Owner`s Manual
Contents
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7. near the unit e In case of well water or other water containing particles we also recommend installing a little strainer in the water line to protect the solenoid valve e Model CFS 05B comes with the water supply line factory installed The water hammer absorber mentioned below is not included Route water supply line as required 16 1 The water intake fitting on the top of the humidifier must be wrapped with teflon tape Screw the water hammer absorber piece of red rubber hose with two brass fittings onto the water intake on the top of the humidifier without stripping Please see Fig 16a Also use the same double wrench method for tightening Water Hammer Absorber Water Intake Fig 16a 16 2 At the other end of the water hammer absorber connect the water supply tube using the same type of fitting used on the water supply valve Tighten the compression nut without stripping with two wrenches one to hold the water hammer end and one to turn the compression nut Please see Fig 16b NOTE The brass sleeve supplied is to be used only if the plastic supply tube is replaced by a copper tube Either system works with this humidifier but only plastic tubing is supplied Fig 16b Keep the supply valve closed for now you will open it during the start up procedure Page 20 17 Installing the Air Pressure Probe 17 1 The pressure probe also called Pitot tube connected to the pressure differential switch inside the
8. of 24 in front of the unit 15 1 Remove the cover by turning the two 1 4 turn screws to the left and pull the cover towards you 15 2 Remove the white wire connected on the water pan at the bottom of the unit This is the overflow sensor 15 3 Remove the water pan by lifting the front off its holding screw and pull towards you Do not remove those screws from the humidifier middle wall 15 4 The humidifier must be installed on a vertical surface Because of the length of the steam hose supplied select the location of the unit as close as possible within a maximum of 2 feet of the steam delivery tube diffuser Please see Fig 15 a for necessary clearances around the humidifier COMFORTS CAM_ HUMIDIFICATION SYSTEM 12 Fig 15 REMINDER e Never install the humidifier directly on the furnace body as this could void your furnace warranty Page 18 15 5 Ifa rigid drain pipe has to be installed under the unit and connected to the main house drain We recommend a 1 minimum I D tube or standard 1 1 2 I D ABS plumbing tube to do the installation Please also install a siphon P trap with a drain cap The two flexible tubes coming from the humidifier and which will be inserted in the rigid pipe require a minimum free vertical length of 18 lt is very important to leave an air gap between the rigid pipe and the tubes to allow the siphon to function properly The flexible tubes cannot touch the water contained in the sip
9. r 4 c a C l aae o i H CJ 1 On Standby LED l C Jo FE Lp onistandby Element HO D e Relay 1 witc oF or L J Fan LED Neutral 9 a cl Alarm LED connection O OIG steam LED L Fill LED Transformer c Drain LED Element Relay sP The built in air flow switch is factory Connect the fan control dry contact so that 1 will start the fan ured na ls when there is demand from the humidistat The dry contact is rated at 3 amps 240 VAC x O O lt x Z O O Connect the humidistat supplied with the The al FP E t humidifier to the control board according to e alarm function is not available on residential models the wiring diagram supplied Fig 13b Description of Wire Harness Grounds the electronic board to Bracket of the high limit Green the tank for the level sensors cut out Blue Blue Powers the electric valve with Electric Valve Pair 24 VDC Overheat signal High Limit Cut Out White Reads the low water level Low Level Sensor Yellow Reads the high water level High Level Sensor Fig 13c Page 15 CONTRACTOR Note Please read sections 14 and 15 before proceeding 14 Installing the Steam Hose and the Steam Diffuser 14 1 Proper installation of the steam delivery tube diffuser and steam hose is critical for the trouble free operation of the humi
10. the main panel or depressing the power button until the green light is fully on will reset the error code Mode On Standby Green Fan White Warning Red Steam White Fill Blue Drain Yellow Fig 5a 5 2 The COMFORTSTEAM humidistat also has two pilot lights to indicate the current status The green light is lit when the humidistat is demanding for humidity thus activating the boiling cycle The red light indicates a warning and reproduces the same warning code as the red light on the humidifier control panel If ever the red light is lit or flashing on the humidistat you know immediately that the humidifier needs attention Display Status Description On Standby Green light OFF The humidifier has no power Breaker is OFF 0 Blinking The humidifier has power but is in standby mode ON The humidifier has power and is functional Ce White button Press to put the humidifier in stand by mode The green light is blinking Press and keep depressed 3 seconds to power or reset the humidifier The green light is ON Page 4 Fan 2 light Warning N Red light Steam M White light Filling cycle Blue light Draining cycle Yellow light ve White button z ON ON ON ON ON The fan control is activated An abnormal condition occurred Please refer to the error code table in Section 7 The humidifier is heating water to produce steam The electric water valve i
