Start Up Conditions
Thermal Expansion
Property Damage Hazard
•Avoid water heater damage.
•Install thermal expansion tank or device if necessary,
•Contact qualified installer or service agency
Water supply system may, because of such events as high line pressure, frequent
The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving
point of water heater's
reached, the valve will relief the excess pressure. The
condition and must be corrected.
It is recommended that any devices installed which could create a closed system have a
Thermal Expansion Tank Specifications
| Tank | Dimensions | Pipe | |
Model | Capacity | in inches | Fitting | |
Number | In Gallons | Diameter | Lenath | On Tank |
153.331020 | 2 | 8(203mm) | 3/4"Male | |
153.331050 | 5 | 11(279mm) | 3/4"Male |
| Expansion | Tank | Sizing | Chart |
|
|
| Inlet* | Water | Heater Capacity | (Gallons', | ||
| Water |
|
|
|
|
|
| Pressure | 30 | 40 | 50 | 66 | 80 |
Expansion | 4Opsi | 2 | 2 | 2 | 5 | 5 |
Tank | 5Opsi | 2 | 2 | 2 | 5 | 5 |
Capacity | 6Opsi | 2 | 2 | 5 | 5 | 5 |
Needed | 7Opsi | 2 | 2 | 5 | 5 | 5 |
| 8Opsi | 2 | 5 | 5 | 5 | 5 |
*Highest recorded inlet water pressure in a 24 hour period or regulated water pressure.
NOTE: Expansion tanks are
WATER HEATER | (3) |
COLD WATER | PRESSURE |
coLe ..LETP...,Ne
PBESSOREGAO E
RECOMMENDED INSTALLATION
(VERTICAL MOUNTING)
WATER HEATER
COLD WATER
INLET FITTING | FLOOR, CEILING JOIST, ETC. |
|
| PRESSURE |
| _,_. | REDUCING |
| 13) | |
|
| VALVE WITH |
/ | (1) | |
TANK^! | ||
| EXPANSION |
|
/ | / | t |
|
| WATER |
| PRESSURE GAUGE | INLET COLD |
| ALTERNATE RECOMMENDED | INSTALLATION |
| (HORIZONTAL MOUNTING) | |
| FIGURE26, |
|
Strange | Sounds |
|
Possible noises due to expansion and contraction of some metal parts during periods of
Condensation causes sizzling and popping within the bumer
area during heating and cooling periods and should be considered normal. See Condensation section.
Draft Hood Operation
Check draft hood operation by performing a worst case depressurization of the building. With all doors and windows closed, and with all air handling equipment and exhaust fans operating such as furnaces, clothes dryers, range hoods and bathroom fans, a match flame should still be drawn into the draft hood of the water heater with its burner firing. If the flame
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