©Johnstone Supply eCatalog 216

HYDRONICS Controls

HeatManager™ Fuel Economizer • Adjusts burner firing patterns and average boiler water temperature to match system heat load • Reduces fuel consumption 10 to 20% • For use with new or existing residential boilers up to 300,000 Btu • Compatible with oil, gas and propane burners • Easy installation; no programming or ongoing maintenance required

• Sensor and wiring connections at the boiler; no outdoor sensor required • Additional temperature sensor port for supporting a domestic hot water system with tankless coil Specifications: • Electrical rating: 24/115/220VAC • Dimensions: 4" W x 4" H x 2-1/2" D Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. # 7518

Description

L40-789

Additional Sensor for Tankless Coil Applications

Hydronic Switching Relays • Provides intermediate switching of a line voltage device from a low voltage controller • Integral transformer provides 24VAC power for control circuit • L36-918 for switching one line voltage load • L36-919 for switching two line voltage loads having a common power source; millivolt rating: 300mA minimum at 750mV; includes auxiliary contacts for switching additional low or millivoltage (Powerpile ® ) loads; maximum connected load: 2000VA

• L37-916 provides DPST switching for hot water zone control systems or SPST control of two separate loads; second set of contacts rated for line or low voltage load; maximum connected load: 2000VA Specifications: • Resistive rating: 120VAC, 10A; 240VAC, 6A; maximum input 5W • Maximum ambient temperature: 115°F for 60 Hz, 105°F for 50 Hz

Order # Mfg. #

Switch Action

Volts

F/L Amps @ 120V

L/R Amps @ 120V

F/L Amps @ 240V

L/R Amps @ 240V

L36-918 RA89A1074 SPST L36-919 RA832A1066 DPST

120 120 120

10.2

61.2 44.4 44.4

5.1 3.7 3.7

30.6 22.2 22.2

7.4 7.4

L37-916

R845A1030 DPST/SPST

Universal Hydronic Switching Relay • Replacement relay common to other Honeywell hydronic replacement controls • Restores intermediate line and low-voltage switching in most oil-fired or gas-fired hydronic heating systems • Two troubleshooting LEDs; push-to-test button • Replaceable transformer fuse • Long-life DC relay drive control technology

• Switching action: two SPST, plus Powerpile ® rated low-voltage SPST, max. conn. load: 1500VA • Use with external 24VAC or 24VDC supply, line-voltage control, or internal 24V transformer • Model functionally replaces: R182A, B, C, J; R482A, B, C, J; R845A, R882A, B, C, J and RA832A

Order # Mfg. #

Switch Action

Volts

F/L Amps @ 120V L/R Amps @ 120V

L38-870 R8845U1003

SPST

120

7.4

44.4

Hydronic Switching Relay • Provides switching of a line or low-voltage device from a line or low-voltage controller; typically applied in hydronic heating systems • Relay for use with external 24VAC or 24VDC supply, with line-voltage control, or with internal 24V transformer supply • Push-to-test button • Long-life DC relay drive control technology • Secondary of transformer protected by replaceable 1A automotive-style fuse

Specifications: • Electrical ratings: primary voltage 120VAC; contact ratings: 120VAC, 60 Hz, 15A FL, 30A ALR, 2000VA max. on line voltage contacts • Switching action: SPDT, plus Powerpile ® rated low voltage SPST relay • Ambient temperature: -20°F to +120°F • Dimensions: 6-1/4" H x 4-7/16" W x 3-1/2" D

Order # Mfg. # L40-034 RA889A1001

527

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