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TM1520A LARGE VALVE PARTS

THERMOSTAT GROUP 

TM-16

TM-29/29A

POINTER SCREW

W/WASHER

COVER

SCREWS

SNAP CAP

57-L RF/CP

POINTER

TM-25C RF/CP

30

FRICTION
SPRING

STOP

TM-25D RF/CP

COVER RF/CP

POINTER ROD 

TM-28A

COIL SLEEVE

STUD

TM-8

H

C

O'RING  

MU-5A

THERMOSTATIC

LEONARD

TM-15B/125 (152) Serial No's

TGM-2/125 (152) Serial No's

ASSY

PORT SLEEVE NUT 

TM-3/125 (152) Serial No's

TGM-1/125 (152) Serial No's

PORT SLEEVE ASSY

FLANGE PACKING

TM21/125 (152) Serial No's

DIAL PLATE

TM-16A/125 (152) Serial No's

CHECKSTOP PARTS

LOCK-TYPE POINTER

SPRING

LOWER STEM & PACKING

010 RF/CP

TM-02 RF/CP

BONNET

STRAINER CAP

06 RF/CP

014

CAP PACKING

013

MU-5A

SCREEN

1529

UPPER STEM

03

05

PACKING

YELLOW

O'RING

SWIVEL

04/125 RF/CP (152) Serial #'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

013

SCREEN

TM-28A

POINTER ROD

05

BONNET PKG.

FLANGE PKG

1529

MU-5A

O'RING

013**

SCREEN

05**

BONNET PKG.

REPAIR KIT 1/125Y PACKINGS & GASKETS

REPAIR KIT R/125 TM-1520A REBUILDING KIT

REPAIR KIT 2/50Y CHECKSTOP KIT

**

TM21/125 (152) Serial No's

TM21/125 (152) Serial No's

FLANGE PKG

TM-3/125 (152) Serial No's

TGM-2/125 (152) Serial No's

THERMOSTAT GROUP 

PORT SLEEVE ASSY

TGM-1/125 (152) Serial No's

YELLOW

SPRING

YELLOW

**

POINTER SET SCREW

TM-36

REPAIR KITS

REMEMBER!

THIS IS A CONTROL DEVICE WHICH MUST BE 

CLEANED AND MAINTAINED ON A REGULAR BASIS. SEE 

MAINTENANCE GUIDE AND RECORD MGR-1001.

NOTE:

AFTER INSTALLING NEW PARTS IT WILL BE 

NECESSARY TO RESET THE ADJUSTABLE HIGH 

TEMPERATURE LIMIT STOP ON EACH VALVE (SEE PAGE 8).

10

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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