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Leonard TM-2020A Installation Adjustment Service

High-low manifold
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INSTALLATION ADJUSTMENT SERVICE
IMPORTANT! Provide serial numbers for both valves when ordering parts!!
DOMESTIC OUTLET
HOT INLET
1. Type TM manifold systems are factory pre- assembled
and tested and include large and small thermostatic water
mixing valves which function as a system to meet both
high and low demand for tempered water.
2. System should be installed at a location where it can
easily be cleaned, adjusted or repaired.
3. System supplies must be connected as shown (Hot-left,
Cold-right). Exercise caution when soldering.
Maximum Operating Pressure 125PSI (860 KPA) for Hot and Cold Water.
All thermostatic water-mixing valves have limitations. They will not provide the desired
accuracy outside of their flow capacity range. Consult the capacity chart on page 8. Minimum
flow must be no less than as shown.
HIGH-LOW MANIFOLD
TM-2020A
ASSE 1017 LISTED
INSTALLATION
60
80
20
30
100
40
10
L EONARD
R
40
0
50
20
-10
60
120
°C
°F
0
140
LE ON ARD
THERMOSTATIC
C
H
1017
ASSE
COLD INLET
CAUTION
1360 Elmwood Avenue, Cranston, RI 02910 USA
Phone: 401.461.1200 Fax: 401.941.5310
Email:
info@leonardvalve.com
Web Site: http://www.leonardvalve.com
DOMESTIC OUTLET
HOT INLET
4. Flush pipes thoroughly after system has been
connected.
5. If this assembly is installed on a recirculated hot water
system it MUST be piped according to LEONARD'S
REQUIRED PIPING METHODS (see pages 4 & 5).
6. Refer to page 3 of this bulletin for correct Setup
Instructions.
Bulletin G10-E
January 2006
80
60
20
30
100
10
40
LEONARD
R
40
0
50
20
-10
60
120
°C
°F
0
140
LEONARD
THERMOSTATIC
H
C
ASSE
1017
COLD INLET

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Summary of Contents for Leonard TM-2020A

  • Page 1 5. If this assembly is installed on a recirculated hot water high and low demand for tempered water. system it MUST be piped according to LEONARD’S 2. System should be installed at a location where it can REQUIRED PIPING METHODS (see pages 4 & 5).
  • Page 2 Minimum flows must be no less than shown (see Flow Capacities, page 8). If installed on a recirculated hot water system, make certain the valve is piped according to Leonard’s Required Piping Methods (see page 4).

  • Page 3: Setup Instructions

    1. The High-Low Unit MUST be piped according to a 6. Set outlet temperature of the large Type TM Valve to the Leonard Required Piping Method (see page 4 & 5). required level. 2. Make sure full hot and cold supplies to this assembly are 7.
  • Page 4 REQUIRED PIPING METHOD #2 FOR SYSTEMS CIRCULATING 8 GPM OR LESS* (SEE PAGE 5, PIPING METHODS 4 AND 5 FOR HIGHER FLOW SYSTEMS) DOMESTIC TEMPERED WATER HIGH TEMPERATURE SUPPLY CIRCULATOR AQUASTAT OPTIONAL WATER SOURCE HEAT TRAP (OPTIONAL) ISOLATION VALVE #1 CHECK VALVE VALVE COLD SUPPLY...
  • Page 5 METHOD #4 CIRCULATED FLOWS BETWEEN 8-25 GPM DOMESTIC TEMPERED HIGH TEMPERATURE SUPPLY WATER FIXTURES THERMOMETER AQUASTAT CIRCULATOR (OPTIONAL) WATER SOURCE HEAT TRAP (OPTIONAL) BY-PASS (FULL LINE SIZE) VALVE #2 VALVE #1 COLD SUPPLY HIGH TEMPERATURE RETURN PROCEDURE TO BALANCE SYSTEM: 1.

  • Page 6: Troubleshooting Instructions

    INSTRUCTIONS FOR SERVICING INSTRUCTIONS FOR SERVICING LARGER TM VALVE SMALLER TM VALVE 1. Loosen LTR set screw 1. Loosen LTR set screw 2. Remove snap cap, screw and washer, friction spring and 2. Remove screw, snap cap, and handle. pointer. 3.

  • Page 7: Repair Kits

    LARGE TM VALVE PARTS CHECKSTOP PARTS REPAIR KITS LOCK-TYPE POINTER REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND MAINTAINED ON A REGULAR BASIS (SEE MAINTENANCE GUIDE AND RECORD) NOTE: AFTER INSTALLING NEW PARTS IT WILL BE NECESSARY TO RESET THE ADJUSTABLE HIGH TEMPERATURE LIMIT STOP ON EACH VALVE (SEE PAGE 2).
  • Page 8 SMALL TM VALVE PARTS CHECKSTOP PARTS REPAIR KITS LOCK-TYPE POINTER REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND MAINTAINED ON A REGULAR BASIS (SEE MAINTENANCE GUIDE AND RECORD) NOTE: AFTER INSTALLING NEW PARTS IT WILL BE NECESSARY TO RESET THE ADJUSTABLE HIGH TEMPERATURE LIMIT STOP ON EACH VALVE (SEE PAGE 2).

  • Page 9: Limited Warranty

    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.

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