Start-Up; Shutdown - DeDietrich MCA Pro 45 Installation And Service Manual

Initial start-up
The heating contractor must perform the initial start-up
and explain the operation of the system.
The operation of the boiler control must also be
explained to the system operator/ultimate owner by the
heating contractor. Refer to literature packaged with
boiler control.
Necessary preparations prior to initial start-
up, your contractor will:
1. Check for water on the floor from the discharge
pipe or the pressure relief valve or any other pipe,
pipe joint, valve or air vent.
If pressure relief valve is discharging, the
contractor will locate the source of the problem and
take corrective measures. Never cap or plug end of
pressure relief valve discharge pipe. Ensure correct
system (water) pressure.
2. Ensure fresh combustion air supply vents to boiler
room are open and unobstructed. Nothing must
obstruct the flow of combustion and ventilation air.
3. Open main fuel supply valve.
4. Activate the system. Ensure power supply is
activated and then activate system power switch.
Your heating system is now ready for operation.
Shut-down
Shut-down procedure
1. Deactivate system power switch.
2. Deactivate main power supply to boiler and control.
3. Close main fuel supply valve.
We recommend that you contact your heating
contractor prior to and after an extended shut-down
period. In this manner, the appropriate precautions,
i.e. system freeze-up protection or heat exchanger
maintenance, can be taken.
WARNING
Do not attempt to start the burner if excessive fuel
has accumulated in the combustion chamber.
Do not open the boiler door or clean outs when the
boiler is hot.
10

Start-up

Operation
Refer to "Lighting and operation instructions", page 11.
The boiler control regulates operation of the heating
system automatically in conjunction with the
indoor/outdoor control and any programmed settings (if
applicable).
Changes to the settings or programming can be made
according to separate instructions provided with the
boiler control.
For optimum operation
Keep the boiler and the boiler room clean and free of
dust and dirt.
Ensure proper system pressure by occasionally
checking pressure gauge.
Allow a qualified heating contractor to service and
maintain your heating system on a yearly bases.
Neglected maintenance impacts on product warranty;
regular cleaning and maintenance ensures clean,
environmentally friendly and efficient operation.
We recommend a maintenance contract with a qualified
heating contractor.
If you require assistance finding a qualified heating
contractor, please contact your local Sales
Representative or DDR Americas Inc.
MCA Pro 45/65/90/115
MCA-Pro ISM Rv.4.1 2/2017