Leonard Valve TA-300, TA-300-LF, TA-350, TA-350-LF Installation Manual

Bulletin G-5

EMERGENCY MIXING VALVE SYSTEM

,

,

REMEMBER! THIS IS A CONTROL SYSTEM WHICH MUST BE CLEANED AND MAINTAINED ON A

January 2015

INSTALLATION SETUP AND OPERAT ING INSTRUCTIONS

TA-300, TA-300-LF, TA-350, TA-350-LF

IMPORTANT! Provide valve serial number (located on valve body) when ordering parts!!

Compliance…………ANSI Z 358-1

TA-300, TA-300-LF TA-350, TA-350-LF

INSTALLATION

1. Valve should be installed at a location where it can
easily be cleaned, adjusted or repaired.

2. The inlets are clearly marked on the valve body
casting. Connect the hot water into the inlet marked
"HOT" and cold water into the inlet marked
"COLD."

NOTE: It may be necessary to recirculate the tempered water to the face/eyewash should the piping be exposed to

excessive hot or cold conditions. Consult factory for proper piping.

CAUTION

IMPORTANT! These systems are designed to provide mixed water from 60 to 90°F (15 to 32°C) for eye/face

wash applications only. Call Leonard for systems designed to operate at temperatures outside of this range.

REGULAR BASIS (SEE MAINTENANCE GUIDE AND RECORD MGR-1001).

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: [phone] Fax: [phone]

Email: [e-mail]

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

3. The checkstops furnished must be installed on both
supply lines as shown above.

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.

Maximum Operating Pressure 125PSI (860 KPA)

for Hot and Cold Water.

ADJUSTMENT AND SERVICE

valve

and

usage

(See

Maintenance

Guide

and

Record

MGR

stop

MUST

BE

RESET

BY

THE

r

t

g

t

g

Leonard Type TA Thermostatic Water Mixing Valves
are simple in design and may be easily cleaned,
adjusted and repaired. If the installation is accessible,
servicing may be completed without disconnecting the

.

TO RESET ADJUSTABLE HIGH TEMPERATURE LIMIT STOP:

1. Remove handle, retaining ring and loosen
set screw, and remove stop.

2. Turn emergency fixture on.

3. Replace handle on stem and turn stem
until desired maximum temperature is
reached.

4. Replace stop so it rests against the web
on the LEFT side of the cover.

5. Set operating temperature, tighten set
screw andresemble.

NOTE: Thermostatic Water Mixing Valves are
REGULATING mechanisms, which must be regularly
maintained to provide best performance. Frequency of
cleaning depends on quality of local water conditions

.

1000 and ANSI Z358.1).

WARNING

WARNING! This Thermostatic Mixing

Valve has an adjustable high temperature
limit stop which must be checked. If
temperature is too high, the installer MUST
RESET this stop immediately. Always check
the temperature of the mixed water when the
lever handle is turned to full HOT.
Excessively hot water is DANGEROUS

AND MAY CAUSE SCALDING!

The high temperature limit stop is factory set
at approximately 90°F (32°C) with an
incoming hot water supply temperature of
135°F (57°C). If the incoming hot water on
the job is higher than 135°F, the valve when
turned to full hot will deliver water in excess
of 90°F (32°C) and the high temperature limit

INSTALLER.

-

TROUBLESHOOTING INSTRUCTIONS

PARTS REQUIRED:

PACKINGS&

GASKETS

PORT SLEEVE

ASSEMBLY

THERMOSTAT

GROUP

CHECKSTOPS

SEE PAGE 5 FOR COMPLETE PARTS BREAKDOWN AND PARTS KITS

If installed on a circulated hot water system, make certain the valve is piped according to Leonard Required Methods

REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND MAINTAINED ON A REGULAR

Leak at pointer rod.
Leak between valve cover and base.

Valve outlet temperature cannot be adjusted or
will not mix consistently. .

After cleaning or replacing port sleeve assembly,
valve will not hold temperature.

Hot water bypass in cold line.
Supplies cannot be shut off completely.
Leak at checkstop bonnet.

MU-5A O’Ring (2 req.)
6806 Cove

TAG-1M Port Sleeve Assembly

Or

KIT# R/TA/M Rebuilding kit

6810 Thermostat Group

Or

KIT#R/TA/M Rebuildin

KIT# 4/LVC (TA-300)
KIT# B (TA-350)

of Piping (see page 3).

BASIS. (SEE MAINTENANCE GUIDE AND RECORD, MGR-1001).

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