Heat exchanger protection
If the slope temperature felt by the CH supply sensor is greater of Heat exchanger protection parameter, a fault is generated due to the lack of water of the system. When the temperature felt by the CH supply sensor goes down under the 113°F, the boiler comes back into the normal operation. Each CH or Installer Test mode demand the function is disabled for the first 12 seconds starting from Gas valve opening moment. Each DHW demand the function is disabled for the first 20 seconds starting from Gas valve opeming moment. Except for Comfort Mode if DHW configuration parameter is set to 1: in this case, the function is active as soon as the GAs valve opening moment. In case DHW configuration parameter is set to 1 and in case of DHW mode is running and installer test mode demand is created, the function is disabled for the first 12 seconds.
