Bosch Appliances GWH 260 PN/HN2 Water Heater User Manual


 
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Applications manual
Application manual | 11.2007
Bosch Water Heating
2.2 Bosch GWH 715 ES
Features:
Electronic ignition and built in power vent
82% thermal ef ciency
Vents vertically or horizontally with 3" or 4" stainless steel (AL29-
4C)
Direct vent room-sealed combustion
Computerized temperature control — ensures temperature stability
Model GWH 715 ES N for natural gas (NG) supply
Model GWH 715 ES L for liquid propane (LP) supply
15-year warranty
Quali es for $300 tax credit
GWH 715 ES Technical Speci cations
Gas input Natural Gas: 19,900 - 199,000 BTU
LP Gas: 19,900 - 199,000 BTU
Minimum ow to activate 0.65 gallons per minute (gpm)
Flow rates 45˚F rise @ 7.2 gpm
55˚F rise @ 5.9 gpm
65˚F rise @ 5.0 gpm
77˚F rise @ 4.2 gpm
90˚F rise @ 3.6 gpm
Thermal Ef ciency NG: 82% LP: 82%
Dimensions 30½" h x 17" w x 11¼" d
Weight 67 lbs.
Modulating gas valve yes
Ignition Electronic
Accessories Outdoor kit (PTOK)
Wireless Remote (TSTAT2)
Tankless Link Cascading Kit (TLINK)
Freeze Prevention Kit (8700400022)
Water Filter Kit (8703305356)
GWH 715 ES Installation Speci cations
Gas connection ¾" Male NPT
Water connections ¾" Male NPT
NG gas pressure Minimum: 4" W.C.
Maximum: 14" W.C.
LP gas pressure Minimum: 9" W.C.
Maximum: 14" W.C.
Water pressure
(Static)
Minimum: 30 PSI
Minimum well pressure: 40 PSI
Maximum: 150 PSI
Electrical supply 120VAC - plugs in
Venting 3" or 4" stainless steel (AL29-4C)
direct vent
room-sealed combustion
GWH 715 ES Installation Clearances
Top (A) 12"
Front (B) 1"
Back 0"
Sides 1"
Floor (C) 12"
3ft minimum
distance
3ft minimum
distance
Fig. 1 Venting con gurations
Installation guidelines:
Venting:
Must be 3" or 4" AL29-4C sealed stainless steel vent pipe.
Slope horizontal runs up to termination ¼" per foot. The last
horizontal section of exhaust vent pipe between last elbow and
termination must slope down to the termination ¼" per foot.
Do not combination vent with any other appliance.
Install condensate drain where applicable.
See manual for vent terminator clearances.
Gas piping:
Heater will not function properly without adequate supply gas
pressure.
Any appliance connector should be ¾" minimum diameter
Plumbing:
Install the included pressure relief valve and pipe to suitable
drain.
Minimum piping diameter is ¾".
Do not solder directly to the bottom of the unit.
Use unions to facilitate easy future maintenance.
Use full port ball valves for isolation valves.
Partially ll condensate drain tube loop (where applicable) with
water prior to start up.