Thermal Solutions APEX APX425C Installation, Operating And Service Instructions page 138

13
Service Parts
Key
Description
No.
Replacement Heat Exchanger Assembly (includes bare
heat exchanger, supply and return water temperature
sensors, air vent valve and water gaskets)
1A Air Vent Valve
1B Supply Water Temperature Sensor / High Limit Sensor
1C Return Water Temperature Sensor
1D Flue Temperature Sensor
Replacement Thermal Link and Rear Insulation Disc Kit
1F
(includes thermal link, disc, hardware, and instructions)
Replacement Rear Insulation Disc Kit (includes disc,
1G
hardware, and instructions)
Flue Exit Gasket Replacement Kit (includes gasket and
1H
dielectric grease)
1J 4 in. Flue Collar Adapter
1K Temperature and Pressure Gauge (not shown)
Safety Relief Valve (not shown)
1L
Alternate Safety Relief Valve Kit (not shown, includes safety
relief valve and temperature and pressure gauge)
1M Boiler Drain Valve, 3/4 in. NPT (not shown)
Key
Description
No.
Replacement Burner Kit (includes burner, burner gasket,
1N
and hardware)
Replacement Burner Door Kit (includes door with
inner and outer seals, gaskets for sensor and igniter,
1O
insulation, and thermostat; does not include igniter or
flame sensor)
1P Burner Door Insulation Kit (WARNING: Contains RCF)
Replacement Flame Sensor Kit (includes sensor, gasket,
1Q
and hardware)
Replacement Igniter Kit (includes igniter, gasket, and
1R
hardware)
Replacement Gas/Air Duct Kit (includes duct, gaskets,
1S
and hardware)
1T Burner Gasket
1V Burner Door Thermostat with Manual Reset
1W Burner Door Hex Flange Nut, M6 x 1.0 mm (6 per boiler)
138
(continued)
Heat Exchanger Components
Burner Components
APEX Installation, Operating, & Service Instructions
Part Number
APX425C APX525C APX625C APX725C APX825C
109102-01 109103-01
108760-01
109202-01
107503-01
109109-01
104998-01
105651-01
104501-01
109203-01
105894-01
50 PSI: 109039-01
80 PSI: 104200-01
100 PSI: 104201-01
108709-01
Part Number
APX425C APX525C APX625C APX725C APX825C
104988-01 104990-01
104992-01
105650-01
103339-01
103005-01
104994-01 106510-01
107500-01
107413-01
101724-01
109104-01 109105-01
104502-01
N/A
109221-01
60 PSI: 109222-01
104991-01
104993-01
105674-01
103310-01
103308-01
104996-01
109219-01
106308-05 - 3/23