Taco 3350-T3 Installation Guide
Contents
1. CNA NANNNANAS SSASSSSASSSSS Nyy y SSSA 5 ES DANII X gt A OQO 5 HAE S OO ZI aL N A A D N NS Gf J D N Za ffa 4 4 A zA AND ART N 5 S LLL LIA ns et 4 f Te D 3 Coe lA kL DA ZNA N A ZZA GLL 114 14 UNS 2A2. activate the fast fill simply push in the button marked fast fill located on top of the PRV figure 4 When the set pressure is reached the fast fill button will pop out The valve is now out of the fast fill mode and back into the normal operating mode Figure 4 NOTE If the fast fill button is unintentionally pushed in prior to installation it may be returned to the normal operating mode as follows 1 Unscrew and remove the lock knob carefully so as not to lose the spring 2 If the spring is still inside the lock knob remove it 3 Using a suitable tool such as a small screwdriver or pen reach inside the lock knob and push the button back out 4 Put the spring back into the lock knob and screw the knob back onto the cartridge Maintenance To clean the integrated strainer in the pressure reducing valve close the isolating valve upstream of the unit Remove the PRV cartridge by turning the black 8 point cam nut on the cartridge counter clockwise and pull out Clean with water only Reverse the procedure to install figure 5 Caution Do not over tighten the cartridge as this may damage the threads in the new cartridge or in the valve body and require that they be replaced Figure 5 Installation Diagram TACO TACO 4900 SERIES T CIRCULATOR COLD SUPPLY DIAPHRAGM TYPE EXPANSION TANK WATER BOILER Dimensions LLL BD meg OVA pT Keay 7 SA BINS WIAA 6 ae S Sr EEL
3. Submittal Data Maximum Inlet Pressure Adjustment Range Maximum Temperature Factory Setting Media Materials of Construction Body Cartridge Wetted Parts Replacement Cartridge i F A SU Uj 250 psi 10 50 psi 210 F 12 psi Water Forged Brass Stainless Steel Engineered Plastics Bronze EPDM Seals Cartridge Assembly Part Number 3350 005 RP LIMITED WARRANTY STATEMENT Taco Inc will repair or replace without charge at the company s option any product or part which is proven defective under normal use within one 1 year from the date of start up or one 1 year and six 6 months from date of shipment whichever occurs first In order to obtain service under this warranty it is the responsibility of the purchaser to promptly notify the local Taco stocking distributor or Taco in writing and promptly deliver the subject product or part delivery prepaid to the stocking distributor For assistance on warranty returns the purchaser may either contact the local Taco stocking distributor or Taco If the subject product or part contains no defect as covered in this warranty the purchaser will be billed for parts and labor charges in effect at time of factory exami nation and repair Any Taco product or part not installed or operated in conformity with Taco instructions or which has been subject to misuse misapplication the addi tion of petroleum based fluids or certain chemical additiv
4. ate the set point indicator so that the pressure setting is always visible figure 1 2 The 3350 PRV connects via a 2 NPTF on the outlet and may be connected using either the 1 2 NPTF or the Taco union threads on the inlet The Taco union threads are more com monly used on existing installations already connected by a union nut To use the union connection remove the plastic thread protector on the valve inlet and connect the existing union nut Replace the old union gasket with the new one supplied with the 3350 Note This product should be installed by profession als familiar with the correct function and performance of hydronic heating systems and their associated components Caution Protect the 3350 from freezing and exposure to chemicals or solvents Figure 1 Adjusting the Set Presure 1 Turn the green locknut counter clockwise to loosen figure 2 2 Turn the adjustment knob figure 3 counter clockwise to reduce pressure or clockwise to increase the pressure until the indicator points to the desired pressure setting 3 The PRV does not release pressure When adjusting to a lower setting any excess pressure will need to be released through a suitable release point Turn the green locknut clockwise until finger tight Figure 2 Fast Fill The 3350 is equipped with an automatically resetting fast fill fea ture The fast fill overrides the set pressure during filling and purging of the system To
5. es to the systems or other abuse will not be covered by this warranty If in doubt as to whether a particular substance is suitable for use with a Taco product or part or for any application restrictions consult the applicable Taco instruction sheets or contact Taco at 401 942 8000 Taco reserves the right to provide replacement products and parts which are substantially similar in design and functionally equivalent to the defective product or part Taco reserves the right to make changes in details of design construction or arrangement of materials of its products without notification TACO OFFERS THIS WARRANTY IN LIEU OF ALL OTHER EXPRESS WARRANTIES ANY WARRANTY IMPLIED BY LAW INCLUDING WAR RANTIES OF MERCHANTABILITY OR FITNESS IS IN EFFECT ONLY FOR THE DURATION OF THE EXPRESS WARRANTY SET FORTH IN THE FIRST PARAGRAPH ABOVE THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR STATUTORY OR ANY OTHER WARRANTY OBLIGATION ON THE PART OF TACO TACO WILL NOT BE LIABLE FOR ANY SPECIAL INCIDENTAL INDI RECT OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF ITS PRODUCTS OR ANY INCIDENTAL COSTS OF REMOVING OR REPLACING DEFECTIVE PRODUCTS This warranty gives the purchaser specific rights and the purchaser may have other rights which vary from state to state Some states do not allow limitations on how long an implied warranty lasts or on the exclusion of inci dental or consequential damages so these limitations or e
6. xclusions may not apply to you ComFORT Mape Easy TACO INC 1160 Cranston Street Cranston RI 02920 Telephone 401 942 8000 FAX 401 942 2360 TACO Canada Ltd 8450 Lawson Road Unit 3 Milton Ontario LOT 0J8 Telephone 905 564 9422 FAX 905 564 9436 Visit our web site at http Awww taco hvac com Printed in Germany Copyright 2010 TACO Inc a Maca Instruction Sheet Cartridge Pressure Reducing Valve PRV SUPERSEDES January 2008 EFFECTIVE January 1 2010 Plant ID 001 3941 Cartridge Pressure Reducing Valve PRV Application Taco s PRV Boiler Feed Valve is designed for use in today s Hydronic heating systems The model 3350 PRV reduces incoming pressure and automatically maintains the system pressure to the valve s adjustable set point If the system pressure drops below the valve s set point it will automatically add water to the system It is suitable for systems with fill pressure requirements between 10 50 PSI The Taco PRV showcases a fast fill button with automatic reset The valve automatically exits the fast fill mode once the system is full and the desired set pressure is reached No more manually holding the valve open or locking it in an open position possibly over pressurizing to the point of setting off the relief valve Installation 1 Install the valve in the direc tion indicated by the flow arrows on the body The valve can be installed in any orientation Rot
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