L41../L61.. SERIES
THERMOSTAT (AQUASTAT)
PRODUCTION HANDBOOK
APPLICATION
The L41../L61.. series aquastats are primarily designed for
application on water filled heating systems and systems for hot
water supply, mainly domestic use.
Contents
General
page
Description of device functions ......................................... 2
Description ........................................................................ 3
Overview/selection guide ................................................. 4
Features ............................................................................ 5
Aquastat series
L4188 - L6188 .................................................................. 6
L4189 - L6189 .................................................................. 8
L6190 ............................................................................. 10
L4191 - L6191 ................................................................ 12
L6188A 2044 Tradeline .................................................. 14
Performance .................................................................... 16
Construction .................................................................... 17
Various
Accessories and spare parts ........................................... 18
Quality assurance statement ........................................... 20
Standards and approvals ................................................ 20
Ordering information ........................................................ 21
1
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DESCRIPTION
The L41../L61.. series aquastats can be divided in the
following main types:
• Controller
The L41../L61.. series aquastats are sensitive water tempera-
ture control, which are provided with a liquid filled sensing sys-
tem.
Controls the water temperature in accordance with the
setting of an external knob (TÜV-type TR)
The following main types are available:
• Recycling limit control
• Single, panel mount immersion
Limits the water temperature below or above an adjusted
level and resets automatically. This type has a greater
differential and no external knob (TÜV-type TW).
Aquastat with remote bulb to select the most favourable
position on a boiler or vessel.
• Single, direct mounted immersion
Aquastat with insulating cover to protect against accidential
touching of live parts.
• Thermal cut-out with external reset button
(manual reset)
Limits the water temperature on a maximum adjusted level.
This type does not reset automatically and it does not have
an external knob.
• Dual, direct mounted immersion
Dual Aquastat and consisting of two basic single units,
which are mounted together and protected by one common
cover and using one well for the two sensors.
• Thermal cut-out with internal reset button (tool reset)
Limits the water temperature on a maximum adjusted level.
This type does not reset automatically and it does not have
an external knob.
• Single, surface mounted
The sensor of this type is to be mounted directly on the
surface of a boiler or pipe in a heating system. The
Aquastat mechanism is directly attached to this sensor.
The L41../L61.. series aquastats are primarily designed for
application on water filled heating systems and systems for hot
water supply, mainly domestic use.
3
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OVERVIEW/SELECTION GUIDE
Application
Single Aquastat thermostats
Controller or limiter thermostat
Dual Aquastat thermostats
Controller and limiter thermostat with standard
sensing element
Direct mount (immersion)
L4188A, B, C
25 ... 95°C
40 ... 110°C
70 ... 140°C
L6188A, B, C
L4191A, B and L6191A, B
25 ... 95°C
25 ... 95°C
40 ... 110°C
70 ... 140°C
50 ... 95°C
40 ... 110°C
70 ... 140°C
Panel mount (immersion)
L4189A, B, C 25 ...
95°C 40 ... 110°C
110 ... 230°F
L6189A, B, C
25 ... 95°C
40 ... 110°C
70 ... 140°C
110 ... 230°F
Surface mount
(with mounting strap)
L6190A, B, C
25 ... 95°C
Replacement aquastat (immersion)
L6188A 2044
40 ... 110°C
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FEATURES
• 6.3 mm quick connect terminals for receptacles
• Mounting either in a horizontal or vertical position.
• Housing is provided with two mounting holes which are
suitable for M4 thread forming screws, for mounting on a
control panel.
• Cable entry in the conduit box is suitable for Pg 13.5
conduit or is provided with a plastic grommet (at choice).
• The high and low setpoint stops are field adjustabe with
steps of 2.5°C.
• Capillary available in 350 mm (optional), 1000 mm
(standard), 1500 mm (optional) and 2000 mm (optional)
length.
• Surface mounted Aquastat can be mounted on
cylinders of 300 ... 460 mm diameter as well on pipes
from 40 ... 150 mm diameter.
• Wide range of well assemblies available.
