Carrier HRVCCLHU Operations Instructions download pdf (Page 11)

collar in stale-air duct of HRV, and record airflow. Next, install

collar in the fresh-air duct and record airflow. If 2 flow collars are

available, it will be much easier to read airflow and properly adjust

dampers to balance unit.

With speed control at maximum speed (high-speed operation) and

continuous air exchange occurring with outside, connect hoses

from flow collar to a magnehelic gage. (See Fig. 17.) The gage

must be leveled and zeroed before use to read accurately. If needle

falls below zero, reverse hose connections.

Measure exhaust air first, it is typically the lowest pressure due to

nature of system and ductwork. Next, measure fresh air. If fresh air

reading is higher than exhaust reading, adjust damper until reading

is same. If reading is lower, return to exhaust damper and adjust to

obtain same reading. You can use label on flow collar to convert

static pressure into airflow.

Once HRV is balanced and dampers are adjusted to equalize

airflow, use tape or drive screws to prevent damper blades from

moving. Remove flow collars and secure ducts. This procedure

should be repeated to ensure unit is balanced properly.

NOTE:The flow collar directional arrow (on flow collar) must be

oriented in the airflow direction of unit.

NOTE:Some field modification may be required to ensure proper

temporary installation of flow collar during balancing when

insulated flexible duct is used.

Fig.20—HRVCCLHUAirflowDuring

AirExchange

A99269

STALE AIR

TO OUTSIDE

FRESH AIR

TO BUILDING

FRESH AIR

FROM OUTSIDE

STALE AIR

FROM BUILDING

Fig.18—HRVCCLHUandHRVCCSVU

CrossFlow

A98403

STALE AIR

TO OUTSIDE

6°C

43°F

FRESH AIR

FROM OUTSIDE

0°C

32°F

FRESH AIR

TO BUILDING

16°C

61°F

STALE AIR

FROM BUILDING

22°C

72°F

Fig.21—HRVCCLHUAirflow

DuringDefrost

A99270

FILTERED AIR

TO BUILDING

STALE AIR

FROM BUILDING

Fig.19—HRVCCLVUCounterflow

A98404

STALE AIR

FROM BUILDING

22°C

72°F

FRESH AIR

TO BUILDING

20°C

68°F

STALE AIR

TO OUTSIDE

2°C

36°F

FRESH AIR

FROM OUTSIDE

0°C

32°F

Fig.17—MagnehelicGage

A98400

MAX

MIN

AIRFLOW

DIRECTION

CONVERSION

CHART

MAX

MIN

ZEROING SCREW

FLOW

COLLAR

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 23 24

Comments to this Manuals

No comments

Carrier HRVCCLHU Operations Instructions Page 11

Comments to this Manuals

Related products and manuals for Household fans Carrier HRVCCLHU