Weil-McLain BCP-8 Installation and Operation Instructions Manual

Loading ...

%&3:,QVWDOODWLRQDQG2SHUDWLRQ0DQXDO

7528%/(6+227,1*

7(03(5$785(,13876

'LVSOD\VKRZV6HQVRU23(1

Check the sensor is connected and the wires are continuous to the BCP-8W. Finally follow the procedure for Incorrect

Temperature Display.

'LVSOD\VKRZV6HQVRU6+257

The BCP-8W sees a short across the input terminals. Remove the wires from the the sensor terminals. The display should change

to read OPEN. If it doesn’t, the BCP-8W may be damaged.

'LVSOD\VKRZVDQ,QFRUUHFW7HPSHUDWXUH'LVSOD\

Remove the wires from the sensor terminals. The display should change to read OPEN. If it doesn’t, the BCP-8W may be

damaged. Take an ohm reading across the detached sensor wires. Take an ohm reading across the detached sensor wires. The

ohm reading should correspond to the Temperature sensor Table. If it does not, the sensor may be damaged.

5HWXUQ6HQVRUGRHVQRW'LVSOD\7HPSHUDWXUH

Check the sensor is connected and the wires are continuous to the BCP-8W. Finally follow the

procedure for Incorrect temperature display.

&21752/23(5$7,21

7RR0XFK+HDW

&KHFNLIWKHFRQWUROKDVDQ\RIWKHIROORZLQJFRQGLWLRQV

 'RPHVWLF+RW:DWHUFDOO- The BCP-8W will raise the temperature of the system to either

Û)RU0D[LPXP7DUJHWRQD'+:FDOO

 5HVHW5DWLRDQG2IIVHW- If excessive heat occurs only in certain weather conditions, adjust

the Reset Ratio and Offset (See Understanding Operating Concept on page 5). If excessive

heat occurs year round, reduce the Offset.

 %RLOHU0RGH6HWWLQJV- The BCP-8W will only sequence boilers with a Mode set to Auto or

Standby. Check to if any boiler stage is set to On.

 &RQWURO6HWWLQJV7KH/DVW6WDJH+ROGZLOODOORZRQO\WKH/HDGERLOHUWRH[FHHGWKHVHWSRLQW

,IWKHVHWWLQJLVWRRKLJKDQGRQO\WKH/HDGERLOHULVRQWKHV\VWHPFDQRYHUKHDW5HGXFHWKH

/DVW6WDJH+ROGVHWWLQJ7KLVZLOOPRVWO\RFFXULQPLOGZHDWKHU

7RR/LWWOH+HDW

&KHFNLIWKHFRQWUROKDVDQ\RIWKHIROORZLQJFRQGLWLRQV

 5HVHW5DWLRDQG2IIVHW- If reduced heat occurs only in certain weather conditions, adjust the

Reset Ratio and Offset (See Understanding Operating Concept on page 5). If reduced heat

occurs year round, increase the Offset.

 6HWEDFNDQG'D\1LJKW6FKHGXOH,IUHGXFHGKHDWRFFXUVRQO\GXULQJVSHFL¿FKRXUVFKHFN

the Day/Night Schedule and the Setback, Boost, and Boost Period values. Either reduce the

Setback or Boost settings or change the Day and Night Schedules.

 %RLOHU0RGH6HWWLQJV- The BCP-8W will only modulate boilers their mode is set to Auto or

Standby. Check if any boiler stage is set to Manual, Off, or Standby.

%RLOHUVDUH6KRUW&\FOLQJ

 0LQLPXP5XQWLPH- Increase the Minimum Runtime only if all boilers tend to short-cycle.

 /DVW6WDJH+ROG,QFUHDVHWKH/DVW6WDJH+ROGRQO\LIWKHOHDGERLOHUWHQGVWRVKRUWF\FOH

6\VWHPLV2YHUVKRRWLQJRU8QGHUVKRRWLQJ

 5HDFWLRQ7LPHDQG0LQLPXP5XQWLPH- If the system is overshooting or undershooting,

adjust Minimum Runtime or the Reaction Time. That depends on if the stages are brought on

fast and were not allowed to turn off until the Minimum Runtime elapsed. Or, the stages were

brought on slowly, however, were allowed to turn off quickly.

 3,'YV266- If the application the system is used on requires fast response that the normal

PID mode cannot provide, try using the OSS mode and adjust the Throttle Range according to

the system requirements.

7HPSHUDWXUH6HQVRU&KDUW

7(03(5$785(

LQ'HJUHHV°)

9DOXH

LQ2KPV

-30 117720

-20 82823

-10 59076

0 42683

10 31215

20 23089

25 19939

30 17264

35 14985

40 13040

45 11374

50 9944

55 8714

60 7653

70 5941

80 4649

90 3667

100 2914

110 2332

120 1879

130 1524

140 1243

150 1021

160 842

170 699

180 583

190 489

200 412

210 349

220 297

230 253

240 217

250 187

Loading ...

Weil-McLain BCP-8 Boiler Control Panels (BCP)

Installation and Operation Instructions Manual - Page 33