Fan-coil valves Series

Transcription

1 Fan-coil valves Series Main features Complete range in the following versions : -way - DN: 1/, /4, 1 -way - DN: 1/, /4, 1 -way with 4 ports - DN: 1/, /4 - The -way version and the -way versions with 4 ports can be used as diverting or mixing valves of compact size and reduced weights. The valves are motorized with actuators series C or actuators with stroke. mm with ring nut Mx. A Division of Watts Water Technologies Inc.

2 Description Fan-coil control valves series 11, 11, 411 are used for controlling the flow of hot or cold water in heating and air conditioning systems. They are operated by electric actuators with max. stroke of. mm. such as electrothermic actuator series C. As standard, the valves are available in the configuration with male thread in the following versions : -way series 11 -way series 11 -way with 4 ports series 411 with built-in by-pass. Operation of the valve plug is by electrothermic actuator series C, available in the following versions: NO (normally open) -wire(standard) or 4-wire (with auxiliary microswitch contact) NC (normally closed) -wire (Standard) or 4-wire (with auxiliary microswitch contact) All actuators of the C series can easily be fastened to the valve body with a threaded ring nut. (Mx). 11 Two-way brass valve for fan-coils. ON/OFF operation with actuators series C. Max. operating temperature: C. Disc stroke:. mm. Nominal pressure: 16 bar. Type Part number Dn Kvs Weight (g) /" MM 1, /4" MM, " MM 4, 11 Three-way brass valve for fan-coils. ON/OFF operation with actuators series C. Max. operating temperature: C. Disc stroke:. mm. Can be used both as mixing and diverting valve, except for version 111 which can only be used as diverting valve. Nominal pressure: 16 bar. The Kvs and by-pass Kvs values given in the table alongside refer to the valve used for diverting service. Type Part number Dn Kvs Kvs By-bass Weight (g) /" MM 1,7 1, /4" MM,8 1, " MM 4,,1 VU Tee fitting for creating by-pass in valves series 11 (Dn 1 ). Type Part number Dn Weight (g) VU VU11 1" MM

3 411 Three-way brass valve with 4 connections for fan-coils. ON/OFF operation with actuators series C. Max. operating temperature: C. Disc stroke:. mm. Can be used both as mixing and diverting valve. Nominal pressure: 16 bar. The Kvs and by-pass Kvs values given in the table alongside refer to the valve used for diverting service. Type Part number Dn Kvs Kvs By-bass Weight (g) /" MM 1,7 1, /4" MM,8 1, Soft sealed union with nut for zone valves series 11, 11, 411. Type Part number Dn Weight (g) GAS 1/" x 1/" GAS /4" x /4" GAS 1" x 1" Application The valves are used for shutting off (series 11, two-way) or diverting/mixing (series , -way and -way with 4 ports size 1/ e /4 ), the heat transfer fluid to a heating or air conditioning system as required by the room thermostat (or timing thermostat). The -way fan-coil valves series 11 or -way with 4 ports series 411, thanks to the special configuration of the plug controlling the by-pass flow, can be used equally well as diverting or mixing valves (thus optimizing to the full the various plumbing requirements in assembly). Diverting AB A B Mixing B AB A

4 Operation 4 Operation of the fan-coil control valves 11,11,411 is through the movement of the plug which shuts off the heat transfer fluid: the ON/OFF action of the plug is controlled by the actuator series C whose internal motor consists of a wax thermostatic element activated by a PTC thermistor against a signal sent by a room thermostat (or timing thermostat). The electrochemical actuator series C, in the 4-wire version, is provided with an auxiliary contact for additional controls (metering, control of pumps, fans or other equipment). The mechanical characteristic of the valves is of the Normally Open type. It can be adjusted or fully closed by manually turning the threaded plastic cap, provided on the valve. This threaded cap acts directly on the valve stem. When coupled to the C NC actuator, under rest conditions (actuator not energized), the valve becomes normally closed (NC) (straight way closed and by-pass open if -way type); when the actuator is energized, the valve is opened. When coupled to the C NA actuator, under rest conditions (actuator not energized), the valve remains normally open (NO) (straight way open and by-pass closed if -way type); when the actuator is energized, the valve is closed. The hydraulic flow rate and pressure drops characteristics of the valves are given in appropriate charts; instead, when coupled with the ON/OFF actuators, they assume the characteristics associated with such device. The three-way valves (or three-way valves with 4 ports) are designed and built to be used both as diverting valves (one inlet and two outlets) and mixing valves (two inlets and one outlet). It is recommended to observe the operating Pmax given in the table in order to avoid risk of malfunctions and/or noise. The reliability of the fan-coil control valves 11, 11, 411 is guaranteed by the % testing on the production, which checks the hydraulic seals of the valve body and its components towards the outside and the seal of the plug in its flow shut-off function. Design features Body Stem Spring Plug rubber Brass CW617N Brass with chemical nickel-plating Stainless steel EPDM Technical features common to the entire range Max pressure, models w. constant Kv 16 bar Max pressure, models w. variable Kv bar Min. fluid temperature 4 C Max. fluid temperature 1 C Liquids which can be used Water (with glycol %) Plug stroke. mm By-pass leakage, % Kvs Actuator connection Threaded ring nut M x Installation Choice of the fan-coil control valves depends on the type of plumbing systems as well as the required flow rate and pressure drop characteristics. In systems with -way control valves it is advisable to provide by-pass valves series 466 to ensure a minimum recirculation of the fluid. Before mounting the valves, make sure that the piping is clean, and free from welding slag or the like. It is recommended not to install the valve with the C actuator facing down. The valves can be connected by using the soft-sealed tailpieces series 84 with the range of single-piece or union fittings (-piece). The 1 three-way valves can use the TEE fitting (part No. VU11 - DN 1 ) for making the by-pass.

