Instructions

PRESTIGE Solo 175 & 250
Service Parts Instructions
11
12. Hand tighten the burner mounting plate nuts to
hold the burner plate in place. Once all mount-
ing nuts are in place, use a wrench to tighten
using an alternating pattern until the gasket is
slightly compressed. See Table 1, page 14 for
torque specifications.
13. Re-assemble the blower onto the burner mount-
ing plate and reconnect the wiring harness con-
nectors. Tighten screws evenly. See Table 1,
page 13 for torque specifications.
14. Re-assemble the gas supply connection and
wire harness to the gas valve. Tighten the union
using two wrenches. See Table 1, page 14 for
torque specifications. Open the external manual
gas valve. Check gas piping for any leaks and
repair if necessary.
15. Reinstall top jacket access panel.
Clean Heat Exchanger (Water side)
1. In case of “Dirty/Black” boiler water, or when
additional piping is installed on the system, it is
recommended to carry out the procedures below
to clean the water side of the heat exchanger.
2. Close isolation valves on the boiler water piping
to isolate the boiler from the heating system.
3. Attach a hose to the boiler drain valve and flush
the boiler thoroughly with fresh water by using
the purge valves to allow water to enter through
the make-up water line to the boiler.
4. Once the boiler heat exchanger has been com-
pletely flushed. Follow instructions provided by
boiler cleaning agent manufacturer to clean and
flush the existing system. Use an approved
inhibitor to protect the boiler and heating sys-
tem. Approved boiler cleaning agents: Fernox
F1 and F3, Sentinel boiler treatment chemicals.
5. After completion of boiler flushing and cleaning
and treatment with inhibitor, perform a combus-
tion test and check flue gas temperatures.
6. Return the boiler and system piping back in to
operation.