Carrier HRVCCLHU Installation, Start-Up, And Operating Instructions Manual page 12

FRESH AIR FRESH AIR FILTERED AIR
FROM OUTSIDE TO BUILDING TO BUILDING
STALE AIR
TO OUTSIDE
STALE AIR
FROM BUILDING
STALE AIR
BUILDING
Fig. 22_HRVCCSVU Airflow During
Air Exchange
FRESH AIR
TO BUILDING STALE AIR
FROM BUILDING
STALE AIR
FROM OUTSIDE
A92382
A92383
Fig. 23---HRVCCSVU Airflow During
Recirculation and Defrost
FILTERED A_R STALE AIR
TO BUILDING FROM BUILDING
"5
Fig. 24---HRVCCLVU Airflow During
Air Exchange
VENTILATION EVALUATION
A92384
DO NOT use HRV during construction of a house or when
sanding drywall. This type of dust may damage system.
When ventilation requirement is determined, use Product Data
Sheets to reference unit airflow delivery and performance.
12
A92385
Fig. 25--HRVCCLVU Airflow During
Recirculation and Defrost
The ventilation capacity of an HRV unit while at maximum speed
is defined according to greatest total airflow required. These
methods are derived from the Canadian National Building Code
1995 version and the CSA F326.1 revision.
The following 2 methods can be used to evaluate the approximate
ventilation needs of a house. Accuracy of calculations are depen-
dent upon the information available and knowing critical measure-
menU; of the structure. (See Fig. 26.)