1 Service
Freeze Protection Burner On
If running the pumps does not prevent the inlet temperature from falling closer to freezing, the SMART TOUCH control will fire the burner at low fire if in the ON state. The installer can adjust the temperature at which the burner fires by adjusting parameter F4.
Freeze Protection Burner Differential
Once the burner has started firing due to a low inlet temperature, the inlet temperature must increase by this amount before the burner turns back off. The installer can adjust this differential by accessing parameter F5.
HWG/SH Switching Time
When a boiler has a HWG demand and it receives a space heating demand, the SMART TOUCH control will start a timer. Once the timer expires, it will stop the HWG demand and service the space heating demand. The installer can adjust the length of time the boiler will service the HWG demand by accessing parameter F6.
SH/HWG Switching Time
When a boiler has a space heating demand and it receives a HWG demand, it will immediately switch to the HWG demand and start a timer. Once the timer has expired, the boiler will switch back to the space heating demand and start another timer. Once this timer expires, it will switch back to the HWG demand. The installer can adjust the length of time the boiler will service the space heating demand by accessing parameter F7.
Once a SH demand has been satisfied, a set amount of time must elapse before the control will respond to a new SH demand. The control will block the new heat demand and
The control will bypass the
Service Manual
HWG Rate Liming (NOT AVAILABLE AT THIS TIME)
This parameter determines the maximum rate to be used when heating a HWG tank. This setting may be used when the tank is unable to accept all of the BTU’s available from the boiler. This parameter may be adjusted by the installer by accessing parameter F10.
Service Mode Timeout
The Service Mode allows the installer to set the unit to any firing rate for the purpose of combustion analysis. The delay sets the length of time the boiler will stay in the Service Mode if no keys have been pressed before going back to its original state. This parameter can only be changed by the installer by accessing parameter F11.
Controlling Sensor
The SH controlling sensor parameter selects the sensor the control will use to regulate the boiler firing rate. This parameter is adjustable by the installer by accessing parameter F12. The sensor selections are as follows: The outlet sensor regulates the firing rate based on the outlet water temperature of the boiler and the inlet sensor regulates the firing rate based on the inlet water temperature of the boiler. If the outlet sensor is selected, and the optional system supply sensor is connected, the control will regulate the firing rate based on the system supply sensor temperature.
Inlet Control Time Delay
When the inlet sensor is selected as the controlling sensor, the SMART TOUCH control will start by controlling the outlet/ system supply temperature to the SH set point. After a time delay, the control will start to increase and regulate the system supply temperature in order to maintain the inlet/system return temperature to the SH set point. This time delay should be long enough for the heated water to work its way through the system loop and be measured by the inlet/system return sensor. This time delay is adjustable by the installer by accessing parameter F13.
G/H: SH/HWG Night Setback
The installer may adjust the space heating night setback offset by accessing parameter G1 and the HWG night setback offset by accessing parameter H1.
Once the internal clock has been set correctly, the SH night setback feature can be used to program a lower set point. The value of this parameter will be subtracted from the normal set point to determine the set point used during night setback. This parameter can be changed by the user or the installer by accessing parameters G2 through G15 and H2 through H15. The temperature range for this parameter is 0°F to 90°F (50°C). The feature is turned off with a setting of 0°F.
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