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2.3.1.2
Exhaust Air High Speed Adjustment
From the window in the HRV access door (C), locate the two blue
pots on the circuit board. The top pot adjusts the exhaust fan HIGH
speed. Turn clockwise to increase and counterclockwise to decrease
CFM. Adjust the exhaust flow rate to within 10% of the OA rate (step
2.2.1)
Balancing Mode 2
2.3.2
2.3.2.1
Low Speed Balancing
Measure and record the flow rate of the Outside Air with the fan coil
in low speed ventilation (fan On, thermostat system switch off) using
the same method described above. Note:
No adjustment can be made
to this flow without affecting the high speed flow and repeating the
high speed balance.
Measure the exhaust air from building low speed flow.
Use the
lower
pot to adjust the exhaust fan LOW speed.
Turn clockwise to increase and counterclockwise to decrease CFM
Adjust until the flow matches that of the outside air.
Balancing Mode 3
2.3.3
2.3.3.1
Low Ventilation on a Call for
Heat
On a call for heat or cool the main fan motor
increases speed. To prevent over ventilating
during the call, a throttling damper (D) partially
closes the outside air opening. Several damper
stop points (E) are available on the throttling
damper assembly. 1) Measure the outside air
when the fan coil is in a call for heat and set the
stop to a more open position if more OA is
need for balance or a more closed position is
less OA is needed. 2) Adjust the OA flow
within 10% of the EA flow in low speed.
The
exhaust air flow rate in a call for heat or
cooling should not change from that of low
ventilation mode.
A
C
D
E
Summary of Contents for Enerboss 400C Series
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