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K

To prevent serious personal injury from steam pipe blow
down, connect a drain pipe to the control opening to
avoid exposure to steam  discharge.

Failure to follow this caution could cause personal injury.

!

CAUTION

INSTALLATION COMPLETE

10

Snap Switch Models

STEP 4 - Testing

OFF

ON

a.

Turn on the electric power to the boiler.The pump should go on
and the burner must remain off.

IMPORTANT:

Follow the boiler manufacturer’s start-up and operating instructions along with all applica-

ble codes and ordinances.

This control is factory calibrated for specific level
settings as shown on pages 2-4 in the “Operation”
section.

The following testing procedure is only meant to
serve as a verification of proper operating
sequence.

If the burner comes on, immediately turn the boiler off and make the
necessary corrections.

Failure to follow this warning could cause an explosion or fire and
result in property damage, personal injury or death.

!

WARNING

b.

The boiler should begin to fill with water.
As the water level rises in the sight glass,
the burner should turn on and then the
pump should turn off at appropriate levels.
For manual reset models, press the reset
button (K) when the water reaches appro-
priate level.
If the burner does not turn on or pump 
turn off at appropriate levels, immediately
turn off the boiler and make necessary 
corrections.

Location of Manual Reset Button

c.

Blow down the control when the water in the boiler is at 
its normal level and the burner is on. Follow Blow Down
Procedure found in Maintenance Section on page 11 of
these instructions.

Содержание 150S-HD

Страница 1: ...off must be installed in series with all other limit and operating controls installed on the boiler After installation check for proper operation of all of the limit and operating controls before leav...

Страница 2: ...FFERENTIAL 19mm PUMP OFF PUMP ON 3 4 DIFFERENTIAL 19mm PUMP OFF BURNER OFF NORMAL BOILER WATER LINE 113 16 DIFFERENTIAL 46mm OPERATION Maximum Pressure 150 psi 10 5 kg cm2 Electrical Ratings Settings...

Страница 3: ...ening or closing will occur at slightly different levels than indicated above Model 158S 150 psi 10 5 kg cm2 Levels 0 psi 0 kg cm2 150 psi 10 5 kg cm2 Pressure Settings and Differential Pressures cont...

Страница 4: ...8 DIFFERENTIAL 35mm Values are 8 3 2mm 150 psi 10 5 kg cm2 Levels Approximate Distance Above Cast Line Differential Setting In mm In mm Pump 1 Off 15 16 24 5 16 8 Pump 1 On 5 8 16 Pump 2 Off 5 8 16 3...

Страница 5: ...boiler to a level which is below the float chamber A Allow the boiler to cool to 80 F 27 C and release the boiler pressure to 0 psi 0 bar b Using a flathead screwdriver remove the junction box cover B...

Страница 6: ...ew head gasket J on the sealing surface of the control body a Carefully remove the new replacement head mechanism from the carton Handle it carefully to prevent damage to the float rod G K D c Install...

Страница 7: ...lay is used in conjunction with it To prevent electrical shock turn off the electrical power before making electrical connections This low water cut off must be installed in series with all other limi...

Страница 8: ...larm off Boiler feed pump on burner off alarm on 1 2 4 5 6 1 2 4 5 6 1 2 4 5 6 Motorized valve closed burner on alarm off Motorized valve open burner on alarm off Motorized valve open burner off alarm...

Страница 9: ...al rating 1 2 4 5 6 ALARM NEUTRAL HOT ALARM NEUTRAL HOT 1 2 4 5 6 1 2 4 5 6 SEE PUMP CONTROL CIRCUIT TO NEUTRAL TO BURNER CONTROL CIRCUIT HOT ALARM 1 2 4 5 6 LOAD LINE 3 PHASE SEE PUMP CONTROL CIRCUIT...

Страница 10: ...erification of proper operating sequence If the burner comes on immediately turn the boiler off and make the necessary corrections Failure to follow this warning could cause an explosion or fire and r...

Страница 11: ...on NOTE Refer to page 2 for switch operating points Open upper valve 1 Slowly open the lower valve 2 Water in the sight glass should lower As the water in the sight glass lowers the pump should turn o...

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