1 4 | Applications manual |
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2.10 Bosch GWH 260 PN
Features:
Standing pilot ignition
78% thermal efficiency
Mounts on wall for easy installation
Venting: 4" double wall
Modulating gas valve — constant temperature at varying flow rates Model GWH 260 PN N for natural gas (NG) supply
Model GWH 260 PN L for liquid propane (LP) supply
GWH 260 PN Installation Clearances
Top (A) | 12" |
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Front (B) | 4" |
Back | 0" |
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Sides | 4" |
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Floor (C) | 12" |
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GWH 260 PN Technical Specifications
Gas input | Natural Gas: 30,735 - 74,900 BTU |
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| LP Gas: 30,735 - 74,900 BTU |
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Minimum flow to activate | 0.6 gallons per minute (gpm) |
Flow rates | 45˚F rise @ 2.6 gpm |
| 55˚F rise @ 2.1 gpm |
| 65˚F rise @ 1.7 gpm |
| 77˚F rise @ 1.5 gpm |
| 90˚F rise @ 1.3 gpm |
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Thermal Efficiency | NG: 78% LP: 78% |
Dimensions | 28.8" h x 12.2" w x 8.5" d |
Weight | 25 lbs. |
Modulating gas valve | yes |
Ignition | Standing pilot |
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GWH 260 PN Installation Specifications | |
Gas connection | ¾" Male NPT |
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Water connections | ¾" Male NPT |
NG gas pressure | Minimum: 7" W.C. |
| Maximum: 14" W.C. |
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LP gas pressure | Minimum: 11" W.C. |
| Maximum: 14" W.C. |
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Water pressure | Minimum: 30 PSI |
(Static) | Minimum well pressure: 40PSI |
| Maximum: 150 PSI |
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Electrical supply | 120VAC - plugs in |
Venting | 4" double wall |
| draft |
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LIS TED VE NT C AP
MINIMUM 6
FE ET (1.8M)
LIS TED G AS VE NT
E S TAB LIS H A ONE
F OOT R IS E B E F OR E
ANY E LB OW S
Fig. 4 Venting configuration
Installation guidelines:
Venting:
4" minimum diameter — do not reduce vent size. Refer to installation manual for vent material options
Do not combination vent with any power vented appliances.
Establish a one-foot rise before any elbows
Minimum vent height - 6 feet.
Horizontal sections must slope upwards at least ¼" for every foot of the horizontal length and be properly supported.
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 full port ball valves for isolation valves.
Application manual 11.2007 | Bosch Water Heating |
