Weil-McLain 78 Manual page 8

Assemble Block
Prepare remaining sections:
Section Arrangement Table
Maximum Section Arrangement
Boiler No. of
Model Heaters
378 W&S
478 W&S
578 W&S
678 W&S
778 W&S
878 W&S
978 W&S
1078 W
1078 S
1178 W
1178 S
1278 W
1278 S
(all heaters must be
on left side of boiler)
1 F-TI-B
1 F-TI-I-B
2 F-TI-I-TI-B
2 F-TI-I-TI-I-B
2 F-TI-I-TI-I-I-B
3 F-TI-I-TI-I-I-TI-B
3 F-TI-I-TI-I-TI-I-I-B
3 F-TI-I-TI-I-I-TI-I-I-B
3 F-TI-I-TI-SI-I-TI-I-I-B
4 F-TI-I-TI-I-I-I-TI-I-TI-B
4 F-TI-I-TI-I-SI-I-TI-I-TI-B
4 F-TI-I-TI-I-I-I-I-TI-I-TI-B
4 F-TI-I-TI-I-SI-I-I-TI-I-TI-B
Install burner mounting plate on front
section:
Install observation port assemblies
on front and back sections:
If using TI sections: