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EQUIPMENT INCLUDED
GGT SERIES — Hot Water Models
One per module unless otherwise noted
• Pre-assembled heat exchangers with built-in air separators
and insulated jacket.
• Base.
• Flue collector.
• Gas burners, gas orifices and manifold assembly.
• Combination gas valve including manual shut-off pressure
regulator.
• Hi-limit control.
• System pressure and temperature gauge (unmounted, one
per system).
Figure 6. Gas Caravan—optional header assembly for all models GGT hot water Caravan systems
• Module pressure and temperature gauge (unmounted).
• Module pressure relief valve (ASME) (unmounted). Specify
30, 50 or 100 psi.
• Control header (unmounted, one per system).
• Draft hoods (unmounted).
OPTIONAL EQUIPMENT
• Hot water supply and return header assemblies.
• Control panel with automatic lead lag.
• Spark ignition system.
• Vent dampers.
• External DHW heat exchanger.
*Building piping must be rigidly secured so it cannot
move where connected to headers.
NOTE:
Shown reverse return (Preferred). For direct return,
header assembly piping connections may be made at
the same end of the boiler bank, not as shown.
Some governing agencies do not allow compression
type couplings. Consult your local code requirements.
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