Lenox wb2-17a User's Manual
Contents
1. LENNOX HUMIDIFIER 2003 Lennox Industries Inc 504 882M Dallas Texas USA pe HEALTHY CLIMATE HUMIDIFIERS INSTALLATION INSTRUCTIONS FOR LENNOX MODEL WB2 17 amp WB2 17A ATTENTION INSTALLER This product must be installed by a qualified heating and air conditioning contractor This product must be installed in compliance with all local state and federal codes AWARNING Electrical Shock Hazard Specifications BYPASS HUMIDIFIER Model WB2 17 amp WB2 17A Unit dimensions 13t W x 15 2 H x 91 s D 6 dia round opening Can cause injury or death Disconnect all electrical power supplies before servicing AWARNING Risk of Property Damage Injury or Death Plenum Opening 98 4 W x 12 2 H Installation adjustments alterations service and maintenance must be performed by your Lennox dealer AWARNING Risk of Scalding Water Feed Rate 6 gph Electrical Data 24V 60Hz 0 5 AMP Water temperature over 125 F can cause severe burns and scalding instantly Shut off the hot water supply before disconnecting or tapping into any hot ACAUTION Risk Of Sharp Edges Hazard Equipment sharp edges can cause injuries Avoid grasping equipment edges without protective gloves ACAUTION WB2 17A For detailed humidifier control installation and wiring instructions see form Publication No 504 879M Included with humidifier Risk of Property and Equipment Damage Water heating system ca2. 1 Place unit on flat surface and pull front cover up on right side Lift evaporative media and scale control 7 insert out at the top 2 The unit is assembled for left side discharge If right discharge is necessary remove the right and left screws from the unit ey p E interior side walls and exchange the two sides x Reassemble using existing screws 3 Using a level position the template at least 1 2 above the furnace housing or cooling coil if applicable for clearance of the drain line Trace around template edges Remove the template and accurately cut the plenum opening 9 4 Wx12 2H being careful to avoid injury from sharp edges 4 Place the unit into the plenum opening so that the locking tabs on the bottom are closed down onto the lower sheet metal edge While holding the unit in place install two screws at the top of the unit interior 5 Install a 6 collar in a convenient location on the opposite plenum Slip on a 90 elbow and measure the length of 6 round duct required to make the connection The 6 duct will fit into the round collar on the side of the unit If the system has central air conditioning add a duct damper Assemble components using sheet metal screws Support bypass ducts in excess of 4 to prevent sagging 6 Replace the evaporative assembly complete with the evaporative media by fitting the drain tube into the At round receptac
3. e body g Install 1 4 water supply line from humidifier using compression fittings NOTE For pipe over 1 O D use 1 4 20 1 3 4 long bolts 9 Tap into a water supply line with the saddle valve furnished The humidifier will function with cold hot softened or unsoftened water The use of service hot water 140 F Max and constant blower operation will provide maximum evaporative capacities Note The saddle valve is designed to be fully opened or closed Do not use it to regulate water flow 10 Connect tubing from the saddle valve to the inlet side of the solenoid valve using 1 4 O D copper tubing not furnished DOUBLE WRENCH TO PREVENT LEAKING AND VALVE BREAKAGE 11 Connect 1 2 1 D plastic hose not furnished from unit to floor drain Be sure drain hose has continuous slope Use caution if hose clamp is 4 used to not over tighten and crack drain spud NOTE Do not sweat or directly attach metal drain line to fitting Do not use solvent type adhesive when connecting plastic drain hose since damage to fitting could result 1 2 Turn water on 13 Open saddle valve completely and turn on furnace WB2 17 Adjust humidifier setting so that humidifier will turn on Allow humidifier to run until water is observed coming out of drain line Check to see if unit is watertight Check operation to make sure that all electrical components function properly Set humidistat to recommended le
