Installation manual

2
Before installation, careful consideration must be given to
how this system will operate if connected to any other
piece of mechanical equipment. It is always important to
assess how the operation of any air movement device
may interact with vented combustion equipment (i.e. Gas
Furnaces, Oil Furnaces, Wood Stoves, etc.).
NEVER install a ventilator in a situation where its normal
operation, lack of operation or partial failure may result in
the backdrafting or improper functioning of vented
combustion equipment without proper safety/warning
devices installed as required.
Airia Quantum Series in-line fans are approved for both
Residential and Commercial applications. The superior
plastic resin is suitable for applications requiring fire rated
materials and provides a quiet, weatherproof, versatile fan.
Plastic fans are suitable for indoor OR outdoor
installations and are suitable for temperatures of -40°F
(-40°C) to 140°F (60°C).
Low voltage controls installed with the QVS are
compatible with future HRV/ERV upgrades.
11-1/4" dia
9-1/8"
6" nominal duct collar
5" nominal duct collar
4" nominal duct collar
2-5/8"
3-1/4"
0
(0)
25
(11.8)
50
(23.6)
75
(35.4)
100
(47.2)
125
(59.0)
150
(70.8)
175
(82.6)
200
(94.4)
275
(129.8)
225
(106.2)
250
(118.0)
300
(141.6)
325
(153.4)
0.4 (50)
0.2 (25)
0 (0)
0.6 (75)
0.8 (100)
1.0 (125)
1.2 (150)
1.4 (175
)
1.6 (200)
1.8
(225
)
2.0 (250)
2.2 (275)
Static Pressure - in W.C. (Pa)
Airflow - cfm (L/s)
NBQ-COMBI-456 - Field Selectable 4", 5" or 6"
4" Duct
5" Duct
6" Duct
Do not use fan where water can/will accumulate
inside fan housing. When required – always use
suitable electrical connections to prevent water
from entering the fan housing.
WARNING
For general ventilation only. DO NOT use this fan to
exhaust hazardous or explosive material and
vapors.
CAUTION
Model 99-NBQCOMBI-456
Field Selectable 4”, 5”, or 6”
In-line Fan Set-up
The duct system should be
sized for high speed
operation. Low speed
reduces air flow by
approximately 45%.