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Description

Furnace humidifier

Manuals Content

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INTRODUCTION Dear Customer, Congratulations! You have just purchased one of the best furnace humidifiers available. This humidifier is intended for use only on forced circulation warm air furnaces. Please read the instructions before you install and use your humidifier. This will help you obtain its full value. Please keep this manual in a safe place for future reference.

CONTENTS Installation Before you start A. Check the contents 01 the carton B. Read the rules for safe installation and operation C. Check for required tools D. TYPical installatior: E. Humidifier mou nti ng location.. F. Converting right hand model into left hand unit G. Pre pari ng the hum id ifier for insta Ilation Mounting the humidifier cabinet By-pass air tube installation A. Installing the by-pass collar and air shutter B. Installing the by-pass air tube Water supply insta Ilati on A. Connecting the plastic tubing :0 the humidifier B. Installing the saddle valve to the water pipe C. Connecting the plastic tubing :0 the saddle valve D. Overflow drain connection Electrical installation A. Install ing the transformer B. Install ing the humidistat C. Low voltage wi ring diag ram Humidifier start-up A. Installing the drum and evaporator pad

1 1 1 1 1 1 2 2 3 3 3 3 3 3 4 4 ...4 1 J 5 6 6 7

~: ~~j ~~~:~~ ~~: b:-~;~;~r~' fi~~.:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::~ D. Humidistat dial setti ng 7 Final check-up before commencing operation 7 Miscellaneous information A. Understanding hum id ity B. Using copper tubing instead of plastic tubing C. Mounting the transformer to Interlock with the furnace blower

8 8 8

Routine maintenance Normal humidifier maintenance A. Cleaning and replacing the evaporator pad B. Cleaning the float valve assem bly C. Sum mer shut down

..9 9 9 9

Repair parts illustration

10

WARRANTY LASKO FURNACEHUMIDIFIER LIMITEDWARRANTY

.

To m.UtHiIIl1 w;!rr;lnc~. U\lOoniy ;:unutJ.tCuft-f'" Drandname n:pl.t(.t:ml:1lCt:\'arorawf pads and rt'pbn-mc:nc pares. If your furnal'c hurnuliti(:r has a .;cainlt:ss sct'el c;;abin!:.c.chf: Glb.m:r l'i ,cuar.lI1fl'lod h~' rill.: ~1..inura(cun:r lor l(» y<:ars. I:" \"IHlr furnJ.«: humidifIer has.1 Gal\'aluml".\1 (.lblflc=r. [he l.ablnec is guaranceed by che manufac.curer tor 1;1 YCJ.r\. Should dl'tUIl.d (Ir ~(:I.~.lI1ll'.d rt:p;ur bt'loml' nt:c:e\~ar\' dllnn.~ chI: "I/arranc~' penod. ,>end ~"(Jur Lomplc:u: proc.illl"C. poscage or fn:lghc pn:.ra1d co our taccory, Thl::i w;trrancy dOL'" nor .Ir'pl~' If [be -.iJmal::e 1J(:c.:lIrs bt:ClU\C Of .Kc.:ldt:l1C. Improper handling ur opef<.t[lOn. ..hIFPln~ dama~t". J.bust:. misuse, unauchofJzed repairs madt' or Juemp((.d. or r!ll' U"L'of' rhe pru...lUU for (.omm(:f(:ial sl'rnu'. Jnd/or mareri.ds, Sholl 1<..1 .lccess., All O(hl'r IMn'\ lIt' rhl'> I'ft.)dw,., Jor":;~u;,ranre~:J :,y rill' nUnUf.lL rllrt:r fflr .(JIIl' ''"t'J.r,from rhe: d.t((: of pUrd1Jst' J~:lIn\r ddC.:<:C\ II1.work~a.nship (lry parr') lx' m-L'llnl. or 11.1r'arr ~1ccJ"repl..111:rnl'nr.Loman rhl: manutalcun:r ror In-warranry rt'plac.:emcnr ?acrs, A lory . of rroor-o[-pufl'ha~c must be Includt:d alon~ wlrh rhe r~rL' ,lItd ~c\'k. whu,h I' !.)f..Hcd {In rhl' ',.III/':r of your ,lpphann' . Scnd ro LASKO ,\tETAL PRODL"CTS. S20 llnc.:oln Avt'"W'csr Cht:srt'r. PA 19"HO. DO .\IOT RE1TR;\; PRODI (T TO ,TORE WHERE PL'RUIASED

