ECR International 75 Installation, Operation & Maintenance Manual page 36

• Visual inspection of fl ame through sight glass. Burner
should be fully illuminated. See fi gure 9-5.
• Check expansion tank.
11.2 Annual shut down procedure
• Follow instructions "To Turn Off Gas To Appliance"
boiler is also used to supply domestic hot water. See
section 10.
• Drain system completely and add antifreeze when
heating system is to remain out of service during freezing
weather.
• Drain condensate lines when boiler is to be exposed to
freezing temperatures.
WARNING
!
Following service procedures must be performed
by qualifi ed service agent. Boiler owner shall not
attempt these steps.
WARNING
!
Use gloves when handling refractory to avoid
absorption of crystiline silica a potentially dangerous
compound.
11.3 Annual Examination and Cleaning of Boiler
Components
• Obtain Burner Inspection Kit. See "Parts, Kits and
Optional Accessories" manual.
• Before servicing, turn off electrical power to boiler at
service switch.
• Follow instruction 'To Turn Off Gas to Appliance'. Close
main gas valve.
• Visually inspect through sight glass verify no fl ame is
present.
11 - GENERAL MAINTENANCE AND CLEANING
11-2 Blower Inlet Assembly
unless
A Blower Inlet Housing
B Refractory
C Burner
D Flame Sensor
E Igniter
F Sight Glass
* Inlet Gasket
* Not Shown
36
Burner Assembly
A
B
C
D
E
F