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• TrueSTEAM sends this signal when water temperature in the tank is at 170°F (just before boil). This ensures room temperature air isn’t
circulated through the home prior to steam production thus avoiding cold drafts in the home.
• Wire TrueSTEAM R to HVAC system R.
• If DIP-4 is up, TrueSTEAM does not validate R and C system power before initiating a humidity call. If DIP-4 is down, TrueSTEAM will verify R
and C system power before allowing humidity call to initiate. Humidity will not be allowed if HVAC system power is not available.
Fan activation from the thermostat
• To do this, the thermostat must have the ability to operate the system fan and a humidier.
— This can be integrated in one thermostat for system and humidier operation or separate controls for the HVAC system
and humidier. Each have their own recommended set-up, illustrated below.
• In the thermostat installer setup, there are options to wait for the thermostat to turn on the system fan before allowing humidication or to
force the system fan on when there is a demand for humidity.
Thermostat fan signals: From the
thermostat will travel through Gt to Gf to the
HVAC system G. Humidity is allowed if that
signal is present from the thermostat.
If the thermostat G signal is not present:
The TrueSTEAM will send power through Gf to
HVAC system G to ensure there is airflow for
humidity production, when humidity is needed.
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