
Burner Head Replacement Kit
for PRESTIGE SOLO 399
3
For the reassembly process do not use adhe-
sives on ANY gasket surface.
9. With the new gasket in place attach the new
burner head to the burner mounting plate,
using the 8 screws supplied in the kit.
10. Re-insert the burner plate and burner assem-
bly onto the heat exchanger body. Carefully
align the burner assembly and ignitor with
the combustion chamber insulation to avoid
insulation damage, as shown in Fig. 2.
11. Hand tighten the 10 mm nuts to hold the
burner assembly in place.
12. Using a wrench tighten each nut until gasket
is slightly compressed.
Do not over tighten. Pinching or tearing of the
burner plate gasket may occur causing the
possible escape of combustion gases from the
combustion chamber resulting in death, seri-
ous injury or substantial property damage.
13. Re-install the blower,venturi and gas valve
assembly by reconnecting the two electrical
quick connects on blower. Re-attach and
tighten the assembly to the burner mounting
plate using the four 10 mm nuts removed in
step 6.
14. Re-attach the ignition cable and the ground
wire to the ignitor.
15. Reconnect the solenoid wiring to the gas
valve. As shown in Fig. 4
16. Reconnect and tighten the gas pipe union
before placing the PRESTIGE unit back
into operation. Check and test all gas con-
nections for leaks. Repair leaks if found.
Do not check for gas leaks with an open flame.
Use a bubble test. Failure to check for gas
leaks can cause severe personal injury, death
or substantial property damage.
17. Turn on gas supply to the inlet of the unit at
the external main manual shutoff valve to
the unit.
18. Turn power to the unit “ON”. The unit is
now ready to be placed back into service.
19. It is recommended that the installer per-
forms a complete combustion test to ensure
the combustion levels, in Table 1. are met at
HIGH fire and the burner is operating at
optimum conditions.
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 high input rate may result in incom-
plete combustion and the production of car-
bon monoxide, which can cause severeper-
sonal injury,death or substantial property
damage.
WARNING
WARNING
WARNING
WARNING
NOTICE
Table 1: Recommended Combustion Levels
Natural Gas Propane
O2 Min. 2.30% 3.70%
O2 Max. 4.50% 5.20%
CO2 Min 9.30% 10.00%
CO2 Max 10.50% 11.00%
CO Max 100 ppm 100 ppm