ECR 075 97gb, Installation, Operation & Maintenance Manual

Page: 7 / 80

7
3.1 Component Listing
1.
User Interface - Displays information regarding
boiler condition. Allows adjustment of boiler operating
parameters. NOTE: Does not replace thermostat used
to control central heating space.
2.
Combustion Air Inlet (2" PVC) (see Section 6)
3.
Return Water From Heating System (In) 1-1/4"
NPT - Connections supplied to connection top and/or
bottom of boiler. See Section 5.
4.
Low Voltage Terminal Strip Connection of all low
voltage wiring, including thermostat. See section 8.
5.
Igniter
6. Flame Sensor
7. Sight Glass Permits observation of burner flame.
8. Burner
9. Heat Exchanger
10. Condensate Collector
11.
Return Water Temperature Sensor
12. Drain Valve
13. Heat Exchanger Ball Valve
14. Supply Water Outlet to Heating System (Out)
1-1/4"NPT Connections supplied for connecting from
either top or bottom of boiler. See section 5.
15. Vent Temperature Sensor
16. Condensate Drain ) Boiler produces a liquid
(condensate) as a by-product of combustion. Condensate
must be piped to appropriate drain. See section 6.
17. Heat Exchanger Pump
18. Gas Shutoff Valve - Fuel supply isolation during
servicing. See section 7
19. Combustion Air Blower Delivers proper quantity of
combustion air, receives fuel from gas valve, mixes air
and fuel sending mixture to burner for combustion.
20.
Gas (Control) Valve Delivers proper quantity of
fuel to Combustion Air Blower. See section 7.
21. Supply Water Temperature Sensor and High Limit
Switch
22. Low Water Cutoff Senses inadequate quantity of
water. Turns off boiler before damage can occur.
23. Safety Relief Valve Factory supplied, Field installed.
See section 5.
24. High Voltage Junction Box For connection of 120V
components. See section 8.
25. Vent Connector See section 6.
26. Gas Connection (See section 7.
27. Wall Hanging Support Bracket (see page 7) -
Integral to boiler. Allows optional wall mounting when
used with supplied wall mounting bracket. See section 4.
28. Auxiliary Power Outlet Convenience outlet for
condensate pump or service. Controlled by Service
Switch (29)
29. Service Switch
30. Air Vent
31. Central Heating Pump Circuit Breaker 5 amp
circuit breaker protects control module.
32. Boiler Control Module
33. Internal Access Panel (see page 9) - Gently pull
upward then forward to access control module.
Removable for access to internal components of boiler.
34. Central Heating Pump Relay (see page 9)
35. Transformer Supplies 24V power to low water cutoff.
36. Air Pressure Switch (not shown)
37.
Test Port - (see page 8)
38. Combustion Analysis Test Port - (see page 8)
3 - COMPONENT LISTING