Sears 2500 Firmly seated Fig Media Wheel, Wire Support, Large PositionMedia Diameter, Cut Along

!

Electric Disconnect

[] B Install motor bracket on left side. Make sure bracket is

firmly seated (Fig. 6).

Media
Wheel	Small Diameter
k._
	Wire Support.
Large _	PositionMedia
Diameter	Wheel Shaft
Wire	Under Dimples
Support	By Flexing
	Outward.

[] C Remove mediawheel wire supportsfrom reservoir.In- sert largediameterwire supporton left sideof reservoirand small diameterwire supporton rightsideofreservoirPlace. mediawheel in wire supportswithgear on leftside of reservoir.(Flexwire sup- portoutwardto capturemedia wheel shaftunderdimples.)Fig. 7.

Unit is now converted to a left side motor.

installation (onsheet metal plenum duct)

NOTE: Figures 8 & 9 show humidifier installation on supply air plenum for illustration purposes only. If more convienient, humidifier may be mounted on return air plenum. If humidifier is installed on the return air plenum, the flexible hose (round collar opening) is connected to the supply air plenum.

FIBER PLENUM DUCTS

NOTE: The mounting screws supplied are for standard installa-

tion on _plenum ducts. If you have fiber plenum ducts, install the humidifier and components with thru-bolts, nuts, and washers (not supplied). If necessary, reinforce the humidifier mounting area on fiber ducts with sheet metal and provide addi- tional bracing as required to support the weight of the humidifier and water. (This fiber duct installation hardware is not supplied and must be pumhased from your local hardware store.)

[] 1Mark a levellineon plenum.Hold stiffeneragainst the ple- num with bottomedge on level line and flangestowardyou.Mark the locationof ell holes Includinglarge rectangularopening in center on plenum (Fig.8).

[] 2 Drill or puncha large hole in one corner of rectangle.

This willallowyou to insertthe tin snipsor metal saw.

CAUTION: BE SURE NOTTO DRILL OR CUT INTO AIR CONDITIONING COIL OR TUBING.

lltqm	Mounting
	Tabs

Drill(5)

118"Holes_			"
			<--	-	Stiffener
Cut Along			Cut Out
This Line				-	Level
			This Area
					Line
	Hole "A"--		,_ •		Supply
					Air
					Plenum
		I	Furnace
[]		Cut out the area inside the rectangle. If any of the edges
are rough, file them smooth.
[]	HI"A	Drill the remaining holes marked on the plenum with a
1/8" drill bit.

[] 5 Mount the stiffenerwith the flangestowardyou using the four corner mountingholes.Do not use Hole "A". Make sure stiffenerisflush withthe plenum.Seal aroundedge withcaulking if necessary(Fig. 8).

[] U Hang the humidifier case on the mounting tabs. The tabs may have to be bent out slightly to mount the case. Secure the case to the stiffener with a sheet metal screw in hole "A".

case is not attached with the screw, it could be dropped and I I NOTE: It is very important that the case is secured. If the

damaged during routine maintenance.

[] 7 Position collar at selected location. Mark center open-

ing and (5) holes. Cut out center opening and drill (5) 1/8" holes.

Hot Air

Plenum

ReturnAir Collar

Plenum Location

Furnace