Electric Preheating Coil (Prehclel21Y) - Siemens Climatix S300 HRV Application Manual

Application functionalities
5
Preheating Functions

5.14.3 Electric Preheating Coil (PreHclEl21y)

Available parameters
124 | 170
The electrical preheating coil contains a temperature sensor TSuAfPreHcl before
heat recovery and an overtemperature detector. The control is carried out
continuously via an analog output, pulsed via a triac output or switched via a binary
output. The setpoint for TSuAfPreHcl is influenced by the outdoor air temperature
TOa. The curve settings can be configured. If the ERC is defrosted, the setpoint
can be increased to a configurable defrost setpoint.
For safety reasons, the overtemperature detector switches off the electric heater
and the entire HRV plant (A alarm).
The overtemperature detector must be connected to the electric heater via
hardware unless local regulations allow software interlock.
Actual values
Electric preheater position
Electric preheater command
Supply air temperature after preheater
Preheating coil overtemperature detector
BACnet object
PreHclElPos
AO,63(Y1)
AO,104 (A1)
AO,113 (A2)
AO,122 (A3)
AO,131 (A4)
AVAL,383 (POS9)
AVAL,472 (AO1)
AVAL,479 (AO2)
PreHclElCmd
BO,52 (Q1)
BO,67 (Q2)
BO,82 (Q3)
BVAL,243 (POS9)
TSuAfPreHcl
AI,56 (B3)
AI,62 (B4)
AI,78 (X8)
AVAL,315 (POS9)
PreHclOvrTDet
BI,74 (D1)
BI,91 (D2)
BI,108 (X3)
BI,125 (X8)
A6V10733786_en_c
R/RW Note
RW
RW
R
R