Motorized ball valves with -wire control 644-644 series SO 900 M 64 SO 900 No. 000 0/ N Replaces 0/07 N unction Zone valves are used to automatically shut-off the flow, redirect or modulate hot and chilled water in hydronic heating and air conditioning systems. he motorized three-way diverting / mixing valves permits two position diverting or three-way mixing with -wire floating outdoor reset controller for injection mixing. he motorized three-way bypass valves permits a system to operate with a continuous flow regardless if the zone valve is in the open or in the by-pass position. he high flow and high close-off performance characteristics of these zone valves, combined with the compact size, makes them particularly suitable to fit inside baseboard or directly in fan coil units. he 644 series motorized ball valves series 644 are used in all types of systems because of the following characteristics: Zero leakage across the valve Quick opening and closing valve operation Operates at very high differential pressures ow pressure drop through the valve Union connections for simple installs and removals Product range 644 series Zone valve -way with 4V -wire control and auxiliary switch...connections /, /4, union sweat or NP 644.. Y series Zone valve -way by-pass with 4V -wire control and auxiliary switch...connections /, /4, union sweat or NP 644 series Zone valve -way diverting with 4V wire control and auxiliary switch...connections /, /4, union sweat or NP 644004 Zone valve actuator, 4V -wire control and auxiliary micro-switch echnical specifications Valve body onnections: / - /4 - sweat or NP Materials: - body brass - ball chrome plated brass - ball seal P with PM O-Rings - stem seal two PM O-Rings Performance: Suitable fluids: water, glycol solutions Max percentage of glycol: 0% Max working pressure: 0 psi (0 bar) emperature range: 0 0 (- 0 ) Max pressure differential: 0 psi (0 bar) ctuator over: self-extinguishing polycarbonate, grey R 900 Synchronous motor: 4 V (± 0%) - 0/60 Hz Power consumption: 4 V nitial current draw: 70 m Micro-switch contact rating: (4V) ime to rotate 90, both directions: 40 s mbient temperature range: 0 (0 ) ynamic starting torque: 70 in lb (8 N m) Wire lead length: 6 in. (00 cm)
imensions 644 series -way H ode 64449 6449 64469 / swt /4 swt swt / /4 7/8 4 7/6 9/6 4 /8 4 /8 /4 7/6 7/6 7/6 7/6 /6 /6 /6 /6 H / 7/6 7/6 / Weight (lb).... H 64440 6440 64460 7/6 7/6 /6 /6 7/6 7/6.. ctuator is in OPN position with brown wire powered. 644.. Y code -way by-pass version ode 64449 Y 6449 Y 64469 Y 64440 Y 6440 Y 64460 Y / swt /4 swt swt / /4 4 /8 4 /8 /4 7/8 4 7/6 9/6 H Weight (lb) 7/6 /6 7/6 /6 7/6 /6 7/6 /6.. 7/6 /6 / /8. 7/6 /6 7/6 7/8 7/6 /6 7/6 /8.. 7/6 /6 / /4. ctuator is in OS position with black wire powered. -way 644.. code, diverter version ode H 64449 6449 / swt /4 swt 4 /8 4 /8 7/6 /6 7/6 /6 7/6 /6 7/6 /6.. 64469 swt /6 6 /4 7/6 /6 7/8 /6. 64440 6440 / /4 7/8 4 7/6 7/6 /6 7/6 7/6 /6 7/6 7/8 /8.. 64460 /6 9/6 7/6 /6 7/8 /4. H Weight (lb) ctuator is in OS position with black wire powered.
