Buderus Logano plus GB312, Руководство по установке

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6
Installing the boiler
Logano plus GB312 - Technical specifications are subject to change without prior notice 22
6 Installing the boiler
This chapter details how to install the boiler. The individual
steps involved are:
– Flue and air supply system
– Heating circuit connection
– Connecting the fuel supply
– Making the electrical connections
General notes on installing the flue and air supply
system
The boiler requires a flue system approved for Category
IV (condensing, positive pressure; to ANSI Z21.13/
CSA4.9). The material must consist of AL 29-4C stainless
steel and conform to UL 1738 or UL 103.
In Canada, the flue system material must conform to ULC-
636.
We recommend stainless steel flue systems made by the
following manufacturers:
In the USA, PVC and CPVC pipes to Schedule 40 and
Schedule 80 ASTM D1784 can also be used. We recom-
mend the following manufacturers:
If a plastic system (CPVC or PVC) is used in Canada, it
must be approved as a type "BH gas venting system"
(ULC-S636). Components made by different manufactur-
ers must not be used in the same flue system nor may any
uncertified components or materials be used in the flue
system. The components, adhesives and adhesive prim-
ers specified by the flue system manufacturer must be
used. Only components, adhesives, adhesive primers,
etc. made by the same manufacturer may be used.
The following systems are approved for use in Canada
and may be used with this boiler:
Flue/air supply system installation must comply with Part
10, Venting of Equipment, of the National Fuel Gas Code
NFPA 54 (ANSI Z223.1), or CAS B.149 or other applica-
ble local building code regulations.
The flue and air supply system (for design of air supply
connection
Æ Section 6.5, page 26 ) must be designed
for a max. pressure of 0.40 inches W.C. (100 Pa) for the
overall system (flue and air supply system).
Observe the following points when installing the flue duct-
ing:
– The cross-sectional area of the flue pipe must be cal-
culated according to the applicable regulations. Guid-
ance on the dimensioning of the flue/air supply system
can also be obtained in the Application Manual GB312
US/CA.
– Select the shortest possible route for the flue pipe.
– Install flue pipes with an upward slope from the boiler
(¼" per foot).
We recommend the fitting of a protective grille (bird
screen) to the flue pipe terminal.
For details of correct dimensioning, contact the venting
manufacturer concerned.
Flue system for multi-boiler systems (cascading
systems)
These instructions relate only to single-boiler systems.
Flue/air supply systems for multi-boiler systems must be
designed by qualified heating engineers and approved
and guaranteed by the flue system manufacturer. The flue
system must prevent back-flow of flue gas through boilers
that are not in operation.
Manufac-
turer
Flue system
heat fab Saf-T Vent EZ Seal
Z-Flex Z-Vent IV special gas vent
Metal Fab CorrGuard
Pro-Tech Fasnseal
Tab. 5 Recommended flue systems
Manufac-
turer
System
Spears, Char-
lotte CPVC pipe to Schedule 80 ASTM
D1784, PVC pipe to Schedule 40
ASTM D1784
Tab. 6 Recommended system for USA
Manufac-
turer
Flue system
IPEX System 636 CPVC, System 636 PVC
Tab. 7 Recommended flue system for Canada
All instructions relating to all parts of the flue
system, and especially the instructions of the
flue system manufacturer, must be followed.
Use only flue pipes with the appropriate di-
ameter for the output rating of the boiler and
made by the recommended manufacturers
listed in Table 5, 6 or 7.
Danger: Risk of fatal injury from escaping
flue gases in the boiler room.
V
The seal in the condensate pan flue con-
nection must be present, undamaged and
correctly inserted.
V
Fitting an air inlet flap in the flue system is
not permitted.