11. 13 Put the overflow pan under the tank by sitting it back on its holding screws Reconnect the white wire of the overflow sensor on the water pan Put the overflow and main drain tubes back into the rigid drain pipe attached to the wall Put the cover back on the humidifier and lock it with the two quarter turn screws When finished turn the main power back ON and readjust the humidistat to it s previous setpoint Page 9 9 Preventative Maintenance 9 1 Preventive maintenance to be performed every two years In order to avoid problems due to accumulation of deposits we suggest that you replace the centre metal tube the silicone drain tube and the low level sensor We also suggest you replace the round o ring gasket around the tank All these components are available in a tune up kit 9 2 To prepare for the Summer Season e Shut the main power OFF e Shut the water supply valve e Perform a complete maintenance as described in section 8 e Dry the inside of the tank Page 10 10 Warranty 10 1 Herrmidifier warrants against defects in material and workmanship the steam humidifier and all its components for two 2 years after date of shipment from its factory 10 2 Any claim under this warranty shall be considered only if the product has been installed and operated in accordance with these written instructions 10 3 Any misuse of the system or any repair by persons other than those authorized by Herrmidifier carried out wi
12. 30 14 F 10 C 35 above 23 F 5 C 40 Fig 4a Fig 4b 4 4 No matter which humidistat system you are using please be aware that the humidity level cannot adjust quickly It may take some time to build up the humidity to your comfort level Depending on the dryness of the house carpets furniture drapes and wood will absorb moisture before you can feel the change 4 5 If the house remains unoccupied during the winter season set the humidistat to the minimum set point In order to prevent condensation Page 3 5 Functions of the Electronic Circuit 5 1 The electronic board located inside the unit controls all the humidifier functions The front panel is equipped with pilot lights indicating the status of the humidifier Please see Fig 5a Please refer to Article 5 2 for the description of the functions The red pilot light which is a warning light can either glow all the time or flash when activated In case of error the humidifier enters stand by mode The flashing of the pilot lights indicates which error happened The error recognition sequence is as follows e The green pilot light near the power button blinks once e The red light flashes a certain number of times this is the error code e A pause with no light at all e Another blink of the green light once e Another series of flashing of the red light e And so on until the condition is reset or service is performed e Shutting the power OFF at the breaker in
13. User and Maintenance Manual for the Homeowner and Installation Instructions for the Contractor STEAM LAL M LD GA LA Nc BS LEM COMFORTSTEAM_ HUMIDIFICATION SYSTEM lao l HERRMIDIFIER T Please read this manual carefully before beginning installation Important Notice to the Contractor Once the installation is complete please leave this manual with the customer for future reference 1 Warnings and Disclaimer Installation Precautions Please read and understand the warnings and instructions fully before you begin this installation and keep them for future reference The manutfacturer will assume no responsibility and the warranty will be void if the installer or the user does not 1 1 1 2 adhere to the following precautions 1 x O O lt x Z O O This humidifier will be connected to and used under water pressure and it must be installed in such a way that if a leak occurs the water could not cause any damage to the property Make sure all water connections are properly installed or a water leak could occur This humidifier is intended for use on forced warm air circulation furnaces as well as multi fuel furnaces which have at least one supply duct connected to the furnace and where a positive air pressure can be measured Do not install a humidifier where the surrounding temperature may be 32 F 0 C or colder Freezing water will damage the humidifier and may burst the supply lin
