One and two stage room thermostats, Series T22SRX/T25B

Вид документа	Каталожна сторінка
Виробник	JCI
Моделі	T22SRX-9100, T22SRX-9101, T22SRX-9104, T25B-9101, T25B-9102, T25B-9103
Група обладнання	temperature
Мова документа	англійська
Розмір файлу	0.2 МБ

Про документ

Room thermostats with liquid filled sensing element for controlling heating and/or cooling equipment in commercial, industrial or residential installations. Type T22SRX is a single-stage thermostat for either heating or cooling; type T25B is a two-stage thermostat supporting two-stage heating, two-stage cooling, or heating/cooling with dead band and automatic change-over.

Ключові дані

Operating range	5 to 32 °C
Number of stages	T22SRX: 1 / T25B: 2
Differential per stage	1 K
Differential between stages (T25B)	1 to 3 K adjustable
Electrical rating	~15(3) A, 230 V
Contact function	SPDT
Ambient temp. limits	-35 to +55 °C
Enclosure protection class	IP20

Застосування

Unit heaters
Fan coils
Cooling rooms

Особливості

Liquid filled elements — accurate control and quick response
Dust tight Penn switch — prevents pollution of contacts by electrostatic influences
Small differential — no heat anticipators required
Two stage thermostats with dead band and automatic change-over, suitable for heating/cooling
Sturdy steel cover; wall mounting
Knob adjustment or concealed scale with screwdriver adjustment

Технічні дані

Parameter	Value
Product type	T22SRX / T25B
Operating range	5 to 32 °C
Number of stages	1 (T22SRX) / 2 (T25B)
Differential per stage	1 K
Differential between stages	- (T22SRX) / 1–3 K adjustable (T25B)
Adjustment	see selection table
Electrical rating	~15(3) A, 230 V
Contact function	SPDT
CE conformity	According to low voltage directive and EMC directive
Ambient temp. limits	-35 to +55 °C
Material	Steel plated case and cover; cover "tawny silver" finish; faceplates dark/light brown coloured
Enclosure (prot. class)	IP20
Shipping weight ind. pack	0.465 kg (T22SRX) / 0.570 kg (T25B)
Shipping weight overpack (24 pcs.)	11.5 kg (T22SRX) / 14 kg (T25B)

Варіанти замовлення

Order number	Range in °C	Diff. per stage in K	Diff. between stages in K	Adjustment	Remarks
T22SRX-9100	5 to 32	1	-	Knob	with thermometer
T22SRX-9101	5 to 32	1	-	Knob
T22SRX-9104	5 to 32	1	-	Concealed
T25B-9101	5 to 32	1	1/3	Knob
T25B-9102	5 to 32	1	1/3	Concealed
T25B-9103	5 to 32	1	1/3	Knob	with ~230 V signal lamp (to be wired separately)

Optional constructions (quantity orders only): custom labelling; Heat-Off-Cool selector switch (T22 only); bimetal thermometer (T22SRX-9100); signal lamp in cover (T25B-9103).

Допуски та стандарти

CE conformity according to low voltage directive and EMC directive

Позиції каталогу з цим документом

Текст документа

PSC9634 European Refrigeration Controls Catalogue
Catalog Section 1
Product Bulletin T22/25
Issue 9634

Series T22SRX/T25B
One and Two Stage Room Thermostats for Heating,
Cooling or Air-conditioning

Introduction
These room thermostats are designed to control
heating and/or cooling equipment, in
commercial industrial or residential installations.
Typical uses are for unit heaters, fan coils,
cooling rooms etc. Type T22SRX can be used
for either heating or cooling. Type T25B (2
stages) can be used for:
- two stages heating
- two stages cooling
- heating/cooling with dead band and automatic
change over

Description
These thermostats with a sturdy steel cover are
provided with a liquid filled sensing element.
This element is formed to achieve maximum
sensitivity to surrounding air temperature
changes. Coupled with a highly efficient
diaphragm and leverage mechanism, the
element operates a totally enclosed Penn switch T22SRX (right) and T25B (left) room
contact with a close differential switching action thermostats.
without the use of “heat or cool” anticipators.

