Honeywell PRESTIGE THX9421 User Manual download pdf (Page 7)

THX9321/9421 Prestige

®

IAQ and RF EIM

7

69-2490—03

Install optional sensors

1 Mountthesensoronavertical

exteriorwall,atleast6inchesbelow

anyoverhang.Choosealocation

protectedfromdirectsunlight.

2 Placesensorsecurelyinbracket,

facingawayfromwall.

6

M28491

M28849A

[If no sensors are used, skip to Section 7.]

To install outdoor air sensor

To install indoor air sensor

1 Removethewallplateandmountit4

to6feetabovetheflooronaninterior

wall.Drill3/16-inchholesfordrywall,

7/32-inchforplaster.

2 Attachsensorsecurelytowallplateas

shown.

To install discharge/return air sensor

1 InstallthesensorbetweentheIAQ

equipmentandtheheating/cooling

equipment.Thesensorsmustbeinair

thatismixedwell(awayfroma-coil/

heatexchanger).

2 Drill1/4-inchholeforthesensor

probeandmountittotheductwork

withenclosedscrews.

3 ConnectwirestoS1orS2terminalsat

theEIM.

M32995

M32936

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