units.Canalsobeusedaslowlimitcontrolforairflowtoacontrolled space.

Application DrawingsDottedlinesarealternativecontrolschemes.

2-pipe.

1-pipe.

356Limitem Rigid Bulb Thermostats

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Control Action ...............................................................DirectorReverseMaximum Supply Air Pressure ..................................... 30 psi (207 kPa)Sensitivity Range (adjustable) .............0.25to2psi/°F(3to25kPa/°C)Factory Sensitivity Setting .................................1.25psi/°F(15kPa/°C)Temperature Response .................................................... 0.50°F(0.9°C)Dial Graduations ................................................. 5°F(2.7°C)/2°C(3.6°F)Maximum Ambient Temperature Case ................................................................................. 200°F(93°C) Bulb(DirectActing).......................................................... 225°F(107°C) Bulb(ReverseActing)...................................................... 250°F(121°C)

Nominal Air Supply Pressure ................... 18to25psi(124to172kPa)Maximum External Pressure (on bulb) .................... 250 psi (1722 kPa)Mounting ....................................................................Flangeor3/8"NPTAir Connections .........................................................................1/8"NPTDimensions BulbLength .......................................................................18"(457mm) FlangeOD ........................................................................2.56"(65mm) Case .......................................................................1.5"Diameterx3"L (33mmDiameterx76mmL)Shipping Weight ..............................................................2.0lb.(0.91kg)

356 Limitem Remote Bulb Thermostat Specifications

356 Limitem Remote Bulb Thermostat Product OrderingControl Action Temperature Operating Range Part No.DirectActing 0to100°F(-18to+38°C) 356-0012DirectActing 30to180°F(-1.11to+82.2°C) 356-0750Reverse Acting 0to100°F(-18to+38°C) 356-0013Reverse Acting 30to180°F(-1.11to+82.2°C) 356-1005Reverse Acting 100to250°F(37.8to121°C) 356-1006

Accessories & Service Kits A-75

TECH TIPWhen using the Limitem as a one-pipe device, a 40 scim (11 ml/s) restrictor will limit your output to 80% of supply. A 20 scim (5 ml/s) restrictor will limit your output to 60% of supply.

Example: With a 20 scim (5 ml/s) restrictor and 25 psi (11.3 kPa) supply, your maximum output is 15 psi (6.8 kPa).


Thermostats

A-23

357DLimitemRemote Thermostat with an average bulb.

DescriptionThe357DLimitemRemoteBulbThermostatisapneumatically-operatedthermostatthatisgradual,directacting with a remote or averaging bulb.

Features• Directactingonly• Remoteoraveragingbulbsforflexibilityininstallation• Liquid-filledsensingelementforrapidresponseto

temperature changes• Two-valvedesignreducesairwaste• Adjustablesensitivity

ApplicationsThe357DLimitemRemoteBulbThermostatprovidesprimary monitoring and control for air handling units or a low limit control.

Application DrawingsDottedlinesarealternativecontrolschemes.

2-pipe.

1-pipe.

357 DLimitem Remote Bulb Thermostats

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Control Action ..................................................................................DirectMaximum Supply Air Pressure ...................................... 30 psi (207 kPa)Sensitivity Range (adjustable) .......... 0.33to3.5psi/°F(4to43kPa/°C)Factory Sensitivity Setting ................................. 1.25psi/°F(15kPa/°C)Bulb ..........................................................................................Liquid-filledTemperature Response ....................................................... 0.5°F(0.3°C)Dial Graduations .................................................5°F(2.7°C),2°C(3.6°F)

Maximum Ambient Temperature (case) ............................. 180°F(82°C)Nominal Air Supply Pressure ....................18to25psi(124to172kPa)Mounting .........................................................................BracketsuppliedAir Connection ............................................................................1/8"NPTDimensions (Case) ..............................................1.75"Diameterx3.5"H (44.5mmDiameterx88.9mmH)Shipping Weight ................................................................ 2.0lb.(0.9kg)

357 D Limitem Remote Bulb Thermostat Specifications

357 D Limitem Remote Bulb Thermostat Product OrderingTemperature

Operating Range Sensing Element Capillary BulbMaximum

Ambient Temp. Part No.20to100°F(-6.7to+37.8°C) RemoteBulb 8'(2.4m) 3/8"x4'(0.95mmx10.2cm) 201°F(94°C) 357-00035to145°F(1.7to62.8°C) AveragingBulb 40'(12.2m) 3/32"x15'(0.24mmx457cm) 210°F(99°C) 357-0004

120to230°F(48.9to110°C) RemoteBulb 40'(12.2m) 3/8"x4"(0.95mmx10.2cm) 261°F(127°C) 357-000535to145°F(1.7to62.8°C) AveragingBulb 6"(15cm) 3/32"x8'(0.24mmx244cm) 211°F(99.4°C) 357-0001



Thermostats

A-25

188UnitMountedThermostat.

