Component Listing - Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual

3.1 Component Listing

1.
User Interface (see Appendix A) - 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"/3" )
3. Return Water From Heating System (In) Return Water From Heating System (In)
page 8) - - Connection supplied at bottom of boiler. page 8) Connection supplied at bottom of boiler.
4.
Low Voltage Terminal Strip Low Voltage Terminal Strip
Connection of all low voltage wiring, including Connection of all low voltage wiring, including
thermostat. See section 8. 8. thermostat. See section
5.
Igniter (see page 8)
6.
Flame Sensor (see page 8)
7. Sight Glass (see page 8) - Permits observation of
burner fl ame.
8.
Burner (see page 35)
9. Heat Exchanger (see page 8)
10.
Condensate Collector
11.
Return Temperature Sensor
12. Drain Valve (see page 12)
13.
Heat Exchanger Ball Valve
14.
Supply Water Outlet to Heating System (Out)
(see pages 8) - Connections supplied for connecting
from bottom of boiler. See section 5.
15.
Vent Temperature Sensor
16. Condensate Drain
a liquid (condensate) as a by-product of combustion.
Condensate must be piped to appropriate drain. See
section 6.
17.
Heat Exchanger Pump Heat Exchanger Pump
18. Gas Shutoff Valve Gas Shutoff Valve
during servicing. See section 7 during servicing. See section 7
19.
Combustion Air Blower Combustion Air Blower
proper quantity of combustion air, receives fuel from proper quantity of combustion air, receives fuel from
gas valve, mixes air and fuel sending mixture to burner gas valve, mixes air and fuel sending mixture to burner
for combustion. for combustion.
3 - COMPONENT LISTING
(see page 7 & 8)
(see page 8) - (see page 8) -
(see page 8)
(not shown)
(see page 8)
(see page 8)
(see page 8) - Boiler produces
(see page 8)
(see page 8) - Fuel supply isolation - Fuel supply isolation
(see page 8) - Delivers - Delivers
20.
Gas (Control) Valve Gas (Control) Valve
proper quantity of fuel to Combustion Air Blower. proper quantity of fuel to Combustion Air Blower.
See section 7. See section 7.
21. High Temperature Supply Switch High Temperature Supply Switch
22.
Low Water Cutoff Low Water Cutoff
quantity of water. Turns off boiler before damage can quantity of water. Turns off boiler before damage can
occur. occur.
23.
Safety Relief Valve
(see (see
supplied, Field installed. See section 5.
24.
High Voltage Junction Box
connection of 120V components. See section 8 8 .
25.
Vent Connector
26.
Gas Connection Gas Connection
27. Wall Hanging Support Bracket
Integral to boiler. Allows wall mounting when used
with supplied wall mounting bracket. See section 4.
28.
Service Switch
29.
Air Vent
30.
Control Module Control Module
31. Lower Jacket Panel
then forward to access.
32.
Transformer
water cutoff.
33. Pressure Test Port
34.
Combustion Analysis Test Port
35.
Return Water Sensor
36.
User Interface -
6
(see page 8) - Delivers
(see page 8) - - Senses inadequate
(see pages 7 & 8) - Factory
(see page 8) - For
(see pages 7 & 8) - See section 6.
(see page 8) - See section 7. - See section 7.
(see page 7) (see page 7)
(see page 7 & 8)
(see page 8)
(see page 7) - Gently pull upward
(see page 8) - Supplies 24V power to low
- (see page 8)
(see page 8)
(see page 7)
- Delivers
(see page 8)
Senses inadequate
(see page 7) -
- (see page 8)