A.O. Smith COF-199 THRU 700A Specifications download pdf (Page 20)

THREE UNIT MANIFOLD KIT (PART NO. 78693)

FOUR UNIT MANIFOLD KIT (PART NO. 78694)

CHECK LIST AND SERVICE

INFORMATION

IMPORTANT

The installer may be able to observe and correct certain problems which

might arise when the unit is put into operation or when it is refired after a

prolonged shut-down. HOWEVER, it is recommended that only qualified

servicemen, using appropriate test equipment, be allowed to service the

heater.

DANGER

BE SURE TO TURN OFF THE ELECTRICITY WHENEVER POSSIBLE

OR APPROPRIATE WHEN CHECKING EQUIPMENT.

ELECTRICAL WIRING REPLACEMENT

If any of the original wiring, as supplied with the appliance, must be

replaced, it must be replaced with 16 AWG, or greater, copper conductor

with 600V, 105°C rated, thermoplastic insulation.

NOT ENOUGH OR NO HOT WATER

1. Be certain the oil burner electrical disconnect switch serving the water

heater is in the ON position.

MANIFOLD KIT COMMERCIAL OIL FIRED WATER HEATERS

Precision cut type "L" all copper A.O. Smith manifold kits assure water

flow balance of all units. Without this balance, the full water heating and

storage potential of the system cannot be achieved. Plus, the units with

the higher water flow may have a shortened life. Unions and T & P

valves shown in piping diagrams are not included in the manifold kits.

Dimensions shown are for minimum space occupied by complete

assemblies. Service space in front of units must be added.

DANGER:

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURES AT

FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 11. IF

HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE

BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED

TO FIXTURES.

TWO UNIT MANIFOLD KIT (PART NO. 78692)

2. Check the fuses.

• The oil burner electrical disconnect switch usually contains fuses.

3. The capacity of the heater may have been exceeded by a large demand

for hot water.

• Large demands require a recovery period to restore water

temperature.

4. Colder incoming water temperature will lengthen the time required to

heat water to the desired temperature.

• If the heater was installed when incoming water temperature was

warm, colder water creates the effect of less hot water.

5. Look for hot water wastage and leaking or open hot water faucets.

6. Sediment or lime scale may be affecting water heater operation. Refer

to MAINTENANCE for details.

7. Heater or burner may be dirty.

• Clean all heater flue pipes and flue connector.

• Have burner properly cleaned and readjusted.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 55 56

Comments to this Manuals

No comments

A.O. Smith COF-199 THRU 700A Specifications Page 20

Comments to this Manuals

Related products and manuals for Water heaters & boilers A.O. Smith COF-199 THRU 700A