S&P MDX-ES24VK, Инструкция по установке, эксплуатации и обслуживанию

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DUCTING
All ducting and fresh air intake construction/location must comply with local and national building codes. Do not
locate fresh air intakes near contaminant sources (ex: dryer exhaust vent, garbage, etc). Connect the ductwork to
the wall cap and HVAC return duct with screws, cable ties, worm clamps, and rated tape as necessary. Ensure that
the ductwork is properly connected to a properly sized, low restriction fresh air intake with weather hood and insect
screen.
S&P recommends round insulated rigid ductwork for best air and sound performance. Round
flexible ductwork is acceptable, but ensure that it is pulled tight to reduce losses. Keep the length of
duct and number of elbows to a minimum for best air and sound performance. Insulated ductwork
will minimize building heat loss/gain and reduce the potential for condensation.
The ducting from the HVAC unit fan to the outside of the building has a strong effect on the air flow, noise and energy
use of the fan. Use the shortest, straightest duct routing possible for best performance, and avoid installing smaller ducts
than recommended. Insulation around the ducts can reduce energy loss and inhibit mold growth.
Ductwork connections and penetrations should be sealed with duct tape, duct fast-clamps, or caulk (available through
your local distributor) to create an air-tight path from the building exterior to the ventilated space.
WIRING
CAUTION: Ensure that power is turned off and locked out before making any wiring connections.
The MDX-ES24VK operates from a standard 24V 60Hz AC electrical supply. There are multiple
wiring scenarios available depending on the installer preferences. The diagrams below show 3 common scenarios
where the ES24V is connected either directly to the HVAC unit transformer or an auxiliary transformer and the
MD is connected either directly to the ES24V damper terminals or to the ES24V damper
terminals through a SPST, N.O. 24V relay and transformer. This will depend on the VA
available from the HVAC unit transformer. S&P recommends 20VA be available to operate
the motorized damper. If 20VA is not available from the HVAC unit transformer, then an
auxiliary transformer to power the ES24V and motorized damper is recommended (transformers and relays provided
by others).
All wiring must be carried out by a qualified electrician in accordance with National Electrical Code and all applicable
state and local buildings codes. Electrical connections should be made in accordance with the following
Figures: 1-3
FIGURE 1
ES24V - (20VA REQUIRED TO OPERATE MD6 MOTORIZED DAMPER. CLASS II POWER
SUPPLY CAN COME FROM HVAC TRANSFORMER,
IF ADEQUATE, OR AUXILIARY TRANSFORMER IF NECESSARY)
SENSOR
SENSOR
C TS TS R G
R
C
G
G
C
R
FIGURE 2
ES24V - (20VA NOT AVAILABLE FOR DIRECT CONNECTION OF
MOTORIZED DAMPER)
COMMON
TRANSFORMER
R
C
G
G
C
R
SENSOR
G R TS TS C
SENSOR