ApplicationsThe188UnitMountedThermostatsaredesignedprimarilyfor use in fan coil induction units and unit ventilators to control the temperature within an occupied space. The thermostat’s temperature range is limited to applications at ambient temperatures.

DescriptionThe188UnitMountedThermostatisagradualactingthermostatwitharemotebulboperatingontheforce-balance principle, using pneumatic feedback to obtain linearity and maintain selected room temperature by positioning pneumatic devices to control heating or cooling.

Features• Liquid-filledthermalsystemtemperature

sensing element• Durabledie-castmetalcasewithruggedsetpointknob• Adjustablesensitivity• Universalmountingbracketforeasyinstallation• Integraladjustablelimitstops• Availableas: –DirectActingonly(Heating) –ReverseActingonly(Cooling) –HeatorCooldependingonsupplyairpressure

Typical Connections

188Unit Mounted Thermostats

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Control Action ...............................Heating/Cooling,DirectandReverse; Directonly;ReverseonlyOperating Range ........................................... 60to85°F(15.5to29.4°C)Operating Pressure ...............................................30 psi (207 kPa) max.Adjustment Sensitivity ........................1to5.25psi/°F(12to65kPa/°C)Factory Sensitivity Setting .................................2.25psi/°F(28kPa/°C)Temperature Response ...................................................... 0.2°F(0.1°C)Maximum Ambient Temperature Case .............................................................................. 135°F(57.2°C) Bulb ................................................................................231°F(111°C)Scale Graduations ............................................................... 1°F(0.55°C)Nominal Air Supply Pressure DirectorReverseActing............................................... 25 psi (172 kPa) Heating/Cooling .................................25psi(172kPa)/18psi(124kPa)

Average Air Usage 20 scim Restrictor.......................................................25scim(6.8ml/s) 40scimRestrictor.....................................................45scim(12.2ml/s)Air Connections ......... 1/4"(6mm)BrassbarbedforpolyethylenetubingBulb Size ............................................................ 3/8"Diameterx3-1/2"L (9.5mmDiameterx89mmL)Capillary Length ..................................................48"(121.9cm)approx.Finish ................................................Corrosion-resistantZincChromateDimensions (case) Heating/Cooling,ReverseActing.................... 3.1"Wx2.4"Hx2.13"D (100mmWx61mmHx54mmD) DirectActing ................................................... 3.1"Wx2.4"Hx1.38"D (100mmWx61mmHx35mmD)Shipping Weight ..............................................................3.0lb.(1.36kg)

188 Unit Mounted Thermostat Specifications

188 Unit Mounted Thermostat Product OrderingControl Action Changeover Pressure Average Air Usage Part No.

Single Setpoint DirectActing/25psi(172kPa) — 40scim(11ml/s) 188-0031

Single Setpoint ReverseActing(Cooling)18psi — 20 scim (5 ml/s) 188-0024

Heat/Cool DirectActing/ReverseActing(Cooling) 18psi(124kPa) — 40scim(11ml/s) 188-0030

Heat/CoolRetrolineDirectActing/ReverseActing 18psi(124kPa)/13psi(90kPa).Retroline replacement for Honeywell LP916BXXXX.

15 psi (103 kPa) 40scim(11ml/s) 188-0033

Heat/CoolRetrolineDirectActing/ReverseActing 20psi(138kPa)/15psi(103kPa).Retroline replacement for Johnson Controls T-3300-2.

17 psi (117 kPa) 40scim(11ml/s) 188-0034



Thermostats

A-27

134PneumaticLowTemperatureDetectionThermostat.

DescriptionThe134HighandLowTemperatureDetectionPneumaticThermostatsautomatically“lockout”atsetpointandrequiremanual reset.

