Page No 24 of 52 Reznor, Photon, Installation Manual, EN 2024-01, D301310 Iss 5
C
If the chamber insulation has been replaced
the organic binders will burn off during the
first few minutes of operation. This will result
in a temporary increase in CO and CO2
readings.
6. Keep appliance running at full rate until
completely stabilised and recheck %CO2.
If necessary make further adjustments to
throttle before proceeding.
7. For models 10-100, slacken screw in gas
valve outlet pressure test point and attach
low range pressure gauge. Note, offset is a
vacuum reading.
Gas pressure test points Photon 10-70
Gas pressure test points for Photon 100
Gas pressure test point for Photon 120
To set low fire adjust thermostat to call for
minimum heat (1V):-
• Adjust offset screw to obtain nominal
offset pressure +/- 5 Pa for models 10-100.
(see Combustion Data for details). Note
that there is no outlet pressure test port on
the model 120 gas valve.
• Observe the CO/CO2 readings and adjust
offset screw if needed to obtain nominal
low fire %CO2 (+/-0.1%CO2).
• Return heater to high fire (10V) and
recheck high fire %CO2 value. If necessary
make any final adjustments to the throttle.
• Disconnect pressure gauges and tighten
screws in gas valve test points.
• Remove heat demand and allow heater to
shut-down.
• Reconnect thermostat connections if
bypassed for commissioning.
Commissioning - hand over
Upon full and satisfactory completion of
commissioning, a record of commissioning
information should be left with the person
responsible for the heater. The commissioning
engineer must ensure that the user is familiar
with the safe and efficient use of the heater,
detailing the function of all controls and main
components.
The user should be made aware of the
following in particular: -
(i) Lighting, shutdown, and operational
information.
(ii) Safety features, data plate, and labelling.
(iii) The requirement for regular inspection
- especially if the heater is within a more
demanding environment - and the need for
regular servicing carried out by a suitably
qualified person.
Inlet test
point
Inlet test point
Note: there is not
an outlet test point
on the Photon 120
Outlet
test point
Inlet test
point
Outlet
test point
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