5
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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
Application
O.S. number
Temperature
range
Switch
differential (K)
Switch type
Setting means
Remarks
(see notes)
L4188A 2015
L4188A 2023
L4188A 2031
L4188B 2005
L4188B 2013
Controller
Controller
Controller
Controller
Controller
25 ... 95°C
40 ... 110°C
25 ... 95°C
40 ... 110°C
25 ... 95°C
4
4
4
4
4
SPST
SPST
SPST
SPST
SPST
External knob
External knob
External knob
Internal screw
Internal screw
-
5
5
4 - 5
4 - 5
4 ... 10
L6188A 2002
L6188A 2010
L6188A 2028
L6188A 2036
Controller
Controller
Controller
Controller
25 ... 95°C
40 ... 110°C
25 ... 95°C
70 ... 140°C
SPDT
SPDT
SPDT
SPDT
External knob
External knob
External knob
External knob
6
6
3
6
(adjustable)
4 ... 10
(adjustable)
4 ... 10
(adjustable)
4 ... 10
(adjustable)
4 ... 10
L6188A 2044
L6188B 2000
L6188B 2018
Controller
Controller
Controller
40 ... 110°C
25 ... 95°C
70 ... 140°C
SPDT
SPDT
SPDT
External knob
Internal screw
Internal screw
Tradeline 1 - 7
(adjustable)
4
4
4 ... 10
(adjustable)
3 - 7
4 ... 10
L6188B 2026
L6188B 2034
Controller
Controller
40 ... 110°C
25 ... 95°C
SPDT
SPDT
Internal screw
Internal screw
(adjustable)
4 ... 10
(adjustable)
6 - 7
L6188B 2042
L6188C 2008
L6188C 2016
Controller
Limiter
Limiter
25 ... 95°C
70 ... 140°C
25 ... 95°C
4
SPDT
SPDT
SPDT
Internal screw
Internal screw
Internal screw
Manual reset
Manual reset
7
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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L4188 - L6188 SINGLE AQUASTAT - DIRECT IMMERSION
Specifications
Ambient temperature limits
0 ... 70°C
Immersion wells, see page 18
C
1
2
C
1
Electrical connection
6.3 mm spade terminals
+
+
Enclosure
IP40
Electrical rating
SPST
SPDT
10 A at 250 Vac, resistive load
2.5 A at 250 Vac, inductive load
15 A at 250 Vac, locked motor
250 mA at 30 mVdc (special option)
Fig. 1. Internal schematics L4188/L6188
Terminal data
C-1 breaks on temperature rise (SPDT and SPST)
C-2 makes on temperature rise (SPDT only)
Accessories
14.6
11.5
48
5
47.1
85
32
2
1
C
9
72
30
21
Pg 13.5
14.4
4
14
48
48
Fig. 2. Dimensional drawing L4188/L6188
7
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L4189 - L6189 SINGLE AQUASTAT - PANEL MOUNTING (IMMERSION)
APPLICATIONS AND ORDERING INFORMATION
Application
L4189 and L6189 are sensitive, immersion-type water
temperature thermostats for controlling and limiting boiler
water temperature in hydronic heating systems.
These thermostats are designed for panel mounting and are
supplied with a remote bulb and a liquid-filled sensing element
which fits into an immersion well (order separately) for
mounting into a boiler, tank or other vessel.
