GB
AMULET INSTALLATION INSTRUCTIONS
(Required on some models)
Amulet shown in the flush mounted position
The amulets provided have been selected by Riello to protect the |
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combustion tube from hot exhaust gases and flame. This protec- |
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tion may be needed in applications where the combustion tube |
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opening in the combustion chamber refractory is larger than the |
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tube outside diameter. |
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The amulet has been sized to fit Riello Model 40 sizes F3 and F5 |
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plus the Riello Model R35. |
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When installing this amulet, handle it carefully. | Head receeded | ||||||
Do not exert undue pressure when pushing the amulet over the | |||||||
1/4 inch max. | |||||||
combustion tube. |
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| D7285 | |
Excessive force can result in a broken amulet! |
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If the amulet will not fit easily onto the tube, remove a small amount
of the inner diameter with a sharp knife to provide the necessary clearance.
The diagram below shows the proper position of the amulet after installation.
NO AMULET | AMULET |
FLUE GASES
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| Tapered combustion | ||
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| chamber causes increase | ||
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| in pressure inside | |
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LOW PRESSURE |
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| HEAT | ||
AIR TUBE |
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| HIGH PRESSURE |
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| HEAT | ||
Increase in pressure | Increase in pressure down | |||
down air tube due | air tube due to increase | |||
to increase in | in combustion chamber | |||
combustion chamber |
| pressure | ||
pressure |
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| FLUE GASES | |
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| Tapered combustion | ||
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| chamber causes increase | ||
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| in pressure inside | ||
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LOW PRESSURE |
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| HEAT | |
AIR TUBE |
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| HIGH PRESSURE |
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| HEAT | |
Amulet helps prevent | Increase in pressure down | |||
not gases from | air tube due to increase | |||
travelling down | in combustion chamber | |||
air tube |
| pressure | ||
S7941
3223
5
