SERVICE INFORMATION
Properly maintained, your water heater can provide years of dependable,
trouble-free service. It is suggested that the purchaser follow the
preventive maintenance program outlined below.
A. CONTROLS
❑ A periodic inspection of the operating controls, heat exchanger and
wiring should be made by qualified service personnel. The
temperature of the water should be tested periodically at the faucet
to be sure temperature controllers are working properly.
B. INSTALLING THE REMOVABLE HEAT EXCHANGER
❑ The heat exchanger is installed at the factory. The following is
provided for servicing or removing the heat exchanger.
❑ Insert the heat exchanger with plastic O-ring housing and align top
fittings so the “HX Out” fitting faces forward.
❑ WARNING: Plastic O-ring housing must be properly installed.
(See FIGURE 1 on page 21). Failure to do this will void the
warranty.
❑ Install and secure the clamp and nut in the following manner:
1. Apply anti-seize lubricant to bolt threads.
2. Place the clamp around the flange and coil plate.
3. Ensure the bolt is facing forward and slide through the hole.
4. Hold the clamp together with one hand and tighten the nut with
the other hand. (See FIGURE 1 on page 21).
5. Tighten to 15 ft.-lbs.
❑ NOTE: Be sure that clamp is installed level.
❑ WARNING: Plastic O-ring housing must be installed properly to
prevent leaking (See FIGURE 1 on page 21). Failure to do this
will void the warranty. Must use new O-ring if replaced or
removed.
❑ NOTE: The construction of single wall heat exchanger consists of one
copper tube, wound into a coil. The ends of the tube are soldered into
brass fittings that mate with the hot water supply.
❑ NOTE: The construction of double wall heat exchanger consists of
two copper tubes, one inside the other, wound into a coil. The outer
tube is soldered into the brass fitting that connects into the tank. The
inner tube is soldered into the brass fitting that connects with the hot
water supply. The gap between the two tubes is open to the air,
allowing visible detection of any leaks, as well as preventing any
cross contamination between liquids.
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