Crown Boiler TWZ125 Specifications download pdf (Page 25)

XII Service and Maintenance

The following procedure should be performed on an annual basis:

1) Turn off electrical power and oil supply to the boiler.

2) Clean the boiler as follows:

a) Remove vent connector and piping.

b) Remove barometric draft regulator.

c) Remove top jacket panel to gain access to boiler flue collector.

d) Unscrew four wing nuts and remove canopy retaining carriage bolts, lift off the canopy and ceramic fiber sealing strips.

e) Unplug the burner, disconnect the oil lines (if the pump is hard piped), and remove the two 5/16” bolts securing the

burner door. Open the burner swing door.

f) Thoroughly brush boiler flueways from the top and diagonally between casting pin rows. Be careful when brushing the

rear passage not to damage the rear target wall insulation.

g) Vacuum soot and debris from combustion chamber.

h) Check condition of rear target wall insulation, combustion chamber liner, and burner door insulation; replace if

required.

i) Check burner head for signs of deterioration. Clean the head of any deposits.

j) Close burner door, reinstall 5/16” bolts, reconnect fuel oil and electrical lines.

k) Installation of boiler canopy, jacket top panel barometric draft regulator and breeching piping is done in reverse order

of removal. Make sure canopy is sealed tight to the casting; replace ceramic fiber sealing strips as needed. All vent

piping joints must be flue gas leak free and secured with sheet metal screws.

TABLE 3c: RIELLO BURNER CONFIGURATION AND SETUP DATA

TWZ065 TWZ075 TWZ100 TWZ090 TWZ125 TWZ150

TWZ120 TWZ175 TWZ200

BURNER MODEL

40F5 40F5 40F5 40F10 40F10 40F10

STANDARD

DEL DEL DEL. DEL HAGO DEL

NOZZLE

0.60/60A 0.85/60W 1.00/60A 1.25/60B

1.35/45B 1.65/45B

PUMP PRESS (psi)

150 150 150 150 150 150

TURBULATOR

02 41

1.5 2

AIR

SHUTTER SETTING

2.60 2.85 4 3

33.8

DRAFT OVER FIRE

(in w.c.)

MAX. SMOKE

(bacharach scale)

FLUE CO2 (%)

MIN.

11.0 11.0 11.0 11.0 11.0 11.0

MAX

12.5 12.5 12.5 12.5 12.5 12.5

-0.02 -0.02 -0.02-0.02 -0.02 -0.02

#1 #1 #1 #1 #1 #1

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Crown Boiler TWZ125 Specifications Page 25

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