HEATING CONTROLS
4.18
L641A/L6190B
CYLINDER THERMOSTATS
FEATURES
L641A
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Ideal for general applications
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Suitable for use on uninsulated
and foam lagged cylinders
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Surface mounted
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Double insulated
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Dial or screwdriver slot
temperature adjustment
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Cylinder strap & hooks
L6190B
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Commercial construction
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Large adjustment dial
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Wide temperature range
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Liquid-filled probe
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Surface mounted
APPLICATION
The L641A Cylinder Thermostat is designed for surface mounting
on domestic hot water cylinders. It can be used to switch directly
a wet central heating circulating pump or boiler, or to operate
spring return and motor open/motor close zone valves.
The L6190B is a high limit control thermostat, which has a
tamperproof concealed adjustment. The liquid filled probe means
highly responsive temperature control.
© Honeywell Control Products and Systems, Issue 10