V. Operation
A.System
1.Follow boiler installation instructions to place boiler in operation.
2.Turn aquastat dial clockwise to desired setting.
a.An initial setting of 120°F is recommended.
b.Turning the knob clockwise from "100" position will cause an audible click indicating the desired temperature is higher than the current tank water temperature.
B.Sequence of Operation
1.Aquastat senses stored water temperature drops below desired setting.
a.Aquastat contacts close to start domestic hot water circulator and energize relay.
b.Normally open contacts close to initiate boiler ignition sequence.
c.Domestic hot water priority only: normally closed contacts open to interrupt space heating.
2.Aquastat satisfied
a.Aquastat contacts open, turning off domestic hot water circulator and
b.Normally open contacts open, stopping boiler operation.
c.Domestic hot water priority only: normally closed contacts close, returning boiler control to space heating.
C.Water Temperature Adjustment
1.The aquastat controls the maximum water temperature in the tank. It's differential is fixed at 5°F. It's maximum setting is 160°F.
2.For the most energy efficient operation, adjust aquastat for the minimum water temperature necessary to meet domestic hot water needs.
3.After the water heater completes a
a.Adjusting to a lower temperature setting will not immediately affect water temperature. Draw sufficient water or allow the water heater to sit until a
b.Adjusting to a higher temperature may not immediately affect water temperature. If a heat- up cycle begins, go to step 3. If a
D. To
1.Turn power off to the Alliance.
2.Follow boiler operating instructions to turn off boiler.
WARNING
Never operate water heater with temperatures in excess of 200°F. Severely reduced water heater life will result.
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