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C. CHECK FOR REQUIRED TOOLS

INSTALLATION

- tin

snips

- utility knife . adhesive tape

BEFORE YOU START... Take precaution when handling any fabricated metal, sharp edges can cause serious injury. The following preparation should be done before you start your new furnace humidifier installation.

- pliers

A. CHECKTHECONTENTSOFTHECARTON Please refer to the repair parts illustration on page 10 for parts identification. Inthe carton, you should find the followingitems: r- 1 - 6" flexible by-pass tube! item20 1

- adjustable wrench

- electric drill - drill bits (1/4",

1/8" and .104")

- medium sandpaper - screwdrivers

NOTE: On model 900L, metal collars are constructed on the flexible tube for quick locking connections.

On model 400L, two plastic ties are supplied for the flexible tube to connect to the collars! item211

1 - air shutten ,tem 191 1 - by-pass tube collar. item181 1 - motor & plastic cap assem bly. 'tem 29&6 1 1 humidifier cabinet assembly, 'teM U. 10& 261 1 - drum cage with evaporator pad, 'tem2&5 I 1 - humidistat assembly. Item81

- hammer

- ruler or measuring -level

tape

D. TYPICALINSTALLATION Here are three frequently encountered types of installation. 1. lO-BOY FURNACE (Fig.l)

2. HI-BOY FURNACE (Fig.2)

-

1 - 120V/24Vtransformen 'tem 71 1 - low

voltage

wire

20FT ion9 ,. item30 1

1 - 1/4" plastic water tubing, 10FT.'ong" item17I

W.A.

1 - water panl,tem3, 1 - installation instruction t 1 - plenum and humidistat opening template t 1 - by-pass collar opening template

t 1 - polybag contains the following hardware and

la-BOY FURNACE

accessories

R.A.

-

1 saddle valve assembly ( item 9) 1 nylon compression nut (item111

HI-BOY II

-

1 - overflow drain fitting ( item 25 I 1 rubber hole plug ( item27 I t 1 humidifier conditioner 1 conditioner's instruction t

-

FURNACE

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1 - black rubber ferrule

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FIG.1 3. HORIZONTAL FURNACE (Fig.3)

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1 - nylon ferrule!

item

FIG.2

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5 - electrical wire fastening staples t 11 sheet metal screws t 2 - brass insert

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HORIZONTAL

NOTE: 1. "t" - Parts are not shown on parts illustration. 2. If parts are damaged or missing, please call our parts dept. toll free

at 1-800-966-2028,

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Mon.

thru Fri. between

the hours of Bam and 4pm EST. please do not return product to place of purchase. Please quote model number of product when you call. 3. For questions on installation please call our tollfree hot line at 1-800-465-7300.

B.READTHERULESFORSAFEINSTALLATIONAND OPERATION 1.Always shut the power OFF before working on electric devices. 2. Shut OFF the water supply before working on the humidifier. 3. All wiring and accessories (wire size, insulation etc.) must satisfy national and local electrical codes. 4. Be cautious of sharp edges during installation.

FIG.3 R.A.: Return (cold) air plenum W.A.: Warm air plenum

_ : Humidistat II : Humidifier

IMPORTANT: Humidistat must be upsteam of the furnace humidifier and a minimum of 6 inches distance must be maintained for humidity sensing and control.

