Honeywell 1EN2R-9005 0406R3-NE manual L4188 L6188 Single Aquastat Direct Immersion, Application

L4188 - L6188 SINGLE AQUASTAT - DIRECT IMMERSION

APPLICATIONS AND ORDERING INFORMATION

Application

L4188 and L6188 are sensitive, immersion-type water temperature thermostats for controlling and limiting boiler water temperature in hydronic heating systems.

The thermostat has a liquid-filled sensing element which fits into an immersion well (order separately) for direct mounting into a boiler, tank or other vessel.

Ordering information

O.S. number	Application	Temperature		Switch	Switch type	Setting means	Remarks
		range		differential (K)			(see notes)
L4188A 2015	Controller	25	... 95°C	4	SPST	External knob	-
L4188A 2023	Controller	40	... 110°C	4	SPST	External knob	5
L4188A 2031	Controller	25	... 95°C	4	SPST	External knob	5
L4188B 2005	Controller	40	... 110°C	4	SPST	Internal screw	4 - 5
L4188B 2013	Controller	25	... 95°C	4	SPST	Internal screw	4 - 5
L6188A 2002	Controller	25	... 95°C	4 ... 10	SPDT	External knob	6
				(adjustable)
L6188A 2010	Controller	40	... 110°C	4 ... 10	SPDT	External knob	6
				(adjustable)
L6188A 2028	Controller	25	... 95°C	4 ... 10	SPDT	External knob	3
				(adjustable)
L6188A 2036	Controller	70	... 140°C	4 ... 10	SPDT	External knob	6
				(adjustable)
L6188A 2044	Controller	40	... 110°C	4 ... 10	SPDT	External knob	Tradeline 1 - 7
				(adjustable)
L6188B 2000	Controller	25	... 95°C	4	SPDT	Internal screw	4
L6188B 2018	Controller	70	... 140°C	4 ... 10	SPDT	Internal screw	3 - 7
				(adjustable)
L6188B 2026	Controller	40	... 110°C	4 ... 10	SPDT	Internal screw
				(adjustable)
L6188B 2034	Controller	25	... 95°C	4 ... 10	SPDT	Internal screw	6 - 7
				(adjustable)
L6188B 2042	Controller	25	... 95°C	4	SPDT	Internal screw
L6188C 2008	Limiter	70	... 140°C	Manual reset	SPDT	Internal screw	7
L6188C 2016	Limiter	25	... 95°C	Manual reset	SPDT	Internal screw	6 - 7

1 = High limit stop

2 = High limit stop at 60°C

3 = Capilliary length 1500 mm and mounting bracket

4 = Without cover and conduit box

5 = Quick connect terminals only

6 = With well assembly

7 = With push-in plug

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