Note Optional constructions
These controls are designed for use only (quantity orders only):
as operating controls. Where an operating - Custom labelling.
control failure would result in personal - Heat-Off-Cool selector switch (T22 only).
injury or loss of property it is the - Bimetal thermometer (T22SRX-9100 is
responsibility of the installer to add devices executed with a built-in thermometer).
or systems that protect against, or warn of, - Signal lamp in cover (T25B-9103 is executed
control failure. with a signal lamp).

Feature and Benefits
! Liquid filled elements. Accurate control and quick response.

! Dust tight Penn switch. Prevent pollution of the contacts by
electrostatic influences.

! Small differential. No heat anticipators required
! Two Stage Thermostats with Suitable for heating/cooling.
dead band and automatic
change-over.

Mounting Switching diagram T25
The devices are suitable for wall mounting. After (Heating Mode)
removing the cover, the mounting holes will
become visible.

B
Adjustment
T22SRX and T25B models are available with
knob adjustment or with a concealed scale, HI
screwdriver adjustment. For details see selection
table. T22SRX models have a fixed differential of
1 K. T25B models have an adjustable differential A
between stages of 1 to 3 K. LO

Contact functions A
t
3 2 C

(A) = Differential per stage (1 K).
θ> (B) = Differential between stages (adjustable 1
to 3 K).
1 (C) = Dial setting.
(T) = Temperature increase.
LO = Low stage
HI = High stage
Fig. 1
T22SRX Fig. 3
1 - 2 closes on temperature increase.

Optional construction note
q32 > q2> 2 3 2 If what you need is not in the specific type
numbering selection table, then please contact
θ2 > θ1 > your representative.

C
1
HI LO
1
Repair and replacement
Repair is not possible. In case of an improperly
functioning control, please check with your
nearest supplier. When contacting the supplier
Fig. 2 for a replacement you should state the
T25B type/model number of the control. This number
1 - 2 closes on temperature increase. can be found on the data plate or cover label.
(C) Removable jumper.

Catalogue Section 1 © 1997 Johnson Controls Inc.
Order No. PD-T22/25-E
T22/25
Issue 9634 3

Type number selection table
Order number Range Diff. per Dif. between Adjustment Remarks
in °C stage in K stages in K
T22SRX-9100 5 to 32 1 - Knob with thermometer
T22SRX-9101 5 to 32 1 - Knob
T22SRX-9104 5 to 32 1 - Concealed
T25B-9101 5 to 32 1 1/3 Knob
T25B-9102 5 to 32 1 1/3 Concealed
T25B-9103 5 to 32 1 1/3 Knob with ~230 V signal
lamp (to be wired
separately)

Dimensions (mm)
71 6 48
7
17 2

18
25

4 7
14

133 88
1

1.5

Fig. 4
T22SRX (1) Cable inlet hole

71 6 49 72
29 7

27 34

14 4

133
83

32
1
5

Fig. 5
T25B (1) Cable inlet hole

Specifications
Product type T22SRX T25B
Operating range 5 to 32°C 5 to 32°C
Number of stages 1 2
Differential per stage 1K 1K
between stages - 1-3 K adjustable
Adjustment see selection table
Electrical rating ~15(3)A, 230V ~15(3)A, 230V
Contact function SPDT SPDT
CE Conformity According to low voltage directive and EMC directive
Ambient temp. limits -35 to +55°C -35 to +55°C
Material Steel plated case and cover.
Cover “tawny silver” finish.
Faceplates dark/light brown coloured.
Enclosure (prot. class) IP20 IP20
Shipping weight ind. pack 0.465 kg 0.570 kg

overpack (24 pcs.) 11.5 kg 14 kg
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond
these specifications, consult the local Johnson Controls office or representative. Johnson Controls shall not be liable for damages
resulting from misapplication or misuse of its products.

Johnson Controls International, Inc.
Headquarters: Milwaukee, WI, USA
European Headquarters: Westendhof 8, 45143 Essen, Germany
European Factories: Lomagna (Italy), Leeuwarden (The Netherlands) and Essen (Germany)
Branch Offices: Principal European Cities.
This document is subject to change Printed in Europe

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