Specification Brand : UCEDER BulletPoint1 : Requires a 20A circuit(Connect 20A adapter or breaker),with 1.5" outlet , min 0.35MPA pressure,suggest work with at least 0.25HP,suitable small bathtub & spa tub /hot tub 3 KW /220V-240V BulletPoint2 : Pls put hot water instead of cold water in the hot tub,we suggest water capacity not more than 400 US gallon,in addition,you need an insulation cover to maintain the temperature,or it will take long time even will not be able to catch up. BulletPoint3 : Adjustable thermostat from 0 - 45 ℃, when the water temperature reaches the set temperature,it will stop automatically. when temperature is dropped down, it will heat up water until your set temperature. BulletPoint4 : Thermostat case is engineering plastic, heating element using UL approval metal pipe electric-heating element, Incoloy800 against high temperature and against causticity dedicated stainless steel pipe. BulletPoint5 : Wrong installation direction will not work,pls ensure that the water flow is in the same direction as the arrow direction on the heater,we suggest need authorize person to install the heater. Color : Black ExternallyAssignedProductIdentifier1 : 052337053549 ExternallyAssignedProductIdentifier2 : 0052337053549 ExternallyAssignedProductIdentifier3 : 00052337053549 IncludedComponents : Beckett F0 0.40-0.75 GPH Burner Head ItemDisplayDimensions_Height : 1 inches ItemDisplayDimensions_Length : 8 inches ItemDisplayDimensions_Width : 1 inches ItemDisplayWeight : 4.99 pounds ItemName : UCEDER Spa Hot Tub Thermostat with Union Nut,Tailpiece and O-Ring Gasket,Adjustable Temperature Thermostat Fits for Small Pool Hot Tubs &Bathtub(H30-RS1 220V 3KW) ItemPackageDimensions_Height : 22.606 centimeters ItemPackageDimensions_Length : 18.2118 centimeters ItemPackageDimensions_Width : 18.6944 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : swimming-pool-heater-and-heat-pump-parts Manufacturer : pool spa part Material : Steel ModelName : hot tub heater ModelNumber : hot tub heater NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 159l PowerSourceType : Natural Gas ProductDescription : Specification: Color: Black Material: Metal Input voltage:220V Power:3KW Frequency: 50/60Hz Model:H30-RS1 Features: Designed specifically for keeping the water in the bathtub at a constant temperature ,we suggest water capacity not more than 400 US gallon Fits for Small Pool Hot Tubs &Bathtub The adjustable maximum temperature is 45 ° C, when the temperature exceeds 45 ° C, the thermostat stops working Simple and practical design the heater come with 2m power cable.The heater 1.5" outlet , min 0.35MPA pressure. we suggest at least 0.25HP / 200W pump, then can insure it work correctly. ProductSiteLaunchDate : 2009-09-01T08:02:49.000-00:00 Size : H30-RS1 220V 3KW Style : H30-RS1 220V 3KW SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 41112209