4
P/N 240011775 Rev. A [02/02/17]
HEAT EXCHANGER CLEANING INSTRUCTIONS
A - Installer Level Parameters
Parameters
P17
to
dF
(error code history) must only be modified
by a qualified installer.
To prevent unwanted settings, some parameter settings can only
be changed after special access code
0012
is entered.
• Press the two Menu buttons
simultaneously and then
(+) button until the symbol
flashes on the menu bar.
• Select the INSTALLER menu using the
button.
"
CODE
" appears on the display.
• Use (-) or (+) button to input the installer code "
0012
".
•
Confirm using
button, "
P1
" is displayed with "
1
"
flashing.
• Press
button a second time, the value will appear
and flashes, for example [80°C (176°F)].
•
Change the value by pressing the [
-
] or [
+
] button. [In
this example using [
-
] button to change the value to 60
ºC (140 °F).]
•
Confirm the value with the
button, “
P1
” is
displayed with 1 flashing. Button, “P1” is displayed with 1
flashing. If necessary, set other parameters by selecting
them using the (
-
) or (
+
) button.
• Press
button 2 times to return to current operating
mode.
FIGURE 5 - Installer Level Parameters
Natural Gas
Propane
Venturi
Nozzle
Venturi
Nozzle
in
mm
in
mm
in
mm
in
mm
1
³
/
₁₆
30
⁷/₃₂
5.3
1.18
30
⁵/₃₂
4
FIGURE 6 - Combustion Air Sample Ports
B - Boiler has two dedicated built in test ports.
See Figure 6.
One connection port is connected to exhaust flue (
A
), and allows
monitoring of the quality of combustion products and combustion
efficiency.
Other is connected to combustion air intake (
B
), used to check for
recycling products for combustion.
The following can be measured at exhaust flue test port:
• temperature of combustion products
• oxygen (O
2
) or carbon dioxide (CO
2
) concentration;
• carbon monoxide (CO) concentration.
Temperature of combustion air must be measured on air intake
test port (
B
) by inserting measurement sensor approximately
3-3/16" (80.00 mm) (
C
).
