B-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
122 of 147
FIGURE 79: MR 212 Valve (2010 - 2030)
T
N
E
V
R
2A0
4
1
12A06
R
Low Fire Adjustment
(loosen locking screw
before adjustment)
High Fire Adjustment Cap
Modulator
(Wire #48 and
#49 or #49A)
TOP VIEW (cover removed)
Inlet Pressure
Outlet Pressure
Tap
Tap
(Burner Pressure)
SIDE VIEW
NOTE:
For high fire adj
u
stment, t
u
rn clock
w
ise to
increase manifold press
u
re; t
u
rn co
u
nter clock
w
ise to
decrease manifold press
u
re.
Содержание 2005
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