Ordering information
Application
O.S. number
Temperature
range
Switch
differential (K)
Switch type
Setting means Capillary
Remarks
length (mm) (see notes)
L4189A 2006
L4189A 2014
L4189A 2089
L4189A 2097
L4189A 2105
L4189B 2012
L6189A 2001
L6189A 2019
Controller
Controller
Controller
Controller
Controller
Controller
Controller
Controller
25 ... 95°C
25 ... 95°C
25 ... 95°C
25 ... 95°C
25 ... 95°C
100 ... 230°F
25 ... 95°C
25 ... 95°C
4
4
4
4
4
4
8
4
SPST
SPST
SPST
SPST
SPST
SPST
SPDT
SPDT
External knob
External knob
External knob
External knob
External knob
Internal screw
External knob
External knob
1000
1500
1000
1000
350
1000
1500
1500
2
-
1 - 4 - 5
5
1 - 6
3
2
-
4 ... 10
L6189A 2043
L6189A 2068
L6189A 2092
L6189A 2118
L6189A 2134
L6189A 2142
L6189A 2159
Controller
Controller
Controller
Controller
Controller
Controller
Controller
40 ... 110°C
25 ... 95°C
SPDT
SPDT
SPDT
SPDT
SPDT
SPDT
SPDT
External knob
External knob
External knob
External knob
External knob
External knob
External knob
1500
1000
1500
1500
1500
2000
2000
-
(adjustable)
4
2
1
1
1
1
1
7 ... 18°F
(adjustable)
15°F
7 ... 18°F
(adjustable)
15°F
110 ... 230°F
110 ... 230°F
110 ... 230°F
110 ... 230°F
110 ... 230°F
7 ... 18°F
(adjustable)
L6189B 2009
L6189B 2025
L6189B 2041
L6189C 2007
L6189C 2023
L6189C 2031
Controller
Controller
Controller
Limiter
Limiter
Limiter
25 ... 95°C
25 ... 95°C
40 ... 110°C
40 ... 110°C
110 ... 230°F
110 ... 230°F
4
4
8
SPDT
SPDT
SPDT
SPDT
SPDT
SPDT
Internal screw
Internal screw
Internal screw
Internal screw
External knob
External knob
1000
1000
1500
1500
1500
2000
-
2, Tradeline
-
-
-
-
Manual reset
Manual reset
Manual reset
1 = High limit stop
2 = Without knob and index
3 = With mounting bracket
4 = With conduit box
5 = With cable connector
6 = Low limit stop
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L4189 - L6189 SINGLE AQUASTAT - PANEL MOUNTING (IMMERSION)
SPECIFICATIONS AND DIMENSIONS
Specifications
Ambient temperature limits
0 ... 70°C
Accessories
Immersion wells, see page 18
Electrical connections
6.3 mm spade terminals
C
1
2
C
1
+
+
Enclosure
IP40
Electrical rating
10 A at 250 Vac, resistive load
2,5 A at 250 Vac, inductive load
15 A at 250 Vac, locked motor
250 mA at 30 mVdc (special option)
SPST
SPDT
Fig. 3. Internal schematics L4189/L6189
Terminal data
C-1 breaks on temperature rise (SPDT and SPST)
C-2 makes on temperature rise (SPDT only)
Capilliary length
350 mm, 1000 mm, 1500 mm and 2000 mm
Mounting hole (2) for M4x20
tread forming screw
17
48
32
16
2 mm max
60
47.1
48
18
32
2
1
C
Panel
Hole ( 4 min.) in
panel for tool reset
28.5
85
14.4 14
48
30.5
5
Fig. 4. Dimensional drawing L4189/L6189
9
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L6190 SINGLE AQUASTAT - SURFACE MOUNTING
APPLICATION AND ORDERING INFORMATION
Application
The L6190 is a sensitive water temperature thermostat
designed for surface mounting on domestic hot water cylinders
or pipe work. The SPDT switching action is accomplished by a
snap-action microswitch actuated by the temperature sensing
element.
The L6190 is supplied complete with mounting strap for rapid
and easy installation. Draining of the system or tapping of the
cylinder or pipe work is not required. The required temperature
control point is easily set using a screw driver.
Ordering information
Application
O.S. number
Temperature
range
Switch
differential (K)
Switch type
Setting means
Strap length
(mm)
L6190A 2016
L6190B 2006
L6190B 2014
L6190B 2022
Surface mounting
Surface mounting
Surface mounting
Surface mounting
25 ... 95°C
25 ... 95°C
25 ... 95°C
25 ... 95°C
8
8
12
4
SPDT
SPDT
SPDT
SPDT
External knob
External setting
External setting
External setting
250
2000
2000
2000
4 ... 10
(adjustable)
L6190B 2030
Surface mounting
25 ... 95°C
SPDT
Internal setting
250
L6190C 2004
L6190C 2012
Surface mounting
Surface mounting
25 ... 95°C
25 ... 95°C
Manual reset
Manual reset
SPDT
SPDT
Internal setting
Internal setting
2000
2000
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L6190 SINGLE AQUASTAT - SURFACE MOUNTING
SPECIFICATIONS AND DIMENSIONS
Specifications
Ambient temperature limits
0 ... 70°C
Capilliary length
55 mm
Electrical connection
6.3 mm spade terminals or screw terminals
2
C
1
+
Enclosure
IP40
Electrical rating
10 A at 250 Vac, resistive load
2,5 A at 250 Vac, inductive load
15 A at 250 Vac, locked motor
SPDT
Fig. 5. Internal schematic L6190
Terminal data
C-1 breaks and C-2 makes on temperature rise
48
24
26.5
6
12
72
100
92
9
30
51
24
Fig. 6. Dimensional drawing L6190
11
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L4191 - L6191 DUAL AQUASTAT - DIRECT IMMERSION
APPLICATION AND ORDERING INFORMATION
Application
L4191 and L6191 are dual units in which two independently
working water temperature thermostats are housed in one
cover. Each thermostat has a separate liquid filled sensing
element which fits into a common immersion well for direct
mounting into a boiler, tank or other vessel. One thermostat,
with external temperature setting dial, acts as a controller
while the other, with internal setting dial, acts as a high limit
control.
