Leonard TM-200 Mode d’emploi

Bulletin G-2C

September 2008

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: 401.461.1200 Fax: 401.941.5310

Email: [email protected]

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

INSTALLATION ADJUSTMENT SERVICE

TM-200, (OLD STYLE)

TM-300, T-225, T-250, T-300)

IMPORTANT! Provide valve serial numbers (stamped on cover of valve) when ordering parts!

1. Valve should be installed 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”. These are not to be

confused with the “C-H” markings on the front cover.

3. Union angle checkstops furnished must be installed on both

supply lines as shown above.

4. A shutoff valve must be installed on the outlet pipe. Type

TM valves do not have a built-in shutoff.

5. 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.

6. Refer to page 3 of this bulletin for correct Setup Instructions.

INSTALLATION

Maximum Operating Pressure 125PSI (860 KPA) for Hot and Cold Water.

Required when hot water in the 140°F (60°C) range is to be circulated to a

master mixer or individual thermostatic mixing valves which are a

substantial distance from the hot water source. It is used primarily in a

building with several risers, with tempered water in each riser controlled

by a separate master mixer. NOTE: The engineer must determine

maximum distance which can be run, i.e. maximum allowable time for hot

water to reach user with one showerhead operating, based upon code

requirements and/or good practice.

Required when hot water in the 120°F (49°C) range is to be circulated thru

the entire building, to maintain tempered water at each fixture. The

function of the ½” by-pass is to allow the recirculated water to pass

through the mixing valve during periods of no draw without entering the

hot water source to avoid being reheated. The ball valve allows the system

to be properly balanced. The secondary by-pass loop helps reduce the

buildup of undesirable hot water in the primary system, and must not be

omitted. See TB-98 for set-up[ instructions.

WARNING! This piping will not perform effectively if the valve is oversized (see chart p4). Minimum flow must be no

less than as shown on page 4. For estimating hot water demand, consult Leonard Caspak® Plus Sizing Program.

ADJUSTMENT AND SERVICE

Leonard Type TM 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 valves.

NOTE: Thermostatic Water Mixing Valves, which must be

regularly maintained to provide best performance.

Frequency of cleaning depends on quality of local water

conditions and usage. See Maintenance Guide and Record

MGR-1000.

!!! WARNING !!!

These mixing valves are equipped with an adjustable high temperature limit stop factory set at approximately

130°F (54°C) with an incoming hot water supply temperature of 155°F (68°C). If the hot water supply

temperature of the job is greater than 155°F (68°C), the valves when turned to full HOT will deliver water in

excess of 130°F (49°C) and the limit stops MUST BE RESET BY THE INSTALLER!

TROUBLESHOOTING INSTRUCTIONS

While valve is running:

1. Remove POINTER ROD NUT AND POINTER

2. Temporarily place POINTER on the spline rod. turn RIGHT for warmer temperature,

turn LEFT for cooler temperature. When valve is delivering warmest temperature

desired, remove the pointer.

3. Replace POINTER on the spline rod so that its RIGHT edge is resting against the TOP

SIDE OF THE web which is cast on the RIGHT side of cover.

4. The new maximum temperature has now been set. Test this temperature by holding a

thermometer under the flow of water to be certain it is as desired.

SEE PAGES: 3 FOR COMPLETE PARTS BREAKDOWN

*Check for significant variations in outlet flow. Thermostatic valves will NOT provide the desired accuracy outside of

their flow capacity range. Minimum flows must be no less than shown (see Flow Capacities, page 4).

If installed on a recirculated hot water system, make certain the valve is piped according to Leonard Required Piping (see

page 1). 2

PACKINGS &

GASKETS

PORT SLEEVE

ASSEMBLY

THERMOSTAT GROUP

CHECKSTOPS

(TM-200,225 ONLY)

1. Leak at packing nut.

2. Leak between valve cover and base.

3. Valve delivers either all hot or all cold water,

or will not mix consistently.

4. After cleaning or replacing port sleeve

assembly, valve will not hold temperature.

5. Hot water by-pass into cold line.

6. Supplies cannot be shut-off completely.

7. Leak at checkstop bonnet.

PARTS REQUIRED

#24, 21/200, (TM-200) or 24, 21/300 (TM-

300)

#3/3A, TG-1 plus packings noted above or

Kit R/200 (TM-200) R/300 (TM-300)

TG-2/60 or Kit R/200 (TM-200)

TG-2/300 or Kit R/300 (TM-300)

Kit 2/200

TO RESET ADJUSTABLE HIGH TEMPERATURE LIMIT STOP:

INSTRUCTIONS FOR DISMANTLING

1. Shut off hot and cold supplies to valve.

2. Remove the 8 Cover Screws, then take off cover to which the

thermostat and gears are attached.

