Honeywell Steam Humidifier - Page 66

APPENDICES
OPTION 13: Prestige IAQ controlling 2 Steam Humidiers
AFS
6
543
2
ON
OFF
1
AFS MONITOR RECOMMENDED
M33058B
STEAM
HUMIDIFIER 1
FURNACE
THX9421R5005
STEAM
HUMIDIFIER 2
A DOUBLE-POLE RELAY SUCH AS THE R8228D1018 IS REQUIRED.
AN AIR-FLOW SWITCH IS RECOMMENDED. IF AN AIR FLOW SWITCH IS
NOT USED THERE DOES NOT NEED TO BE A WIRE ATTACHED TO C ON
THE STEAM HUMIDIFIER AND THE #4 DIPSWITCH NEEDS TO BE SET TO
“ON”.
GT IS NOT REQUIRED FOR THIS APPLICATION. SINCE THE PRESTIGE IAQ
THERMOSTAT DOES NOT HAVE A Y/G INTERCONNECT, P
ARALLEL WIRING
CAN BE DONE (AS SHOWN).
HM609 OR HM612 STEAM HUMIDIFIERS CAN BE USED.
THE U1, U2, OR U3 CONTACTS CAN BE CONFIGURED TO CONTROL A
HUMIDIFIER. IN THIS DIAGRAM THE 1 TERMINALS ARE USED.
CONFIGURE THE THERMOSTAT TO HUMIDIFY INDEPENDENT OF FAN
(INSTALLER SETUP 374 SET TO 3).
1
2
3
4
5
6
6
5
1
2
5
3
3
4
IAQ
DEVICE
THM5421R1005
SENSOR TYPE
Steam Humidier System 69-2285—09
64
B: Advanced Steam Humidier Wiring