6
2.2 Bosch GWH 715 ES
Features:
Electronic ignition and built in power vent 82% thermal efficiency
Vents vertically or horizontally with 3" or 4" stainless steel (AL29- 4C)
Direct vent
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
Qualifies for $300 tax credit
GWH 715 ES Technical Specifications
Gas input | Natural Gas: 19,900 - 199,000 BTU | |
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| LP Gas: 19,900 - 199,000 BTU | |
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Minimum flow 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 | |
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Thermal Efficiency | NG: 82% LP: 82% | |
Dimensions | 30½" h x 17⅞" 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) | |
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GWH 715 ES Installation Specifications |
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Gas connection | ¾" Male NPT | |
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Water connections | ¾" Male NPT |
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NG gas pressure | Minimum: 4" W.C. | |
| Maximum: 14" W.C. | |
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LP gas pressure | Minimum: 9" W.C. | |
| Maximum: 14" W.C. | |
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Water pressure | Minimum: 30 PSI | |
(Static) | Minimum well pressure: 40 PSI | |
| Maximum: 150 PSI |
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Electrical supply | 120VAC - plugs in |
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Venting | 3" or 4" stainless steel | |
| direct vent | |
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Applications manual
GWH 715 ES Installation Clearances
Top (A) | 12" |
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Front (B) | 1" |
Back | 0" |
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Sides | 1" |
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Floor (C) | 12" |
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3ft minimum distance
3ft minimum distance
Fig. 1 Venting configurations
Installation guidelines:
Venting:
Must be 3" or 4"
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 fill condensate drain tube loop (where applicable) with water prior to start up.
Application manual 11.2007 | Bosch Water Heating |