TO CLEAN PORT SLEEVE ASSEMBLY

Failure to properly blend the water may be caused by a sticking

condition in the Port Sleeve assembly. The Thimble should slide

freely on the Port Sleeve (see DWG 2).

1. If a deposit of lime or sediment prevents free movement, use a nail

set or other tapered tool to unscrew the Check Nut as far as it will go,

then screw the Port Sleeve Nut into the base. This will release the

Port Sleeve and Thimble so they can be lifted out (see DWG2).

2. Clean with A NON-CORROSIVE CLEANING AGENT AND

SOFT CLOTH-DO NOT USE ABRASIVES- then wash parts

thoroughly wipe with dry cloth and re-assemble. The Port Sleeve

should be assembled with the shoulder to the left. Tighten Port Sleeve

Nut against end of Port Sleeve but be careful not to crimp sleeve in

place. Tighten Check Nut.

3. When replacing front be sure the flange packing is in place and the

Thermostat Group’s DRIVING BALL is inserted in Ball Socket as

shown in DWG 1.

TO REPLACE POINTER ROD WITH GEAR

1. Remove Cover with parts attached from front of valve.

2. Remove Pointer Rod Nut and Pointer.

3. Remove Coil Sleeve Stud (8) and take off Thermostat Group (TG-2).

4. Replace Pointer Rod with Gear and re-assemble.

TO REPLACE (OR CLEAN)

THEMOSTAT GROUP

Follow instructions for replacing Pointer Rod with

Gear. If a deposit has collected on the Thermostat

Group, clean it off with a brush in a non-corrosive

grit free cleaning solution.

WHEN RE-ASSEMBLING

VALVE, insert new Flange Packing

(21) in place; replace Cover,

tightening Cover Screws in rotation;

put Friction Spring (30) in place;

then replace Pointer and Pointer Rod

Nut.

NOTE: After installing new parts, it

will be necessary to reset Pointer to

obtain correct temperature range

from Cold to Hot. See instructions on

Page 2:

“TO RESET ADJUSTABLE

HIGH TEMPERATURE LIMIT

STOP”

Note: Parts noted for TM-200 apply to TM-225B Parts

noted for TM-300 apply to T-225, T-250, T-300

FLOW CAPACITIES

CAUTION! ALL THERMOSTATIC WATER MIXING

VALVES AND SYSTEMS HAVE LIMITATIONS! THEY

WILL NOT PROVIDE THE DESIRED PERFORMANCE

OUTSIDE OF THEIR FLOW CAPACITY RANGE!

CONSULT THE CAPACITY CHART AND OBSERVE

MINIMUM FLOWS SHOWN.

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: 401.461.1200 Fax: 401.941.5310

Email: [email protected]

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

Leonard Type TM-200 and TM-300 Thermostatic Mixing

Valves are designed primarily for industrial and large

commercial applications. When considering these products,

exercise caution and observe the minimum flow requirements

shown below.

TM-200 MINIMUM FLOW – 30 GPM (114 l/min.)

TM-300 MINIMUM FLOW – 45 GPM (170 l/min.)

NOTE: Do not use valve where system flow is either less or greater than the limits shown. For

estimating hot water demand, consult Leonard Caspak® Plus Sizing Program.

LIMITED WARRANTY

Leonard Valve Company (hereinafter, “Leonard”) warrants the original purchaser that products manufactured by Leonard will be free from

defects in material or workmanship under normal conditions of use, when properly installed and maintained in accordance with Leonard’s

instructions, for a period of one year from the date of shipment. During this period, Leonard 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. Leonard provides no warranty, express or implied, which extends beyond the description contained herein. LEONARD

SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A

PARTICULAR PURPOSE. Nonetheless, some jurisdictions may not allow the disclaimer of certain implied warranties, in which case Leonard

hereby limits such implied warranties to the duration of the limited warranty period contained herein. Some jurisdictions may not allow

limitations on how long an implied warranty lasts, so the foregoing durational limitation may not apply to you. In no event will Leonard be liable

for labor or incidental or consequential damages. Any alteration or improper installation or use of this product will void this limited warranty. If

any provision of this limited warranty is prohibited by law in the applicable jurisdiction, such provision shall be null and void, but the remainder

of this limited warranty shall continue in full force and effect.

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