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1.0 Introduction
The gas-fired modulating boilers are low pressure, fully condensing units with a variable input range.
Approved as “Category IV” vented appliances, the boilers use direct vent (sealed combustion) or
indoor combustion air.
Figure 7
View from the front - SL 26-260 G3
Figure 8
View from the front - SL 40-399 G3
Summary of Contents for SL Series
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Page 12: ...Figure 5 Top view SL 40 399 G3 Figure 6 Bottom view SL 40 399 G3 8 Section Specifications...
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Page 64: ...Figure 40 Electric wiring connections 60 Section Installation...
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Page 110: ...Internal wiring diagram Figure 46 Internal wiring diagram 106 Section Appendices...
Page 111: ...Sequence of operations Figure 47 Sequence of Operation 107 Sequence of operations...