Honeywell Prestige THX9321 System Installation Manual page 3

O
®
THX9321/9421 Prestige _ IAQ and RF ElM
Install thermostat
THX9421 : Mount the thermostat and wire to O and R terminals of the
MCR32387
Equipment Interface Module (ELM), or to a separate 24 volt transformer (not
provided).
THX9321: Install and wire as above if using ElM. if not, see pages 13=15.
When used withthe ElM, the relays in the thermostat do not function,
O Install Equipment Interface Module (if used)
[If no ElM is used, skip to Section 3.]
Use screws & anchors as appropriate for the mounting surface. Mount the ElM
near the HVAO equipment, or on the equipment itself.
strip 1/4"insulation,theninsert wires as shown.
NOTE: If you install more thanone thermostat and
ElM, the ElMs must be at least2 feet apart,
MCR32389
If installinga discharge/return air sensor, it must
be located betweenthe IAQ equipmentand the
heating/coolingequipment.The sensors must be
in air that is mixedwell (awayfrom a-c0il/heat
exchanger).See page 7.
69-2490--03