Two main types are available, one with controller and auto
recycling high limit and the other with controller and high limit
with manual reset.
Ordering information L4191
Application
O.S. number
Temperature
range
Switch
differential (K)
Switch type
Setting means
Remarks
(see notes)
Controller
Limiter
Controller
Limiter
Controller
Limiter
Controller
Limiter
25 ... 95°C
25 ... 95°C
25 ... 95°C
25 ... 95°C
70 ... 140°C
70 ... 140°C
25 ... 95°C
25 ... 95°C
4
4
4
4
SPST
SPST
SPST
SPST
SPST
SPDT
SPST
SPDT
External knob
Internal screw
External knob
Internal screw
External knob
Internal screw
External knob
Internal screw
9
9
L4191A 2002
L4191A 2010
L4191B 2018
L4191B 2042
7 - 9 - 10
9
6
1
5 - 9 - 10
9 - 10
4
Manual reset
4
Manual reset
1 =Gold contacts for thermocouple applications, without jumper
2 =High limit stop at 80°C/low limit stop at 60°C
3 =High limit stop at 82°C
7 =With well assembly
8 =High limit stop
9 =With jumper
4 =Low limit stop at 95°C
10 =With push-in plug
11 =Without knob and index
5 =Isolated neutral terminal
6 =High limit stop at 95°C
Ordering information L6191
O.S. number
Application
Temperature
Switch
Switch type
Setting means
Remarks
range
differential (K)
(see notes)
4 ... 10
(adjustable)
Controller
40 ... 110°C
SPDT
External knob
6 - 7 - 9
L6191A 2007
Limiter
Controller
Limiter
Controller
Limiter
Controller
Limiter
40 ... 110°C
25 ... 95°C
101°C fixed
50 ... 95°C
101°C fixed
25 ... 95°C
40 ... 110°C
40 ... 110°C
40 ... 110°C
4
4
4
4
4
4
SPDT
SPDT
SPST
SPDT
SPST
SPDT
SPDT
SPDT
SPDT
Internal screw
External knob
Internal setting
External knob
Internal screw
External knob
Internal screw
External knob
Internal screw
9
3
1
3
L6191A 2015
L6191A 2023
L6191B 2005
L6191B 2013
1
7 - 9 - 10
9
5 - 6 - 7 - 9
9
Manual reset
4
Manual reset
Controller
Limiter
4 ... 10
Controller
Limiter
70 ... 140°C
70 ... 140°C
70 ... 140°C
SPDT
SPDT
SPDT
External knob
Internal screw
External knob
4 - 7 - 9
9
(adjustable)
L6191B 2021
Manual reset
4 ... 10
(adjustable)
Controller
4 - 7 - 9 - 11
L6191B 2047
L6191B 2054
Limiter
Controller
Limiter
70 ... 140°C
25 ... 95°C
50 ... 95°C
Manual reset
4
Manual reset
SPDT
SPDT
SPDT
Internal screw
External knob
Internal screw
9
7 - 10
1 =Gold contacts for thermocouple applications, without jumper
2 =High limit stop at 80°C/low limit stop at 60°C
3 =High limit stop at 82°C
7 = With well assembly
8 = High limit stop
9 = With jumper
4 = Low limit stop at 95°C
10 =With push-in plug
11 = Without knob and index
5 = Isolated neutral terminal
6 = High limit stop at 95°C
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L4191 - L6191 DUAL AQUASTAT - DIRECT IMMERSION
SPECIFICATIONS AND DIMENSIONS
Specifications
Ambient temperature limits
0 ... 70°C
C
1
C
1
C
1
2
C
1
Electrical connection
6.3 mm spade terminals
+
+
+
+
Enclosure
IP40
Electrical rating:
SPST SPST
Control Limit
SPST
Control
SPDT
Limit
10 A at 250 Vac, resistive load
2,5 A at 250 Vac, inductive load
15 A at 250 Vac, locked motor
