Zonex ZonexCommander, Руководство по установке

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34
SIZING ZONE DAMPERS
If the ductwork already exists, simply size the damper to fit the ductwork.
For new systems or retrofit jobs:
a) Determine CFM from heat gain or loss calculations.
b) Select damper size using either the round capacities chart, the
rectangular capacities chart or by using a duct sizing table or
calculator.
c) Select a Zonex Systems damper to fit the duct size selected for
that zone.
Make sure your zone dampers match the type specified in the table
showing Maximum Differential Pressure.
INSTALLATION NOTES
1. Do not exceed 700 FPM in a register/diffuser branch duct.
2. If a damper is installed within 3 feet of register/diffuser, install sound
attenuating flex duct between damper and outlet.
3. Zone dampers should be preceded by 2’-4’ of straight pipe where
possible.
4. In attic installations and high humidity areas, the Zonex Systems
damper should be insulated along with the duct work. The hat section
on the round damper is delivered with insulation between the hat
section and pipe. Therefore, insulation should be applied to the
round pipe and be butted against the hat section, (do not insulate the
motor). The motor generates enough heat so that no condensation
will develop on it.
5. Remember to allow a 16-inch gap in the duct for Heavy Duty
rectangular dampers.
6. Medium pressure rectangular dampers slide into a 3 1 ⁄
4
-inch wide
cutout in the side of the preexisting ductwork.
NOTE: Dampers should not be installed with motor upside down in
the 6:00 position.
Up to three dampers can be directly controlled by one thermostat.
To wire two to three zone dampers to one thermostat, use the
following diagram shown. Remember to size the damper power
MODSTAT
M
C
R
O
ZONE DAMPER
R
C
M
C
R
O
R
C
M
C
R
O
ZONE DAMPER
R
C
M
C
R
O
ZONE DAMPER
R
C
SLAVING MORE THAN
THREE ZONE DAMPERS
Use the following diagram when a thermostat will be
controlling more than three zone dampers. Use an
power the slaved dampers.
ZONE DAMPERS
SIZE TRANSFORMER AT
2VA PER DAMPER
additional 24V transformer sized at 2VA per damper to
transformer for the total number of zone dampers. Each actuator
draws 2 VA.
7. Minimum open and close positioning is field adjustable on the
actuator. The damper is shipped from the factory to close 100%.
SLAVING UP TO THREE ZONE DAMPERS