E. DECIDE THE HUMIDIRER MOUNTING LOCATION NOTE: 1. The humidifier should be mounted on the return air plenum with the by-pass tube connected to the warm air plenum. This is a safeguard only, it can be mounted on either side, but you must make sure that the evaporator pad

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does not sight radiant heat from the combustion chamber of the furnace. Radiant heat will cause the evaporator pad to deteriorate. Available space and ease of installation will determine which location to use. This humidifier can be mounted on a minimum of 8" wide plenum or duct. 2. The center of the by-pass tube collar opening must be approximately 13 inches from the humidifier cabinet side panel (Fig.4). However, if the disApprox. 13 inches

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side. Using the nylon bearing as a pushing point. slide the bracket towards the front of the cabinet until the bracket disengages from the rear tab. Pull the bracket forward until the front of it is free of the front tab. (Fig.5) 3. Position the bearing bracket over to the left side with the open portion of the "U" shaped nylon bearing in the up position and insert the rear end of the bracket into the rear tab to its limit. Next slide the front end of the bracket into the front tab until the small circular boss snaps into the nest hole. This locks and registers the correct position of the nylon bearing. 4. Relocate the float valve assembly over to the right side of the cabinet. Be sure to register the double "D" plastic raised portion into the hole then secureit with the nylon hex nut. (Fig.6)

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tance has to be more than 13 inches for your installation, an additional length of galvanized pipe (not included)may be used to extend the by-pass tube length. 3. 00 not mount the air by-pass tube and the plastic cap assembly to the cabinet, until you know if it is going to be a left or right side installation. 4. In order to prevent furnace or property damage, the humidifier must be installed according to the manufacturer's installation instructions. Ifdamage occurs due to improper installation, the manufacturer's warranty is null and void. F. CONVER11NGRIGHTHAND MODELINTO~ HAND UNIT As shipped, the humidifier is a right hand model (By-pass tube connected to the right side of the humidifier). Ifthe humidifier mounting location dictates that the by-pass air tube must be on the left side of the humidifier, then proceed with the following: 1. Remove the float valve assembly from the cabinet. 2. The bearing support bracket must be relocated to the left Nylon bearing

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Relocating the float valve assembly from the left side of the cabinet to the right side

FIG.6 5. From the parts bag, take out the double "0" rubber hole plug and insert it into the left side double "0" hole to prevent air leakage. The humidifiE?ris now ready for a left hand installation (By-pass tube connect to the left side of the humidifier). G. PREPARINGTHE HUMIDIRER FOR INSTALLAll0N 1. Mount the motor & plastic cap assembly onto the humidifier cabinet. Note: Be certain that this sub-assembly is mounted to the proper side of the cabinet for your specific installation. 2. Mount the overflow drain fitting onto the bottom of the humidifier cover by inserting the tail of the fitting into the double "0" shaped hole in the cover bottom. Using a coin or a screwdriver, turn the fitting one quarter turn (90°) in either direction to bind it onto the cover. (Fig.7)

Bearing support bracket

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Humidifier cover bottom

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MOUNTING THE HUMIDIFIER CABINET Foryour convenienceand simplicityof installation.a combination plenum opening template, which includesthe locationof the humidistat control, is supplied. To install the humidifier cabinet

CAUTION: If you have central air-conditioning take precautions not to damage the evaporator coil while drilling and cutting. The evaporator coil is generally installed just above the furnace in the warm air plenum. 1. Use adhesive

tape (not supplied) to affix the template on the

plenum. 2. Drill the marked holes on the template. 3. Drill a 3/8" hole inside the marked rectangle. Use this hole as a starting point for cutting opening. 4. Mount the humidifier cabinet on the plenum with (8) sheet metal screws supplied. NOTE: 1.The humidifier should be level from side to side and from front to back.

For Model 400L: 1. Slide the by-pass tube over the flanged collars of the humidifier and the by-pass tube collar. 2. Usethe two plastic ties provided to tighten the bypass tube onto the collars. Note: The mounted by-pass tube should be straight _ not sagging.

WATER SUPPLY INSTALLATION IMPORTANT: Connect the tubing to the humidifier FIRSTbeforeconnecting to the saddlevalve. A. CONNECTING THE PLASTIC WATER TUBING TO THE HUMIDIFIER 1. Sand the plastic water tubing end (Approx.1-1/4") with medium sandpaper (not provided) in a rotating motion.This assures a Approx. ,., ,i"

2.Existing air conditioning coil or electronic air cleaner may dictate the template location.

