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FIGURE 3-4 Boiler Components 50/75/100 MBH (View from Front of Boiler) As seen on front cover
(28) SAFETY RELIEF
VALVE
(27) SUPPLY WATER
TEMPERATURE SENSOR
& HIGH LIMIT SWITCH
(26) HEAT
EXCHANGER SURFACE
TEMPERATURE SWITCH
BRACKET
(25) COMBUSTION
AIR
BLOWER
(24) GAS (CONTROL)
VALVE
(23) COMBUSTION
ANALYSIS TEST
PORT
(22) VENT
TEMPERATURE
SENSOR
(21) FLUE
COLLECTOR
(20) HIGH VOLTAGE
JUNCTION BOX
(19) TEMPERATURE/PRESSURE
GAUGE
(18) SUPPLY WATER TO
HEATING SYSTEM (OUT)
3 - COMPONENT LISTING
(1) GAS (CONNECTION)
SHUT OFF VALVE
(17) Jacket Latch
(16) CONDENSATE
TRAP
9
(2) VENT CONNECTOR
(3) COMBUSTION
AIR INLET
(15) CONDENSATE
NOTE:
See Section 5
For Piping
Instructions
(4) IGNITER
(5) FLAME
SENSOR
(6) SIGHT GLASS
(7)FLUE AIR
MIXTURE
PRESSURE
TEST PORT
(8) USER
INTERFACE
(9) BOILER
CONTROL
MODULE
Fuse and
Holder
(10) HEAT
EXCHANGER
(11) ASME
PLATE
(29) Pump Relay
(12) LOW VOLTAGE
TERMINAL STRIP
(13) RETURN WATER
TEMPERATURE
SENSOR
(14) RETURN WATER
FROM HEATING
SYSTEM (IN)
DRAIN
P/N 240011340, Rev. C [09/07/2016]
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