17
WIrING
What happens if done wrong?
• The most common mistake in Power Monitoring is incorrect positioning of the DIP-4 switch. If you leave DIP-4 in its default position (down),
TrueSTEAM will look for power at its R and C terminals. If this R/C wire connection is not present, and DIP-4 is down, then TrueSTEAM’s fault
notification ‘Call Service’ light will activate and humidity output will not start.
• If DIP-4 is up, TrueSTEAM will not look for power at the R and C terminal, even if it is wired up. It is critical for the contractor to understand
that if DIP-4 is up, TrueSTEAM itself is ignoring Power and Airflow Monitoring. Therefore, an alternative source must be installed. Such as a
thermostat that receives R and C power from the system transformer, and controls humidification.
How do I troubleshoot the Power Monitoring?
• Unplug the TrueSTEAM line cord, and remove the TrueSTEAM cover.
• Check to see if DIP-4 is UP or DOWN. If DOWN, ensure the TrueSTEAM R and C terminal are wired to the HVAC system R and C terminals.
This is needed to ensure a fault mode doesn’t occur.
• If DIP-4 is UP, make sure the humidier control (thermostat) is powered by the system transformer to ensure the humidier isn’t running
without the system having power.
II. Air Proving - System Fan Activation
What is it?
A centrally ducted humidifier like TrueSTEAM requires air movement via the HVAC system fan to push humidity into the living space. The
system fan is controlled through its G-terminal. TrueSTEAM can be wired to monitor when the system G terminal is energized – indicating there
is air flow in the duct. If airflow is not present and humidity is demanded by the control, TrueSTEAM can be configured to energize the HVAC
system G when humidity is needed.
How does it work?
Fan activation can be done in two ways – through the TrueSTEAM or through a thermostat that has built-in humidifier control, such as
VisionPRO IAQ or Prestige
TrueSTEAM Fan Enforcement
• Break the G connection between the thermostat G and the HVAC system G
— Thermostat G goes to TrueSTEAM Gt terminal.
— HVAC system G goes to TrueSTEAM Gf terminal.
To Next Page
Loading...
Need help?
General
