Leonard 170-LF Guide

Bulletin G-522
February 2013
INSTALLATION,ADJUSTMENT, SERVICE
MODEL170, 170-LF, 270, 270-USW, 270-LF, 370, 370-LF, 470
THERMOSTATIC / POINT OF USE MIXING VALVES
270 (1/2”NPT)
270-LF (1/2”NPT)
ASSE1017/ASSE 1070
170 (3/8”COMP)
170-LF (3/8”COMP)
ASSE 1070
370 (3/4”NPT)
370-LF (3/4”NPT)
ASSE1017/ASSE 1070
170 WARNING:
DO NOT USE THREAD
SEALANT ON MODEL 170
470 (1”NPT)
( PICTURE NOT SHOWN )
ASSE 1017
ASS 10 0
270-USW (1/2”)
( PICTURE NOT SHOWN )
ASSE 1017
COMPRESSION CONNECTIONS
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.
ASS
E
10
7
0
ASSE 1070
WARNING!!
1. Valve should be installed where it can be easily cleaned,
adjusted or repaired.
2. Inlets are furnished with NPT connections. When
soldering close to this unit, DO NOT OVERHEAT,
internal components may become damaged.
3. Leonard recommends that unions and shutoffs are
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.
WARNING!!
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
p
erature settin
g
to ensure deliver
y
ofasafewate
r
tem
p
erature no
t
exceedin
g
110°F
(
43°C
)
.See
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
Web Site: http://www.leonardvalve.com
p
g
y
p
g
(
)
“Temperature Adjustment” next page.

ADJUSTMENTAND SERVICE
TEMPERATURE ADJUSTMENT WARNING
WARNING! This thermostatic mixing valve’s
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
mixed
water
outlet
temperature
by
placing
a
thermometer
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:

Maximum
Pressure
:
125
PSI
(
8
6
BAR)
mixed
water
outlet
temperature
by
placing
a
thermometer
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.)
4. Tighten knob set screw to lock temperature setting.

Maximum
Pressure
:
125
PSI
(
8
.
6
BAR)
Maximum Hot Water temperature: 200F- (93°C)
Approach Temperature 5°F (2.8°C) above set
point.
TROUBLESHOOTING INSTRUCTIONS
GASKET KIT Leaking water under knob.
Leaking water between valve cover and
body.
GASKET KIT
ALL Models 1/WX
REBUILDING KIT Valve will not control temperature after
cleaning. REBUILDING KIT Model 170, 170-LF R/170
Model 270, 270-LF,
270
USW
370
370
LF
470
R/
270
/
370
270
-
USW
,
370
,
370
-
LF
470
R/
270
/
370
CHECKSTOP KIT Hot water by-pass into cold line.
Cold water by-pass into hot line. 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
SEE PAGE 3 FOR COMPLETE PARTS BREAKDOWN
SEE
PAGE
3
FOR
COMPLETE
PARTS
BREAKDOWN
SEE PAGE 4 FOR PIPING IN RECIRCULATED OR NON-RECIRCULATED WATER SYSTEMS
8.76.40.95
270 1/2" 1/2"
21
095
13
3.50.25 5.5
170
MODEL
MINIMUM
3/8" 3/8"
IN OUT .7
.3
1.70.25
L\MIN
2.3
FLOW *
(GPM) 510
1918151210 L\MIN 171411.4
11.5
36
9.5
32
25
28
6.5 7.5 8.5
40
38
43
10.510
45
L\MIN
12 GPM
3.6
30
2.1
PRESSURE DROP
1.71.0 1.4
2.7 3.0 3.2
15 20 25
2.82.4 3.1
4.0 4.4 4.7
35 40 45
3.4 BAR
5.0 GPM
50 PSI
270-LF
270
-
USW
170-LF
* Minimum flow certified to ASSE 1070
370 3/4" 3/4"
21
0
.
95
13
0.5
1.9
64
15 23
12.5
36
38
10
32
25
28
87
27 30
9
34
40
38
43
11.510.5
40 43 47
45
L\MIN
L\MIN
49
13 GPM
470 1" 1" 0.5
1.9
64
15 23
12.5
38
1087
27 30
9
34
11.510.5
40 43 47 L\MIN
49
13 GPM
270 USW
370-LF
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: [email protected]
WEB: http://www.leonardvalve.com 2

