Condensate Drain
The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely.
Condensate drains from the water heater at the exhaust elbow located at the bottom. The field installed condensate drain line must not be elevated above the condensate drain connection on the condensate trap, see Figure 9. If the condensate does not drain properly it will build up in the exhaust (vent) elbow. This will restrict the flow of flue gases and cause the Blocked Exhaust pressure switch to open its contacts. The control system monitors all pressure switches, if the Blocked Exhaust Switch contacts are open the control system will lock out and disable heating operation. The “Blocked Exhaust” Fault message will be displayed on the control system’s LCD, see Fault And Alert Conditions beginning on page 61.
Note: If the “Blocked Exhaust “ Fault message is ever displayed on the control system LCD, check the condensate drain first and ensure it is not blocked.
CLEANOUT | EXHAUST (VENT) | |
ELBOW | ||
PLUG IS | CONDENSATE DRAIN | |
REMOVED | ||
LINE CONNECTION | ||
TO CLEAR | ||
| ||
DRAIN | CONDENSATE DRAIN | |
| ||
| LINE - FIELD INSTALLED | |
FACTORY INSTALLED | BUILDING | |
CONDENSATE TRAP | DRAIN |
Figure 9
Condensate Drain Water Trap
Breathing Hazard - Carbon Monoxide Gas
Ensure a functioning water trap is installed in the condensate drain.
Gas and carbon monoxide detectors are available.
Install water heater in accordance with the instruction manual.
Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual.
Do not remove the factory installed condensate trap for any reason, see Figure 9. The water heater’s vent pipe is under a slight positive pressure. The water trap prevents flue gases from escaping into the installed space. See Condensate Drain Installation on page 38.
Condensate PH Level
The condensate drains from the water heater’s covered in this manual have PH levels between 4.3 and 5.0. Install a commercially available neutralizing kit if required by local codes.
Note: Lower PH levels are acidic. Do not connect a metal drain line, such as copper, to the water heater for this reason. See Condensate Drain Installation on page 38.
Combustible Material Storage
Fire or Explosion Hazard
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas pressure.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
Keep ignition sources away from faucets after extended periods of
Read instruction manual before
installing, using or servicing
water heater.
Keep appliance area clear and free of combustible materials, gasoline and other flammable vapors and liquids.
Contaminated Air
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with the Instruction Manual and NFPA 54 or
To avoid injury, combustion and ventilation air must be taken from outdoors.
Do not place chemical vapor emitting products near water heater.
Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual.
Corrosion of the flue ways and vent system may occur if air for combustion contains certain chemical vapors. Such corrosion may result in failure and risk of asphyxiation.
Combustion air that is contaminated can greatly diminish the life span of the water heater and water heater components such as hot surface igniters and burners. Propellants of aerosol sprays, beauty shop supplies, water softener chemicals and chemicals used in dry cleaning processes that are present in the combustion, ventilation or ambient air can cause such damage.
Do not store products of this sort near the water heater. Air which is brought in contact with the water heater should not contain any of these chemicals. If necessary, uncontaminated air should be obtained from remote or outdoor sources. The limited warranty is voided when failure of water heater is due to a corrosive atmosphere. (See limited warranty for complete terms and conditions).
If the water heater will be used in beauty shops, barber shops, cleaning establishments, or
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