14. ank at different intervals Every 30 cycles equals approximately 5 hours of operation NOTE Cycles are cumulative across humidistat cycles This means that if the humidistat satisfies when the counter is at 15 cycles the count will resume from 15 upon a new call for humidity After the number of cycles as set by the DIP switches the tank will drain and refill If there is no call for humidity for 7 consecutive days the tank will be drained and wait for future demand from the humidistat Switch numbers on top of DIP switch not the numbers below the DIP switch Cycles Before Tank Flush o o Page 22 19 Installing and Connecting the Humidistat 19 1 See wiring diagrams in section 21 for proper connection If you are using COMFORTSTEAM electronic humidistat with outdoor sensor please refer to the instructions included with the humidistat If you decide to use a standard mechanical humidistat connect the mechanical humidistat between the terminals marked GND ground amp IN input on the humidifier electronic board x O O lt q x Z O O Page 23 x O O lt x Z O O 20 Start up and Test Procedure 20 1 Take the 5 16 dia plastic tube previously uncoiled and push one end on the connector located at the bottom of the overflow pan Please see Fig 20a and Fig 20b Fig 20b 20 2 Install the overflow pan under the tank by sliding it on its holding screws You don t have to tighten the
15. ater tank and tighten it Never try to reduce the diameter of the steam hose or any added rigid piping It has to be the same as the diameter of the humidifier top steam outlet fitting The steam must flow without obstruction WARNING Do not let the hose sag when it is connected to the duct Please see Fig 14d A sufficient slope with no horizontal section is mandatory to allow any condensation to flow back naturally to the water tank Please see Fig 14e If condensation water accumulates in the hose the steam will not be able to escape normally through the steam delivery tube diffuser and will lead to a malfunction of the humidifier Please keep in mind that the hose will soften when heated and will have a tendency to sag Warm air duct Warm air duct Continuous slope without sagging is MANDATORY x Cut hose to the shortest length possible Min 12 Unit must be installed a minimum of 12 below the steam delivery tube Warm air Duct x O O lt x Z O O IDEAL CORRECT Fig 14e Fig 14f NOTE If it is not possible to get enough slope for the condensation to return properly to the water tank then an S shaped steam trap not supplied must be installed at the lowest point of the steam hose This steam trap hose should have a minimum height of 4 Please see Fig 14f Page 17 x O O lt x Z O O 15 Installing the Humidifier For ease of service keep a minimum space
16. difier Please find an accessible location on the duct and make sure you have a minimum length of 35 of straight duct downstream without elbows or other obstructions on which the steam could condense to allow the steam to disperse easily into the airflow Once a suitable location has been found make a 1 1 8 middle insertion hole in the warm air duct for the steam diffuser For a horizontal duct make the 1 1 8 hole in the lower third of the duct height Please see Fig 14a For a vertical duct make the 1 1 8 hole in the middle of the duct Please see Fig 14b Note For High Velocity systems the diffuser should be installed in the RETURN and not the warm air duct Fig 14a HORIZONTAL DUCT Fig 14b VERTICAL DUCT Warning Before installing anything on a duct always check that you are not about to cut or drill into an air conditioning coil or electrical accessories 14 2 Insert the steam delivery tube diffuser in duct and align arrow to point up Fasten the steam diffuser to the duct using four 8 x 1 2 screws provided in Kit 10S Make sure the holes on the steam diffuser where the steam exits from are pointing up Please see Fig 14c Fig 14c 14 3 Install one end of the steam hose onto the steam diffuser using a hose clamp and tighten it Page 16 14 4 After installing the humidifier Section 15 use the second supplied hose clamp to install the other end of the steam hose onto the steam outlet on the top of the w
17. e resulting in property damage Do not install the humidifier directly on the furnace housing Always check that you are not about to cut or drill into an air conditioning coil or electrical accessory during installation Do not install a humidifier if the city water pressure exceeds 90 psi Check the local codes related to pressure reduction Do not install the steam delivery stub or steam diffuser in the supply duct if the pressure exceeds 0 5 Water Column 0 125 kPa The installation wiring and plumbing of the humidifier must comply with national state and local electrical plumbing and building codes Electrical wiring and water lines must not come in contact with sharp edges or hot surfaces Make certain an appropriate drain system is installed and there is no resistance to the flow of the discharged water Do not set the humidity level higher than that recommended or condensation damage will occur Please beware of sharp edges when you cut into a metal duct Always shut the power off before you start the installation or when doing maintenance An electric shock from 120 or 240 volts could cause serious injury or death When you perform maintenance please be careful because the unit can be extremely hot Always allow enough time for the unit to cool down To prevent electric shock or injuries never operate the humidifier without the cover as there are high voltage and high temperatur components inside This humidifier will only w