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BY-PASS AIR TUBE INSTAllATION A. INSTAWNG THE BY-PASS COU.ARAND AIR SHUTTER 1. Attach the by-pass tube opening template to the other plenum. The center of the by-pass tube opening must be approximately 13 inches from the humidifier cabinet side panel. Note: Leveling of the by-pass tube is not necessary but preferred. 2. Drill 3 holes and cut the circular opening according to the template. 3. Mount the by-pass tube collar and the air shutter to the plenum with 3 sheet metal screws supplied. Note: Air shutter should be mounted in the open

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FIG.9

non-slipping, trouble free connection. (Fig.9) 2. Slide the nylon compression nut and the black rubber ferrule onto the sanded plastic tubing and then fit the brass insert into the end of the plastic tub-

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FIG.S'

3. Push the plastic tubing firmly into the humidifier float position.

(Fig.S)

B.INSTALLING THE BY-PASS AIR TUBE For Model 900L: 1. Line up the 4 lugs on the collars with the 4 matching slots on the by-pass tube ends. 2. Slide and clip the by-pass tube ends onto the flanged

collars.

valve threaded water inlet. Carefully begin tightening the threads by hand. Use an adjustable wrench to finish tightening the nylon compression nut onto the float valve. Do not over-tighten. Note: The optimum tightness of the nylon compression nut will leave a gap of approximately 3116" between the nylon compression nut and the nylon hex nut. (Fig.11) ~"'"'"'""""oII1'1":"



3

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onto the sanded plastic tube and fit the brass insert in the end of the tubing. (Fig.12) 4. Push the tubing firmlyinto the saddle valvethreaded water outlet. carefully begin tightening comperession nut by hand (Be careful not to cross the threads). Use an adjustable wrench to finish tightening the brass compression nut. Do not over-tighten. D. OVERFLOW DRAIN CONNECTION We strongly recommend you install a drain pipe to protect your property in case of water leakage. This overflow fitting should be connected to a drain by pushing an inside diameter of 1/2"hose over it or an ouside diameter of 1/4"plastic tubing into it (Fig.13!. Make sure the hose has the proper slope for drainage when you finish the installation.

FIG.11

B. INSTAlliNG THE SADDLE VALVE TO THE WATER PIPE The water supply for the humidifier is provided from an existing cold water pipe by using a self-piercing saddle valve. In order for you to use the supplied plastic tubing, select the nearest cold water pipe suitable for saddle valve installation. 1. Turn the main water supply off. 2. Rotate the valve handle so that the piercing pin does not protrude down beyond the top clamp. 3. With the rubber gasket in the fixed position, clamp the saddle valve on the selected location of the cold water pipe and mount the bolts and nuts to the saddle clamps. Note:Make sure that the bolts and nuts are not in the way of handle operation. 4. To pierce the copper pipe, simply turn valve handle clockwise until you feel that it is firmly seated. (Fig.12) Note: Do not open the valve now. Proceed with the mounting of the plastic tubing to the saddle valve first.

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C. CONNECTING THE PLASTIC TUBING TO THE SADDLE VALVE 1. Cut the plastic tubing with a sharp knife to the proper length to fit between the humidifier and the saddle valve. 2. Sand the plastic water tubing end (Approx.1-1/4" ) with medium sandpaper in a rotating motion. (Fig.9) 3. Slide the brass compression nut and nylon ferrule

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1/2' hose or 1/4" plastic tubing

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Note: The drain hose is not supplied with the unit, you may purchase the hose from a local plumbing supply store.

ELECTRICALINSTALLATION A. INSTAlliNG THE TRANSFORMER . CAUTION:

Rubber gasket

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Turn the electric power OFF at the main electric panel before you work on the transformer installation. The step down transformer (120V to 24V) can be mounted on any conveniently located electrical outlet box which has a CONSTANT 120V power supply. (i.e.,power can not be switched OFF by any other switch such as lighting, fans etc.) 1. Select a conveniently located electric outlet box. 2. Open the outlet box cover and remove one of the knock-outs on the outlet box by using a screwdriver or pliers. 3. Remove the locknut of the transformer and then insert the wire leads and threaded portion of the transformer into the knockout of the electrical outlet box. (Fig.14) 4. Install the locknut to lock the transformer onto the electrical outlet box. 5. Connect the transformer lead wires to the power source. (One lead connects to the black wire and another lead connects to the white wire.) 6. Replace the cover of the electrical outlet box.