4. le at the bottom of the unit Push the assembly in at the top against the beveled tabs Replace the front cover 7A HUMIDISTAT INSTALLATION INSTRUCTIONS FOR WB2 17 The humidistat is designed for low voltage service to control humidification equipment An increase in relative humidity expands the nylon ribbon that opens the control switch to stop operation on the humidifier A decrease in relative humidity reverses the process and closes the control switch See front for wiring diagram DISCONNECT THE ELECTRICAL POWER TO FURNACE BEFORE PROCEEDING LOCATION a Locate on inside wall of living area approximately 5 above floor or in the furnace return air plenum Use enclosed adapter plate for return air installation b Do not locate control in the direct path of furnace discharge air or drafts from open doors and windows c Do not install where operation might be affected by lamps sunlight fireplace registers radiators concealed air ducts and pipes or next to activities that generate moisture d The basic rules for location of thermostats also apply to humidistats GENERAL INSTRUCTIONS a DO NOT ATTEMPT TO REPAIR OR RECALIBRATE CONTROL Controls requiring service should be returned to Lennox Industries b Control must be installed to receive no more than 24 volts c Make sure no bare wires are exposed or insulation damaged Insulation on wire should extend to head of binding screws d Make sure a
5. ll splices are mechanically and electrically secure e To remove dirt or other foreign matter from nylon ribbon and control interior dust lightly with a fine soft brush 7B HUMIDISTAT INSTALLATION INSTRUCTIONS FOR WB2 17A For detailed humidifier control installation and wiring instructions see form Publication 504879M included with humidifier 8 Shut off water supply Open any faucet to relieve water pressure TO INSTALL ON COPPER OR PLASTIC PIPE a Place rubber gasket in center of hole in top saddle clamp Place top and bottom saddle clamp around water pipe Using bolts tighten saddle clamps evenly clamps should be parallel Do Not over tighten b Screw valve body into opening in top saddle clamp and tighten c Tighten gland nut onto valve body d Install 1 4 water supply line from humidifier using compression fittings e You are now ready to pierce the pipe Turn handle until spindle is firmly seated into valve body The water pipe is now fully pierced Turning spindle in shuts valve off TO INSTALL ON STEEL OR BRASS PIPE a Drill 3 16 diameter hole into pipe where saddle valve will be placed b Place rubber gasket in center of hole in top saddle clamp c Place top saddle clamp assembly over hole so that lance fits into hole d Place top and bottom saddle clamp around water pipe e Screw valve body into opening in top saddle clamp and tighten f Tighten gland nut onto valv
6. n be damaged if water supply remains off After humidifier installation is completed turn hot water supply back on Water heating system must be de energized if the main water supply remains shut off Do not set humidity level above recommended or to recommended level if condensation exists on inside windows of any unheated space as condensation damage may result Excess humidity can cause moisture accumulation which can allow the possibility for mold growth in your home Do not install unit in location where freezing temperatures may occur The water line could freeze and crack causing water damage to the home Do not install humidifier or bypass connection on furnace jacket Do not install humidifier or bypass connection on blanked off end of cooling coil where airflow will be restricted Do not connect the transformer to multi speed furnace blower motors or blower motors other than 120 VAC Do not install humidifier where water pressures exceed 125 psi since humidifier damage may result Follow codes in effect concerning pressure reduction Do not install power humidifier on supply plenum where static pressure exceeds 0 3 w c BR CONNECT DRAIN TRANSFORMER TEMPLATE MUST BE LEVEL READ REVERSE SIDE FIRST TOP READ REVERSE SIDE FIRST READ COMPLETE WARNING AND CAUTION INSTRUCTIONS BEFORE STARTING TEMPLATE MUST BE LEVEL Lennox Healthy Climate Humidifier Models WB2 17 amp WB2 17A
7. vel See operating instructions in owners manual WB2 17A Check to see if unit is watertight Check operation to make sure that all electrical components function properly Use humidification System Checkout section of Automatic Humidifier Control Installation Instructions Publication No 504 879M LENNOX HEALTHY CLIMATE HUMIDIFIER 10006151 B2203306A
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