MACH
®
C750-C1050 Outdoor Boilers
10
3
Maintenance
The MACH
®
outdoor boiler requires maintenance as described in MACH
®
Installation & Owner’s Manual
(latest edition) as well as the additional maintenance listed below.
General Warning
These additional maintenance items should be performed monthly.
1. Check for flue gas recirculation into the air inlet. Flue gas recirculation indicates that the vent is
not installed properly for local conditions.
2. Check for freezing of the condensate lines. Frozen lines will result in boiler malfunction. Operation
of the boiler in cold temperatures may require the use of heat trace lines for the boiler condensate
trap and drain.
3. Check for inlet air box, vent and safety relief valve obstructions due to outdoor debris such as but
not limited to, leaves, insects, snow, branches and other blockages.
