Leonard MEGATRON 8N Installation Adjustment Service Download Page 1

Bulletin M-5090Z 

August, 2018

1360 Elmwood Avenue, Cranston, RI 02910 USA

Phone: 401.461.1200 Fax: 401.941.5310

Email: 

[email protected]

Web Site: http://www.leonardvalve.com

INSTALLATION ADJUSTMENT SERVICE

MEGATRON MODEL 8N, 8N-LF, 8NB-LF

Note: IMPORTANT! Provide serial numbers for both valves when ordering parts!!

INSTALLATION

1. Type TM Parallel 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.

4. Flush pipes thoroughly after system has been connected.

5. Assemblies installed on a recirculated hot water system

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.

Maximum Operating Pressure 125PSI (860 KPA) for Hot and Cold Water.

CAUTION

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 12. Minimum
flow must be no less than as shown.

LEONARD

THERMOSTATIC

C

H

10

-10

20

0

40

14

0

°F

0

60

°C

50

L EONARD

20

4 0

3 0

1

20

10

0

60

80

kg/ cm 2

11

psi

4

6

8 0

1

4

0

16

0

1

2

0

1 0

8

1

0 0

4

0

2

0

2

6

0

H

50

60

80

40

20

10

0

30

20

0

°F

14

0

LEONARD

60

°C

0

- 10

10

1

2

0

40

50

60

80

40

20

1

00

30

20

0

°F

14

0

LEONARD

60

°C

0

-10

10

1

20

4 0

50

60

80

40

20

1

00

30

20

0

°F

14

0

LEONARD

60

°C

0

-10

10

1

20

40

10

-10

20

0

40

14

0

°F

0

60

°C

50

LEONARD

20

40

30

1

2

0

10

0

60

80

LEONARD

THERMOSTATIC

C

WARNING:

This

product

can

expose

you

to

chemicals including lead, which is known to the State
of California to cause cancer. For more information, go
to

www.P65Warnings.Ca.gov

!

Summary of Contents for MEGATRON 8N

Page 1: ...system 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 Maximum Operating Pressure 125PSI 860 KPA for Hot and...

Page 2: ...less than shown see Flow Capacities page 12 If installed on a recirculated hot water system make certain the valve is piped according to Leonard s Required Piping Methods see page 4 REMEMBER THIS IS...

Page 3: ...lve V2R and shut ball valve V2L at the mixing valve 9 Set outlet temperature of the mixing valve LVR to the same temperature as step 7 10 Turn off enough fixtures for a flow of at least 2 GPM 7 6 l mi...

Page 4: ...8 3 8 ETC UNTIL DESIRED TEMPERATURE IS ACHIEVED REMEMBER THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND MAINTAINED ON A REGULAR BASIS SEE MAINTENANCE GUIDE AND RECORD MGR 1000 4 SYSTEM FIXTURES HO...

Page 5: ...on corrosive cleaning solution DO NOT USE ABRASIVES Be certain thimble moves freely on port sleeve Note Driving ball on thimble must engage coil bracket in assembling 6 To disassemble bridge assembly...

Page 6: ...OINTER 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 POR...

Page 7: ...NANCE 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 CHECKSTOP PARTS REPAIR KITS MU 4A RF MU 5A UPPE...

Page 8: ...ll be free from defects in material or workmanship under normal conditions of use when properly installed and maintained in accordance with Leonard s instructions for a period of one year from the dat...

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