18. ease note that it may take a few minutes to bring the water to a boil The steam exits the water tank through the steam outlet and steam hose 20 12 The steam moves through the hose to the diffuser and is released into the warm air duct where it mixes with the moving air 20 13 As water evaporates in the tank the electric valve opens as needed to maintain the proper water level Page 24 20 14 When the humidity reaches the desired level the humidifier stops producing steam The unit may drain periodically in order to eliminate the residues and keep the tank as clean as possible The humidifier also drains after a certain number of boiling refill cycles If there is still a demand from the humidistat after draining the tank refills and starts to produce steam again 20 15 When the humidistat is satisfied the fan continues to run for a short period of time in order to eliminate the steam from the ducts 20 16 When everything is working fine put the cover on the unit and attach it by turning the 1 4 turn latch to the right 20 17 Please don t forget to leave this instruction manual with the customer Page 25 x O O lt q x Z O O 71 3 30 1 yr O io NYS PO 7 TTOST Po sI I E 1 WA 7 I I f dic STAGOW A0VZ E ee Loe 1
19. hon P trap Please see Fig 15b Water Hammer Absorber D com FORTSTEAM_ x O O lt q x Z O O of 6 between the end of the tubes and For the correct operation of the the water in the siphon siphon this tube must have a Warning These two tubes cannot touch lt NEU Ne the water in the siphon Keep a distance Keep this hose straight minimum length of 18 An air gap is mandatory between the tubes and the rigid drain pipe CN j Siphon P trap 0 Drain cap Water Fig 15b aren 15 6 Since the unit is equipped with water level sensors it is important to install it level from left to right and from back to front 15 7 Draw a level horizontal line on the wall and install two screws 8 minimum spaced at 11 5 8 from each other to hook the humidifier on the wall then install two screws at the bottom of the unit and tighten them partially 15 8 Level the unit and tighten the four screws firmly Page 19 x O O lt x Z O O 16 Installing the Water Supply Important Notes e Turn off the main water supply before beginning e The supply valve not supplied must be attached to a cold water pipe only close to the humidifier Since the unit is draining hot water cold water is added to reduce the temperature before sending the water to the drain e We recommend installing a quarter of a turn shut off valve not supplied
20. in Problem with the water Internal problem Humidifier cannot level sensors inside the read the water level properly and unit Stops Itself Turn the main power OFF then call our service company Turn the main power OFF then Humidifier cannot fill properly and Check the water supply circuit Automatic Reset when supply Stops itself Heating elements and Check if the water supply valve is switching main power ON supply valve are switched off open again Call your service company Inadequate water Turn the main power OFF then Automatic Reset when Humidifier cannot drain properly Risk 0 Inadequate drainage i Close the supply valve switching main power ON of overflow the unit stops itself Call your service company again Turn the main power OFF then Check the air filter in the furnace Automatic Reset when It may be clogged up error conditions disappear Call your service company Not enough air flow or pressure in the supply Humidifier stops itself duct Temperature inside the tank exceeded the high This is a very serious condition temperature limit and The humidifier stops itself and cannot the safety switch has restart without service tripped Only the service company can reset the unit after checking all functions Turn the main power OFF then Call your service company Page 6 8 Cleaning the tank As with any device evaporating water some minerals normally diss