onstruction details Valve body Union seals he valves have unions with a flat seat and integral PM o-ring seal. here is no gasket to lose or hold onto during installation. irections of flow and position indicator Removing the actuator exposes the slot on the top of the control stem which engages the pin of the actuator: - it permits opening/closing the valve manually with a screwdriver. - its position shows the direction of flow according to the position of the ball, which is especially helpful when testing or checking the system. Here are three diagrams, one for each type of valve; the position of the slot shows the direction of flow. wo-way valve 644 series Stem seal wo PM o-rings () provide high temperature and oxygen electrolysis resistance from high boiler feed and open system applications. ull-port ball () llows for higher flow with little pressure drop and high 0 psi close off pressure. v UOR OPN POSON (brown wire powered) hree-way valve with by-pass 644.. Y code UOR OS POSON (black wire powered) ctuator ON/O mode he valves can be used in ON/ O mode with a single signal for opening or closing from a threewire thermostat/timer-thermostat or an ordinary switch. OUR v Utilizzo ON/O tramite termostato. va tre fili o modulante su comando da un regolatore a tre punti Rotazione di 90 Modulating mode he 644004 actuator can be controlled by any type of threewire floating controller for outdoor reset on radiant systems, for example. Not recommended for two-way valves because ball is not characterized. rive transmission he tapered coupling between the stem of the valve () and the shaft of the gear motor () produces a constant mesh of the two components. his allows for automatic compensation of the mechanical slack from shaft wear with force () on the stem applied by the pressure of the medium. Sector gear () is extra thick for better motor drive and no stripped gears. UOR OPN POSON (brown wire powered) UOR OS POSON (black wire powered) hree-way diverter valve 644 series low diversion can be modulating with the electrical characteristics of the three-wire control actuator. ON/O mode with thermostat with three wires or modulating when operated by a three-wire floating 90 Rotation Valve actuator coupling he actuator is easy to install or remove with steel clip (), providing direct coupling with automatic locking. am and limit microswitches he cam () that works the limit microswitches () can move vertically and is supported by a tapered spring (). his keeps the contact with the microswitches constant, compensating for wear of the parts over time. motor at the end of travel. his internal switch shuts of the uxiliary microswitch he actuator comes complete with an auxiliary microswitch to stop the pump on closing the valve and vice versa. t turns on average at 80% valve opening. 4. v 4. v UOR OPN POSON (brown wire powered) ll the valves are supplied with the slot/indicator in the horizontal position. ll directions of flow can be reversed UOR OS POSON (black wire powered)
Hydraulic characteristics wo-way zone valve 644 series, sizes /, /4 and hree-way zone valve with by-pass code 644.. Y on by-pass operation, sizes /, /4,.0 v (. Kv) p (psi) (kpa). v (.8 Kv) p (psi) (kpa) 4 0 4 0 0 0 0 0 0. 0.4 0. 0.4 0. 0. 0. 0. 0. 0. 0, 0, 0.0 0.04 0, 0.0 0.04 0, 0.0 0, 0.0 0, 0.0 0.0 0, 0, 0.0 0.0.0... 0 0.. 0 (l/s) (gpm ) 0..0.0..60 0.0 0 (l/s) (gpm ) hree-way zone valve with by-pass code 644.. Y on open operation, sizes /, /4, hree-way diverter valve 644.. code, sizes /, /4 and v (0. Kv) p (psi) (kpa) 4 0 0 4. v (.9 Kv) p (psi) (kpa) 4 0 0 0 0 0. 0.4 0. 0.4 0. 0. 0. 0. 0. 0. 0, 0, 0.0 0.04 0, 0.0 0.04 0, 0.0 0, 0.0 0, 0.0 0.0 0, 0, 0.0 0.0.0... 0.8 0.. 0 (l/s) (gpm ) 0..0.0..60 0.0 0 (l/s) (gpm ).8
OS OPN nstallation. he two-way valve can be installed either on the supply pipe or on the return pipe. 6. o prevent the actuator from reaching high temperatures, where the zone valve is installed there should be constant ventilation. O Max 0,8 M N. he three-way valves with by-pass must be installed on the supply pipe.. he three-way diverter valves can be installed as shown: O Wiring diagrams. onnection diagram for room thermostat () and electric supply. he illustrated connection permits opening and closing the valve according to the ambient thermostat signal. a. on the supply in the diverter /mixer position (common inlet and outlets or ) and ON/O mode b. on the return in the mixer position (that is inlets on and and common outlet ) and ON/O mode. M UOR Max O O OS OPN 4. he valve must be installed with the control stem in the horizontal or vertical position, never upside down. Horizontal stem Vertical stem 4b. or installations with chilled water, having the risk of condensation, the actuator must be installed with the control stem vertical. N Pump disconnection diagram when no zone is in operation. his diagram, using the auxiliary microswitch, permits turning off the pump when the zone valve is closed. f the pump has an input current greater than (4 V) it is necessary to use an intermediate relay.. he actuator can be installed on the valve body in either of the two positions shown. ttach with a stainless steel clip. min. 0 mm OS M OPN UOR Max 6. or installing in a box leave a gap of at least in (0 mm) between the actuator and frame for replacement, if necessary, or maintenance. min. in (0 mm) 6 N Microswitches he motor is equipped with limit microswitches that shut off the motor on reaching the valve open/closed positions. he auxiliary microswitch turns on average at 80% valve opening.
