Start-Up Instruction; Shut Down Instruction; Safety Features - Ace Heating Solutions Packaged Storage Water Heater Steam-to-Water System Operating And Maintenance Manual

Start-up Instruction

1 It is assumed that installation is complete and that all connections have been made, including:
electrical, steam, domestic water, instrument air, vents, drains and safety valve discharge lines.
2 If an optional control box is included, make sure the power switch is in the "off" position.
3 Set the temperature controller on the pilot to a minimal water temperature output, following
instruction in the technical data sheet provided (factory does not present).
4 If option is provided, adjust the high limit control 12º to 15ºF higher than the desired hot water
outlet temperature.
5 Ensure the shut-off valve on the bonnet side (heating medium side) is closed.
6 Slowly fill the packaged storage water heater with domestic water, making sure all air is
evacuated prior to start-up.
7 Plant steam, used as the heating medium, is controlled by a pilot operated control valve. The
pilot utilizes upstream steam pressure to modulate the control valve based on the temperature of
the thermostatic element. Steady upstream supply steam pressure is imperative to the
temperature control.
8 If an optional control panel is included, turn the control panel switch to "On" position (the manual
steam supply valve should be closed). The green light should come on. At the same time, it will
energize the solenoid to open the pilot control line to the valve. Make sure the circulator pump is
running. (Please refer to the pump instruction manual for details.)
9 Manually open the main steam shut-off valve upstream of the control valve and SLOWLY allow
steam to pass through the control valve. Continue until the shut-off valve is 100% open.
10 The packaged storage water heater will now function automatically, reacting according to
demand fluctuations and will stabilize once limits are met.
11 Observe the entire system over a period of large demand fluctuations and readjust as
necessary by adjusting the pilot control wheel. (See enclosed technical instruction on the
temperature pilot).
12 After initial start-up, it is recommended to inspect the upstream strainer for any dirt or debris
that may have accumulated. This should be done in accordance with company recommended
safety procedures.
Shut Down Instructions
1 Close the main upstream shut-off valve to the packaged storage water heater.
2 De-energize all electrical power to the packaged storage water heater.
3 Allow the unit to cool down (Approximately 24 hours).
4 Close domestic water inlet and outlet shut-off valves.

Safety Features

1 The pilot-operated steam control valve is designed to fail closed in the event of an over-temp
condition or power failure.
2 The relief valve is designed to relieve the pressure in the packaged storage water heater in the
event the system pressure exceeds its set point.
3 The double safety solenoid (Optional) is designed to dump the domestic water in the shell in the
event that the water temperature exceeds the set point on the high limit control (Optional).
ACE BOILER INC.
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