Proper Piping Practice - Viessmann WB1A Series Installation And Service Instructions Manual

Connections
(continued)

Proper piping practice

2 imperfect threads
Thread pipe right length
Gas connection and piping
¨
Legend
Water supply connection
Condensate drain connection
Gas connection
Water return connection
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Use moderate amount of dope
Leave 2 end threads bare
Boiler Connections
Support piping by proper suspension
method. Piping must not rest on or be
supported by boiler.
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.
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