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Note: Some transformer models are grounded by the transformer body & transformer lock nut & electrical box outlet. other transformer models have a green wire.

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900 wire termonals for low

Wire nut Inot supplied)

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B. INSTAWNG THE HUMIDISTAT Caution: Turn the electric power OFF at the main electric panel before beginning humidistat installation. This humidifier is equipped with an exclusive universal humidistat which can be either wall mounted as furnished or, with a few minor changes, be mounted on the return (cold) air plenum or duct. Either wall mounting or plenum (duct) mounting works equally well for humidity sensing and control. Wall mounting provides easy access to adjust the humidistat setting since it is located in the living area. Plenum (duct) mounting provides a simple installation (y'ou'do not have to fish the low voltage wire through the wall. In some cases, it may be difficult to fish the wire thru the wall). Select either wall mounting or duct mounting for your humidistat. If you decide to mount your humidistat in the living area (wall mounting), then proceed with the following: Wall mounting: 1. Your humidistat is furnished in the "wall mounting" mode, no changes to the humidistat are necessary. because the circuit is low voltage (24V), no switch box is required. 2. Select a location about five'(5) feet above the floor on an inside wall where "normal" air circulation f!xists. (In most residential installations, the humidistat is installed near the heating thermostat for easy adjustment and wiring). 3. Drill a small hole in the wall and then fish the low voltage wire out thru the hole. Leave approximately 6 inches of the low voltage wire leads outside the hole for humidistat connection. 4. Remove the cover plate from the humidistat and you will see four holes at the corners of the base plate.

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Mount the humidistat on the wall using the four (4) 1" long screws provided. Make sure it is level and the low voltage wire is coming out thru the 3/8" hole on the base plate. (Fig.15) 5. Strip the low voltage wires and make connections to the humidistat using the two 90° wire terminals provided. Replace the cover plate. 6. Remove the paper backing from the control label and apply the label onto the face of the plate. 7. Install the knob onto the humidistat control shaft. Plenum (duct) mounting: 1. As shipped. the humidistat is ready for wall mounting. You must first convert the humidistat from wall mounting to plenum (duct) mounting. The control mechanism must be in the air stream in order to sense and control the humidity. To convert to plenum (duct) mount: (a) Remove the cover plate and discard it. (b) Remove the control mechanism from the base plate by removing the two holding screws at the

Control mechanism holding screws Note: 1, Discard the cover plate, 2, Control mechanism must be in the air stream to sense and control the humid.ty, FIG.16 ~Ir.,'.



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back, and then, turning the control mechanism 180< upside down to allow the shaft to protrude out through the 1/2" hole on the base plate (Note: base plate remains in the same position and only the control mechanism is turned). (Fig.16) (c) Replace the two screws to hold the control mechanism to the base plate. 2. Use adhesive tape (not provided) to affix the humidistat opening template to the pre-selected location and then drill four holes and cut the plenum as outlined on the template. 3. Connect the low voltage wire to the humidistat by using the two (2) 90< wire terminals provided. 4. Mount the humidistat onto the return (cold) air plenum by using the four (4) 1" long sheet metal screws provided. (Note: a small rectangular notch at the bottom of the base plate is provided for the access of the low voltage wire to the humidistat wiring terminals.) 5. Remove the paper backing from the control label and apply the label onto the face of the base plate. 6. Install the knob onto the humidistat control shaft. IMPORTANT: The humidistat must be upstream of the humidifier and a minimum distance of 6 inches must be maintained. (Refer toTypicallnstaliation, Fig.l,2 & 3.)

