Lifebreath RNC155, RNC10 Fresh Air, Stale Air, Airflow Reference Chart, Step, Balancing Procedure

Air Flow Balancing using the Door Ports Models RNC155 and RNC200 Only

The door ports ( MODELS RNC155 & RNC 200) are designed to quickly and measure the airflows for balancing.

Normally the HRV would be balanced on high speed. If the HRV is connected to a forced air system, both systems should be set to run at the highest operational speed when balancing is performed.

Balancing Procedure

Step 1 Remove balancing port covers.

Step 2 Insert one end of each connection hose into a rubber fitting. (Use light pressure until fitting is snug).

Step 3 Attach the connection hoses to pressure gauge

Step 4 Fresh Air - Connect hoses to door ports as illustrated (record reading).

Step 5 Stale Air - Connect hoses to door ports as illustrated (record reading).

Step 6 Refer to the Airflow Reference Chart for the conversion of gauge reading to airflow reading.

Step 7 Damper the airflows as required to balance the system.

The fresh airflow must equal the stale airflow. Step 8 Repeat steps 4 to 7 as required to confirm airflows.

Fresh Air

Step 4

Measuring Fresh Air Side (Connect to both ports at the same time).

MAGNEHELIC	Pressure
	Gauge

Stale Air

Step 5

Measuring Stale Air Side (Connect to both ports at the same time).

	Pressure
MAGNEHELIC	Gauge

Magnehelic Door Port Balancing Kit

Part No. 99-206

Use the Magnehelic Gauge Kit (Part No. 99-206) for door port balancing.

1	- Pressure Gauge	4	- Rubber Fittings
2	- Connection Hoses	1	- Instruction Page

Airflow Reference Chart

Pressure Gauge	Fresh Air	Stale Air
Reading	Stream Flow	Stream Flow
(in w.g.)	(cfm)	(cfm)
0.070	75	54
0.080	80	59
0.090	84	65
0.100	89	70
0.110	93	75
0.120	98	81
0.130	102	86
0.140	106	91
0.150	111	97
0.160	115	102
0.170	120	114
0.180	124	118
0.190	128	123
0.200	133	128
0.210	137	133
0.220	142	138
0.230	146	143
0.240	151	148
0.250	155	153
0.260	159	158
0.270	164	163
0.280	168	167
0.290	173	172
0.300	177	177
0.310	181	182
0.320	186	187
0.330	190	192
0.340	195	197

Door port balancing is only available for Models RNC155 and RNC200.

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