pplication diagrams n systems with zone control, the zone valve shuts off the circuits serving the heat exchanger terminal emitters when the temperature in the room reaches the desired temperature set point on the thermostat. Switching off this circuit can however cause changes in pressure and flow rate throughout the system so it is essential to make sure these changes are kept under control within acceptable limits. System with 644 series two-way zone valves and differential by-pass valve he system works with variable flow rate and it is necessary to keep the pressure differential generated by the zone valves closing under control. his increase, which can reach unacceptable limits for the system to work properly, creates an increase in the flow rate to the circuits still open, with problems for the pumps and the boiler. t is therefore necessary to keep the pressure differentials under control by means of differential by-pass valves or variable speed pumps. Shut-of valve hermostatic valve Manual valve lectric pump Room thermostat ifferential by-pass ir vent valve ifferential by-pass valve System with code 644.. Y three-way zone valve with by-pass
Solar heating system with three-way diverter valve f the water from the storage tank is at a lower temperature than is required (and set on the thermostat) the diverter valve sends the water to the water heater. Otherwise, the valve sends the water to the mixer directly. Shut-off valve lectric pump hermostatic mixing valve Overflow valve xpansion vessel emperature gauge heck valve emperature/pressure relief valve hermostat iverter on the secondary tap water circuit Normally closed valve ntegrated system of solid-liquid/gas fuel boilers When the energy supply of the solid fuel boilers is insufficient to keep the temperature of the heating fluid at the desired value, the diverter valve sends the water into the circuit of the fluid/gas fuel boiler. iverter on the heating circuit
SPON SUMMRS 644 series Motorized two-way ball zone valve with three-wire power open/power closed control. / to sweat union or NP union brass body. ull-port chrome-plated brass ball. all seal made of P with O-Ring in PM. ontrol stem seal with double O-Ring in PM. Union seals with O-Ring in PM. Suitable fluids: water and glycol solutions. Maximum percentage of glycol 0%. Maximum working pressure 0 psi (0 bar). emperature range 0 0 (- 0 ). Maximum working differential pressure (close-off)0 psi (0 bar). Self-extinguishing polycarbonate actuator; grey R 900; synchronous three-wire motor with auxiliary microswitch; electric supply 4 V; power consumption 4 V; dynamic starting torque 70 in lb (8 N m). uxiliary microswitch contacts rating (4 V). Operating time (angle of rotation 90 ) 40 s; ambient temperature range 0 (0 ). 644.. Y series Motorized three-way ball zone valve, by-pass version, with three-wire power open/power closed control. / to sweat union or NP union, brass body. ull-port chrome-plated brass ball. all seal made of P with O-Ring in PM. ontrol stem seal with double O-Ring in PM. Union seals with O-Ring in PM. Suitable fluids: water and glycol solutions. Maximum percentage of glycol 0%. Maximum working pressure 0 psi (0 bar). emperature range 0 0 (- 0 ). Maximum working differential pressure 0 psi (0 bar). Self-extinguishing polycarbonate actuator; grey R 900; synchronous three-wire motor with auxiliary microswitch; electric supply 4 V; power consumption 4 V; dynamic starting torque 70 in lb (8 N m). uxiliary microswitch contacts rating (4 V). Operating time (angle of rotation 90 ) 40 s; ambient temperature range 0 (0 ). 644 series Motorized diverter/mixer three-way ball valve with three-wire power open/power closed control. / to sweat union or NP union, brass body. ull-port chrome-plated brass ball. all seal made of P with O-Ring in PM. ontrol stem seal with double O-Ring in PM. Union seals with O-Ring in PM. Suitable fluids: water and glycol solutions. Maximum percentage of glycol 0%. Maximum working pressure 0 psi (0 bar). emperature range 0 0 (- 0 ). Maximum working differential pressure 0 psi (0 bar). Self-extinguishing polycarbonate actuator; grey R 900; synchronous three-wire motor with auxiliary microswitch; electric supply 4 V; power consumption 4 V; dynamic starting torque 70 in lb (8 N m). uxiliary microswitch contacts rating (4 V). Operating time (angle of rotation 90 ) 40 s; ambient temperature range 0 (0 ). We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice. aleffi North merica, nc. 88 W. Milwaukee Rd Milwaukee, W 08 el: 44-8-60 ax: 44-8-66 sales@caleffi.com www.caleffi.us opyright 0 aleffi