7500-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
44 of 143
FIGURE 27: Location of Side Orifice
11.6 Line Pressure Test - Leak Testin
g
The air t
u
rno
v
er
u
nit and its indi
v
id
u
al sh
u
t-off
v
al
v
e
m
u
st
b
e disconnected from the gas s
u
pply piping
systems d
u
ring any press
u
re testing of that system at
test press
u
res in excess of 1 PSIG (68.9 m
b
ar). The
air t
u
rno
v
er
u
nit m
u
st
b
e isolated from the gas s
u
pply
piping system
b
y closing its indi
v
id
u
al man
u
al gas
v
al
v
e that is located immediately
u
pstream of the
safety sh
u
t-off gas
v
al
v
e.
Содержание 7500 136
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Страница 33: ...SECTION 6 LIFTING AN AIR TURNOVER UNIT 21 of 143 FIGURE 10 Lifting an Air Turnover Unit Base Section...
Страница 36: ...7500 SERIES INSTALLATION OPERATION AND SERVICE MANUAL 24 of 143 FIGURE 12 Air Turnover Unit Sections Schematic...
Страница 67: ...SECTION14 ELECTRICAL 55 of 143 FIGURE 38 Wiring Diagram Key...
Страница 115: ...SECTION 15 SEQUENCE OF OPERATION 103 of 143 FIGURE 83 Wiring Subbase and Sequence Chart for RM7897 Burner Control Module...
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