Install Instructions

1
Prestige Trimax 250
Ignition Kit - Installation Instructions
1.1. Applicability
Prestige boilers with “PT”-prexed serial number, as
indicated on data plate.
Kit Part Number Model
PTRKIT305 PT 250
Table 1 - PT Ignition Kit Numbers
1.2. Purpose
This kit (see Fig. 3 for details) replaces the existing TriMax
control module, the igniter and wiring, the internal
venting tube and the heat exchanger insulation.
1.3. Initial tasks
Conrm the replacement kit is appropriate for the boiler
to be worked on (see Table 1).
Write down all the appliance settings, including the
cascade settings (if the boiler is in a cascade) for reference
before bringing any change to the appliance. A reference
table is provided on the last page of this document.
1.4. Boiler preparation
1.4.1 Required Tools and Material
• Screwdriver, at head
• Screwdriver, cross head
• 10 mm socket/wrench
• Wrench, Torx 20
• Flue gas analyzer
1.4.2 Preparation Procedure
1. Turn the boiler o by pressing the on/o power
switch.
2. Allow boiler to cool down.
3. Disconnect electrical power at the external electric box
• Avoid electrical shock by disconnecting the
electrical supply prior to performing any operation
on the internal parts of the boiler.
DANGER
DANGER
• Before any operation on the internal components
of the appliance, allow the appliance to cool
down to room temperature. Some components
can be very hot.
• Failure to comply will result in substantial property
damage, serious injury, or death.
4. Shut o the gas supply to the boiler at the main manual
shut o valve.
5. Remove boiler front panel as follows:
• Remove the thumb screw along the upper
edge of the unit.
• Lift the panel up and tilt back slightly to remove
the front panel.
6. Slide left and right tabs of control panel inward and
lower control panel. See Fig. 1.



Fig. 1 - Opening and Lowering the Control Panel
Retaining tabs
Fig. 2 - Opening the Retaining Tabs
Revision Date: 5/4/2020 2020-56 Prestige Trimax 250 Ignition Kit