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TM-2020B LARGE VALVE PARTS

ASSY

PORT SLEEVE NUT 

TM-3/200

FLANGE PACKING

COVER

SCREWS

TM-21/125

POINTER SCREW

W/WASHER

TM-29/29A

PLATE

DIAL

TM-16A

TM-16

PORT SLEEVE

TGM-1/200

ASSY 

POINTER ROD 

FRICTION
SPRING

STOP

TM-25D

TM-15B/200

SNAP CAP

57-L

TM-25C

POINTER

COVER 

THERMOSTAT GROUP 

STUD

COIL SLEEVE

TM-8

TM-30

TM-28A

MU-5A

O'RING  

TGM-2/125

DIAL

TM-16

PLATE

THERMOSTATIC

C

H

LEONARD

CHECKSTOP PARTS

REPAIR KITS

CAP WASHER

UPPER STEM O'RING (4)

KIT R/200N * REBUILDING KIT

POINTER ROD

KIT 2/200Y * CHECKSTOP KIT

KIT 1/200Y * PACKINGS & GASKETS

THERMOSTAT

TGM-2/125

GROUP

SCREEN

4724 

TM-8

STEM O'RING (4)

LOWER STEM

& PACKING

COIL SLEEVE

4733 

2 EA:

STUD

SPRING

YELLOW

4742

TGM-1/200

PORT SLEEVE

313

ASSY.

4724

SCREEN

& PACKING

LOWER STEM

NUT ASSY.

PORT SLEEVE

**=2 EA.

4733

**

SPRING

POINTER ROD

MU-5A

O'RING

TM-3/200

**

TM-28A

313

FLANGE

TM-21/125

YELLOW

O'RING

4742

MU-5A

PKG.

CAP WASHER

4728

FLANGE

PKG.

TM-21/125

**

4728

**

LOWER STEM & 

PACKING/O'RING

SWIVEL NUT

4707

SWIVEL

4704

4724 

4733 

4728

CAP WASHER

313 

O'RINGS (2)

YELLOW

SPRING

4742

CAP

4723 

UPPER STEM

4727 

SET SCREW

TM-36

C

H

THE RMOS TA TIC

LEONARD

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).

7

Summary of Contents for TM-1520A-DT

Page 1: ...tem MUST be piped according to LEONARD S REQUIRED PIPING METHOD 5 see page 4 6 Refer to page 3 of this bulletin for correct Setup Instructions 1 Type TM Parallel Systems are factory pre assembled and...

Page 2: ...STOP SCREW located on the RIGHT SIDE OF THE COVER 5 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...

Page 3: ...STOP SCREW located on the RIGHT SIDE OF THE COVER 5 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...

Page 4: ...t V1L set outlet temperature of SVR mixing valve to the same temperature as STEP 7 14 Open all outlets System is operational To balance circulation system temperature see page 5 1 The Parallel Unit MU...

Page 5: ...G VALVE 1 APPROXIMATELY HALF WAY AND START CIRCULATOR KEEP BALANCE VALVE 2 CLOSED AT THIS TIME 2 OBSERVE TEMPERATURE UNTIL IT STABILIZES 3 CLOSE BALANCING VALVE 1 SLIGHTLY IF TEMPERATURE IS TOO HOT OR...

Page 6: ...will go then screw the port sleeve nut into the base The port sleeve and thimble may be lifted out SEE DWG BELOW 5 Clean in a non corrosive cleaning solution DO NOT USE ABRASIVES The port sleeve shoul...

Page 7: ...TM 8 STEM O RING 4 LOWER STEM PACKING COIL SLEEVE 4733 2 EA STUD SPRING YELLOW 4742 TGM 1 200 PORT SLEEVE 313 ASSY 4724 SCREEN PACKING LOWER STEM NUT ASSY PORT SLEEVE 2 EA 4733 SPRING POINTER ROD MU 5...

Page 8: ...CKING 013 MU 5A O RING SCREEN 4519 UPPER STEM 03 05 PACKING PKG 2 EACH KIT R 28 REBUILDING KIT KIT 2 28Y CHECKSTOP KIT 013 SCREEN CONTROL ASSEMBLY KIT 1 28Y PACKINGS GASKETS LOWER STEM O RING 2 EACH H...

Page 9: ...oil remove coil sleeve stud and take off thermostat group 6 Clean with a non corrosive cleaning solution DO NOT USE ABRASIVES 7 When reassembling make sure driving ball of thermostat group engages the...

Page 10: ...rial s 09 125 RF CP 152 Serial s 2 EA 03 LOWER STEM PACKING COIL SLEEVE TM 8 STUD 03 PACKING LOWER STEM 2 EA 014 CAP PACKING CAP PACKING SPRING 1529 014 O RING MU 5A O RING MU 5A NUT ASSY PORT SLEEVE...

Page 11: ...SLEEVE POINTER ROD NUT RETAINING RING POINTER SCREW W WASHER 57 M M20 3B M20 1B BRIDGE P S PACKING 2 REQ D 2 REQ D HOLDER NUT O RING M20 6B 2 REQ D M20 14B DRIVING BRIDGE ASSEMBLY M 20 1 8B POINTER ST...

Page 12: ...8 825 734 442 640 10 169 7 117 3 5 194 218 15 97 1 4 20 1120 977 1067 927 245 258 1 7 25 2 1 30 282 296 2 4 35 40 2 8 l min 1215 1283 321 339 3 1 45 3 4 50 GPM PSI BAR TM 2020A DT PARALLEL LIMITED WA...

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