Install Instructions

ManualsBrandsLeonard ManualsHeating Supplies3/4" Sweat Eco-Mix Thermostatic Master Mixer (1 to 26 GPM)

TROUBLESHOOTING INSTRUCTIONS

See page 5 for Parts Breakdowns

PACKINGS &

GASKETS

1. Leak at pointer rod.

2. Leak between valve cover and base.

PARTS REQUIRED:

KIT#1/26 (PACKINGS & GASKETS)

PORT SLEEVE

ASSEMBLY

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

will not mix consistently.

KIT#R/28 (REBUILDING KIT)

OR TM-28-1-8B BRIDGE ASSEMBLY

THERMOSTAT

GROUP

4. After cleaning or replacing port sleeve

assembly, valve will not hold temperature.

KIT#R/28 (REBUILDING KIT)

OR TM28-G2 THERMOSTAT GROUP

CHECKSTOPS

5. Hot water bypass into cold line.

6. Supplies cannot be shut off completely.

7. Leak at checkstop bonnet.

KIT#4/M20 (CHECKSTOP KIT)

INSTRUCTIONS FOR DISMANTLING VALVE (DWG. 1)

1. Shut off hot and cold supplies to valve.

2. Remove four Cover Screws M20-2C to release entire

thermostatic control assembly.

WHEN RE-ASSEMBLING VALVE, insert Cover Gasket

M20-3C in base. Lubricate TM28-6B O'Rings before re-

inserting assembly.

After installing new parts, it will may be necessary to reset high

temperature limit. See instructions "TO RESET ADJUSTABLE

HIGH TEMPERATURE LIMIT STOP" (page 2).

TO REMOVE BRIDGE ASSEMBLY (DWG. 2)

Remove MU-10B Pointer Rod Nut, remove TM28-1-8B Bridge

Assembly from pointer rod.

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

condition in the TGM-1/28 Port Sleeve Assembly. The Thimble

should slide freely on the Port Sleeve.

Clean with a NON-CORROSIVE CLEANING AGENT AND

SOFT CLOTH. DO NOT USE ABRASIVES, then wash parts

thoroughly.

To reassemble, replace Bridge Assembly on pointer rod. Driving

ball on Thimble MUST engage hole in coil bracket. Replace

pointer rod nut.

DO NOT apply grease or lubricants to the TGM-1/28 Port

Sleeve Assembly.

TO DISASSEMBLE BRIDGE ASSEMBLY (DWG. 3)

Remove TM25-3A Holder Nuts using a screwdriver in the slots

provided. Clean or replace TGM-1/28 Port Sleeve Assembly

following instructions above. When reassembling, check TM-

25-3B port sleeve packings and replace if necessary.

TO CLEAN OR REPLACE THERMOSTAT GROUP

Loosen gland nut. Push rod through cover. BE CAREFUL NOT

TO PULL THERMOSTAT COIL OUT OF SHAPE.

To clean, if a deposit has collected on the thermostat group,

brush in a non-corrosive cleaning solution. Rinse in clean water

and replace in cover with parts as shown.