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TM2020A SMALL VALVE PARTS

GLAND NUT

GLAND PACKING

(2 REQ'D)

STOP SCREW

TM-28-1-8B

BRIDGE ASSEMBLY

M20-3C

GASKET

COVER

03304

57-L

W/WASHER

TM-29/29A

POINTER SCREW

SNAP CAP

MU-9D

POINTER

MU-5D

STOP

RETAINING RING

MU-13D

TM-36

(2 REQ'D)

TGM-1/28

BRIDGE

(2 REQ'D)

HOLDER NUT O'RING

TM-28-6B

TM25-5

P.S. PACKING

(2 REQ'D)

PORT SLEEVE

TM25-3B

ASSEMBLY

POINTER ROD NUT

214

P.S. HOLDER NUT

MU-4C

TM-25-3A

DIAL PLATE

57-D RF

COVER

TM28-G2

THERMOSTAT GROUP

(2 REQ'D)

TM25-3

P.S. HOLDER

MU-10B

CHECKSTOP PARTS

REPAIR KITS

YELLOW

SPRING

LOWER STEM & PACKING

04

SWIVEL

09

SWIVEL NUT

010 RF

TM-02

BONNET

STRAINER CAP

06

014

CAP PACKING

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)

HOLDER NUT

LOWER STEM

& PACKING

YELLOW

SPRING

4519

CAP PACKING

014

BONNET PKG.

2 EACH:

03

M20-3C

GASKET

COVER

(2 EACH)

GLAND PKG.

05

(2 EACH)

MU-4C

STEM O'RING

MU-5A UPPER

YELLOW SPRING

CAP PACKING

(2 EACH)

014

(2 EACH)

4519

(2 EACH)

SCREEN

013

GASKET

M20-3C

COVER

05

BONNET PKG.

TM-28-1-12B

THERMOSTATIC

(2 EACH)

O'RING

MU-5A

03

TM-28-6B

LOCK-TYPE

POINTER

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 2).

8

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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