Siemens RWF40 用户手册

7/16 CC1B-Hints-en

Preliminary

04.02.2003 HVAC Products

2. Hints

2.6 Manual operation continued…

Modulating burner, 3-Position output

Press

and hold for 5 seconds, and release.

The

red

LED above the manual icon turns

on to indicate that the controller is now in the
manual mode.

Relay 2 and relay 3 will hold their current state,
(energized or de-energized) that they were in until
another key is pressed.

When the

When

the

is pressed:

is released:

-Relay 3 is

energized

de-energized

-Decrease icon

turns on

turns off

-N.O. contact Q-Y2

closes, to drive the

opens, to hold the

modulating device

down, which

where it is, which

decreases the

holds the

firing rate

of the burner.

When the

When

the

is pressed:

is released:

-Relay 2 is

energized

de-energized

-Increase icon

turns on

turns off

-N.O. contact Q-Y1

closes, to drive the

opens, to hold the

modulating device

up, which

where it is, which

increases the firing

holds the firing

rate of the burner.

Modulating burner, Modulating output

Press

and hold for 5 seconds, and release.

The red LED above the manual icon turns
on to indicate that the controller is now in the
manual mode.

Relay 2 and relay 3 will hold their current state,
(energized or de-energized) that they were in until
another key is pressed.

By design, the 0 output starts driving the modulating device to low

fire, but if you promptly press the

after the red LED above the hand

icon turns on, you can prevent the from going all the way.

When the

is pressed,

is released,

the output value

output value,

starts increasing,

stops increasing,

and the output,

to terminals

X1+ and X1-

X1+ and X1- also

starts increasing,

stops increasing,

the same amount,

and holds

and increases

the current

the firing rate

firing rate

of the burner.

When the

is pressed,

is released,

the output value

output value,

starts decreasing,

stops decreasing,

and the output,

to terminals

X1+ and X1-

X1+ and X1- also

starts decreasing,

stops decreasing,

the same amount,

and holds

and decreases

the current

the firing rate

firing rate

of the burner.

To exit manual operation

Press

for 5 seconds, and release.

The red LED above the hand symbol

turns off,

and the controller returns to the automatic mode.

On Modulating burners, with modulating output,

the output to terminals X1 and X2,

also returns to automatic operation.

On Modulating burners, with 3-position output,

the output to relay 2 and relay 3,

also returns to automatic operation.