Bosch GWH 1600 H - Checking the Draft

WW
WW
W
ARNINARNIN
ARNINARNIN
ARNIN
GG
GG
G
LP & NLP & N
LP & NLP & N
LP & N
G ARE EXTREMELG ARE EXTREMEL
G ARE EXTREMELG ARE EXTREMEL
G ARE EXTREMEL
Y FLY FL
Y FLY FL
Y FL
AMMABLE SOAMMABLE SO
AMMABLE SOAMMABLE SO
AMMABLE SO
TT
TT
T
AKE EXTRA PRECAAKE EXTRA PRECA
AKE EXTRA PRECAAKE EXTRA PRECA
AKE EXTRA PRECA
UTIONS WHENUTIONS WHEN
UTIONS WHENUTIONS WHEN
UTIONS WHEN
PERFPERF
PERFPERF
PERF
ORMINORMIN
ORMINORMIN
ORMIN
G ANY WG ANY W
G ANY WG ANY W
G ANY W
ORK TORK T
ORK TORK T
ORK T
O THE HEAO THE HEA
O THE HEAO THE HEA
O THE HEA
TERTER
TERTER
TER
CT-03
page 1 of 1
rev 09/06
Bosch Water Heating
340 Mad River Park, Waitsfield, VT 05673
©BBT NORTH AMERICA CORPORATION
Bosch Group
CHECKING THE DRAFT
MODELS: 1000P, 1600P, 1600H
260PN, 425PN, 425HN
1. Close all doors and window in the building.
2. Operate all fuel burning appliances and exhaust
systems in the building with the exception of the
tankless water heater. Allow time for these items to
utilize the air in the structure. Up to one hour may
be necessary.
3. Remove the cover from the tankless unit and hold a
recently extinguished match, candle, or any other
visible smoke source in front of the triangular open-
ing on the draft diverter.
4. The smoke should be sucked quickly into the opening
and up the exhaust vent. If the smoke is blown back,
a negative air situation exists and must be corrected.
See the combustion air section in the manual or
bulletin CT-05 N egative air and freeze prevention.
5. Now run the heater for 10 minutes, then hold a
smoke source at the top right side of the draft
diverter. The smoke should be drawn in the louvers
on the side. If this is not the case, the unit is not
drafting properly and flue gases are being exhausted
into the space in which the heater is installed. This
is not safe and must be corrected. Reference the
venting section in the manual to ensure venting is in
accordance with the manufacturer’s specifications.
Note: Poor venting can result in exces-
sive sooting around the water heater,
overheating, and release dangerous
carbon monoxide into the living space
causing serious injury and/or death.
Note: Damage to the heater as a result
of improper venting will not be covered
under warranty.
Step 3: Hold extiguished
match here
Step 5: Hold extiguished
match here
1000P. 1600P, 1600H,
260PN, 425PN, 425HN