Addison UHA 150, Installation, Operation & Service Manual

Page: 49 / 62

SECTION 15: R
EPLACEMENT
P
ARTS
41 of 49
15.2 Burner Compartment
15.2.1 Burner Injectors
Remo v e flexible
air duct from spigot
Remo v e
access plate
Remo v e screws and
pull off burner
compartment co v er
V iewing port
for flame probe
V iewing port
for ignition electrode
Flame Probe
Burner
Compartment
Co v er
Rubber Seal
Ignition Electrode
The bu rner compartment is
a sealed compartment.
Follo
w ing any w ork,
re-seal the compartment
w ith the gas pipe r ubb er
seal f u lly in place and all
scre w s fitted and tight.
NOTE:
Flexi b le d u ct only applies
for model UHAS.
MODEL
UHA[X][S]
150
UHA[X][S]
175
UHA[X][S]
200
UHA[X][S]
225
UHA[X][S]
250
UHA[X][S]
300
UHA[X][S]
350
UHA[X][S]
400
Orifice Q u antity 7 8 9 10 11 12 14 14
Natural Gas (G20)
Orifice Marking 43 43 2.25 mm 2.25 mm 2.25 mm 40 40 40
P/N 91930043 91930043 91930225 91930225 91930225 91930040 91930040 91930040
Propane (G31)
Orifice Marking 1.35 mm 1.35 mm 54 54 54 1.45 mm 53 53
P/N 91930135 91930135 91930054 91930054 91930054 91930145 91930053 91930053
Ens u re gas tight fitting of injectors.
Ens u re correct alignment w ith bu rners.
Ens u re all pipe joints are gas tight.