Installation Of The Exhaust And Air Intake - Bosch Greenstar FS Series Installation And Maintenance Instructions For Contractors

Fig. 28 Horizontal venting system (telescopic concentric vent kit)
[1] Intake
[2] Exhaust
L 2 feet to 3 feet (610mm to 915mm)
▶ Install the concentric vent adaptor with the screws enclosed.
1
4
Fig. 29 Installing the concentric vent adaptor
[1] Concentric vent adaptor
[2] Screws
[3] Combustion air test port
[4] Flue gas test port
6.9.1

Installation of the exhaust and air intake

DANGER:
Carbon Monoxide poisoning
Improper venting of the Greenstar boiler can result in excessive levels of
carbon monoxide which can result in severe personal injury or death.
▶ The boiler must be vented in accordance with the "Venting of
Equipment" section of the latest edition of ANSI Z 223.1 / NFPA 54
Natural Fuel Gas Code and/or the "Venting systems and air supply for
appliances" section of the latest version of CAN/CGA B149.1 Natural
Gas and Propane Installation Code in Canada and in accordance with
all applicable local building codes.
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
1
L
2
6 720 806 992-02.1O
2
3
6720810590-54.1Wo
DANGER:
Flue connections
Incorrectly fitted flue connections can lead to carbon monoxide escaping
into the boiler room.
▶ Ensure that the flue pipes and seals are not damaged.
▶ Use only sealing compounds (primer and glue) approved with the
vent material.
▶ Never install a barometric or a thermally controlled vent damper with
this boiler.
▶ Connect only one boiler to each flue system.
▶ Do not route the flue system piping through or inside another duct
that is used for exhausting air or other flue gases.
▶ The condensate trap must be primed at all times.
▶ Failure to do so may allow combustion gases to escape into boiler
room.
▶ External insulation on plastic vent pipe is prohibited.
To avoid moisture and frost build-up and to maintain clearances to
openings on adjacent homes, 45° and 90° elbows or tees may be
attached to the end of the vent termination pipe to direct exhaust plumes
away from the adjacent structure. The total allowable vent length,
maximum number of elbows and distance to air intake restrictions must
be adhered to.
Consult local and state codes pertaining to special building code and fire
department requirements. Adhere to national code requirements.
Observe the listed maximum lengths of vent system, which are boiler
model dependent (Section 6.9.3).
Installation
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