Centrometal PelTec 12-48 Technical Instructions page 34

Temperature (configuration hidraulic crossover or accumulation tank)
CONFIGURATION 11 - (CRO / BUF) (used only in cascades and external start)
Scheme of configuration
Scheme 11. Configuration CRO / BUF
Version 1: (display shows 1 temperature, eg. hidraulic crossover)
1
5
P1
1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vessel
5 - Return flow temperature sensor
Connecting the temp. sensor 9 (version 1) and temp. sensors 7, 8 (version 2) is not required for operation of the boiler.
These temperatures are only informative, only to see the temperatures and they don't affect boiler operation. If temp.
sensors are not connected, regulation will show temperature " - °C". The boiler regulation will not report any error even if
the sensors are or defective.
NOTES:
- In this configuration is possible to upgrade up to 4 unit "CM2K-P module for regulation 2 heating circuits".
- In this configuration is possible to connect external control (external start).
On the screen
120°C
30%
80°C
1700
15k
0%
When ''1 Temperature'' is selected, screen shows hydraulic crossover with 1 temperature.
If ''2 Temperatures'' is selected, screen shows accumulation tank with 2 temperatures.
This option can be changed only by authorized serviceman.
10.1.2 temp displays
2 Temperatures
34
2
bar
M
6a
4
3
60°C
60°C
Factory:
1 Temperature
1 Temperature
2 Temperatures
Technical instructions REGULATION PelTec / PelTec-lambda
Version 2: (Display shows 2 temperatures (eg. accumulation tank)
9
1
6a - Hydraulic crossover
6b - Accumulation tank
7 - Accumulation tank sensor 1 (upper)
8 - Accumulation tank sensor 2 (lower)
9 - Hydraulic crossover sensor
120°C
80°C
1700
15k
10.1.2 temp. displays
2 Temperatures
bar
2
M
3
4
5
P1
30%
60°C
0%
Factory:
1 Temperature
1 Temperature
2 Temperatures
6b
7
8
70°C
50°C