
Gas Valve Replacement Kit
4
COMB STION TEST
1. The installer UST perform a complete com-
bustion check to ensure the following combus-
tion levels are met at high and low input firing
rates and the burner is operating at optimum
conditions.
Table 1: Combustion Settings
The combustion testing and adjustments
must be performed by a qualified installer,
service agency or the gas supplier. All com-
bustion measurements must be perform with
calibrated equipment to ensure proper read-
ings and accuracy.
Failure to perform a complete combustion
test at both high and low input rates may
result in incomplete combustion and the pro-
duction of carbon monoxide, which can
cause severe personal injury, death or sub-
stantial property damage.
2. Test for CO2 or O2 and for CO during high fir-
ing rate. The combustion readings should be
within the range listed in Table 1. The CO level
should not exceed 100 ppm when combustion
is correct. Perform the following procedure to
manually place the burner into high fire.
a. Press the round INSTALLER button. See
Fig. 3.
b. Enter the installer access code “054” by
using the LEFT and RIGHT buttons to
select a digit and the P and DOWN but-
tons to change the digit. Press the OK but-
ton to enter the access code.
c. Press the RIGHT button to highlight the
anual Operation icon then press the
OK button.
d. Press the OK button while the FAN icon is
highlighted to manually fire the burner and
power the CH circulator.
An adequate CH load must be present to dis-
sipate the heat generated during the combus-
tion test. If an adequate CH load is not avail-
able, an indirect water heater can be used to
dissipate the heat by creating a DHW call
which will enable the DHW circulator.
e. Press the LEFT and RIGHT buttons to
adjust the firing rate from 0% to 100%.
Hold down the LEFT or RIGHT button to
rapidly increase or decrease the firing rate.
WARNING
WARNING
NOTICE
Natural Gas Propane
O2 Min. 2.30% 2.70%
O2 Max. 5.30% 4.70%
CO2 Min. 8.80% 10.70%
CO2 Max. 10.50% 12.00%
CO Max. 100 ppm 100 ppm
Manual Operation
Released
O
O
O
CH
CH1
FAN
DHW
SYS
CH2
Fig. 3: Trimax Navigation Buttons