1
B 217 - RTE 98. Eng.
25.09.07 LB
REV. 01
We reserve the right to make changes without notice
COSTER
B 217
25.09.07 LB
REV. 01
WEATHER COMPENSATOR
FOR CONTROL OF VALVE OR BURNER
RTE 98.
Eng.
• Analogue controller for boiler plant:
– 1 modulating or On-Off output for control valve or burner
– 1 On-Off output for control pump or burner in relation to programmed times
– voltage-free output contacts
– adjustment of heating curve to compensate for weather variations in intermediate seasons
– possibility of adjusting value of desired ambient temperature by remote control
• Power supply 230 V~; installation on 144 x 144 control panel back plate
1. APPLICATION
RTE 98. controller is designed for winter compensated control in medium and large central heating plants for
premises such as:
– administrative and commercial centres
– schools and public buildings
– apartment blocks
It is suitable for all climatic zones and for any type of heating media:
– panels
– radiators
– fan coils
RTE 98. controls mixing or diverting valves operated by reversible electric actuators with three-wire control and
opening times of from 90 to 630 seconds, or the boiler burner.
2. FUNCTIONS
The main functions of RTE 98. are:
• Winter regulation of the flow temperature in relation to the outside temperature with:
– PI control action
– adjustment of heating curve to compensate for weather variations in intermediate seasons
• Modulating three-wire control or On-Off
• Control plant pump from timed programme in use
• Timed programming: 24-hour (RTE 982) or 7-day (RTE 983)
• Remote control for adjusting temperature programmed on controller
• Timed control : RTE 98 is able to control an On-Off output which operates with the program times used. It can be
used for the control of the plant circulation pump : in the Normal "Sun" periods contacts 8-10 are closed, while in
the Setback "Moon" periods contacts 8-10 are open.
4. DETECTORS & ACCESSORIES
No.
Description
Type
Sensing element Code Data sheet
No.
Description
Type
Sensing element Code Data sheet
E
SSENTIAL
ACCESSORIES
:
E
SSENTIAL
ACCESSORIES
:
1
Surface plant flow temperature detector
1
Surface plant flow temperature detector
SCH 010
NTC 10 k
Ω
B1
N 130
or immersion
or immersion
SIH 010
NTC 10 k
Ω
B1
N 140
1
Outside temperature detector
1
Outside temperature detector
SAE 001
NTC 1 k
Ω
B2
N 120
O
PTIONAL
ACCESSORIES
:
O
PTIONAL
ACCESSORIES
:
1
Remote control
1
Remote control
CDB 340
–
R
N 711
No.
Description
Type
Sensing element Code Data sheet
E
SSENTIAL
ACCESSORIES
:
1
Surface plant flow temperature detector
or immersion
1
Outside temperature detector
O
PTIONAL
ACCESSORIES
:
1
Remote control
No.
Description
Type
Sensing element Code Data sheet
No.
Description
Type
Sensing element Code Data sheet
NTC 10 k
NTC 10 k
NTC 1 k
–
R
N 711
No.
Description
Type
Sensing element Code Data sheet
B1
N 130
B1
N 140
B2
N 120
–
R
N 711
No.
Description
Type
Sensing element Code Data sheet
B1
N 130
B1
N 140
B2
N 120
–
R
N 711
3. VERSIONS
Code
Description
RTE 982
Compensating controller with 24-hour time switch
RTE 983
Compensating controller with 7-day time switch
Code
Description
Code
Description
Compensating controller with 7-day time switch
Time switch:
– power reserve
100 h
– dial
4-hour or 7-day
– minimum daily interval
15 min.
– minimum weekly interval
24 h
Suitable actuators
90...630 s
Room temperature:
– operating
0...+45 °C
– storage
– 25...+60 °C
Room humidity
Class F (DIN 40040)
Protection
IP 40
Weight
1.2 Kg
5. TECHNICAL DATA
Power supply
230 V~± 10%
Frequency
50...60 Hz
Consumption
4 VA
Electromagnetic compatibility
CEE 93/68
Output contacts:
– maximum switched voltage
250 V~
– maximum switched current
5 (1) A
Setting ranges:
– Normal and Setback ambient temperature
0...30 °C
– K factor
0.5...3.5
– adjustment C curve
± 5 °C