3. Cut one of the conductors and strip the insulation from both ends (Fig.18) 4. Connect the newly stripped ends to the transformer low voltage LOADterminals. (Fig.19)

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5. Run the low voltage wire to the humidistat. Separate the ends of the conductors, strip them and connect to the humidistat terminals. (Fig.20)

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HUMIDIFIER START UP Caution:

1. Make sure that all the components are securely installed before you start up your humidifier.

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C. LOW VOLTAGE WIRING DIAGRAM This humidifier uses a 24 Volt drum motor to turn the evaporator pad in the cabinet. The motor is controlled (ON or OFF) by the humidistat. The power source for turning the motor is the 24 volt side of the transformer. Once you have mounted the transformer and the humidistat in place, the low voltage wire connection is accomplished as follows: 1. The humidifier motor lead wire has two(2) push-on female connectors and the 20 foot low voltage wire has two(2) push-on male connectors. Connect the , female to the male connectors first and then run the low voltage wire to the transformer. 2. At the transformer, carefully cut the insulation between the two conductors and separate them approx. 3". (Fig.17)

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Nylon bearing

Note: Insert the ear lug into the motor coupling first and then push the other end of the shaft to seat inside the nylon bearing.

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2. Remember to replace the water pan before you open the water supply. A small arrow on the water pan shows how it should be inserted. A.INSTALLING THE DRUM AND EVAPORATOR PAD A steel shaft in the center of the drum & evaporator pad assembly is used to connect to the motor coupling and the nylon bearing (Fig.21). The ear lug that is closer to the shaft end is the end to be inserted into the motor coupling. Connect to motor coupling first and then push the other end of the shaft down to seat inside the nylon bearing. Caution: Do not rotate the drum by hand once it is seated inside the motor coupling. This may damage the gears in the motor. B. ADJUSTING THE WATER LEVEL Turn on the water supply at both the main water supply and the self-piercing saddle valve. Check to see if water leaks at any joints. If there is a leakage, tighten the com pression nut to correct the problem. Water should flow gently into the water pan. If it flows too slow or too fast, adjust the self-piercing saddle valve. The water level is adjusted by altering the height of the float. This is done by rotating the knob of the valve seat. Adjusting the float in such a way that it closes the automatic valve when the selected water level has been reached. The maximum water level in the pan should not exceed 1/2" from the top of the water pan. (Fig.22)

Loosen one screw and men slide the shutter to open or close

~ FIG.23

D. HUMIDISTAT DIAL SETTING humidity environment Although a relative

of 45-50% may be desirable, setting your humidistat at this point when the outside temperature is below 30:F can cause condensation on windows and walls. Continued condensation for extended periods of time may result in structural damage. Use the following chart. or the one on the humidistat as a guide for maximum dial settings for various outdoor temperatures. If condensation forms at these suggested settings, reduce the humidistat setting by

successive

50/0

increments.After eachreduction in setting

allow 6 hours for equilibrium to be reached before further re-adjustment. If condensation persists with progressively lower settings made during a 3 day period. turn off water supply at saddle valve. turn humidistat to "OFF" and consult your heating dealer. When your house is unoccupied for longer than 3 days during the winter always set the humidistat down to 15% so that severe weather during your absence will not result in condensation which might cause damage in your home. AT OUTSIDE TEMPERATURE

'F

STATAT SET YOUR HUMIDI'I

0

-20 0

15%

I

.10

I

20"1<

0

.20

+10

I

30%

I

25%

ABOVE -32

35%

40'O

FINAL CHECK-UP BEFORE COMMENCING OPERATION FIG.22

1. Carefully check that both ends of the water tubing are firmly held in place in the compression fittings. Pull slightly on Cover

C. ADJUSTING THE BY-PASS. AIR FLOW Sometimes there can be a static pressure differential that may causean excessof air to by-passfrom one

plenum to the other through the humidifier ,causing less airflow through the distant heat outlets in the house. It may also blow water off the evaporator pad. In either case the shuttershould be gradually closed until the condition is corrected.To close the shutter, simply loosen one screw and slide the shutter under the collar flange and replace the screw. (Fig.23)

Match the slots

i~ __L . r-'1

~

l

1\

~ '.~

~

\'

\.

