©Johnstone Supply eCatalog 216

COMMERCIAL CONTROLS Economizer Controls

Damper Motors • Spring return motors for two-position back draft, outdoor air changeover, zone or minimum position damper control • Includes internal SPDT switch for controlling auxiliary equipment, additional motors, or to provide a burner interlock switch

• Drive shafts located on both sides of motor Specifications: • Fixed stroke: 75° • Control signal: SPST, on/off • Ambient temperature range: 32°F to 125°F • Dimensions: 4-5/8" W x 4-1/2" H x 3-3/4" D

Each

Order # Mfg. #

Volts

Power Consumption

Torque

Timing Max.

L39-858 M436A1116 120

Opening: 27W; Holding: 8.5W 20 lb-in Opening: 27W; Holding: 8.5W 20 lb-in Opening: 27W; Holding: 8.5W 20 lb-in Opening: 20.3W; Holding: 11.2W 15 lb-in

30 30 30 25

1899.00 2145.00 1999.00 1999.00

L40-761

M436A1124 240

L39-867 M836A1042 24 L39-868 M836B1033 24

Solid State Economizer Systems • Reduce cooling costs by incorporating outdoor air in the first stage of cooling in HVAC systems • L39-865 power consumption is 7VA while driving, 3VA while holding

• Field stroke max is 90°, 90 second timing max, modulating thermistor control signal, 25 lb./in torque, 24VAC, with an ambient temperature range of -25°F to +125°F and includes quick connect terminals

Order # Mfg. #

Description

For Use With

L39-864 M7415A1006

Economizer Actuator

Legacy W7459 Logic Module, Rotation to open: CCW

L39-865

M7415B1004

Economizer Actuator, Rotation to Open; CW

Legacy W7459 Logic Module

Carbon Dioxide (CO2) Sensors • Stand alone Carbon Dioxide (CO2) Sensors for use in determining ventilation necessity with HVAC Controllers • The sensors measure the CO2 concentration in the ventilated space or duct

• The sensors are used in ventilation and air conditioning systems to control the amount of fresh outdoor air supplied to maintain acceptable levels of CO2 in the space

A

B

Each

Fig. Order # Mfg. #

Description

Standard CO2 Sensors A L47-300 C7232A1008

Display, Wall Mount No Display, Duct Mount No Display, Wall Mount No Display, Duct Mount

785.00 909.00 669.00 775.00

L47-301

B

C7232B1014

Fixed Output CO2 Sensors C L47-302 C7632A1004

C

L47-303

C

C7632B1002

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450

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