Trane IntelliPak 2 Series, Инструкция по установке, эксплуатации и обслуживанию

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156 RT-SVX24Q-EN
N No otte e:: Bridging between the unit main supports may
consist of multiple 2 x 12 boards or sheet metal
grating.
Arbitrarily adjusting the outside air dampers to open
fully when the return air dampers are closed or; failing
to maintain the return air pressure drop with the
outside air dampers when the return air dampers are
closed, can overload the supply fan motor and cause
building pressurization control problems due to
improper CFM being delivered to the space.
The outside air/return air damper linkage is connected
to a crank arm with a series of holes that allows the
installer or operator to modify the amount of outside
air damper travel in order to match the return static
pressure.
Refer to Table 55, p. 158 for the equivalent return air
duct losses that correspond to each of the holes
illustrated in
Figure 122, p. 157 .
To Adjust the Outside Air Damper Travel
1. Drill a 1/4" hole through the unit casing up stream
of the return air dampers. Use a location that will
produce an accurate reading with the least amount
of turbulence – several locations may be necessary,
then average the reading.
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w p prro op pe err
llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d.. V Ve erriiffy y tth ha att n no o
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IIm mp po orrtta an ntt:: HIGH VOLTAGE IS PRESENT AT
TERMINAL BLOCK OR UNIT
DISCONNECT SWITCH.
2. Close the disconnect switch or circuit protector
switch that provides the supply power to the unit
terminal block or the unit mounted disconnect
switch.
3. Turn the 115 volt control circuit switch and the 24
volt control circuit switch to the On position.
4. Open the Human Interface access door located in
the unit control panel, and press the SERVICE
MODE key to display the first service screen. Refer
to the latest edition of the applicable programming
manual for applications for the SERVICE TEST
screens and programming instructions.
5. Use tables in “Voltage Imbalance,” p. 105 to
program the following system components for
operation by scrolling through the displays;
• Supply Fan (On)
• Variable Frequency Drive (100% Output, if
applicable)
• RTM Occ/Unocc Output (Unoccupied)
• Outside Air Dampers (Closed)
6. Once the configuration for the components is
complete, press the NEXT key until the LCD
displays the “Start test in __Sec.” screen. Press the
+ key to designate the delay before the test is to
start. This service test will begin after the TEST
START key is pressed and the delay designated in
this step has elapsed. Press the ENTER key to
confirm this choice.
7. Press the TEST START key to start the test.
Remember that the delay designated in step 6 must
elapse before the fan will begin to operate.
8. With the outside air dampers fully closed and the
supply fan operating at 100% airflow requirements,
measure the return static pressure at the location
determined in step 1.
9. Press the STOP key at the Human Interface Module
in the unit control panel to stop the fan operation.
W WA AR RN NIIN NG G
L Liiv ve e E Elle eccttrriicca all C Co om mp po on ne en nttss!!
F Fa aiillu urre e tto o ffo ollllo ow w a allll e elle eccttrriicca all ssa affe etty y p prre ecca au uttiio on nss
w wh he en n e ex xp po osse ed d tto o lliiv ve e e elle eccttrriicca all cco om mp po on ne en nttss cco ou ulld d
rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
W Wh he en n iitt iiss n ne ecce essssa arry y tto o w wo orrkk w wiitth h lliiv ve e e elle eccttrriicca all
cco om mp po on ne en nttss,, h ha av ve e a a q qu ua alliiffiie ed d lliicce en nsse ed d e elle eccttrriicciia an n
o orr o otth he err iin nd diiv viid du ua all w wh ho o h ha ass b be ee en n p prro op pe errlly y ttrra aiin ne ed d
iin n h ha an nd dlliin ng g lliiv ve e e elle eccttrriicca all cco om mp po on ne en nttss p pe errffo orrm m
tth he esse e tta asskkss..
W WA AR RN NIIN NG G
R Ro otta attiin ng g C Co om mp po on ne en nttss!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n rro otta attiin ng g cco om mp po on ne en nttss ccu uttttiin ng g a an nd d sslla assh hiin ng g
tte ecch hn niicciia an n w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss
iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w p prro op pe err
llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d..
10. Open the field supplied main power disconnect
switch upstream of the rooftop unit. Lock the
disconnect switch in the “Open” position while
working on the dampers.
N No otte e:: Gravity will cause the damper to close.
Support or secure the damper blades while
removing the actuator to prevent unexpected
damper rotation.
11. Compare the static pressure reading to the static
pressure ranges and linkage positions in Table 55,
p. 158 for the unit size and operating CFM.
Relocate the outside air/return air connecting rod to
balance the outside air damper pressure drop
U Un niitt S Stta arrttu up p