NEW GENERATION HIGH LOW SYSTEMS

Transcription

1 NEW GENEATION HIGH LOW SYSTEMS NEW GENEATION TM-52-DT HIGH LOW SYSTEMS control water temperature for domestic hot water systems, shower rooms and other commercial, institutional and industrial applications Dual thermostatic water mixing valves in a simple piping arrangement provide precise water temperature control of both high and low mixed water flow ranges DUA-trol solid bimetal thermostatic control (Seven-Year Limited Thermostat Warranty) Adjustable high-temperature limit stops set for 12 F (49 ) Mixed water capacities up to 214 (81 l/min) Bronze, brass and stainless steel construction Factory-preassembled and tested systems ASPAK Sizing Program Toll-free technical support

2 New Generation Systems All New Generation High Low Systems are furnished factory assembled and tested with: Large and small TYPE TM thermostatic water mixing valves in an efficient preassembled system designed to meet both high and low demands for mixed water TYPE TM valves, powered by the DUA-trol solid bimetal thermostats with Leonard s exclusive Seven- Year Limited Thermostat Warranty TM valves with 8 F (4 ) minimum differential between supply and outlet temperatures TM valves with integral hot and cold supply checkstops, wall supports and locked temperature regulators Outlet dial thermometer (optional) and ball valve shutoff, pre-piped inlet manifold Install at any location in the piping system, regardless of pressure differentials Full-time standby service eliminates downtime should one mixing valve require maintenance DUA-trol solid bimetal thermostat directly linked to valve porting Internal parts of bronze, brass and stainless steel Locked temperature adjustment setting Adjustable high temperature limit stop Union angle checkstops (with strainers) for top or bottom supplies Selection/Specification Guide NEW GENEATION SYSTEM (MODEL#) (FINISH#) (MOUNTING#) - (OPTION#) MODEL TM-42A* TM-52* TM-82* TM-92* TM-152A* TM-22B* *ASSE Standard 117 and SA listed 3/4 inlets, 1 outlet, 1-35 ( l/min) 3/4 inlets, 1 outlet, 1-5 ( l/min) 1 inlets, 1-1/4 outlet, 1-8 ( l/min) 1-1/4 inlets/outlet, 1-9 ( l/min) 1-1/4 inlets, 1-1/2 outlet, ( l/min) 2 inlets/outlet, ( l/min) FINISH F P ough Bronze hrome Plated MOUNTING O STSTL E STSTL EXP BWE E BWE EXP OPTIONS DT T Exposed Assembly Stainless Steel ecessed abinet Stainless Steel Exposed abinet Baked Enamel ecessed abinet Baked Enamel Exposed abinet Dial Thermometer (standard on abinet Models) Test onnection Piping on Outlet TM-22B 2

3 New Generation High Low Systems SAMPLE SPEIFIATION Leonard Model TM-, inlets, outlet minimum flow capacity (see chart, page 5) maximum flow PSI system pressure drop Large TYPE TM thermostatic water mixing valve, small TYPE TM valve, DUA-trol solid bimetal thermostat with Seven-Year Limited Warranty, color-coded dials, locking temperature regulator handles, adjustable limit stops set for 12 F (49 ), integral hot and cold supply checkstops Outlet ball valve shutoffs and optional color-coded dial thermometer, inlet piping manifold Factory-preassembled and tested, rough bronze finish System shall provide full-time standby service should one mixing valve require maintenance and shall be piped according to Leonard s required piping method For abinet Assembly Systems add: System shall be mounted in a recessed stainless steel cabinet with hinged door and lock (see cabinet options, page 2 in Selection/Specifications Guide). New Generation High Low Systems are not dependent upon a circulating pump for minimum flow performance New Generation Systems can be installed at any location in the domestic hot water system TM-42A TM-52 TM-82 TM-92 TM-152A TM-22B 1-35 ( l/min) 3/4 inlets, 1 outlet 1-5 ( l/min) 3/4 inlets, 1 outlet 1-8 ( l/min) 1 inlets, 1-1/4 outlet 1-9 ( l/min) 1-1/4 inlets/outlet ( l/min) 1-1/4 inlets, 1-1/2 outlet ( l/min) 2 inlets/outlet TM-42A TM-52-DT-STSTL E 3

