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Macurco GBC Manual 

REV – 1.2 

[34-2900-0690-7] 

17 

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P a g e

 

4.3

 

Programming on detectors to work with the GBC 

The following settings must be updated for proper operation of the GBC. 

Settings: 

CM-6/CM-12 

Default 

Change To: 

GD-6/GD-12 Default 

Change To: 

Power Up Test 

On 

Off 

On 

Off 

Display 

On 

On 

On 

On 

Buzzer 

On 

On 

On 

On 

Alarm Relay Setting  200 ppm 

200 ppm 

20% LEL 

20% LEL 

Alarm Relay 

Configuration 

Normally Open (NO) 

Normally Closed 

(NC) 

Normally Open (NO) 

Normally Closed 

(NC)

 

Fan Relay Setting 

35 ppm 

50 ppm 

10% LEL 

10% LEL 

Ran Relay Delay 

3 minutes 

0 minutes 

3 minutes 

0 minutes 

Fan Relay 

Minimum Runtime 

0 minutes 

0 minutes 

0 minutes 

0 minutes 

Fan Relay Latching  Off 

On 

Off 

On 

Trouble Fan Setting  Off 

Off 

Off 

Off 

4-20mA 

bAS (basic) 

bAS (basic) 

bAS (basic) 

bAS (basic) 

Calibration due 

dIS (disabled) 

dIS (disabled) 

dIS (disabled) 

dIS (disabled) 

Table 4-1 – Detector Settings Table 

4.3.1

 

Power-Up Test Setting – “PUt”  

To select the Power Up Test Configuration, in normal mode, push the Next button to get to “Con” or the 

Configuration menu. Then push the Enter button to enter the Con menu. Then push the Next button to get to the 

second selection “PUt” or Power Up Test setting. Push Enter. If the testis “On” push Next to turn it “OFF” (flashing) 

then push Enter to confirm the change (solid) and push Enter again to return to “PUt” in the Con menu. Push Next 

until “End” is displayed then push Enter to get back to normal operation. 

4.3.2

 

Alarm Relay Configuration – “Arc”  

To select the Alarm Relay Configuration, in normal mode, push the Next button to get to “Con” or the Configuration 

menu. Then push the Enter button to enter the Con menu. The sixth selection is the “Arc” or Alarm Relay 

Configuration. Push Next five times to get to “Arc” then Enter. If the relay is “nO” (normally open) push Next to turn 

it to “nC” (flashing) then push Enter to confirm the change (solid) and push Enter again to return to “Arc” in the Con 

menu. Push Next until “End” is displayed then push Enter to get back to normal operation. 

4.3.3

 

Fan Relay Setting – “

FrS” 

To select the Fan Relay setting, in normal mode, push the Next button to get to “Con” or the Configuration menu. 

Then push the Enter button to enter the Con menu. The seventh selection is the “FrS” or Fan Relay setting. Push 

Next six times to get to “FrS” then Enter.  

 

CM-XX:

 If the fan relay is “dIS” (disabled) push Next to change it to 15, 25, 35, 50 or 100 ppm (flashing) then 

push Enter to confirm the change (solid) and push Enter again to return to “FrS” in the Con menu.  

 

 

GD-XX:

 If the fan relay is “dIS” (disabled) press Next to change it to 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 

16, 17, 18, 19 or 20% LEL (flashing) then press Enter to confirm the change (solid) and press Enter again to 

return to “FrS” in the Con menu. 

Push Next until “End” is displayed then push Enter to get back to normal operation. 

Summary of Contents for GBC-2-24

Page 1: ...IMPORTANT Keep these user instructions for reference Macurco GBC Gas Boiler Controller Installation Operation Manual...

Page 2: ...e wires to terminals 8 3 2 2 Terminal Connection 9 4 Operations 14 4 1 Power up 14 4 2 GBC Configuration 14 4 2 1 GBC Buzzer and Relay Settings 14 4 3 Programming on detectors to work with the GBC 17...

Page 3: ...e detector or up to four gas detectors the controller can control up to eight dry contact outputs These outputs are designed to shut down the boiler system upon the detection of carbon monoxide and or...

Page 4: ...p to 4 Expansion Relay Boards 24 VDC driver for horn strobe 250 mA Audible Buzzer 90 dBA at 1ft Output power supports combinations of 1 to 4 detector s 350 mA 2 4 Specifications Size 8 x 6 x 3 22 9 X...

Page 5: ...o GBC enclosure has 6 mounting holes and is shipped with mounting screws Install the mounting screws on the four corners of the enclosure The GBC should be mounted with sufficient space all round for...

Page 6: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 6 P a g e Figure 3 2 Enclosure Dimensions...

Page 7: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 7 P a g e Figure 3 3 Mounting dimensions...

Page 8: ...button of the connector 3 Fully insert the bare wire into the wire cavity of the connector Note When inserting the wire make sure that the wire insulation is not inhibiting the wire from contacting t...

Page 9: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 9 P a g e 3 2 2 Terminal Connection Refer to Figure 3 4 below for location of different connectors in GBC Figure 3 4 GBC Board Diagram...

Page 10: ...et meters 18 500 152 16 800 244 14 1250 381 Table 3 1 Recommended Wire Gauge Note Only connect the GBC to Class 2 power supply Note It is recommended to use an independent transformer for powering the...

Page 11: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 11 P a g e Figure 3 6 Single Sensor Channel Wiring...

Page 12: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 12 P a g e Figure 3 7 Dual Sensor Channel Wiring...

Page 13: ...e connections Each terminal can accommodate a wire size from 12 to 24 AWG Each relay PCBS are labels NO1 COM1 and NC1 for Relay 1 and NO2 COM2 and NC2 for relay 2 See Figure 3 8 To use relay 1 connect...

Page 14: ...activated for 10 seconds and the fan relay for 60 seconds during the power up cycle The indicator light LED will flash green during the self test cycle If 4 20 mA setting is set to EnH CM xx will tran...

Page 15: ...f jumper is enabled and external horn strobe will be engaged during activation from the connected sensors o Jumper position 2 3 Split All populated relays 1 through 4 will activate simultaneously base...

Page 16: ...Macurco GBC Manual REV 1 2 34 2900 0690 7 16 P a g e Figure 4 3 Relay Designation...

Page 17: ...return to PUt in the Con menu Push Next until End is displayed then push Enter to get back to normal operation 4 3 2 Alarm Relay Configuration Arc To select the Alarm Relay Configuration in normal mo...

Page 18: ...nd push Enter again to return to Frd in the Con menu Push Next until End is displayed then push Enter to get back to normal operation 4 3 5 Fan Relay Latching Setting FrL To select the Fan Relay Latch...

Page 19: ...Figure 3 3 Mounting dimensions 7 Figure 3 4 GBC Board Diagram 9 Figure 3 5 GBC Board Diagram 10 Figure 3 6 Single Sensor Channel Wiring 11 Figure 3 7 Dual Sensor Channel Wiring 12 Figure 3 8 Relay PC...

Page 20: ...FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO 2 YEARS FROM THE PURCHASE DATE Macurco shall not be liable for any incidental or consequential damages for breach of this or any other warranty e...

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