Honeywell Thermostat H8908C User Manual

H8908B Humidistat Dehumidistat INSTRUCTIONS Control d humidit 20 0 FOR WIRING DUCT MOUNTING REMOVAL 1 H8908B Humidistat Mounting the control in an area with average temperature and average relative following mounting instructions are for mounting H8908 on the wall next to the T8600 When install the H8908 at another location modify the procedure fit the installation Hold the mounting template included next to the Select the mounting side for the H8908 template is reversible for mounting on either left or right side of the T8600 See Fig 2 Mark the holes for the two mounting screws Then mark the hole for the low voltage on the template that corresponds with the selected in step 1 Remove the template and drill the holes Run low voltage wiring to the location and pull 6 in 152 mm of wire through the hole Plug the hole with nonflammable insulation to drafts from affecting the control opera H8908B Humidistat and H8908C Dehumidistat controllers provide automatic low voltage of humidifiers and dehumidifiers or ventilators in central heating and air conditioning sys They have a spst snap acting dust proof switch are designed for wall or surface duct mounting Installing this Product Read these instructions carefully Failure to follow could damage the product or cause a haz condition Check the ratings given in the instructions and on product to make sure the product is suitable your application must be a trained experienced service After installation is complete check out product as provided in these instructions Injury Hazard supply can cause electrical shock power supply before beginning and Mounting styling of the H8908 is designed to blend with the T8600 family of Honeywell Chronotherm IV Programmable Thermostats A mounting tem is included for mounting the H8908 next to the The H8908 can also be mounted at any other location in the living area or equipment See Fig 1 The H8908 electrical connections are not with the thermostat U S Registered Trademark 1999 Honeywell Inc cid 127 cid 127 All Rights Reserved 1341 HUMIDISTAT H8908C DEHUMIDISTAT Remove the H8908 case from the base See 1 Position the base on the wall with the arrow up Use the two 1 in 25 mm mounting screws to the base to the wall LOCATION in 152 mm in 381 mm HOLES FOR MOUNTING ON RIGHT LEFT HOLES FOR MOUNTING ON LEFT 3 Selecting duct location for control 2 AIR DUCT 2 Positioning mounting template 18 to 22 gauge wire for proper wiring Connect the low voltage wires to the leads on the Replace the H8908 case Mounting mounting near an elbow area locate the 6 in 152 mm upstream from the so the element is exposed to the normal Fig 3 Locate the control at least 8 in 203 mm from the humidifier or dehumidifier supply in the return air duct See Fig 3 Apply the duct template to the duct location Use the duct template Fig 4 to make the open and mounting holes for the H8908 Remove the H8908 case from the base See 1 Position the foam gasket on the H8908 base Position the base on the duct with the arrow up Use the four 1 in 25 mm mounting screws to the base to the duct Connect the low voltage wires to the leads on the Replace the H8908 case 18 to 22 gauge wire for proper wiring DRILL 7 64 IN DIAMETER 4 X 7 64 PO TEMPLATE DE GAINE Damage Hazard careful when selecting control and cutting hole in ductwork not cut or drill into air conditioning electrical accessories not install control on supply hot air ductwork use template Remove backing and apply template to duct Cut along template dotted line and drill the holes EN GARDE d endommager le mat attention au moment de choisir du r et de percer les dans la gaine pas couper ou percer les accessoires ou de climatisation pas installer le r sur la gaine air chaud du gabarit Retirer l endos du gabarit et placer le gabarit la gaine Couper le long de la ligne pointill du gabarit percer les trous de fixation 4 Positioning return air duct template Injury Hazard supply can cause electrical shock and power supply before installation or wiring must comply with applicable local codes ordi and regulations Make wiring connections to humidifier or dehumidifier ventilator if available otherwise see typical wiring in Fig 5 through 12 models of fan centers include humidifer so the current sensing relay or sail switch not needed not using a current sensing relay or sail the humidifier must be energized dur blower motor cycles for proper operation multispeed blower applications do not wire high voltage side of the transformer to the power source that services the furnace Premature transformer burnout can HE360 fan powered humidifier models the two yellow wires are connected to the The remaining two red wires are only with electronic humidity controls CONTROL DISCONNECT MEANS AND OVERLOAD PROTECTION REQUIRED HUMIDISTAT H8908C DEHUMIDISTAT WIRE SUPPLY PROVIDE DISCONNECT MEANS OVERLOAD PROTECTION AS REQUIRED WIRING 7 Typical wiring diagram of current relay with humidifier SUPPLY PROVIDE DISCONNECT MEANS OVERLOAD PROTECTION AS REQUIRED WIRING 8 Typical wiring diagram sail switch with humidifier WIRING WIRING THE INSTALLATION INSTRUCTIONS WITH THE STEAM HUMIDIFIER WIRE THE SYSTEM FAN VAC WIRING 9 Typical wiring diagram for steam humidifiers 5 Typical wiring diagram for with fan interlock IV THERMOSTAT CONTROL OR COIL SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD AS REQUIRED VAC WIRING 6 Typical wiring diagram for system 2 speed fan motor OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED 10 Typical parallel wiring of humidity controller Chronotherm IV Thermostat for and mildew control HUMIDISTAT H8908C DEHUMIDISTAT IV THERMOSTAT OR COIL OVERLOAD PROTECTION DISCONNECT MEANS AS REQUIRED 11 Typical series wiring of humidity controller Chronotherm IV Thermostat for and mildew control 12 Typical wiring diagram for HR150 ER150 and ER200 Ventilator HD220 Dehumidifier applications Control Adjustment maintain optimum humidity control without causing on cold surfaces such as windows the must adjust the setpoint as the outdoor changes reduce the relative humidity reduce the setpoint three percent relative humidity every 24 To increase the relative humidity increase the