Venting System Inspection - American Standard D80-125 Operating, Installation And Service Manual

DANGER
DO NOT STORE OR USE ANY COMBUSTIBLE MATERI-
ALS OR LIQUIDS, SUCH AS GASOLINE, PAINT
THINNERS OR OTHER FLAMMABLE VAPORS NEAR
ANY GAS BURNING APPLIANCES. VAPORS MAY BE
IGNITED BY THE PILOT OR MAIN BURNER FLAMES.
NO OBSTRUCTION SHOULD BE IN THE FLOW OF
COMBUSTION AND VENTILATION AIR.
INSTRUCTIONS FOR CLEANING TANK
A clean-out procedure is provided for periodic cleaning of the
tank. Be sure that you have a new O ring on hand before
proceeding. Part Number 10099.
1. Shut off gas supply to water heater.
2. Shut off electric supply.
3. Shut off water supply to water heater.
4. Open the nearest hot water faucet.
5. Attach hose to drain valve, and open drain valve so water
can drain from water heater .
WARNING
This water can be hot.
6. Remove jacket clean-out cover from jacket (4 screws).
7. After the water heater has been drained, remove the hex head
bolts and the plate will come loose. If necessary, tap lightly
on the outside edge.
8. After tank has cooled, remove loose scale and lime deposits
from inside tank, being careful not to break glass lining
TO RETURN WATER HEATER
TO OPERATION
1. Replace O ring.
2. Re-install hand hole plate, with the hex head bolts, inserting
all bolts in place before beginning final tightening. Tighten
bolts, rotating on opposite sides, rather than in a continuous
circular pattern.
3. Tighten water connection. Open cold water inlet valve to fill
tank. When water flows in a steady even stream, close hot
water faucet previously opened.
4. Turn on gas and/or electric supply to heater.
5. Using lighting instructions located on jacket of heater, put
heater into operation.
VACATION
When the heater is not to be used for extended periods of time
(vacations, etc.) turn the temperature dial to its lowest setting.
This will maintain the water at relatively low temperatures
with minimum energy losses and prevent the tank from
freezing during cold weather. When making adjustments to
the electronic controller temperature setting, refer to the
section on
ELECTRONIC CONTROLLER
8
WARNING HYDRO-GEN GAS.
COMBINATION SPACE HEATING /
POTABLE WATER HEATING SYSTEM
When using this heater as a source of heat for a combination space
heating/potable water heating system, be sure to follow manual(s)
shipped with air handler system. Refer to figure 15 page 19.
Note the following warnings:
Toxic chemicals, such as those used for boiler treatment, shall
NEVER be introduced into this system.
This unit may NEVER be connected to any existing heating
system or component(s) previously used with a non-potable water
heating appliance.
DO NOT use with piping that has been treated with chromates,
boiler seal or other chemicals.
DO NOT add boiler treatment or any chemicals to any heat piping,
since the piping contains potable water.
DO NOT use with ferrous piping. The system should be installed
only with new piping that is suitable for potable water, such as
copper or polybutylene. DO NOT use with PVC piping.
DO NOT use with any pumps, valves, or fittings that are not
completely compatible with potable water piping.
DO NOT use valves that may cause excessive restriction to water
flow. USE FULL FLOW BALL OR GATE VALVES ONLY.
DO NOT tamper with the electronic controller, gas valve, igniter
control or temperature and pressure relief valve. Tampering with
any of these components is DANGEROUS and can result in
property damage or severe injury. Tampering voids all warranties.
Only qualified personnel should service these components.
DO NOT use 50/50 solder in potable water lines.
IF THE SPACE HEATING system requires water temperatures in
excess of 140°F, a mixing valve or other means should be installed
in the domestic (potable) hot water supply to limit the RISK OF
SCALD DAMAGE.
SOME JURISDICTIONS may require a backflow preventer in the
incoming cold water line to the water heater. In such cases, the
.
temperature and pressure relief valve on the water heater may
weep or relieve due to expansion of the heated water. A
diaphragm-type expansion tank will normally eliminate this
weeping condition. Please read and follow the manufacturer's
instructions for installation of such tanks.

VENTING SYSTEM INSPECTION

Check the draft hood relief opening (Figure 5) using a match flame
after 15 minutes of operation. Pass the match flame around the
relief opening of the draft hood. A steady flame drawn into the
opening indicates proper draft. If the flame flutters or is blown out
this would indicate spillage and corrective action must be made to
the vent. (Figure 5)
At least every 3 months a visual inspection should be made of the
venting system. You should look for:
CONDENSATION
Whenever the heater is filled with cold water there will usually be
a certain amount of condensation formed while the burner is ON.
Moisture from the products of combustion condenses on the cooler
tank surfaces to produce a "sizzling" or "frying" noise. During the
winter months this condition will be more pronounced.
Condensation is normal and should not be confused with a leaking
. Also refer to Page
tank. The water will be noted at different times of the year and in
varying quantities.
13
Obstructions which could cause improper venting.
Damage or deterioration which could cause improper venting
or leakage of combustion products.
150158 Rev. 03 January-2011