Danfoss ST-S2 User manual

Installation Guide

Safety thermostats ST-S2

Danfoss Heating VI.IA.N1.02 DH-SMT/SI

ENGLISH Safety thermostats ST-S2 www.danfoss.com Page 3

①

❶❷

❸➍

ST-S2

①

+−

❺❻

①

②

①

329

49 7

101~18

G⁄" B ISO 228/1

PG 11

Ø8 Cu

100

ST-S2

Installation Guide Safety thermostats ST-S2

DH-SMT/SI VI.IA.N1.02 Danfoss Heating

Installation Guide Safety thermostats ST-S2

Danfoss Heating VI.IA.N1.02 DH-SMT/SI

ENGLISH

Safety Note

To avoid injury and damage to persons

and devices, it is absolutely necessary

these instructions are carefully read

and observed prior to assembly and

commissioning.

Necessary assembly, start-up, and

maintenance work must be performed

only by qualied, trained and authorised

personnel.

Prior to assembly and maintenance work

on the controller, the system must be:

- depressurized

- cooled down

- emptied

- cleaned

Please comply with the instructions of the

system manufacturer or system operator.

This installation procedure describes as

follow must be performed exclusively

by qualied personnel in respect to the

security norms and dispositions of the

current standards.

Disposal instruction

This product should be

dismantled and its

components sorted, if

possible, in various groups

before recycling or disposal.

Always follow the local disposal

regulations.

Installation

Disconnect the mains before performing

any operation!

Verify the thermostat technical data

(power supply, contact rating, etc...) are

suitable to the installation conditions.

❶ Unscrew the three xing screws and the

cap ①, then remove the cover.

❷ Wire the thermostat according to

wiring diagram.

Terminals:

1 Opens the circuit when temperature

increases

2 Closes the circuit when temperature

increases

C Common

Ground

❸ Adjust the temperature set-point

thermostat by rotating the cam ①

❶ Put the cover back in place adjusting

the knob so that it slides on the control

thermostat adjustment pin. Then tighten

the cap ① and the three screws.

➍ Place of installation of immersion

pocket must be chosen in a way that the

temperature of the medium is directly

taken without any delay.

❺ Immerse the temperature sensor into

the immersion pocket in its full length.

When using immersion pockets longer

then 100 mm rst carefully pull enough

capillary tube out of the housing. Capillary

tube may not be twisted or buckled! After

inserting temperature sensors lock the

housing tightening the screw①

❻ In order to reset the thermostat,

unscrew the cap ① and push the reset

button ②.

Note:

Reset allowed for temperature values from 15

to 25 °C below Tsetpoint

Installation Guide Safety thermostats ST-S2

VI.IA.N1.02 Produced by Danfoss A/S © 07/2010

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