Sears 303.147012 manual Operation

WIRINGTOCONSTANT120VACUNE

EXTERNALTOFURNACE

				Junction _
		_U	J	Inllal SiI# _ddl	In Rltum	Air Plenum
			Ill I	(_ _-._lly	_ o=_s)
			IIII	Pu_ thisacce_lotyseparatelyifneeded.
			IIII	Av=_ _o_ s_-s P,_,_		Ser_=
[] 6	Usinglowvoltagewire supplied,connectspadeter-	I				I
minalsto solenoidvalve on top of humidifier.		J NOTE: Wiring mustconformto localcodes.

[] 7 Position and support wire to humidistat location.

Separate wire. Cut only one wire, strip ends.

[] 8 Feed wires thru opening in humidistatback plate and attachto screwterminals.Mounthumidistaton retumair ple- num using (4) #8 screwsprovided.Install shaftextension,cover and knob (Fig. 16).

CONTROL CIRCUIT: Forproper operationand water conserve- fion, this humidifiermustbe wiredso it willoperateonlywhen the furnace blower is runningand the humidistatcalls for additional humidityTwo. methodsare shown(Fig. 17 and Fig. 18):

[] 12 Attach"OperatingInstructionLaber to returnair ple-

num nexttothe humidistat.Peel offpaper backingand sticklabel in desired location.

operation

[] 1 Set knobto the lowest temperaturepredictedfor a

24hourpe_nd. Because ofdifferencesin houseconstruction you may wanttotrya higheror lowersettingtoachieveproperhumidity.

[] 2 Change knob settings as outdoor temperature

Fig 17: WIRING INTO FURNACE - FOR ANY FORCED AIR FURNACE WITH SINGLE SPEED 120 VAC BLOWER ONLY.

CAUTION: Do not use this methodwith multi-speedblow- em or blowem otherthan 120 VAC.

changesoccur.

[WARNING: DO NOT LEAVE KNOB SET IN "TEST" POSI- I

TION ABOVE %20" OR HUMIDIFIER WILL RUN CON- STANTLY.

Rg 18: WIRING EXTERNAL TO FURNACE- FOR ANY FORCED AIR FURNACE INCLUDING FURNACE WITH OTHER THAN 120

VAC BLOWER MOTOR OR FURNACE WITH MULTI-SPEED BLOWER MOTOR.

NOTE: Some furnacesare equippedwith accessorytermi-
nalsthat can be usedfor the humidifier.In this case, consult	i
the fumane manufacturer'srecommendationfor wiring.

[] 9 Tum offelectricityat fusebox. Using(two)wire nuts and conduit nut supplied, install24 VAC transformerto 120 VAC supplyjunction box followingthe control circuitselected so the transformer will be powered onlywhen the fumaceblower is run- ning. Do not use existingtransformer on fumace.

[] 10 Connect spade terminals of low voltage wire to spade terminals of transformer.

[] 11 Tumonalectridtyandtastoparationbyobasrvinglf water is flowingto drain while fumace is running and humidistat dial Is set to "toet"position.

IF SWEATING OF WINDOWS OR WALLS OCCURS OR IF AIR IS TOO DRY:

Check dial seffing. Indicatorshould point to the lowest24 hour temperature. If settingdoes not agree, readjust knobto proper

correctand conditions have not changed, rotate knob beck and forthfromTEST to MINIMUM HUMIDITY SETTING. If humidifier

numberand wait 24 hoursfor sweatingto stop. Ifdial settingwas goes ON and OFF, control is operatingproperly.

AIR CONDmONING - IMPORTANT:

If your furnace has air conditioning (cooling),dose the damper completely duringsummer months and tum the humidistatto the

MinimumHumiditysetting.BE SURE TO OPEN DAMPER DUR-

ING HEATING SEASON AND RESETTHE HUMIDISTAT.

WATER FLOW RATE:

At standardwater line preseureof 50-60 PSI (poundsper square inch), water willflow through humidifierat approximatelyfour (4) gallonsper hour.About 0.7 gallonspar hour of the four will be evaporated,leaving3.3 gallons to be drainedaway.Since the fur-

nsoe only runsan estimated30-40% of the beating season, and the_umldifter is wired to operate only with the fumase blower,

and only when humidityIs required,the actual amount of water drainedper day is much less than wouldbe expected.

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