SHR 1504 Installation Manual

INSTALLATION EXAMPLES (CONT'D)

DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and

EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN

Simplified Installation

Option 1

(Return/Return Method)

NOTES:

1. Furnace blower must operate when ventilation from HRV is required.

The furnace should be set to run continuously or interlocked with HRV.

2. A minimum separation of 1m (39") is recommended between the two

direct connections.

3. In order to prevent exhausting any fresh air, the HRV's exhaust air con-

nection should be upstream of the HRV's supply air connection when

ducting to the furnace's cold air return.

4. Weatherhood arrangement is for illustrative purposes only. 3m (10') mini-

mum separation and 460mm (18") above grade is recommended.

5. Due to the differences in pressure between the HRV and the equipment

it is being connected to, the HRV’s airflow should be balanced on site,

using the procedure found in section "AIRFLOW BALANCING".

NOTE: In the case of a sim-

plified installation, Option 1

is recommended.

Example diagram only - Duct configuration may change depending on model

Stale air coming from different areas of the

house (ie bathroom, kitchen).

* Unit air flow should be balanced while HRV is on "High" speed and fur-

nace blower is running.

Outside

Air return

1 m (3' 3")

min.

recommended

Cold air

return

* Ductwork layout may dif-

fer depending on model

HRV/Furnace ducting for Simplified Installation - Option 1