is on the rating plate and the label on the side of the gas valve control. Poor flames can also be caused by incorrect gas pressures or burner orifice size, inadequate or contaminated air, a restriction in the venting system, or dirt entering the
∙For units with cast iron burners, the flame presentation should be the same as sheet metal burners. Adjustment is possible on cast iron burners by changing the air shutter position on the burner inlet. If the flame needs adjusting, loosen the two screws and move the shutter. See Figure 12. If it is too far open, the flame will lift or will be noisy; if it is closed too far, the flame will be luminous and yellow. Once proper flame is obtained, tighten the screws to secure the air shutter.
NOTE: Ø There is no adjustment on sheet metal burners.
ØAlways return the burner doors to their original position
gas supply. These conditions must be corrected to prevent a possible safety hazard.
Your water heater has been supplied with an anode rod that protects the tank from corrosion, As the rod works, it slowly dissolves over time and must be replaced when it becomes totally consumed. Depending on water conditions, an anode can last from two to ten years. As with any water heater, it is good practice to check the anode annually to see if it needs replacing (Figure 1, Item No. 15).
To inspect or change an anode:
•turn off the water heater
•close the cold inlet supply valve
•open a hot water tap supplied by the heater
•drain the water heater enough to empty the piping system
•using a 1 1/16" socket, remove anode and inspect or replace as required.
•refill system with water and restore water heater to operation
WARNING 
Operating a water heater without an actively working anode rod will void the warranty.
VII) GENERAL OPERATION AND MAINTENANCE
Condensation
Water vapor in the flue gases can condense on the cooler surfaces of the water heater, especially during the start of a cold tank, during heavy use, or if the water heater is undersized. Condensation can also be produced in the vent piping if the vent piping becomes chilled (e.g. going through unheated areas) or if the dilution air is very cold.
Condensation may give the false impression that there is a tank leak as significant amounts can drip out of the bottom of the water heater. Once the water heater is operating at normal temperatures tank condensation should disappear. See venting section for dealing with condensation in the vent piping.
Cathodic Protection - Anode
Hot Water Odour
On occasion, and depending on your location, hot water may develop a strong odour. This can be especially problematic in regions where the water contains some sulphur, which results in hot water having a “rotten egg” smell.
If this occurs, drain the system completely, flush thoroughly and refill. If the problem persists, the anode rod may need to be changed from magnesium to one made of aluminum. In certain cases chlorination and flushing of the water heater may be required. Contact you dealer or water supplier.
Not Enough or No Hot Water
•Check that the water heater is operational
•Check that the thermostat is set high enough
