Honeywell Thermostat 1EN2R 9005 0406R3 NE User Manual

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

EN2R-9005 0406R3-NE

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.

EN2R-9005 0406R3-NE

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

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

EN2R-9005 0406R3-NE

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.

EN2R-9005 0406R3-NE

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

25 ... 95°C

40 ... 110°C

25 ... 95°C

40 ... 110°C

25 ... 95°C

SPST

External knob

Internal screw

4 - 5

4 ... 10

L6188A 2002

L6188A 2010

L6188A 2028

L6188A 2036

Controller

25 ... 95°C

40 ... 110°C

25 ... 95°C

70 ... 140°C

SPDT

External knob

(adjustable)

4 ... 10

(adjustable)

4 ... 10

(adjustable)

4 ... 10

(adjustable)

4 ... 10

L6188A 2044

L6188B 2000

L6188B 2018

Controller

40 ... 110°C

25 ... 95°C

70 ... 140°C

SPDT

External knob

Internal screw

Tradeline 1 - 7

(adjustable)

4 ... 10

(adjustable)

3 - 7

4 ... 10

L6188B 2026

L6188B 2034

Controller

40 ... 110°C

25 ... 95°C

SPDT

Internal screw

(adjustable)

4 ... 10

(adjustable)

6 - 7

L6188B 2042

L6188C 2008

L6188C 2016

Controller

Limiter

25 ... 95°C

70 ... 140°C

25 ... 95°C

SPDT

Internal screw

Manual reset

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

EN2R-9005 0406R3-NE

L4188 - L6188 SINGLE AQUASTAT - DIRECT IMMERSION

Specifications

Ambient temperature limits

0 ... 70°C

Immersion wells, see page 18

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

47.1

Pg 13.5

14.4

Fig. 2. Dimensional drawing L4188/L6188

EN2R-9005 0406R3-NE

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

25 ... 95°C

100 ... 230°F

25 ... 95°C

SPST

SPDT

External knob

Internal screw

External knob

1000

1500

1000

350

1000

1500

1 - 4 - 5

1 - 6

4 ... 10

L6189A 2043

L6189A 2068

L6189A 2092

L6189A 2118

L6189A 2134

L6189A 2142

L6189A 2159

Controller

40 ... 110°C

25 ... 95°C

SPDT

External knob

1500

1000

1500

2000

(adjustable)

7 ... 18°F

(adjustable)

15°F

7 ... 18°F

(adjustable)

15°F

110 ... 230°F

7 ... 18°F

(adjustable)

L6189B 2009

L6189B 2025

L6189B 2041

L6189C 2007

L6189C 2023

L6189C 2031

Controller

Limiter

25 ... 95°C

40 ... 110°C

110 ... 230°F

SPDT

Internal screw

External knob

1000

1500

2000

2, Tradeline

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

EN2R-9005 0406R3-NE

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

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

2 mm max

47.1

Panel

Hole ( 4 min.) in

panel for tool reset

28.5

14.4 14

30.5

Fig. 4. Dimensional drawing L4189/L6189

EN2R-9005 0406R3-NE

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

25 ... 95°C

SPDT

External knob

External setting

250

2000

4 ... 10

(adjustable)

L6190B 2030

Surface mounting

25 ... 95°C

SPDT

Internal setting

250

L6190C 2004

L6190C 2012

Surface mounting

25 ... 95°C

Manual reset

SPDT

Internal setting

2000

EN2R-9005 0406R3-NE

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

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

26.5

6⁶

100

Fig. 6. Dimensional drawing L6190

EN2R-9005 0406R3-NE

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

70 ... 140°C

25 ... 95°C

SPST

SPDT

SPST

SPDT

External knob

Internal screw

External knob

Internal screw

External knob

Internal screw

External knob

Internal screw

L4191A 2002

L4191A 2010

L4191B 2018

L4191B 2042

7 - 9 - 10

5 - 9 - 10

9 - 10

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

SPDT

SPST

SPDT

SPST

SPDT

Internal screw

External knob

Internal setting

External knob

Internal screw

External knob

Internal screw

External knob

Internal screw

L6191A 2015

L6191A 2023

L6191B 2005

L6191B 2013

7 - 9 - 10

5 - 6 - 7 - 9

Manual reset

Controller

Limiter

4 ... 10

Controller

Limiter

70 ... 140°C

SPDT

External knob

Internal screw

External knob

4 - 7 - 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

SPDT

Internal screw

External knob

Internal screw

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

EN2R-9005 0406R3-NE

L4191 - L6191 DUAL AQUASTAT - DIRECT IMMERSION

SPECIFICATIONS AND DIMENSIONS

Specifications

Ambient temperature limits

0 ... 70°C

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)

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

ϕ 21

Pg 13.5

Fig. 8. Dimensional drawing L4191/L6191

EN2R-9005 0406R3-NE

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 = High limit stop at 95°C/low limit stop at 50°C

EN2R-9005 0406R3-NE

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)

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

47.1

Pg 13.5

14.4

Fig. 10. Dimensional drawing L6188A 2044

EN2R-9005 0406R3-NE

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

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:

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

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.

EN2R-9005 0406R3-NE

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).

EN2R-9005 0406R3-NE

ACCESSORIES AND SPARE PARTS

Single well assembly

Description

Ordernumber

Packing qty

(pcs)

Spud thread: / ” BSPT

45.900.409-003

Maximum insertion length (including thread): 105 mm

Suitable for Ø 5 mm sensor

Spud thread: / ” BSPT

45.900.409-006

100

Maximum insertion length (including thread): 170 mm

Suitable for Ø 5 mm sensor

Dual well assembly

Description

Ordernumber

Packing qty

(pcs)

Spud thread: / ” BSPT

45.900.409-007

Maximum insertion length (including thread): 105 mm

Suitable for two Ø 5 mm sensors.

Spud thread: / ” BSPT

45.900.409-008

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

EN2R-9005 0406R3-NE

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

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

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

Low limit stop

High limit stop

95°C

82°C

100°C

60°C

95°C

80°C

85°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

Cover for single Aquastat

Screw

Wire clamp

Conduit box

Push in plug

EN2R-9005 0406R3-NE

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.

EN2R-9005 0406R3-NE

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

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

EN2R-9005 0406R3-NE

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

http://europe.hbc.honeywell.com

EN2R-9005 0406R3-NE

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