Install Instructions

APPENDICES
OPTION 3: VisionPRO IAQ Wiring with Fan Delay
• Follow this diagram if you are using VisionPRO IAQ with TrueSTEAM’s fan-delay feature.
• The system fan will turn on when the water temperature reaches 176°F (80°C).
• Set installer setup #0374 to 3.
OPTION 4: VisionPRO IAQ without Fan Delay
• Follow this diagram if using VisionPRO IAQ to turn system fan on immediately with humidity call.
• Set installer setup #0374 to 1.
6
543
2
On
Off
1
AFS Monitor Recommended
M32914
6
543
2
On
Off
1
AFS Monitor Recommended
M32915
TH9421C
Tr ueSTEAM
C7089U
THM5421C
COMMUNICATION
LED
FURNACE
CONV
M33053
TH9421C
Tr ueSTEAM
AFS
C7089U
THM5421C
COMMUNICATION
LED
FURNACE
CONV
M33052
TrueSTEAM Humidication System 69-2285—05
57
B: Advanced TrueSTEAM Wiring