ADJUSTMENT AND SERVICE
TEMPERATURE 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
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.
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:
Minimum Flow:0.5 GPM (1.9 l/Min)
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
Model 270
1/WX
Model 370
1/WX
REBUILDING KIT
Valve will not control temperature after
cleaning.
REBUILDING KIT
Model 270
R/270/370
Model 370
R/270/370
CHECKSTOP KIT
Hot water by-pass into cold line.
Cold water by-pass into hot line.
CHECK KIT
Model 270
4/220
Model 370
4/320
SEE PAGE 3 FOR COMPLETE PARTS BREAKDOWN
SEE PAGE 4 FOR PIPING IN RECIRCULATED OR NON-RECIRCULATED WATER SYSTEMS
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: 401.461.1200 Fax: 401.941.5310
Email:
WEB: http://www.leonardvalve.com
2
27
30
9
34
6.5
7.5
8.5
40
38
43
11.5
10.5
40
43
47
10.5
10
45
L\MIN
L\MIN
49
13
GPM
12
GPM
30
2.1
PRESSURE DROP
1.7
1.0
1.4
15
20
25
2.8
2.4
3.1
35
40
45
3.4
BAR
50
PSI
370
270
3/4"
3/4"
1/2"
1/2"
21
0.95
13
0.5
1.9
6
4
15
23
3.5
0.25
5.5
MODEL
MINIMUM
IN
OUT
.7
.3
L\MIN
FLOW
(GPM)
5
10
11.5
12.5
36
9.5
38
10
32
25
28
8
7
