21
WIrING
— In a manual humidistat, such as H8908
• Because the humidier control is separate from the HVAC system control (thermostat) in this situation, it is
necessary to power monitor and ensure system fan operation from TrueSTEAM.
• On TrueSTEAM, set DIP-4 down.
• Disconnect thermostat G from HVAC system G
• Wire TrueSTEAM
• R and C to HVAC system R and C.
• Gf to HVAC system G
• Gt to Thermostat G
• HUM-HUM to H8908 HUM-HUM
Wiring TrueSTEAM with H8908ASPST