21. od of time in order to eliminate the steam from the ducts and the unit goes to ready mode waiting for the next call from the humidistat Page 2 4 How to Control the Humidity 4 1 Humidity level and comfort are personal matters but it is generally acknowledged that a Relative Humidity of 35 40 is desirable However you should take the outside temperature into consideration before setting the humidity level in order to avoid condensation on the windows 4 2 If you installed a ComfortSteam humidistat and an outdoor sensor a setpoint adjustment will be done automatically as the outdoor temperature falls The outdoor sensor reduces the setting of the humidistat according to the outdoor temperature during cold days without having to set the humidistat knob manually It does the opposite during mild days Please see Fig 4b for the percentage of relative humidity on the electronic humidistat label The middle of the scale corresponds to the middle of the comfort zone approximately 35 RH Relative Humidity 4 3 If you are using a mechanical or other humidistat the adjustment according to the outside temperature will have to be done manually For your information the following table shows the recommended setting of the humidistat according to the outside temperature Please see Fig 4a COMFORTSTEAM_ HUMIDIFICATION SYSTEM Outside Temprature Recommended Setting 22 F 30 C 15 13 F 25 C 20 4 F 20 C 25 5 F 15 C
22. olved in the water may create deposits inside of the unit Even though the unit is draining and flushing itself during normal operation it will require a bit of maintenance from time to time WARNING e The water tank and its contents can become extremely hot Please be careful when you handle it e The tank may have water inside 8 1 To drain the humidifier ensure that the humidistat is calling for humidity You may have to adjust the setpoint higher to make this happen then cycle the main power and the unit will enter a drain cycle It may take a few minutes for the tank to begin filling as it needs to do to envoke the siphon draining system Once the unit is drained there will be approximately one inch of water in the bottom of the tank At this time the main power should be turned off and the unit should be allowed to cool Wait until the unit has cooled before proceeding with the following steps 8 2 Before proceeding ensure the main power is OFF 8 3 Remove the cover by turning the two 1 4 turn screws to the left 8 4 Unplug the white quick connect wire connected on the water pan at the bottom of the unit This wire is connected to the overflow sensor Please see Fig 8a Main drain Tube White Wire Overflow Pan Overflow Drain Tube Rigid Drain Pipe Fig 8a Page 7 8 5 Pull the plastic tube attached to the bottom of the unit out of the rigid drain pipe on the wall You do not have to remove the plastic tube at
23. ork with non demineralized water The maximum water supply temperature is 86 F 30 C Instructions and User Manual for the Homeowner 2 View of the unit 2 1 External view of the humidifier Fig 2a COMFORTS CAM_ HUMIDIFICATION SYSTEM 2 2 Water Tank Top View Please see Fig 2b 2 3 Water tank Side View Please see Fig 2c Manual Thermal Cut Out Water Level Sensors Electric Valve Steam Outlet Heating Element Tank Cover Tank Latch Internal Drain Outlet Water Tank Factory installed with hose Fig 2c Page 1 3 Startup 3 1 The startup of the humidifier is done in as follows e Put the main power ON at the electrical panel The green pilot light comes ON The humidifier is ready to work e Open the water supply valve e Adjust the knob on the humidistat Note The humidifier may perform a flush cycle prior to producing humidity If the yellow drain LED is lit and the unit appears not to be operating properly allow the unit at least 15 minutes to begin normal operation This is considered normal as the control system ensures that all systems are stable before operation Working Principle 3 2 Unlike other types of humidifiers which produce humidity by passing warm air on a water curtain a rotating pad or another type of media this humidifier produces humidity from steam dispersed directly into the supply duct 3 3 A humidistat installed either on the wall or the air return duct con
24. s 18 1 A dedicated breaker in the main panel or fused disconnect must be installed 18 2 The voltage of the available power supply must be the same as the one required by the humidifier Except for the 120 volt model all other humidifiers need a 3 wire connection L1 L2 Neutral in order to supply 120 volts to the transformer located on the control board 18 3 Ensure that the wire size and protection equipment conform to the sizes required by the Electrical Code 18 4 Wire according to the wiring diagram supplied in the cover of the unit 18 5 Starting the fan is mandatory with this type of humidifier The electronic controller board has a small relay that supplies a dry contact at the terminals marked FAN to start the furnace fan The installer must use this contact to engage a bigger relay that starts the fan motor Please refer to the furnace instruction manual to find the right wiring diagram The standard rating of these contacts is 3A 240VAC or 6A 120VAC Please do not exceed these ratings 18 6 Adjusting the DIP switches located on the lower right corner of the circuit board will change how the humidifier handles automatic tank flushes The humidifier will completely drain and refill with fresh water after a predetermined number of refill cycles Every time the unit replenishes the tank while producing steam is counted as one cycle The table below shows how to set the DIP switches in order to make the unit flush the t