V

~ 'I

FIG.24 A'.A'P.'~



'- 'Click.

K.-,

7

~-.cr;'''~

both ends of tubing. The tubing should not move at all. 2. Check to see that the water level in the water pan is at the right level and the float closes the valve completely. 3. Make sure that there is no water leakage before leaving the installation unattended. 4. Put the cover back on the humidifier. (Fig.24) Note: The humidifier drum will turn very slowly.( 1 revolution per minute)

MISCELLANEOUS INFORMA TION A. UNDERSTANDING HUMIDITY 1. Measuring the humidity level is possible with a device called a hygrometer. However. only a precision hygrometer can give you an accurate reading. 2. The humidity level goes down if the air in the house is frequently replenished. There can be many causes of air leaks such as fireplace damper left open, operation of kitchen or bathroom fan or a constantly running heat recovery ventilator etc. 3. Humidifying all of the air in a house may take some time, depending on the original dryness level in the house. Some parts of the house such as carpet or furniture will absorb the humidity before a measurable result is reached. 4. An approximate measure of humidity level. during the winter can be done by examining your windows. If your windows are misted or fogged up and there is nothing obvious causing it (for example: bath, shower, cooking ), then there is too much humidity in the house. No mist at all could indicate a lack of humidity. A slight mist around or in the corners of the windows indicates that the humidity level is about right for your comfort. (Note: Mist may never form on thermopane windows or when storm windows are used. This is because the inside pane is "insulated". In this case look at the corners or the edges.)

B. USING COPPER TUBING INSTEAD OF PLASTIC TUBING You may wish to use copper tubing instead of plastic tubing for the water line connection. To do so, you will have to replace the nylon ferrule with a brass ferrule in the saddle valve. Furthermore, it is not necessary to fit the brass insert into the ends of the copper tubing for the humidifier and saddle valve connections and do not sand the ends of the copper tubing. (Fig.25! Brass ferrule

r

To saddle valve

(suppliedl

Brass compression nut

~

I

L

t

,I

Nylon com. pressIon

nut

~o

1/4" Copper

tubing

FIG.25 8



humidifier

lBlack

rubber

ferrule

C. CONNECTING THE TRANSFORMER TO INTERLOCK WITHTHE FURNACE BLOWER You may wish to interlock the operation of the humidifier motor to the furnace blower. The wiring diagram shown on Fig.26 is applicable only if your furnace is equipped with a single speed motor. DO NOT connect to a furnace with a two or three speed blower motor, otherwise, the transformer will short out in a very short period of time. Caution: The transformer may only be wired to a blower motor operating at 120V. The transformer will short out if wired to a 220V circuit. If you are not familar with the furnace wiring diagram. DO NOT use this method. Furnace power supply

120V ~ Line~

Neutral

,~

Fan control

,

I= t

I~JJ l

/

~/

'.

.

Transformer

~/ ~jl

24 Volt side

1\

'>?'../~

-

'\

-

Furnace control

Fu.rnaceblowermotor ' box I (Songle speed , 120\ on yl

FIG.26

casing

ROUTINE MAINTENANCE NORMAL HUMIDIFIER MAINTENANCE Caution:

1. Turn off the water supply and eleCtiic:J1 power before you do any maintenance wcrk. 2. Do not try to stop or rotate the drum by hand. This may cause permanent damJge to the drum motor. The evaporator pad should be replaced at least once per heating season. The water pan and the float valve should be thoroughly cleaned at least once a year. Depending on the mineral concentration in your water, a more frequent cleaning may be necessary. Special water treatment conditioners aie available at your store. They prevent the mineral contents in the water from depositing on the humidifier parts. This will make the cleaning process much easier. We highly recommend the use of such product. A. CLEANING OR REPlACING THE EVAPORATOR PAD Use on Iv manufacturer brandname reDia cement evaporator Dads or vou will void your warrantv. This new drum design features an instant release and locking action for replacing and servicing of the evaporator pad. To remove the evaporator pad from the drum, proceed as follows: 1. Hold the drum assembly in a horizontal position and pull the bushing out with your fingers. (Fig.27)

---------------

~. Pull out

..

