Fantech MUAS 1600, Руководство по установке

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Makeup Air Controller and System Startup:
Prior to beginning the setup and startup procedure, verify that the
makeup air system is completely installed and wired, and verify that the
compensated exhaust system is completely installed and wired.
a. Install a clean panel filter into the makeup air system’s filter cassette.
b. Energize the power circuits to;
• Makeup air fan.
• Transformer. A power indicator and heart pulse LED will illuminate
when the FMAC is energized and ready for programming.
• Electric heater (if included).
• The compensated exhaust system.
c. Operate the compensated exhaust fan on high speed.
d. Press “HI” Button on makeup air controller.
e. Operate compensated exhaust fan on low speed.
f. Press “LO” Button on makeup air controller.
g. Operate the compensated exhaust fan at high speed and adjust the
makeup air fan controller “HT” trim pot to produce the desired CFM
from the makeup air fan. If the desired max CFM is not known; just set
the pot to max at this point. You will have an opportunity to fine tune
later.
h. Operate the compensated exhaust fan at low speed and adjust the
makeup air fan controller “LT” trim pot to produce the desired CFM
from the makeup air fan. If the desired min CFM is not known; just set
the pot to min at this point. You will have an opportunity to fine tune
later.
The FMAC is now ready for tuning.
Once the estimated required CFM of makeup air has been set it is time
to verify the house is correctly balanced.
During setup and balancing it is necessary that all of the build-
ing's exterior openings are tightly closed. Openings include
windows, doors, flue dampers, etc. Also, de-energize any
systems that employ exhaust or supply air communication with
the outdoors. Such systems include clothes dryers, heating ap-
pliances, HRV's or ERV's, and bathroom ventilation fans.
Energize both the makeup air system and the compensated
exhaust system. Operate the compensated exhaust system's fan
on high speed.
Adjust the exhaust makeup air system airflow by following one of the fol-
lowing two methods:
1. Using a pressure differential gauge (either digital or analog, as used
for blower door testing), measure the house pressure with respect to
the outdoors across a door or window. If the house pressure is posi-
tive with respect to the outdoors, slow down the exhaust makeup air
fan using the high speed trim pot "HT". If the house pressure is nega-
tive with respect to the outdoors, speed up the exhaust makeup air
fan using the high speed trim pot "HT". Repeat this procedure with the
compensated exhaust fan on low speed and using the "LT" trim pot.
If a slightly positive or negative (recommended no more than
5 Pa [0.02" w.g.] indoor pressure is desired, such a scheme can
be employed by this method, balancing to the desired pressure
scheme.
After adjusting the high and low speed trim the first time, repeat the pro-
cedure as necessary until the system automatically operates sufficiently
according to the desired pressure scheme at low, high and all intermedi-
ate speeds.
2. If a pressure differential gauge is not available, slightly open a window
approximately 1/2" (12mm) in the center of a building wall and check if
the airflow is moving in or out. This can be done by feel, or by using a
light piece of tissue or paper, or one could use an anemometer. If the
flow is going out, the house is under positive pressure and the exhaust
makeup air fan needs to be slowed down using the high speed trim pot
"HT". If the airflow is coming in, the house is under negative pressure
and the exhaust makeup air fan speed needs to be increased using the
high speed trim pot "HT". Repeat this procedure with the compensated
exhaust fan on low speed and using the "LT" trim pot. With both the
"HT" and "LT" trim pots adjusted the air pressure in the house will be
stabilized throughout the compensated exhaust fan range.
The FMAC is now ready for service. At this point the makeup air system
is controlled by the FMAC. As the exhaust fan speed is changed depend-
ing on use, the makeup air fan will sense the current draw and supply the
proper amount of filtered fresh air into the house to compensate for the
exhaust air. If the optional electric heater is installed, the supply air will
be warmed to the desired set point.
Figure 4. FMAC Circuit Board