Centrometal PelTec 12 Technical Instructions page 26

Configuration CRO / BUF, DHC || DHW (2)
NOTE: USED ONLY IN CASCADES AND EXTERNAL CONTROL
Scheme 11. Configuration CRO / BUF
Version 1: (display shows 1 temperature, eg hydraulic crossover)
NOT POSSIBLE AT 69/96 boiler
10
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
Possible control:
- manually (ON/OFF)
- by scheduled starting times
- by external controller (START/STOP)**
- by cascade manager **
- by external controller (start/stop) + cascade manager**
* Note: Connecting the sensor 9 (version 1) and 7,8 (version 2) is not required because these temperatures are only
informative, if sensors are not connected, regulation will show temperature " - °C". The boiler regulation will not report
any error even if the sensors are defective.
NOTES:
- in this configuration PelTec-lambda 69/96 boiler works only with CM2K module which must be installed and
configurated
- in this configuration at PelTec-lambda 69/96 boiler shown is only Accumulation tank i.e. 2 sensors
(at selection -/BUF)
- In this configuration is possible to upgrade up to 4 unit "CM2K module for regulation 2 heating circuits".
- In this configuration is possible to connect external control (external start)
Scheme 12. Configuration DHC || DHW(2)
12
1
5
1 - Boiler PelTec / PelTec-lambda
2 - Air self-venting group 2,5 bar
3 - Motor 4-ways mixing valve
4 - Closed type expansion vesse
5 - Return flow temperature sensor
6 - Main flow temperature sensor
26
2
bar
9
M
6a
4
3
Required sensors: - return flow temp. sensor
2
bar
6
M
3
4
11
P1
Version 2: (Display shows 2 temperatures (eg. accumulation tank)
AT 69/96 BOILER ONLY OPTION
10
1
5
P1
6a - Hydraulic crossover / 6b - Accumulation tank
7 - Accumulation (buffer) tank sensor (upper)*
8 - Accumulation (buffer) tank sensor (lower)*
9 - Hydraulic crossover sensor*
10 - Outdoor temperature sensor
- hydraulic crossover sensor (only in version 1)
- accumulation (buffer) tank sensor (upper)(only in version 2)
- accumulation (buffer) tank sensor (lower)
Imposible control:
- by room thermostat
Required sensors: - return flow temp. sensor
10
P2
P3
8
CW
7 - DHW tank
8 - DHW tank sensor
9 - Heating circuit
10 - Room thermostat
11 - Hydraulic crossover
12 - Outdoor temperature sensor
Technical instructions PelTec-lambda
bar
2
6b
7
M
8
3
4
**
Additional equipment
- main flow temperature sensor
- DHW sensor
9
7