Viessmann WB1A007 - Page 19

Boiler Connections
19
Connections (continued)
Proper piping practice
Support piping by proper suspension
method. Piping must not rest on or be
supported by boiler.
Gas connection and piping
Legend
Water supply connection
Condensate drain connection
Gas connection
Water return connection
1. Make gas connection in accordance
with codes CAN/CSA B149.1 or
National Fuel Gas Code ANSI
Z223.1/NFPA 54, as well as local
codes where applicable.
2. Close gas shutoff valve on boiler.
3. Perform leak test.
4. Bleed air from gas supply pipe.
See following page for details on gas
connection and piping.
5581 775 1.3
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Leave 2 end threads bare
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hread pipe right length
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