250 mA at 30 mVdc (special option)
2
C
1
C
1
2
C
1
2
C
1
Terminal data
C-1 breaks on temperature rise
C-2 makes on temperature rise
+
+
+
+
Accessories
Immersion wells, see page 18
SPDT SPDT
Control Limit
SPDT
Control
SPDT
Control
Fig. 7. Internal schematics
14.6
11.5
ϕ 5
ϕ 47.1
85
72
30
ϕ 21
Pg 13.5
4
84
48
Fig. 8. Dimensional drawing L4191/L6191
13
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L6188A 2044 TRADELINE SINGLE AQUASTAT - DIRECT IMMERSION
APPLICATIONS AND ORDERING INFORMATION
Application
L6188A 2044 Tradeline Aquastat is a sensitive immersion-type
water temperature thermostat for regulating and limiting boiler
water temperature in hydronic heating systems.
The Honeywell Tradeline technique of using adapters enables
the L6188A 2044 Aquatat thermostat to field replace
Honeywell Aquastat thermostats as well as many competitive
devices (using the existing well*). No draining of the system is
needed. Ideal for service organisations to stock since only one
Aquastat is needed for most calls.
* If a new immersion well is needed order separately.
Ordering information L6188A 2044
O.S. number
Application
Temperature
range
Switch
differential (K)
Switch type
Setting means
Remarks
(see notes)
4 ... 10
(adjustable)
L6188A 2044
Controller
40 ... 110°C
SPDT
External knob
1
1 = High limit stop at 95°C/low limit stop at 50°C
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L6188A 2044 TRADELINE SINGLE AQUASTAT - DIRECT IMMERSION
SPECIFICATIONS AND DIMENSIONS
Specifications
Temperature range
40 ... 110°C
Accessories
Immersion wells, see page 18
Differential
4 ... 10 (adjustable)
2
C
1
+
Limit stops:
Low limit: adjustable, factory set at 50°C
High limit: adjustable, factory set at 95°C
Ambient temperature limits
0 ... 70°C
SPDT
Electrical connection
6.3 mm spade terninals
Fig. 9. Internal schematic
Enclosure
IP40
Electrical rating
10 A at 250 Vac, resistive load
2,5 A at 250 Vac, inductive load
15 A at 250 Vac, locked motor
Terminal data
C-1 breaks on temperature rise
C-2 makes on temperature rise
14.6
11.5
48
5
47.1
85
32
2
1
C
9
72
30
21
Pg 13.5
14.4
4
14
48
48
Fig. 10. Dimensional drawing L6188A 2044
15
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PERFORMANCE
Fixed switch differential
On controls and recycling limits a fixed differential of:
Ambient temperature error
Ratio of ambient error
With capilliary lenth of 1000 mm
With capilliary lenth of 50 mm
Max. setting Min. setting
4
1.5°C, 8 3°C or
12 3°C is supllied as a standard.
1 : 5.5
1 : 12
1 : 8.5
1 : 25
Optional are:
2.7°F,
Example:
7
An ambient error ratio of 1 : 6 means that an ambient
change of 6°C will cause a setpoint shift of the Aquastat of
1°C.
14 5.4°F
15 5.4°F
Adjustable switch differential
On controllers and recycling limiters an adjustable differential
of:
Time constant
• With well
4
7
1.5°C ... 10 3°C or
2.7°F ... 18 5.4°F can be supllied.
τ ≤ 30 s for panel mounted, single direct mounted, dual
direct mounted and triple direct mounted Aquastats.
