7
6
MOUNTING THE CONTROLLER TO THE RETURN DUCTWORK
NOTE:
Mount the controller to the return ductwork at a location where the temperature
and humidity in the duct is most representative of the home . Keep the controller at least 6"
upstream from the point where the fresh air duct enters the return duct, and 6" upstream from
a humidifier outlet .
Sheet Metal Installation
1.
Remove the wall plate from the control and put the rest of the control in a safe location until
after wiring is completed .
2.
Mark the location of the wall plate sensor hole on the duct . Use a step-drill bit to create a 5/8"
( .625") hole for the sensor .
3.
Center the sensor hole in the wall plate over the hole in the duct, level the wall plate and mark
the locations of the two mounting slots . Drill a small pilot hole using a #36 ( .106") or smaller
drill bit at the two mounting locations .
4.
Use the supplied #8 standard hex head sheet metal screws to mount the wall plate to the duct .
FRESH
AIR DUCT
FRESH AIR DUCT
WALL PLATE
#8 HEX HEAD
SCREWS
5/8" DIA
HOLE
PILOT HOLES FOR SCREWS
6" MIN
90-2269
Duct Board Installation
1.
Take out the duct board mounting bracket, remove the wall plate from the control and put the
rest of the control in a safe location until after wiring is completed .
2.
Cut a 5 .75" x 5 .25" rectangular opening in the return plenum . Save the piece cut out to
insulate the duct board bracket around the controller . The display of the control will run
parallel with the long dimension . DO NOT MOUNT THE CONTROL IN A POSITION WHERE IT IS
FACING DOWN .
3.
Use the supplied #8 x 1/2" type 25 pan head screws to mount the control wall plate to the
duct board mounting bracket .
4.
Place the bracket in the cut out and seal in place using metal foil tape and/or mastic .
5.
Insulate the duct board bracket around the wall plate using the plug cut out of the duct board .
RETURN DUCT
FRESH AIR DUCT
6" MIN
5-1/4"
5-3/4"
DUCT BOARD
RETURN PLENUM
WALL PLATE
#8 PAN HEAD
TYPE 25 SCREW
DUCT
BOARD
BRACKET
USE CUT-OUT INSULATION
TO INSULATE DUCT BOARD
BRACKET AROUND CONTROLLER
MOUNT VENT CONTROLLER
SIDE AND TOP ONLY
90-2264
FRESH AIR DUCT
WALL PLATE
#8 HEX HEAD
SCREWS
5/8" DIA
HOLE
PILOT HOLES FOR SCREWS
6" MIN
