8
P/N 240010943, Rev. C [09/07/2016]
3 - COMPONENT LISTING
3.1
Component Listing - Refer to diagrams on
following pages.
Temperature Pressure Gauge
(Field Installed)
User Interface -
Displays information regarding
boiler condition. Allows adjustment of boiler
operating parameters.
NOTE:
Does not replace
thermostat used to control central heating space.
Supply Water Temperature Senso
r
Combustion Air Blower
Delivers proper quantity
of combustion air, receives fuel from gas valve,
mixes air and fuel sending mixture to burner for
combustion
Sight Glass -
Permits observation of burner flame.
Heat Exchanger Strap and Buckle
(2)
Transformer
DHW Pump, General Boiler Pump, CH Pump and
Blower Relays
Heat Exchanger
ASME Plate
Flue Collector
Return Water Temperature Sensor
Leveling Feet
(4)
Safety Relief Valve
Factory supplied, Field
installed. See section 5.
Burner
not shown (see page 3)
Spare Fuse
not shown (see page 3)
Flue Gas Test Port
Combustion Air Test Port
39
38
37
35
34
33
32
31
30
29
28
27
26
24
25
36
40
41
Combustion Air Inlet (4")
See section 6.
Vent Connector (4")
See section 6.
Gas Supply
(1" NPT)
Return Water From Heating System - In,
(1
¼
" NPT)
See section 5.
Gas Shutoff Valve
Fuel supply isolation during
servicing. See section 7.
Gas (Control) Valve
Delivers proper quantity of fuel
to Combustion Air Blower. (Not shown) See section 7.
Igniter
Flame Sensor
High Voltage Junction Box
For connection of 120V
components. See section 8.
10 Amp Breaker
Low Voltage Terminal Strip
Connection of all low
voltage wiring, including thermostat.
Wire Knockouts
Boiler Control Module with Spare Fuse
Heat Exchanger Surface Temperature Switch
(located behind control panel)
Vent Temperature Sensor
Condensate Drain Right or Left Option
Condensate must be piped to appropriate drain. See
section 6.
Drain Valve
Condensate Trap - Right or Left Option
Boiler
produces a liquid (condensate) as a by-product of
combustion. (See page 33)
Control Tee (Field installed)
Low Water Cutoff (LWCO)
Supply Water Outlet to Heating System - Out,
(1
¼
" NPT)
See section 5.
Manual Reset Secondary Temperature Limit
Control
(Optional Field Installed)
Optional Air Filter
1
13
23
22
21
20
19
18
17
15
7
6
5
4
3
2
16
14
11
10
9
8
12