• Without well
τ ≤ 4 s
• With sensor assy (Surface mounted Aquastat)
τ ± 50 s
Manual or tool reset switch differential
On the thermal cut-out versions (manual or tool reset) of the
panel mounted, the single direct mounted and the dual direct
mounted Aquastats the maximum reset differential might be
30°C
Setpoint accuracy
+0/-8°C for thermal cut-outs
NOTE: The differential (thermal) is dependant on the rate of
change of the temperature in the heating system.
The given differential datas are valid for a rate of1°C
per minute.
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CONSTRUCTION
All aquastats have the following common parts
Dual direct mounted Aquastat needs the following extra parts
• Thermoplastic housing of mainly rectangular form. This
housing is the carrier of the Micro Switch mechanism, the
6.3 mm quick connect terminals, the lever mechanism and
the adjusting mechanism.
• Two single thermoplastic conduit boxes (a right and a left
one) with cable entry.
• A dual thermoplastic front cover to protect against touching
of live parts.
• Thermoplastic switch cover, which protects the switch
• A thermoplastic top cover for covering of units with internal
mechanism and which fits in the above mentioned housing.
setting.
• Auxiliary parts to make it possible to use the quick connect
• An adjustable dial for the Micro Switch differential (if
terminals also for screw connection.
applicable).
• External circular setting knob with scale and an index or
• A bracket on the rear side of the Aquastat to connect both
internal setting with scale.
basic units together and which fits into a dual well.
• Liquid filled sensing element with or without a remote bulb.
This element is via a mounting plate connected to the rear
side of the thermoplastic housing
• Well assembly in which the bulb of the sensing elements
fits. For the dual direct mount aquastat and triple direct
mount aquastat the well is enable to contain two resp. three
bulbs.
Surface mounted Aquastat needs the following extra parts
• A thermoplastic conduit box with a cable entry
• A thermoplastic front cover to protect against touching of
live parts.
• A thermoplastic top cover with scale for covering of unit with
internal setting.
NOTE: The surface mounted Aquastat does not have a
well, but the bulb is enveloped by a sensor
assembly of mainly rectangular form which is
mounted on the rear side of the thermoplastic
housing.
• A fastening strap with fastener, to mount the Aquastat on
the surface of boiler or pipe.
Triple direct mounted Aquastat needs the following extra parts
• Three single thermoplastic conduit boxes with a cable entry.
• A dual and a single thermoplastic front cover.
• A reset button for the switch mechanism, manual or tool
reset, with exception of the surface mounted Aquastat,
which does not have such a button.
• Two thermoplastic top covers for covering of units with
internal setting.
Single direct mounted Aquastat needs the following extra parts
• An adjustable dial for the Micro Switch differential (if
• A thermoplastic conduit box with a cable entry.
applicable).
• A thermoplastic front cover to protect against touching of
• Two brackets on the rear side of the Aquastat to connect
the three basic units together and which fits into a triple
well.
live parts.
• A thermoplastic top cover for covering of units with internal
setting.
• An adjustable dial for the Micro Switch differential (if
applicable).
17
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ACCESSORIES AND SPARE PARTS
Single well assembly
Description
Ordernumber
Packing qty
(pcs)
40
1
Spud thread: / ” BSPT
45.900.409-003
2
Maximum insertion length (including thread): 105 mm
Suitable for Ø 5 mm sensor
1
Spud thread: / ” BSPT
45.900.409-006
100
2
Maximum insertion length (including thread): 170 mm
Suitable for Ø 5 mm sensor
Dual well assembly
Description
Ordernumber
Packing qty
(pcs)
20
1
Spud thread: / ” BSPT
45.900.409-007
2
Maximum insertion length (including thread): 105 mm
Suitable for two Ø 5 mm sensors.
1
Spud thread: / ” BSPT
45.900.409-008
20
2
Maximum insertion length (including thread): 105 mm
Suitable for two Ø 5 mm sensors when used with spring.
Without spring suitable for three or four Ø 5 mm sensors.
