Leonard Valve 170, 170-LF, 270, 270-USW, 270-LF Installation Manual

Bulletin G-522

ASSE 1070

WARNING!!

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February 2013

INST ALLA TION, ADJUSTMENT , SERVICE

MODEL 170, 170-LF, 270, 270-USW, 270-LF, 370, 370-LF, 470

THERMOSTATIC / POINT OF USE MIXING VALVES

170 (3/8”COMP)
170-LF (3/8”COMP)

ASSE 1070

170 WARNING:

DO NOT USE THREAD

SEALANT ON MODEL 170

COMPRESSION CONNECTIONS

270 (1/2”NPT)
270-LF (1/2”NPT)

ASSE1017/ASSE 1070

270-USW (1/2”)

( PICTURE NOT SHOWN )

ASSE 1017
ASSE 1070

370 (3/4”NPT)
370-LF (3/4”NPT)

ASSE1017/ASSE 1070

470 (1”NPT)

( PICTURE NOT SHOWN )

ASSE 1017

270 / 270-LF / 370 / 370-LF / 470 WARNING:

When using flex hoses be careful, swivel connectors may damage inlet checks and / or element

on outlet on 270, 270-LF, 370, 370-LF and 470 models. Coupling fittings may be needed if

swivel connectors have a brass protruding tube or any protrusion that may damage the valve.

1. Valve should be installed where it can be easily cleaned,

2. Inlets are furnished with NPT connections. When

3. Leonard recommends that unions and shutoffs are

adjusted or repaired.

soldering close to this unit, DO NOT OVERHEAT,
internal components may become damaged.

WATER TEMPERATURES IN EXCESS OF 110°F (43°C) MAY CAUSE SCALDING, SEVERE

INJURY, OR DEATH!!

Maximum Operating Pressure: 125 PSI (860 KPA)

IMPORTANT! These thermostatic water mixing valves can be adjusted to deliver water at temperatures
exceeding 110°F (43°C). After installation, the installer must check the outlet water temperature and adjust
the tem

“Temperature Adjustment” next page.

erature settingto ensure deliveryofasafewatertemperature notexceeding110°F(43°C).See

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: [phone] Fax: [phone]

Email: [e-mail]

Web Site: http://www.leonardvalve.com

installed on the inlets and outlet.

4. Use solder or pipe cement sparingly. Supply pipes should
be flushed before the valve is connected. Flush outlet
pipe and valve as soon as it is connected.

ADJUSTMENT AND SERVICE

mixed

water

outlet

temperature

by

placing

a

thermometer



Maximum

Pressure

:

125

PSI(8.6

BAR)

270-USW

370,370-LF

470R/270/370

SEE PAGE 3 FOR COMPLETE PARTS BREAKDOWN

21

0.95

13

36

322528

403843

45

L\MIN

270 USW

TEMPERA TURE ADJUSTMENT

1. Open hot and cold water supply valves to mixing valve.

2. Open mixed water outlet.

3. With the fixture in the full open position, calibrate the

WARNING

WARNING! This thermostatic mixing valve’s

temperature setting MUST be checked. If the
temperature is too high (above 110ºF, 43ºC), the
temperature knob must be adjusted immediately.
Excessively hot water is DANGEROUS AND MAY

CAUSE SCALDING!!

PRESSURE-TEMPERATURE:

in the mixed water stream. Loosen knob set screw with
5/64” allen wrench. Adjust the setting of the valve to
obtain the desired temperature (counterclockwise, to
increase temperature-clockwise to decrease temperature.)

 Maximum Hot Water temperature: 200F- (93°C)
 Approach Temperature 5°F (2.8°C) above set

point.

4. Tighten knob set screw to lock temperature setting.

TROUBLESHOOTING INSTRUCTIONS

GASKET KIT Leaking water under knob.

Leaking water between valve cover and
body.

REBUILDING KIT Valve will not control temperature after

cleaning.

CHECKSTOP KIT Hot water by-pass into cold line.

Cold water by-pass into hot line.

SEE PAGE 4 FOR PIPING IN RECIRCULATED OR NON-RECIRCULATED WATER SYSTEMS

MODEL

170

170-LF

270

270-LF

-

370

370-LF

470

IN OUT

3/8" 3/8"

1/2" 1/2"

3/4" 3/4"

1" 1"

MINIMUM

FLOW *

5

(GPM)

L\MIN

.3

1.70.25

3.50.25 5.5

0.5

1.96415 23

0.5

1.96415 23

10

.7

2.3

8.76.40.95

PRESSURE DROP

15 20 25

2.7 3.0 3.2

6.5 7.5 8.5

87

27 30934

27 30934

GASKET KIT
ALL Models 1/WX

REBUILDING KIT
Model 170, 170-LF R/170
Model 270, 270-LF,

,

CHECK KIT
Model 170, 170-LF 4/108
Model 270, 270-LF 4/220
Model 270-USW 4/220USW
Model 370, 370-LF, 470 4/320

1.71.0 1.4

30

35 40 45

2.1

3.6

4.0 4.4 4.7

9.5

10

40 43 47

38
1087

38

40 43 47

2.82.4 3.1

171411.4

10.510

11.5

12.5

11.510.5

12.5

11.510.5

PSI

50

BAR

3.4
GPM

5.0
L\MIN

1918151210

GPM

12

GPM

13
49

L\MIN

GPM

13
49

L\MIN

* Minimum flow certified to ASSE 1070

IMPORTANT!! THIS IS A CONTROL SYSTEM WHICH MUST BE CLEANED AND MAINTAINED ON A
REGULAR BASIS (SEE MAINTENANCE GUIDE AND RECORD MGR-1001).

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: [phone] Fax: [phone]

Email: [e-mail]

WEB: http://www.leonardvalve.com 2