Honeywell TrueSTEAM HM506 Installation Manual page 20

STEP THREE: Make Add-On Air Proving Decision
In addition to monitoring system power and fan regulation, TrueSTEAM can monitor physical air movement
through an optional add-on air proving device. If an air proving device is added, TrueSTEAM can create steam
only if the fan is moving air through the supply duct.
[
Note: This image is not a complete wiring diagram. It onJy depicts add-on air proving.
See 'Wirir_g the TrueSTEAM" on page 19.
TrueSTEAM
HVAC System
R R
C C
WIRING BASICS
• Wire TrueSTEAM R and C to HVAC system
R and C with an air proving device in-line
on C.
Configure air proving through DiP 5 on
TrueSTEAM. Set DiP 5 up and keep
DiP 4 down.
TrueSTEAM will look for physical air
movement through its C connection before
steam enters the duct.
18 TrueSTEAM Humidification System 69-2285EF--01