Hi-Velocity HE-Z Manuel - Page 6

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Damper Adjustment

Zone Dampers Adjustment Stops

The Adjustment Stops on the

actuators have been preadjusted with

approximately 10% bleed through.

This allows for air to circulate in a

non-calling zone. This can be

adjusted by adjusting the "0" stop

limit.

Balancing Zones

In the case that there is too much

pressure through a calling zone

(usually a smaller zone on the

system) the damper can be adjusted

partially closed. Partially closing a

damper will cause back pressure on

the blowers pressure control and the

fan coil will slow down the motor.

Adjust the "1" stop to limit the

actuators opening to the level of

pressure/air required for the air flow

desired for the smaller zone.

Zone damper Wiring

The zone dampers on the HE-Z

Zoning Fan Coil comes pre-wired.

There are Seven Built-in Timers that

over ride the operation of the zone

dampers and output signals of the

zone board these are shown on

pages 2 and 3.

Constant Fan Comfort

Having the fan switch at the thermostat to the

"ON" position is strongly recommended. This

utilizes continuous air circulation for optimal

Indoor Air Quality (IAQ) and Energy Efficiency.

Independent testing has shown that utilizing the

recirculating fan with the Hi-Velocity Systems

VFD motor reduces total energy usage. This is

due to less on/off cycling of AC and Heating

equipment by constant de-stratification of the air.

The zone controller board will default the

actuators in the open position when there is no

call for constant fan, heat or cooling. If one of the

zones is calling for constant fan and the others

are not, the zones that are not calling will close.

Closing and Opening

Adjustment Stops

Manual Override

Button

ZONE DAMPER WIRING

In the event of a zone calling for heat or cooling

the zone dampers (regardless if a zone is calling

for constant fan) will close the non-calling

heat/cool zones. The actuators have been pre-

adjusted with approximately 10% bleed through,

this allows for air to circulate in a non-calling

zone. With the 10% by-pass it will not over heat

or cool a non-calling zone if the other zones are

calling heat or cooling but will add comfort as the

air will not be stagnate in the non-calling zone

and will supply more even air temperatures

throughout.

Open and Closed Adjustment Stops

The Adjustment Stops can be

adjusted to stop rotating before it

reaches its stops. These can be

moved to any position without harm.

1. Loosen the end stops. Caution: be

cautious not to unscrew from the

captive nut under the slot.

2. Move the stops (2.5° steps) to the

desired position and re-tighten the

screw.

Manual Override Button

Press the Manual Override Button

and the gear train is dis-engaged so

the damper shaft can be moved

manually. Release the button and the

gear train is re-engaged.

To lock in manual mode press down

the Manual Override Button and push

in the side locking tab. To release,

push down the Manual Override

Button and release this will disengage

lock.

M6 - 24vac Closes damper

M4 - 24vac Opens damper

M2 - Constant 24 vac HOT

M1 - Common 24 vac

Pre-Release 052917

F.000

052917