Features• Snap-actingpneumaticswitch• Sight-setcalibratedsetpointscale• Noleakageofairpriortoresetofswitch• Easily adjustable settings• Normallyclosedairvalve;bleedstolessthan2psi

(14kPa)whensuppliedthrougharestrictor• Barbfittingforpush-onconnectionof1/4"(6mm)

ODpolyethylenetubing• Holdsdead-endedlinetoapproximately22psi

(152 kPa) air pressure

ApplicationsThe134PneumaticHighandLowTemperatureDetectionThermostats are used on pneumatic heating and cooling systems in areas protected from the weather.

On a typical high limit application, the thermostat shuts down air conditioning or ventilating fans when the duct temperature becomes excessively high. A normally closed switch opens at setpoint.

On a typical low temperature application, the thermostat stops the fan or closes a damper when the temperature drops to the setpoint at any one foot (30.5 cm) or more of the sensing element.

Application Drawings

134Pneumatic High and Low Temperature Detection Thermostats

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Part No. 134-1700Ambient Temperature Range .............................Greater than setpoint to 140°F(60°C)Pneumatic Switch ...........................NC,0.020"(0.6mm)diameterbleedControl Point Low Temperature Thermostat ..............................Lowest temperature at any one foot section of the sensing bulbCase Finish ..............................................................GrayBakedEnamelShipping Weight ............................................................2.45lb.(1.11kg)

Part No. 134-1710Ambient Temperature Range .............................................-40to+140°F (-40to+60°C)Pneumatic Switch .............................NC,0.02"(0.6mm)diameterbleedControl Point Low Temperature Thermostat ..............................Lowest temperature at any one foot section of the sensing bulbCase Finish ..............................................................GrayBakedEnamelShipping Weight ............................................................2.38lb.(1.08kg)

Dimensionsshownininches(mm).

Dimensions

134 Pneumatic Thermostat Specifications

134 Pneumatic Thermostat Product Ordering

Temp.Temperature

Range DifferentialMax. Bulb

Temp.Bulb & Capillary

Length Switch Reclose Part No.

Low

15to55°F(-9to+12.8°C)with stop at 35°F(1.67°C)

5°F(2.8°C)Non-Adjustable

400°F(204°C) 20'(6m)

Temperature must increase by 5°F(2.8°C)beforepneumaticswitch can be reclosed.

134-1700

High 100to170°F (38to77°C)

10°F(5.6°C) Non-Adjustable

250°F(121°C)

2.7"(69mm)Dia.x10"(25.4cm)Lbulbwith6'(183mm)capillary

Temperaturemustdrop10°F(5.6°C)beforepneumaticswitch can be reclosed.

134-1710



Thermostats

A-29

141ElectricLineVoltageRemoteBulbThermostat.

DescriptionThe141ElectricLineVoltageRemoteBulbThermostat isatwo-positionelectriclinevoltagethermostatwithremote bulb.

Features• Temperaturesensitive,liquid-filledsensingelement• Single-pole,double-throwsnap-actingswitches• Enclosedswitchessuitableforloworlinevoltage

power switching• Graybakedenamelcase

ApplicationsThe141ElectricLineVoltageRemoteBulbThermostatis used for temperature control in heating and cooling application,typicallytodirectlyoperatetwo-positiondamper motor actuators, motor actuated valves, relays and similar equipment. Typical applications includes summer-winterchangeoverandthedirectcontrolof liquidorairtemperatureswheretwoposition(ON-OFF)control is acceptable.

Typical Connections

YELLOW

BLUE

RED (COM)

CLOSE ON RISEOF TEMPERATURE

OPEN ON RISEOF TEMPERATURE

141Electric Line Voltage Remote Bulb Thermostats

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Part no. in black box ships same day when requested through rapid responsetM shipping. see inside back cover for details.

Inductive Amps FullLoadAmps 120Vac ..........................................................................................7.4 240Vac ..........................................................................................3.7 Locked Rotor Amps 120Vac ........................................................................................44.5 240Vac ........................................................................................22.2

141 Electric Line Voltage Remote Bulb Thermostat Specifications

141 Electric Line Voltage Remote Bulb Thermostat Product OrderingTemperature Scale Range Max. Bulb Temp. Bulb Size Switch Differential Part No.

