124
RT-SVX072A-EN
pressures for both low and high fire are within
specified range on
.
14. Adjust the User interface to operate the furnace at
low firing rate (1%) and 1st Stage. Recheck O2 (or
CO2) and CO values.
15. Press the STOP key in the top right corner of the
User interface screen and remove manual overrides
to stop the system operation.
Adjusting P0, P1, and P2 via the Siemens
LME7 Built-in Display
1. While in standby (OFF), press and hold the A button
and either the + or - button for more than five
seconds until “OFF” starts blinking.
2. Give the LME7 a call for heat. The LME7 will
proceed to start the burner. After prepurge is
complete, the LME7 will slow the blower down to
the preset ignition speed (P0).
3. At this point, the LME7 will alternately display P0
and a three-digit number. The three-digit number is
the setting of the ignition speed P0 divided by 10.
For example, if the display alternately displays P0
and 200, this means that the ignition speed is
currently set for 2000 RPM.
4. To adjust the ignition speed, press and hold the A
button while simultaneously pressing the + or -
button to increase or decrease the speed
respectively. The speed of the blower will change in
real time. Once the desired ignition speed P0 has
been set, press the info button.
5. The startup of the burner will continue. The burner
will light off and establish flame. Once the burner
has lit off, it will drive to the preset low fire speed
(P1).
6. The LME7 will then alternately display P1 and a
three-digit number that is representative of the low
fire speed divided by 10. To adjust the low fire
speed, press and hold the A button while
simultaneously pressing the + or - button to
increase or decrease the speed respectively. The
speed of the blower will change in real time. Once
the desired low fire speed P1 has been set, press
the info button.
7. The LME7 will immediately drive to the preset high
fire speed P2.
8. The LME7 will then alternately display P2 and a
three-digit number that is representative of the high
fire speed divided by 10. To adjust the high fire
speed, press and hold the A button while
simultaneously pressing the + or - button to
increase or decrease the speed respectively. The
speed of the blower will change in real time. Once
the desired high fire speed P2 has been set, press
the info button.
9. Press the + and - buttons together (escape) to return
to normal operation. The PWM blower will now
respond to the external load control signal being
supplied to the LME7.
N
No
otte
e:: For more information contact Large Commercial
Technical Support.
Figure 98.
Gas Heat Manual Override screen — 2–
stage
Table 55.
Recommended manifold pressures and O2 levels for furnace operation — natural gas
Burner size
Low Fire (1%)
High Fire (100%)
O2 (%)
Manifold
(in. w.c)
O2 (%)
Manifold
(in. w.c)
235 MBH 2-stg
6.5 – 7.0
0.15 - 0.25
2.8 – 3.2
1.6 – 1.7
350 MBH 2-stg
5.5 – 6.0
0.35 – 0.45
2.8 – 3.2
1.5 -1.6
500 MBH 2-stg
4.5 – 5.0
0.75 -0.85
2.8 – 3.2
3.0 – 3.2
500 MBH Mod
9.0 – 10.0
0.15 - 0.25
2.8 – 3.2
3.0 – 3.2
800 MBH 2-stg
(a)
5.8 – 6.1
.40 – .41
3.0 – 3.3
15.5 – 1.6
800 MBH Mod
(a)
11.0 – 12.0
.01 – .02
3.0 – 3.2
1.5 – 1.7
850 MBH 2-stg
5.5 - 5.7
0.44 – 0.46
2.8 – 3.2
1.7 – 2.0
850 MBH Mod
11.9 – 12.3
0.01 – 0.02
2.8 – 3.2
1.8 – 2.0
Содержание IntelliPak 1
Страница 134: ...134 RT SVX072A EN Figure 108 Dry bulb changeover map T Tr ra an ne e S St ta ar rt tu up p C Ch he ec ck kl li is st t ...
Страница 161: ...RT SVX072A EN 161 N No ot te es s ...
Страница 162: ...162 RT SVX072A EN N No ot te es s ...
Страница 163: ...RT SVX072A EN 163 N No ot te es s ...