25. s open thus filling the humidifier The humidifier is in draining mode Not active on residential models Page 5 6 What To Do if a Malfunction Occurs 6 1 Shut the main power OFF and restart the humidifier to see if the error code disappears 6 2 If you see a water leak follow the water supply tube and close the valve installed on the water pipe located near the humidifier 6 3 Please refer to the error code table to identify the possible cause of the malfunction and the actions that you can take 6 4 Should the problem persist please call your service company They are the best qualified to help you quickly Describe the problem to them and mention the error code you observed on the front panel They may help you solve the problem over the phone If needed they will fix the problem themselves or call our technical service 6 5 Should you attempt to look at the unit yourself please apply all appropriate safety measures Shut the main power OFF and wait for the unit to cool before you open it 7 Description of Error Codes Number of flashes of the Error Description Humidifier Status red light Turn the main power OFF then Open the unit and check for leaks Automatic Reset when bs 7 H i Check the drain tube switching main power ON P Close the supply valve and call for lagain Service Actions to be Taken by the Owner Automatic Reset when Switching main power ON aga
26. screws 20 3 Reconnect the white wire for the overflow sensor on the water pan 20 4 Cut the two drain tubes and insert them in the rigid pipe Note that the main silicon drain tube must have a minimum length of 24 below the bottom of the unit to allow the siphon to work properly It is important to leave an air gap between the soft tubes and the rigid pipe 20 5 Turn the handle of the water supply valve fully counter clockwise to bring water to the humidifier and let the water pressure enter the system 20 6 Follow the water supply path completely and carefully check for leaks at the fittings 20 7 Turn the breaker ON to supply power to the humidifier The green light comes ON to confirm that the unit is ready to work 20 8 Test of the On Standby button Press the white button once The green light goes OFF then flashes indicating that the unit is in standby mode but still powered Press the white button again and keep it depressed for 3 seconds to power the humidifier The green light will come ON confirming that the unit is ready to work 20 9 Turn the humidistat clockwise past the middle of the scale to create a demand for humidity 20 10 The tank fills to the proper water level 20 11 The fan control starts the fan to move the air as the humidifier starts boiling water and produces steam If the fan cannot start the humidifier suspends the ongoing operation If the air pressure is insufficient the unit will stop by itself Pl
27. tached to the bottom of the pan Remove the overflow pan from the unit by slightly loosening the front screw then lifting the front of the pan off the screw and pulling it towards you Please see Fig 8a Remove the main drain tube from the rigid drain pipe attached to the wall and check that they are both clean and clear from deposits 8 6 Check that the water tank is not too hot to handle Unfasten the latch around the water tank and remove the tank from the main body of the humidifier by pulling it down When you remove the tank it is possible to clean the round o ring gasket but don t discard it NOTE This round gasket is mandatory and the unit will not work properly without it 8 7 Soap or vinegar can be used to clean the water tank the heating element and the tips of the level sensors Other cleaning products used to remove scale lime or calcium are also available on the market but DO NOT use a metal brush or any strong acids to clean the tank as they may damage the stainless steel 8 8 Once completed reinstall the round gasket around the water tank collar Please see Fig 8b Align the two arrows located at the front of the tank and the fixed part while lifting the tank in place Please see Fig 8c Apply even pressure to secure the tank properly in the top part Then close the latch holding the tank in position Verify that the o ring gasket and tank are seated properly Fig 8b Fig 8c Page 8 8 9 8 10 8 11 8 12 8
