Balancing Reset. Honeywell VNT5200E1000, VNT5070E1000, VNT5150H1000, VNT5150E1000, VNT5070H1000, VNT5200H1000, VNT6150H1000
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32
Balancing Reset
NOTE: Once balancing is completed, balancing cannot be changed without resetting the unit.
LED
To reset:
1. Press the (+) and (–) buttons simultaneously for 10 seconds.
2. Indicator light will turn yellow at 5 seconds.
3. Indicator light will turn green at 10 seconds.
4. Release both buttons.
5. Unit has been reset and can be put into balancing mode again.
Speed
Control
Open for
Instructions
Checkout
3-POSITION
SELECTOR SWITCH
SPEED CONTROL
BUTTONS (+ AND -)
M32371
• Apply power to the unit. Move the selector switch to the CONT position to verify that the unit turns on in continuous speed.
• Initiate a ventilation call from each of the external controls. Verify that the ERV/HRV unit turns on in high speed.
• Return the selector switch to the desired position and the external controls to the desired settings.
• Inspect the ducting to ensure that there are no kinks and correct as necessary.
Airflow Measurements - VNT5070 only
The VNT5070 ventilators are balanced by utilizing pressure ports located on the duct collars and a pressureairflow correlation table provided as a decal on the side of the unit.
NOTE: The VNT5150, VNT5200, VNT6150 & VNT6200 ventilators are not provided with pressure ports or correlation charts. Instead, they are balanced by using air flow grids or pitot tubes which measure airflow directly in each airstream.
Pressure-airflow correlation table:
125
137
150
162
175
187
199
Pressure Differential
Pa in. W.C.
50 0.20
62
75
87
100
112
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
24
22
19
17
30
29
26
L/s
Fresh Air
CFM
44 93
41
39
37
35
33
87
83
79
74
69
50
46
41
36
65
61
56
22
19
17
15
32
28
24
Exhaust Air
L/s CFM
43 90
40
37
36
36
34
85
79
77
76
71
47
41
36
31
67
60
51
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—17
Airflow Measurements - VNT5070 only (continued)
PRESSURE
PORT
EXHAUST AIR
MAGNEHELIC
HIGH HIGH
LOW LOW
MAGNEHELIC
FRESH AIR
M33131
Pre & Post Balancing Steps
1 a. Install the flexible duct inner liner (vapor barrier) over the collar and seal with tape, mastic, etc.
Note-flexible insulation should be pulled back and away from the duct collar to allow access to
pressure ports.
b. Proceed with balancing steps described below.
c. Plug the pressure ports.
d. Pull flexible duct insulation over duct collar and stuff inside the double collar; seal insulation to
duct collar with tape.
2 Balancing Steps a. Measure pressure differential across the EXHAUST air stream high and low ports using a
Magnehelic gauge or other pressure gauge.
b. Measure pressure differential across the FRESH air stream high and low ports using a
Magnehelic gauge or other pressure gauge.
c. Look up corresponding air flows from the pressure-airflow correlation table.
d. Adjust airflows to a balanced condition by adjusting blower motor speeds. e. Usually the blower with more airflow is adjusted to the lower blower airflow rate.
f. Motor adjustments are described in previous section.
TrueFRESH™ ERV/HRV Ventilation Systems 69-2480EF—17 33
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Key Features
- Improves indoor air quality by removing stale air and introducing fresh, filtered air.
- Recovers heat and moisture from outgoing air to reduce energy costs.
- Automated defrost function prevents ice buildup in cold climates.
- Filter removes dust, pollen, and other airborne particles.
- Optional controls allow for flexible integration into your home automation system.