Stop IU~

DrumShaftJ

4

----------...

-

--

'

'-

Bushing

Diskflange) FIG.27

2. Slide the evaporator pad off the drum cage. To replace the pad: a. Keep the bushing in the extended position and slide the evaporator pad over the spokes until it is against the disc flange. b. Push the bushing back along the shaft to the stop lugs.The evaporator pad is now locked into position.

B. CLEANING THE FLOAT VALVE ASSEMBLY AND WATER PAN The float valve assembly and the water pan can be cleaned by using a solution of 50/50 water and vinegar. To remove the float from the valve jet shield, proceed as follows: 1. Turn off the water supply.



i')InII: ~""""'~'A.

2. Place your thumb and forefinger around the neck of the float as shown in Fig.28 3. Squeeze firmly. This will disengage the two pivot pins from the holes at the sides of the valve jet shield and release the float. 4. The valve seat and the knob can then be pulled off the spigot. 5. When replacing the seat be sure that it is pushed down as far as it will go onto the float.

~

'.... /

.

t

"

Knob

Valve seat Seigot

..!

~

~

. Valve jet-' shield Pivot pin-/

/

Squeeze

"

here {neck)

_

/ /

,
'1
/

'.

/._

Fioat

FIG.28 C. SUMMER SHUT DOWN Normally during summer season, the humidity level in the air is quite high. Therefore it is advisable to shut off the humidifier system. To prepare for the summer shut down, proceed with the following: 1. Close the water supply at saddle valve. 2. Turn the humidistat knob to the "OFF" poisition. 3. Empty and clean the water pan. Note: The water pan ean be taken out without removing the float valve or even if water is inside the water pan. Simply move the water pan forward and take it out from the bottom of the humidifier. 4. Close the air shutter.

,.~

REPAIR PARTS ILLUSTRA TION Note: Use only manufacturer brandname evaporator pads and replacement parts or your warranty is void.

, Go

~1

ITEM 1

PART NO. 01A900939

DESCRIPTION

.

ITEM.

PART NO.

CABINET

16

*

DESCRIPTION NYLON FERRULE

2

01A900914

DRUM CAGE

17

01A930040

1/4"PlASTICWATERTUBING(10FT.LONG!

3

01A060214

WATER PAN

18

01A 172107

BY-PASS TUBE COLLAR

4

01A900163

COVER

19

01A170929

AIR SHUTTER

5

01AOl7256

EVAPORATOR PAD 90'S-L

20

01A 118810

6" FLEXIBLE BY-PASS TUBE

6

01A 172134

DRUM MOTOR 111788

t 21

010798000

PLASTIC TIE

01A 170925

BEARING SUPPORT BRACKET

7

01AOO0201

TRANSFORMER

22

8

01AOO0806

H\,IMIDISTAT

23

01A131810

NYLON BEARING

9

OPB132055

SADDLE VALVE

24

01A900911

DRUM SHAFT

10

02A900905

FLOAT VALVE ASSEMBLY

25

01A006911

OVERFLOW DRAIN FITTING

11

060010801

NYLON COMPRESSION NUT

26

01A 131725

WINDOW

12

01A010816

RUBBERFERRULE

27

01A 131720

RUBBER HOLE PLUG

13

01A930041

BRASS INSERT

28

20221

FOAM SEAL

14

060011142

.

15 NOTES:

NYLON HEX NUT

29

01A900902

PLASTIC MOTOR MOUNTING CAP

BRASS COMPRESSION NUT

30

01A008116

LOW VOLTAGE WIRE (20 FT. LONG)

1. THIS IS A PARTS LIST, NOT A PACKING UST. IT IS FOR THE PURPOSE FOR ORDERING THE REPAIR PARTS. 2. * PART NO. NOT AVAILABLE, USE THE "DESCRIPTION" TO ORDER. 3. t SOME MODELS HAVE A METAL CONNECTION COLLAR. HENCE THE PLASTIC TIES ARE NOT SUPPLIED.

10

-y.~ PART NO. 060900018 Issueo: Mav,2'" 1994


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