5 Hydraulic characteristics Valve part number DN Inches DN mm Pre-setting (Kv adjustable) Port size Max. operation pressure PN [bar] Kvs Kv by-pass Pmax Max. differential operation pressure. (noise < 8 dba) [bar] Ps Close off with actuator C NO/NC [bar] Kvs Kv by-pass Pmax Max. differential operation pressure. (noise < 8 dba) [bar] Ps Close off with actuator C NO/NC [bar] WAY VALVES 111 1/" 1 1A 16 1,7 -,8, P 1/" 1 1F 16 1,7 -,8, DP 1/" 1 1A 1,7 -, /4" A 16,8 -,7 1, P /4" F 16,6 -,7 1, DP /4" A 16,8 -, " A 16 4, -,6, P 1" F 16 4, -,6, DP 1" A 16 4, -, WAY VALVES Used as DIVERTER VALVE Used as MIXING VALVE 111 1/" 1 1A 16 1,7 1,,8, 1,7 1,,7 111P 1/" 1 1F 16 1,7 1,,8, 1,7 1,,7 111DP 1/" 1 1A 16 1,7 1,,8 4 1,7 1,, /4" A 16,8 1,8,7 1,, 1,6, 1 114P /4" F 16,8 1,8,7 1,, 1,6, 1 114DP /4" A 16,8 1,8,7 4, 1,6, " A 16 4,,1,6,7 4,,1,4,7 111P 1" F 16 4,,1,6,7 4,,1,4,7 111DP 1" A 16 4,,1,6 4 4,,1,4 4 WAY VALVES 4 PORT Used as DIVERTER VALVE Used as MIXING VALVE /" 1 1A4 16 1,7 1,,8, 1,7 1,,7 4111P 1/" 1 1F4 16 1,7 1,,8, 1,7 1,, P 1/" 1 1I4 16 1,7 1,,8, 1,7 1,,7 4111DP 1/" 1 1A4 16 1,7 1,,8 4 1,7 1,, /4" A4 16,8 1,8,7 1,, 1,6, P /4" F4 16,6 1,8,7 1,, 1,6, DP /4" A4 16,8 1,8,7 4, 1,6, P /4" I4 16,8 1,8,7 1,, 1,6, 1 Red part numbers are standard versions KVs = nominal value of the flow in the main way of the valve in m/h with the valve fully open at a pressure of 1 bar and with water temperature at C Pmax = maximum dynamic differential pressure at the ends of the fully open valve, without risk of noise ( < 8 dba) Ps= maximum static differential pressure at the ends of the valve against which the valve is able to be opened (through its internal spring for the three-way versions; through the actuator for the two-way versions)

6 Overall dimensions (mm) 6 11 DN B C D 11 DN B C D A A Part number DN A B C D 111 1/ 9 1, 1 111P 1/ 9 1, 1 111DP 1/ 9 1, / , 6 114P / , 6 114DP / , , 1, 77, 111P 1 8, 1, 77, 111DP 1 8, 1, 77, Part number DN A B C D 111 1/ 9 1, 68, 111P 1/ 9 1, 68, 111DP 1/ 9 1, 68, 114 / , 69, 114P / , 69, 114DP / , 69, , 9, 111P , 9, 111DP , 9, 411 DN E B D C A Part number DN A B C D E / 9 1, 9, 4111P 1/ 9 1, 9, 4111DP 1/ 9 1, 9, 41114P 1/ 9 1,, P / ,, / , 11, 4114P / , 11, 4114DP / , 11,

7 Connections dimensions (mm) 1F 1A 7 G 1/ G1/ Ø Ø F A G /4 Ø19. G /4 Ø A F G 1 Ø6 G 1 Ø4 1 1

8 1A 1F 8 Ø Ø G 1/ G 1/ A F G /4 Ø. 14. G /4 Ø A F G 1 Ø6 1 1 G 1 Ø4 1 1

9 1A4 1F4 G 1/ Ø G 1/ Ø I4 A4 Ø G 1/ 17. G /4 Ø F4 I4 G /4 Ø19. G /4 Ø

10 Flow rate/pressure drop charts DN 1/ " Straight way Diverting + Mixing Kv 1,7 by-pass Diverting Kv 1, [ kpa ] by-pass Mixing Kv 1, [ m bar ] [ mm c.a. ] PRESSURE DROP [ l/h ] [ m /h ] FLOW RATE DN /4 " Straight way Diverting Kv,8 Straight way Mxing Kv, by-pass Diverting Kv 1,8 [ kpa ] by-pass Mixing Kv 1,6 [ m bar ] [ mm c.a. ] PRESSURE DROP [ l/h ] [ m /h ] FLOW RATE

11 Flow rate/pressure drop charts DN 1 " Straight Way Diverting - Mixing Kv 4, 9 [ kpa ] by-pass Kv,1 [ m bar ] [ mm c.a. ] PRESSURE DROP [ l/h ] [ m /h ] FLOW RATE The descriptions and photographs contained in this brochure are supplied by way of information only and are not binding. Watts Industries reserves the right to carry out any technical and aesthetic modifications to its products without prior notice.

12 Product range Watts Industries - System disconnectors - Backflow protection devices - Check valves - Safety units - Safety relief valves - Pressure reducing valves - Automatic control valves - Butterfly valves - Shut off valves - Measuring gauges - Temperature control - Expansion vessels - Process switches - Fuel products - Gas products - Electronic controls - Installation protection products - Radiator valves - System products - Manifolds and fittings Re-order no UK-IT/1-7-1-Rev. A Division of Watts Water Technologies Inc. Watts Industries Italia S.r.l. Via Brenno, 1-46 Biassono (MI), Italia Ph Fax info@wattsindustries.it -