Supplied with spring
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Miscellaneous
Description
Ordernumber
Packing qty (pcs)
Knob assembly
Scale range: 110 ... 230°F, high limit stop: 180°F
45.900.427-002
200
Knob assembly
45.900.427-003
45.900.443-001
200
50
Scale range: 40 ... 110°C, high limit stop: 82°C
Strap set for L6190 surface mounted aqustat
Strap length: 2000 mm
Key
Description
Part number
number
1
2
Fixing screw for front covers of single and dual aquastats
Knob
45.002.700-001
Scale range
40 ... 110°C
70 ... 140°C
25 ... 95°C
40 ... 110°C
70 ... 140°C
40 ... 110°C
25 ... 95°C
40 ... 110°C
25 ... 95°C
70 ... 140°C
25 ... 95°C
1 ... 7 (40 ... 110°C)
50 ... 95°C
40 ... 110°C
25 ... 95°C
80 ... 100°F
110 ... 230°F
160 ... 280°F
110 ... 230°F
110 ... 230°F
Low limit stop
-
-
-
High limit stop
-
-
-
95°C
-
95°C
82°C
100°C
60°C
95°C
80°C
85°C
82°C
82°C
80°C
-
45.002.823-001
45.002.823-002
45.002.823-003
45.002.823-004
45.002.823-005
45.002.823-006
45.002.823-007
45.002.823-008
45.002.823-010
45.002.823-011
45.002.823-013
45.002.823-014
45.002.823-015
45.002.823-017
45.002.823-019
45.004.213-001
45.004.213-002
45.004.213-003
45.004.213-004
45.004.213-005
45.002.547-002
45.000.219-015
45.002.797-001
45.002.540-001
45.002.802-001
-
95°C
50°C
-
-
-
-
60°C
-
-
-
40°C
-
-
-
-
-
-
-
200°F
180°F
3
4
5
6
7
Cover for single Aquastat
Screw
Wire clamp
Conduit box
Push in plug
19
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QUALITY ASSURANCE STATEMENT
Products are manufactured under an ISO 9001 (1994) based
and certified Quality System.
Assembly processes are guided by work instructions. Patrol
inspections form part of the assembly processes.
The quality system is described in the Honeywell Combustion
Controls Center Quality Assurance Programme and its related
operational procedures and instructions.
At the end of the assembly phase, all aqustats are leakage
and performance tested/adjusted.
Assembly inspection is performed by employees of the quality
control department, using their own equipment.
The quality system is approved by Gastec against certificate
number 9.302/2.
All inspections (incoming and assembly) are performed by
trained personel and according inspection procedures.
The quality organisation is responsible for defining,
maintaining, improving and verification of the quality systems
in the field of design, production process and field quality
service.
STANDARDS AND APPROVALS
Standards
Approvals
The L41../L61.. series Aquastats have been designed
according the Low Voltage Directive 73/23/EEC.
An additional approval is obtained from DIN in Germany
according to DIN 3440 as thermostat (TR) or temperature
limiter (TW).
This Low Voltage Directive is covered by approvals in
Denmark, Finland, Norway, Sweden and Switserland.
In North-America approvals have been obtained from UL,
AGA and CSA.
EMC Directive 89/336/EEC:
The snap action switch ensures in most cases a switching
action in less than 10 ms, which satisfies EMC-Directive
without further measures.
The exception is a highly inductive low current load combined
with slow rate of temperature change, which requires
additional suppression means. For this reason compliance
with the EMC-Directive cannot be claimed.
Europen countries accept above certificates as basis for
appliance approval.
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ORDERING INFORMATION
When ordering specify
• Setting point(control and limit if necessary)
• Type of contact (SPDT/SPST/ electrical rating)
• Number of sensing point (single/dual)
• Type of mounting (direct immersion/panel/surface)
• Differential (adjustable/fixed/manual reset)
• Capillary length
Ordering Specification number
L
X A 9999
4 1 X
L: Aquastat
Specification number
Control contact:
4: SPST
6: SPDT
A: Single: knob setting
Dual: automatic reset limiter
B: Single: internal setting (screw)
Dual: manual reset limiter
C: Single: manual reset
1: Family
88: Single aquastat, direct immersion
89: Single aquastat, panel mounting
90: Single aquastat, surface mounting
91: Dual aquastat, direct mounting
92: Triple aquastat, direct mounting
Fig. 11. Model number chart
21
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Home and Building Control
Combustion Control Center Europe
Honeywell BV
Phileas Foggstraat 7
7821 AJ Emmen
The Netherlands
Tel.: +31 (-)591 695911
Fax: +31 (-) 591 695200
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