Danfoss AVTB Data sheet

Data sheet

Temperature controller AVTB (PN 16)

Description AVTB is self-acting temperature controller used

to control the water temperature in hot water
tanks, heat exchangers, oil preheaters, etc.
Controller closes on rising temperature.

The controller has a control valve, thermostatic
actuator and handle for temperature setting.
Thermostatic actuator consist of a bellows,
capillary tube and sensor.

Main data:

• DN 15, 20, 25

• kVS 1.9; 3.4; 5.5m3/h

• PN 16

• Setting range:
0 … 30°C/20 … 60°C/30 … 100°C

• Temperature:

- Circulation water/glycolic water up to 30%:

2 … 130°C

• Connections:

- Int. thread

- Ext. thread (weld-on and ext. thread

tailpieces)

• Flow or return mounting, depending on
sensor type.

Ordering

1)

Complete control ler including sensor

stuffi ng box. The immersion p ocket is
an accessor y.

2)

Including sma ll sensor Ø 9.5 × 180.

The sensor is to be m ounted where the
system tempe rature is warmer than
the temperatu re in the valve housing.
Insulaton disk is fac tory mounted on
the controller.

3)

Including sma ll sensor Ø 9.5 × 150.

Capillar y tube length 2.3 m.

4)

Including se nsor Ø 18 × 210; available

on request

Example:
Temperature controller; DN 15;
kVS 1.9; PN 16; setting range
30 … 100°C; T

- 1× AVTB DN 15 Controller
Code No: 0 0 3N5141

Option:

- 1× Imm. pocket, brass
Code No: 013U 029 0

- 1× Weld-on taipieces
Code No: 003H6908

130 °C; ext. thread

max

AVTB Controller

DN

15

20

25

Capillary tube length: 2 m.

Setting

range

(°C)

0 … 30

20 … 60 90 003N8229

30 … 100 130 003N 8141

0 … 30

20 … 60 90 003N8230

30 … 100 130 003 N8142

0 … 30

20 … 60 90 003N8253

30 … 100 130 003N8143

k

VS

(m3/h)

1.9

3.4

5.5

Max. se nsor

temp.

(°C)

55

55

55

Internal thread External thread

Connection

IS O 7/1

Rp ½

Rp ¾

Rp 1

Code No.

003N2232

003N3232

003N4232

1)

4)

2)

3)

4)

2)

3)

4)

2)

3)

Connection

ISO 228/1

Service kits

Type designation for Code No.

Repair set

Two diaphragms, two O-rings, one rubber cone,
one tube of grease and eight valve cover screws

Thermostatic actuator 0 … 30 °C, sensor Ø 18 × 210, 2m 003N0075

Thermostatic actuator 20 … 60 °C, sensor Ø 9.5 × 180, 2m 00 3N0130

Thermostatic actuator 30 … 100 °C, sensor Ø 9.5 × 150, 2.3m 00 3N0131

Housing of sensor stuffing box, R ½ × M14 × 1 mm, rubber EPDM Ø 12.6 × 4 × 6 mm 013U 8102

1)

For thermostatic a ctuators 20 … 60°C and 30 … 100° C; code includes housing an d gasket of sensor stuffi ng box

Code No.

003 N5101

G ¾ A

G 1 A

G 1¼ A

DN 15 003N4006

DN 20 003N4007

DN 25 003N4008

00 3N 5114

00 3N5141

003 N5102

00 3N 5115

00 3N5142

003 N5103

00 3N 5116

003N5143

1)

4)

2)

3)

4)

2)

3)

4)

2)

3)

1)

© Danfoss | 2018.04 VD.JK.Z4.02 | 1

Data sheet Temperature controller AVTB (PN 16)

Ordering (continuous)

Technical data

Accessories

Picture Type designations DN Connection Code No.

15

Weld-on taipieces

External thread taipieces

Immersion pocket

Insulation disk

1)

For details see “ Installation positions” sec tion

Nominal diameter DN 15 20 25

k

value m3/h 1.9 3.4 5.5

VS

Cavitation factor z 0.4

Nominal pressure PN 16

Max. differential pressure bar 10

Medium Circulation water/glycolic water up to 30%

Medium pH Min. 7, max. 10

Medium temperature

Connections

Materials

Valve body

Valve seat Cr Ni steel, DIN 17440, W.No. 1.4301

Valve cone NBR-rubber

Spindle Dezincing-free brass, BS 2872/CZ132

Other metal parts Dezincing-free brass, BS 2874/CZ132

Diaphragms, O-rings EPDM-rubber

Temperature sensor Copper

Sensor charge

1)

o

valve Internal and external thread

tailpieces Weld-on and external thread

internal thread MS 58, hot-pressed, DIN 17660, W.No. 2.0402, CuZn40Pb2

external thread Dezincing-free brass, BS 2872/CZ132

20 003H6909

25 00 3H6910

15

20 R ¾” 003H6903

25 R 1” 003H6904

Rp ½ × M14 × 1 mm, brass 182 mm, without sens.stuff. box

Rp ½ × M18 × 1.5 mm, st. steel 182 mm, with sens.stuff. box

Rp ¾ × M22 × 1 mm, brass 220 mm, with sens.stuff. box

Rp ¾ × M22 × 1 mm, st. steel 220 mm, with sens.stuff. box

C 2 … 130

0 … 30 oC R 152 A, C2H4F2

20 … 60 oC Butane R600, C4H10

30 … 100 oC Carbon dioxide, CO2

Con. ext. thread acc. to

EN 10226 -1

-

R ½” 003H6902

003H6908

013U 0290

003 N0196

003N0050

003 N0192

003N4022

Application principle

Slow control system, setting range 30 …100°C
Fast control system, setting range 0 … 30°C/20 … 60°C

2 | VD.JK.Z4.02 © Danfoss | 2018.04

Data sheet Temperature controller AVTB (PN 16)

Installation positions Temperature controller

The controller can be installed in any position,
with flow in the direction of the cast-in arrow.

AVTB 20 … 60 must always be installed in the
return line (sensor warmer than valve).

If AVTB 20 … 60 has been installed in the return
line from a service water heat exchanger (where
for certain periods the return temperature
approaches the sensor temperature) the
installation of insulation disk is recommended
(003N4022).

Insulation disk is factory mounted

on the product.

Temperature sensor

AVTB 0 … 30 and 30 …100 can be installed either
in flow or in return line.

With AVTB 30 … 100, if temperature variations
of more than 20°C occur at the valve, insulation
disk (003N4022) must be installed between
thermostatic actuator and valve body.

o

f

r

r

m

e

a

p

t

s

e

B

n

c

e

Sizing

Sensor Ø 18 × 210 mm

2)

Sensor Ø 9.5 × 180 mm1) Sensor Ø 9.5 × 150 mm

(AVTB 0 … 30 °C) (AVTB 20 … 60 °C) (AVTB 30 … 100 °C)

1)

The sensor is to be m ounted where the system temp erature is warmer than the temp erature in the valve body

2)

The sensor can be m ounted where the system temp erature is either warmer or col der than the temperature in th e valve body

2)

VD.JK.Z4.02 | 3© Danfoss | 2018.04