©Johnstone Supply eCatalog 216

HYDRONICS Boiler Controls

Replacement Head Mechanism • For low water cut-offs WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

For Use With

L86-155

173003

150S-HD

L86-136 (# 150S)

Low Water Cut-Offs for Steam Boilers Electric with Manual Reset and Test Switch • For commercial and industrial secondary low water protection • Electronic circuitry with remote conductance probe • LED low water indicator light • No lockout with loss of power if probe is in water • Meets ASME Code CSD-1 requirements • Remote sensor L38-783 includes probe, L38 784 probe sold separately

• L40-233 includes PA-800 probe Specifications:

• Maximum ambient temperature: 120°F • Voltage across probe to ground: 14VAC • Maximum remote sensor water temperature: L38-783 — 250°F; L38-784 — 406°F • Maximum remote sensor steam pressure: L38-783 — 15 PSI; L38-784 — 250 PSI Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

A

B

C

D

Fig. Order #

Mfg. #

Model #

Description

Volts

Fig. Order #

Mfg. #

Model #

Description

Volts

L38-772 L40-233

L38-783 L38-784

A B

176207 —

—

—

C D

176203 RS-1-LP 179524 RS-1-BR-1

Remote Sensor 120/240 Remote Sensor 120/240

176234 750P-MT-120 Control with PA 800 Probe

120/240

Low Water Cut-Off For Steam Boilers Float Type • For residential, commercial and industrial

• Optional manual reset available at participating Johnstone Supply Stores or by special order Specifications: • Maximum boiler pressure: 50 PSI WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

boilers of any steaming capacity • 1" NPT equalizing pipes required • Packless bellows

• Adjustable BX outlet for easy installation • Dual precision switches for operation of the low water cut-off and an alarm or an electric water feeder

Order #

Mfg. #

Model #

Volts

L38-770

143600

64

120

538

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