Hoffman 2" 21 Tempering Valve (140°F - 200°F) : User Guide : Page 3

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10

9

8

6

4

1

3

7

2

13

11

12

5

10

2. a. Make sure that the hot water supply temperature

to the tempering valve is at least 20°F (11°C)

hotter than the desired temperature of the mixed

water.

b. Operate system and allow temperature to

stabilize.

c. Loosen nut (10).

d. In one-half turn increments, turn adjustment screw:

- Clockwise to reduce temperature

- Counter clockwise to increase temperature

e. Allow the system to stabilize. When temperature

reaches desired level, tighten nut (10).

TROUBLESHOOTING & SERVICE

Number Part Repair Thermostat

Kit Kit

1Post Stat Assembly X X

2 Piston Spring X

3 Piston X

4Overheat Spring Assembly X X

5 Pushrod Assembly X X

6 Pushrod O-Ring X X

7 Body Gasket X X

8 Bonnet X

9 Adjustment Screw X

10 Nut X

11 Body O-Ring X X

12 Nameplate X

Parts Description

3

STEP 2 - Temperature Adjustment

INSTALLATION COMPLETE

•Turn off water before servicing tempering

valve.

•To prevent serious burns, wear heat resistant

gloves when opening and closing valves or

handling hot equipment.

Failure to follow this caution could cause

personal injury.

!

CAUTION