Honeywell L6188A, L6188B, L6188C Reference Manual
HEATING CONTROLS
4.15
L6188A/B/C
AQUASTAT IMMERSION THERMOSTAT
FEATURES
■
Fast thermal response
■
Easy wire terminals
■
Double insulated
OPTIONS
■
External dial adjustment
■
Tamperproof adjustment
■
Manual reset limits
■
Direct mount or remote probe
■
Adjustable switching differential
APPLICATION
The L6188 Aquastats are primarily designed for application on
water filled heating and hot water systems in domestic and
commercial premises.
The liquid filled temperature probe is designed to be inserted
into a well in a heat exchanger or pipework. This ensures highly
responsive temperature control.
The L6188A are control thermostats with external control dial.
The L6188B are control thermostats with tamper proof internal
adjustment.
The L6188C are limit thermostats with tamper proof internal
adjustment and manual reset.
© Honeywell Control Products and Systems, Issue 10
AQUASTAT IMMERSION THERMOSTAT L6188A/B/C
■ Installation
T
he L6188 Aquastats can be installed
horizontally or vertically. The temperature
probe should be inserted in
1
/2" dry
w
ell.
■ Ordering Specification
L6188A2002
Controller, external adjustment knob
setting 25 to 95˚C, Diff. 4 to 10˚C.
With well assembly
L6188A2010
As above, but setting 40 to 110˚C
L6188A2036
As above, but setting 70 to 140˚C
L6188A2044
Controller, external adjustment knob
setting 40 to 110˚C, Diff 4 to 10˚C.
With high & low limit stops
L6188A2028
Controller, external adjustment knob
setting 25 to 95˚C, Diff. 4 to 10˚C.
With 1500mm capillary
L6188B2000
TP
*
Controller, setting 25 to 95˚C, Diff.
4˚C. Without wiring terminal cover
L6188B2018
TP
*
Controller, setting 70 to 140˚C,
Diff 4 to 10˚C. With 1500mm capillary
L6188B2026
TP
*
Controller, setting 40 to 110˚C,
Diff. 4 to 10˚C
L6188B2034
TP
*
Controller, setting 25 to 95˚C, Diff.
4˚C. With well assembly
L6188C2008
TP
*
Limit, internal setting 70 to 140˚C,
with manual reset
L6188C2016
TP
*
Limit, internal setting 25 to 95˚C,
with manual reset. With well assembly
45.900.409-003
Single dry well assembly for above.
1
/2"
BSPT thread. Length 105mm
*TP = Tamperproof. Temperature adjustment from dial
under top cover.
■ Specification
Switch Rating : 250VAC, 10A resistive, 2.5A inductive
Switch Type : Single pole, double throw (SPDT)
A
mbient Temperature Range : 0 to 70˚C
IP Rating : IP40
Standards : CE, UL, AGA, CSA
Approvals : 73/23/EEC, DIN3440
■ Dimensions (mm)
■ Wiring
C
12
Terminals C and 2 make on
temperature rise.
Terminals C and 1 make on
temperature fall.
For L6188C alarm is on 2
© Honeywell Control Products and Systems, Issue 10, 4.15
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