Applications manual | 7 |
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2.3 Bosch GWH C 800 ES
Features:
Electronic ignition and built in power vent Condensing technology with 92% thermal efficiency
Vents vertically or horizontally with 3" or 4" PVC, CPVC or ABS (Schedule 40) vent pipe.
Direct vent
Computerized temperature control — ensures temperature stability Model GWH C 800 ES N for natural gas (NG) supply
Model GWH C 800 ES L for liquid propane (LP) supply
Qualifies for $300 tax credit
GWH C 800 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 @ 8.0 gpm | |
| 55˚F rise @ 6.4 gpm | |
| 65˚F rise @ 5.5 gpm | |
| 77˚F rise @ 4.6 gpm | |
| 90˚F rise @ 3.9 gpm | |
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Thermal Efficiency | NG: 92% LP: 92% | |
Dimensions | 30½" h x 17⅞" w x 11¼" d | |
Weight | 74 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) | |
| Concentic Termination Kit | |
| (BWH60L46) | |
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GWH C 800 ES Installation Specifications |
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Gas connection | ¾" Male NPT | |
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Water connections | ¾" Male NPT | |
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" PVC, CPVC, or ABS | |
| (Schedule 40) direct vent sealed | |
| combustion | |
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GWH C 800 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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MAINTAIN 12 IN. |
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(18 IN. FOR CANADA) | VENT | |
MINIMUM CLEARANCE | ||
ABOVE |
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HIGHEST ANTICIPATED |
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SNOW LEVEL. | COMBUSTION | |
MAXIMUM OF 24 IN. | AIR | |
ABOVE ROOF. | ||
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ROOF BOOT/ |
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FLASHING (FIELD |
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SUPPLIED |
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| MINIMUM |
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| 1” |
INTAKE |
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EXHAUST | INTAKE | VENT |
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| EXHAUST |
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| COMBUSTION |
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| AIR |
DRAIN TEE |
| DRAIN TEE |
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Fig. 1 Venting configurations
Installation guidelines:
Venting:
Must be 3" or 4" PVC, CPVC or ABS (Schedule 40) vent pipe. Attach drain for internal condensate siphon and dispose of according to local codes.
Do not combination vent with any other appliance. Install an external 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)
Bosch Water Heating | Applications manual 11.2007 |