Utica Boilers UB95M-200 Guide De Référence

36

manual fans-

peed

-1 (auto op-

eration)

0 to 100 (%)

-1 (auto)

0 to 100 (%)

initial reading:

use this parameter, if desired, to manually 

set the boiler at a fixed input. The manual 
operation will only continue for 15 minutes. 
the  control  module  then  returns  to  auto-
matic operation.

P

.

3

6

after 2 to 3 seconds:

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Setting

37 

(1st 

digit)

37 

(2nd 

digit)

PWm level  

CH-pump

1 to 4  

(pump speed) 

1 to 4

initial reading:

this function is not currently supported.

P

.

3

7

after 2 to 3 seconds:

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digit 

1

digit 

2

38

t Hold

32

(feature off) 

32 to 176° F

32

(feature off)

 

32 to 176

initial reading:

Parameter 38 sets minimum standby tem-
perature for boiler. if boiler outlet or return 
water temperature is sensed at less than t 

Hold, the boiler fires (without pump operat-
ing to bring temperature up to t Hold).

P

.

3

7

after 2 to 3 seconds:

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Setting

39

t6 top

2nd CH 

circuit

50 to 176° F

50 to 176

initial reading:

• This function is not currently supported.

• Sets max. target boiler temperature dur-
ing call for heat from 2nd CH circuit (same 

function as T1 Top for first CH circuit).

P

.

3

9

after 2 to 3 seconds:

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Setting

40

t6 Foot

2nd CH 

circuit

50 to 70° F

50 to 70

initial reading:

• This function is not currently supported. 

• Sets min. target boiler temperature dur-
ing call for heat from 2nd CH circuit (same 

function as T1 Foot for first CH circuit).

P

.

4

0

after 2 to 3 seconds:

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Setting

41

t6

differential

2nd CH 

circuit

2 to 54° F

2 to 54

initial reading:

• This function is not currently supported. 

• T6 Differential is the differential (hyster-
esis) for call for heat from 2nd CH circuit is 
master. Boiler starts when outlet tempera-
ture drops t6 differential below target out-
let temperature. 

P

.

4

1

after 2 to 3 seconds:

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Setting

42 

(1st 

digit)

42 

(2nd 

digit)

Special pump 

CH/dHW 

Low/Off cycle

0, 1, 2, or 3 

(see right)

0

(feature off) 

1

(feature on)

0 to 3

0 or 1

initial reading:

First digit (Special pump CH/dHW):  

• 0 - NOT RECOMMENDED

 
normal circulator operation for CH and dHW 

 

• 1 - NOT RECOMMENDED 
Boiler circulator off on CH call for heat.  
normal circulator operation on dHW.  

• 2 - RECOMMENDED SETTING

 
Boiler circulator normal operation. dHW 
circulator 5-second delay before starting. 
• 3 - NOT RECOMMENDED 
Boiler circulator off on CH call for heat. 
dHW circulator 5-second delay before 
starting.

Second digit (Low/Off) cycle):

• If boiler continues firing at low fire for 3 
minutes  or  longer,  the  boiler  will  begin 

cycling  like  an  on/off  boiler,  firing  only 

at low fire, for cycle times of 10 minutes.  
• The boiler will return to normal (modulat-
ing)  operation  if  the  burner  is  either  off  or 
on for at least 9 minutes. 

P

.

4

2

after 2 to 3 seconds:

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digit 

1

digit 

2