4 O. ANSTON I USA F TYP TM US. Patents 2.97, 3,61, ,76 1 LEO NAD ASSE VAL VE THEMOSTATI US. Patent 77 & 3,61, ,76 O F PE TM AN 1 12 STON.I. U.S.A. LEO NAD ASSE 117 ASSE 117 VAL 4 2 VE O F THEMOSTATI TYPE TM ts 2.97,77 & 3,61, ,76 AN 1 12 STON.I. U.S.A. equired Piping Methods equired Piping Method #2 For systems recirculating up to 8 METHOD #2 NOTE: THIS PIPING METHOD IS USED FO MODEATE FLOW SYSTEMS WHEE THE IULATED FLOW IS EIGHT (8) O LESS. HIGH TEMPEATUE FIXTUES equired Piping Method #4 For systems recirculating 8 to 25 METHOD #4 NOTE: THIS PIPING METHOD IS USED FO MODEATE FLOW SYSTEMS WHEE THE IULATED FLOW IS EIGHT (8) TO TWENTY FIVE (25). HIGH TEMPEATUE FIXTUES TEMPEED FIXTUES TEMPEED FIXTUES THEMOMETE BALL FO SETUP (OPTIONAL) THEMOMETE BALL FO SETUP (OPTIONAL) HOT WATE SOUE HEAT TAP HEK TEMPEED IULATO ISOLATION T AQUASTAT HOT WATE SOUE HEAT TAP ETUN LINE WITH HEK (FULL ETUN LINE SIZE) TEMPEED IULATO HEK ISOLATION T AQUASTAT HEK HEK BALANING #2 WITH HEK OLD SUPPLY BALANING HIGH TEMPEATUE ETUN IULATO OLD SUPPLY HIGH TEMPEATUE ETUN BALANING #1 TEMPEED ETUN IULATO equired Piping Method #5 For systems recirculating over 25 METHOD #5 NOTE: THIS PIPING METHOD IS USED FO HIGH FLOW SYSTEMS WHEE THE IULATED FLOW IS TWENTY FIVE (25) O GEATE HIGH TEMPEATUE FIXTUES TEMPEED FIXTUES THEMOMETE BALL FO SETUP (OPTIONAL) ETUN LINE (FULL ETUN LINE SIZE) T HOT WATE SOUE HEAT TAP HEK TEMPEED IULATO ISOLATION AQUASTAT HEK BALANING #2 WITH HEK OLD SUPPLY BALANING #1 HIGH TEMPEATUE ETUN TEMPEED ETUN IULATO See page 6 for calculating the size of hot water bypass line. 4

5 Flow apacities MODEL TM-42A IN 3/4" 19mm MIN. SYSTEM PESSUE DOP (PSIG) OUT FLOW " mm PSI BA TM-52 TM-82 TM-92 3/4" 19mm 1" 25mm 1" 1 1/4" 25mm 32mm 1 1/4" 1 1/4" 32mm 32mm TM-152A 1 1/4" 1 1/2" mm 38mm " 2" TM-22B 51mm 51mm ASSE STANDAD 117 & SA LISTED Maximum Flow apacity Note: The New Generation model must be selected based upon the following: Maximum system demand for mixed water System pressure drop* Designer s estimated minimum mixed water flow requirement * System pressure drop = the pressure available at the inlet of the mixing valve minus the pressure required to operate the farthest fixture, i.e., shower valve, in the building Minimum Flow: TM-22B 1. TM-152A 1. TM TM TM TM-42A 1. PESSUE DOP, P.S.I.G. SYSTEM BA FLOW ATE, aution: All thermostatic water mixing valves have limitations. They will not provide the desired accuracy outside of their flow capacity range. onsult the above chart and graph and make certain minimum flow is greater than as shown above. 5

6 LEO 117 US. Patent 77 & 3,61, ,76 O. PE TM AN.I. Features, Options SUFFIX T BALL BALL NAD VAL VE THEMOSTATI TEMPEED WATE TO BUILDING STON U.S.A. FULL LINE SIZE FOM OUTLET SUFFIX T Test onnection Piping Eliminates the need to turn distant showers and sinks on and off throughout the building during setup. The required setup flows are established using the Test onnection Ball Valve (with hose connection) while the additional Ball Valve is in the closed position.this optional piping is furnished as part of the High Low System (Exposed Assemblies only). New Generation High Low Systems New Generation Systems are powered by Leonard s DUA-trol solid bimetal thermostats, highly responsive, not subject to puncture or fatigue, and not damaged when temporarily exposed to excessive temperatures. DUA-trol thermostats used in New Generation High Lows carry Leonard s exclusive Seven-Year Limited Warranty. Leonard s New Generation Systems provide simple, economical and dependable control of water temperature for and within domestic hot water systems when correctly sized, installed and maintained. Sizing the Hot Water ByPass Line For equired Piping Method #5 The following information is needed to size this line properly: 1. Flow of the recirculated water (Flow) 2. Temperature of the hot water (T hot) 3. eturn temperature (T return) 4. Outlet temperature of the mixing valve (T outlet) alculate the amount of hot water needed to restore the outlet recirculated water temperature to the original setting and select the line size needed to accomplish this using the formula below. Use the Type L table to determine the size. A properly sized Hot Water ByPass Line will prevent the possibility of the system reaching full hot water at any time. T outlet T return T hot T return X Flow = Gallons of Hot Water equired GPH hot Type L water req d line size 5 1/2 8 3/ / /2 Note: This chart is based upon flow at 5ft/sec max. Once a draw occurs (i.e., a faucet is opened) the pump deadheads and cold and hot water are introduced into the system. At this point recirculation is virtually nonexistent. This hot water bypass line will be needed when more than 8-1 of additional hot water is needed to maintain the recirculated water temperature. WANING! No two piping systems are alike! The Piping Methods detailed in this bulletin serve only as a guide to assist the specifier in the design of a hot water piping system. The specific characteristics of each installation must be considered by the design professional. Note: All specifications are subject to change without notice! 136 Elmwood Avenue ranston, I 291 USA t f info@leonardvalve.com LV-11B 9/9 Printed in the U.S.A. 6