Carrier BS1 - Page 3

3
Controls—limit, transformer, and relay
Inducer blower
Water circulator
Spark generator (IID system only)
Pressure switch
Combination gas valve, regulator, and shut-off cock
Burners and pilot (inside access door)
Relief valve
Gage
1
2
3
4
5
6
7
8
9
MODEL BW3
INDUCED-COMBUSTION WATER BOILER
4
Controls—limit, transformer, and relay
Water circulator
Gage
Relief valve
Combination gas valve, regulator, and shut-off cock
Burners and pilot (inside access door)
Vent damper
1
2
3
4
5
6
7
MODEL BW1 AND BW2
WATER BOILERS
5
Pressure limit control
Spark generator (IID system only)
Low water cutoff
Burners and pilot (inside access door)
Combination gas valve, regulator, and shut-off cock
Gage
Sight glass
Relief valve
Vent damper
1
2
3
4
5
6
7
8
9
MODEL BS12 AND BS2
STEAM BOILERS
6
2
8
1
5
3
6
7
4
9
4
3
1
6
7
2
5
8
9
6
1
7
4
2
3
5