VALVE PARTS LIST
CHECK
CHECK CLIP (MODEL 270/270-LF/370/ 370-LF/470 ONLY)
SHUTTLE ASSEMBLY
STEM ASSEMBLY
STEM ASSEMBLY O'RING COVER O'RING
RETAINING CLIP
KNOB
170 - BP ONLY
RETURN SPRING
SHUTTLE
ASSEMBLY
SCREW
DIAL PLATE
DO NOT REMOVE
SNAP RING ON
STEM - INJURY MAY
OCCUR PACKING
PART # 7539
MODEL170, 170-LF, 270, 270-LF, 270-USW, 370, 370-LF, 470
MODEL 170, 170-LF
1/ WX
Gasket Kit
MODEL 270, 270-LF
1/ WX
Gasket Kit
MODEL 270-USW
1/ WX
Gasket Kit
MODEL 370, 370-LF, 470
1/ WX
Gasket Kit
SHUTTLE O'RING
COVER
KNOB SET SCREW
1/
WX
Gasket
Kit
Shuttle o’ring
Stem assembly o’ring
Cover o’ring
R/ 170 Rebuild Kit
Return spring
Shuttle assembly
Shuttle o’ring
Stem assembly o’ring
1/
WX
Gasket
Kit
Shuttle o’ring
Stem assembly o’ring
Cover o’ring
R/ 270/370 Rebuild Kit
Return spring
Shuttle assembly
Shuttle o’ring
Stem assembly o’ring
1/
WX
Gasket
Kit
Shuttle o’ring
Stem assembly o’ring
Cover o’ring
R/ 270/370 Rebuild Kit
Return spring
Shuttle assembly
Shuttle o’ring
Stem assembly o’ring
1/
WX
Gasket
Kit
Shuttle o’ring
Stem assembly o’ring
Cover o’ring
R/ 270/370 Rebuild Kit
Return spring
Shuttle assembly
Shuttle o’ring
Stem assembly o’ring
DISMANTLING & CLEANING TROUBLESHOOTING
1
ki
d
kb
d
k
ki
l
bl
Stem
assembly
o’ring
Cover o’ring
4/108 Check valve Kit
2 Check valves
Stem
assembly
o’ring
Cover o’ring
4/220 Check valve Kit
2 Check valves
2 Check clips
Stem
assembly
o’ring
Cover o’ring
4/220USW Check valve Kit
2 Check valves
3 Union gaskets
Stem
assembly
o’ring
Cover o’ring
4/320 Check valve Kit
2 Check valves
2 Check clips
1. Shut off hot and cold water to the valve as well as the valve outlet
port.
2. Loosen lock screw on side of knob with 5/64” allen wrench.
3. Remove the knob screw on top of knob.
4. Remove temperature adjustment knob.
5. Remove valve cover, which includes the stem assembly.
6. The shuttle assembly can now be removed, cleaned and inspected. Be
sure to check the condition of the shuttle o-ring and replace if
necessary.
1
.Lea
ki
ng wate
r
un
d
e
r
k
no
b
,or
d
e
r
gas
k
e
t
ki
t, rep
l
ace ste
m
assem
bl
yo-
ring. Remove knob screw and knob, remove retaining clip, thread out
the stem assembly and replace o-ring. Lubricate o-ring, thread stem
into cover, replace retaining ring, knob and screw. Valve temperature
must be reset after any repairs or cleaning!! See page 2.
2. Leaking water between cover and body, order gasket kit,
replace cover o-ring. Remove knob screw and knob and remove valve
cover and replace o-ring. Replace valve cover, knob and knob screw.
Valve temperature must be reset after any repairs or cleaning!! See
page
2
7. Lubricate the shuttle o-ring before installing the shuttle assembly.
8. Install the cover assembly including o-ring back onto valve and
tighten.
9. Replace knob and knob screw.
10. Valve temperature must be reset after any repairs or cleaning!!
See Page 2. Temperature Adjustment
page
2
.
3. Hot water bypass into cold line, order checkstop kit and replace checks
within inlets of valve.
4. Valve not controlling temperature even after cleaning, order complete
rebuild kit. Remove knob screw and knob and remove valve cover.
Replace shuttle assembly and return spring being sure to lubricate
shuttle o-ring. Replace valve cover, knob and knob screw. Valve
temperature must be reset after any repairs or cleaning!! See page
2.
5. Lea
k
b
etween valve
b
y-pass fitting to the inle
t
of
b
ase. Chec
k
#265
packing, is installed or not split.
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
WEB: http://www.leonardvalve.com 3

INSTALLATION WITHOUT
CIRCULATED TEMPERED WATER
PIPING METHOD #1
HOTWATER
SUPPLY
MASTER
MIXING VALVE
(OPTIONAL)
TEMPEREDWATER
TO FIXTURES
COLD
COLD
HOT
THERMOMETER
ISOLATION
HOT WATER
COLD WATER
SUPPLY
BALL VALVE
1. Model 270, 270-LF, 270-USW, 370, 370-LF and 470 Thermostatic Mixing Valves must be installed
according to Piping Diagram W if recirculation of tempered water is required.
2
The 170 170
-
LF 270 270
-
LF 270
-
USW 370 370
-
LF and 470 Thermostatic Mixing Valve should be
HOT
WATER
(TO KITCHEN OR LAUNDRY)
HIGH TEMPERATURE HOT
IF REQUIRED
BALL
VALVE
2
.
The
170
,
170
LF
,
270
,
270
LF
,
270
USW
,
370
,
370
LF
and
470
Thermostatic
Mixing
Valve
should
be
installed below the hot water tank. If the valve cannot be located is this area, the hot water inlet piping
to the mixing valve should be installed with a heat trap.
INSTALLATION WITH CIRCULATED TEMPERED WATER
PIPING METHOD W
THERMOMETER
HOT WATER
SUPPLY
SUPPLY
COLD WATER
ISOLATION
HOT
COLD
TO FIXTURES
TEMPERED WATER
COLD
THERMOMETER
CIRCULATOR
ISOLATION
BALL VALVE
LIMITED WARRANTY
SUPPLY
HOT WATER
(TO KITCHEN OR LAUNDRY)
CHECK VALVE
IF REQUIRED
HIGH TEMPERATURE HOT
BALL VALVES
ISOLATION
CHECK VALVE
Leonard Valve Company warrants the original purchaser that products manufactured by them (not by others) will be free
from defects in materials and workmanship under normal conditions of use, when properly installed and maintained in
accordance with Leonard Valve Company's instructions, for a period of one year from date of shipment. During this period
the Leonard Valve Company will at its option repair or replace any product, or part thereof, which shall be returned, freight
prepaid, to the Leonard factory and determined by Leonard to be defective in materials or workmanship. There are no
warranties, express or implied, which extend beyond the description contained herein. There are no implied warranties of
merchantability or of fitness for a particular purpose. In no event will Leonard be liable for labor or incidental or
consequential damages. Any alteration or improper installation or use of the product will void this limited warranty.
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: [phone] Fax: [phone]
Email: [email protected]
WEB: http://www.leonardvalve.com 4
© 2013 Leonard Valve Company
Printed in USA