28. thout its written consent voids this warranty 10 4 Herrmidifier s responsibility shall be limited in any case to the replacement or repair in its factory or in the field by its own personnel or by others chosen by Herrmidifier at its option of such steam humidifier or parts thereof as shall prove to be defective within the warranty period 10 5 Herrmidifier will not be held responsible for accidental or consequential damages nor for delays nor for damages caused by the replacement of the said defective steam humidifier Herrmidifier Inc 101 McNeill Rd Sanford NC 27330 Page 11 x O O lt x Z O O Detailed Instructions for the Contractor 11 Unpacking the Unit 11 1 Contents Please inspect the carton s contents and report any missing parts or damage immediately 1 Steam Humidifier Unit 1 Main Drain tube 32 long already installed and coiled inside the unit 1 Steam hose 2 feet or 4 feet long x 1 inch I D depending on model 1 Steam delivery tube 6 L or diffuser 12 15 or 19 L depending on the humidifier model 1 Instruction and maintenance manual 1 Plastic bag containing installation material and hardware as follows 2 Adjustable hose clips for the steam hose 1 Water hammer absorber Red rubber hose with two brass fittings Not supplied with model CFS 05B 1 Small bag KIT 10S 1 Water supply tube 1 4 dia x 7 long 1 Overflow Drain tube for the pan 7 16 dia
29. trols the unit Adjust the setpoint of the humidistat according to your need or comfort Please read the next section about the humidity control 3 4 When the humidistat senses a need for humidity it starts the humidification process 3 5 The tank fills with water 3 6 The electronic control starts the fan in the furnace to move the air as the humidifier starts boiling water and producing steam If the fan cannot start i e there is no air movement to transport the steam or insufficient air pressure the humidifier stops itself Please note that it may take a few minutes to bring the water to a boil The steam exits the water tank through the steam hose moves to the steam delivery tube installed in the warm air duct and is released into the duct where it mixes with the moving air 3 As water evaporates the electric valve opens as needed to replenish the water in the tank 3 8 When the humidity reaches the desired level the humidifier stops producing steam In order to eliminate the residues and keep the tank as clean as possible the humidifier also drains after a certain number of boiling refill cycles This is determined by the DIP switches on the lower right corner of the electronic control board If there is still a demand from the humidistat after draining the tank refills and starts to produce steam again This process is part of the self cleaning feature 3 9 When the humidistat is satisfied the fan continues to run for a short peri
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31. unit checks whether there is enough air pressure in the warm air duct to activate the humidifier 17 2 The probe has to be installed in the warm air duct as close as possible to the humidifier but upstream before the steam diffuser A 48 long plastic tube is supplied to connect the pressure probe to the humidifier Warning Before installing anything on a duct always check that you are not about to cut or drill into an air conditioning coil or electrical accessories 17 3 Drill a hole 3 8 dia in an accessible location in the warm air duct 17 4 Insert the probe and fasten it s base to the duct using two sheet metal screws The arrow visible on the probe flange indicates the air flow direction in the duct i e the curved end of the probe has to face the air flow Please see Fig 17a and Fig 17b Air flow _ Air duct Air Pressure B x O O lt Fig 17a 8 8 x Fig 17b lt O O 17 5 Push one end of the plastic tube onto the probe outlet Slip the other end of the tube onto the plastic barbed connector at the end of the tubing already attached to the humidifier Please see Fig 176 This end is connected to humidifier Fig 17c Page 21 x O O lt x Z O O 18 Making Electrical Connections NOTE All internal wiring is done at the factory All external wiring shall be done by a qualified electrician and must conform to procedures regulations and local code
32. x 24 long 1 Pitot tube with plastic tube 5 16 dia X 48 long NOTE The electronic humidistat and the outdoor reset sensor are optional They may be purchased separately The humidistat can be either wall type RH or duct type DH 11 2 Water Tank Detailed View Please see Fig 11a Top View Manual Thermal Cut Out Water Level Sensors Electric Valve Steam Outlet Heating Element lt Tank Cover Tank Latch Fig 11a Internal Drain Outlet Water Tank Factory installed with hose h a Page 12 12 Dimensions and Available Models 12 1 Humidifier dimensions Fig 12a 11 5 8 x O O lt q x Z O O 12 2 Available models Fig 12b Capacity Lbs Hr Power Voltage Current Kw V A wm as 240 120 12 5 12 5 6 240120 Page 13 13 Detailed View and Wiring View of the top of the unit Fig 13a Electric Black O Steam Outlet Heating Element Black O Manual High Level Thermal Cut out SS Level lt j amp Sensors O Q lt x lt O O Yellow White Green Blue Blue Red Red Water Pan White Page 14 View and list of the wire harness by color and function Please see Fig 13b amp Fig 13c c T Do 6 gt gt oo CD mm gt Ground Overflow Sensor connection connection 1 Z _
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