0to120°F(-7to+49°C) 130°F(54°C).038"Diameterx4.03"L

(9.9mmDiameterx102mmL)Capillary6'(183cm)

Adjustable6to30°F (3to16°C) 141-0520

100to240°F(38to110°C) 250°F(121°C).029"Diameterx2.33"L

(7.4mmDiameterx59.2mmL)Capillary6'(183cm)

Adjustable7to45°F (14to25°C) 141-0521


Resistive Amps 120Vac ...............................................................................................25 240Vac ...............................................................................................20Dimensions .................................................... 2.5"Wx5.38"Hx2.31"D (64mmx(136mmx59mm)Shipping Weight ..............................................................1.8lb.(0.82kg)


Thermostats

A-31

134ElectricLineVoltageRoomThermostat—Heating/Cooling.

ApplicationsThe134ElectricLineVoltageRoomThermostat controlsheatingandcoolingapplicationsoryear-round air conditioning units in commercial, industrial, or residential installations.

DescriptionThe134ElectricLineVoltageRoomThermostatisa line voltage On/Off room thermostat for heating and cooling applications.

ModelsareavailablewithSPSTorSPDTcontactactionandforstandard,nominal1/4hp/10ampsnoninductive,or heavy duty, nominal 1 hp / 22 amps noninductive applications.

Features• Singlesetpointdial• Exposedbimetalthermometer• Temperaturerangefrom50to90°F(10to30°C)• Highandlowlimitstops• Standardorheavydutymodels• DualFahrenheit/Celsiusscaleplate

Typical Connections

134Electric Line Voltage Room ThermostatsHeating/Cooling

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Part No. 134-1083Motor Rating 120Vac ...........................................................................................6.0A 240Vac ...........................................................................................3.7 ASwitch Action ........................................SPSTwith“Auto-Off-Fan”switchDimensions .................................................. 2.78"Wx5.19"Hx1.88"D (71mmWx132mmHx48mmD)Shipping Weight ..............................................................1.3lbs.(0.6kg)

Part No. 134-1086Motor Rating 120Vac ...........................................................................................6.0A 240Vac ...........................................................................................3.0 ASwitch Action .................................................................................. SPSTDimensions ....................................................... 3"Wx4.75"Hx1.44"D (75mmWx120mmHx36mmD)Shipping Weight 1.3lb.(0.6kg)

Part No. 134-1084Motor Rating 120Vac ...........................................................................................6.0A 240Vac ...........................................................................................3.0 AResistive Rating 120Vac ..................................................................................10.0 amps 240Vac ..................................................................................10.0 ampsSwitch Action ..................................................................................SPDTDimensions ....................................................... 3"Wx4.75"Hx1.44"D (75mmWx120mmHx36mmD)Shipping Weight ................................................................1.0lb.(0.6kg)

Part No. 134-1085Motor Rating 120Vac ...........................................................16.0Heating/8.0Cooling 240Vac .............................................................8.0Heating/8.0CoolingResistive Rating 120Vac ..............................................................................22.0Heating 240Vac ..............................................................................22.0HeatingSwitch Action ..................................................................................SPDTDimensions ....................................................... 3"Wx4.75"Hx1.44"D (75mmWx120mmHx36mmD)Shipping Weight ................................................................1.0lb.(0.6kg)

134 Electric Line Voltage Room Thermostat Specifications

134 Electric Line Voltage Room Thermostat Product OrderingSwitch Action Temp. Set Point Range Temp. Set Point Adjustment Temperature Difference Part No.

SPST 40to90°F(5to30°C) Concealed 1.8°F(1°C) 134-1083

SPST 40to90°F(5to30°C) Concealed 1.8°F(1°C) 134-1086

SPDT 40to90°F(5to30°C) ExposedKnoborConcealed1 1.8°F(1°C)Heating 2.31°F(1.3°C)Cooling 134-1084

SPDT 40to90°F(5to30°C) ExposedKnoborConcealed1 3°F(1.7°C)Heating 3.5°F(2°C)Cooling 134-1085

Ordering Note1. Each thermostat is shipped with a blank faceplate for use when concealed adjustment is desired.



Thermostats

A-33

RAA10CFanCoilThermostatwith concealed setpoint knob.

RAA20U Room Thermostat with exposed setpoint knob.

ApplicationsThe RAA… Electric Room Thermostats are typically used in public buildings, storage rooms, entrance hallways and maintenanceroomswheretwo-position(On/Off)control is required.

Descriptions of models are as follows:RAA10Cmodelisaheatingorcoolingonlythermostatthat has a concealed setpoint knob for use in areas where setpoint adjustment is limited to authorized personnel. Typical applications are frost and overheat protection and temporary heat for buildings under construction.

RAA20U model is a heating or cooling only thermostat that has an external setpoint knob for occupant adjustment.

Note:ARG 70 wall plate is required in order to be UL compliant for switching line voltage.

The RAA… Room Thermostats are designed for either simpleheatingorcoolingorfor2-pipeheatingandcoolingsystems where fan control is not required.

DescriptionDesignedforsimpleheatingorcoolingorheating/coolingapplications, RAA… Electric Room Thermostats are an attractiveandeconomicalsolutionthatutilizetwo-wire, gas membrane technology.

RAA… Electric Room Thermostats are available in singlescaleFahrenheitorCelsiusmodels,excepttheRAA10C,withmodelsfordrywallorelectricalwallboxmounting. Models designed for wall box mounting include wall box plate adapter and screws.

Features• Two-pointcontrolalgorithmforon/offcontrol• 24to120,277Vacline• Twomountingstyles:electricalwallboxordrywall• DualFahrenheit/Celsiusscale(RAA20U)

Options• Tamperproofcover(concealedsetpointknob)noted

withaC• Availablewithwallplate

RAA…Electric Room Thermostats

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Operating Voltage ......................................................24to120,277VacFrequency ..............................................................................50or60HzSetpoint Adjustment Range .............................. 50to85°F(10to29°C)Switching Differential ......................................................... <1.8°F(1°C)Switch Rating ............................................. 6ARES,3.5AFLA,12ALRATime Constant ...............................................................................14min.Switch Action Output ..................................SPDTTwo-position(On/Off)Operation–Conditions Operating Temperature .................................... 32to122°F(0to50°C) RelativeHumidity ...................................................................<95%RH

Transportation/Storage Conditions Temperature ...............................................-4to+122°F(-20to+50°C) RelativeHumidity ...................................................................<95%RHHousing Material ........................................................................................Plastic Color ............................................................................................White Bellows ..................................................... Environmentally-friendlygasWiring ........................................................... Screw terminals for wires of 2x16AWGor1x14AWG,20AWGmax.Agency Listings ........................................ConformstoCErequirements ULlistedto873 cULlistedtoCanadianstandardC22.2No.24-93Shipping Weight ............................................................0.31lb.(0.14kg)

RAA Electric Room Thermostat Specifications

RAA Electric Room Thermostat Product Ordering

DescriptionElectric Wall Box1

Part No.Dry Wall Part No.

Thermostat for heating or cooling only RAA10CW RAA10CThermostat for heating or cooling only with exposed setpoint knob RAA20UW RAA20U

Ordering Note1. Includeswallplate,ARG70, to be UL compliant for switching line voltage.


RAA10C... Thermostat

Wall Plate (ARG70) for Mounting (RAA10CW and RAA20UW)

Dimensionsshownininches(mm).

3.80(96.4)

3.92

(99.

6)

1.42(36)T

H05

03R

2RAA20U... Thermostat

3.80(96.4)

3.92

(99.

6)

1.68(42.8)T

H04

97R

2

RAA Electric Room Thermostat DimensionsTherm

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RAA Electric Room Thermostat Engineering Drawings

Wiring Diagrams

HeatingMode CoolingMode

RAA10C…/RAA20U…

KeyD1 HeatingdeviceD2 CoolingdeviceL Operating voltageN NeutralN1 Room thermostat

S On/Off switchT ThermostatW HeatingcontroloutputY Coolingcontroloutput

Operating Diagrams

HeatingMode CoolingMode

KeyT Room temperatureSD Switching differentialSP Room temperature setpoint

W HeatingoutputsignalY Coolingoutputsignal

RAA10C…/RAA20U…

Documents

Limitem Rigid Bulb Thermostats - Industrial Controls356 Limitem Rigid Bulb Thermostat. Description The 356 Limitem Rigid Bulb Thermostat is a pneumatically operated, duct-mounted thermostat,