Location for mounting, The ductwork system – Lifebreath 500ERV User Manual

Page 13

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13

Location for Mounting

The HRV/ERV must be located in a conditioned
space where the surrounding air temperature
does not fall below 60˚F (16˚C). The unit must be
mounted level (horizontal). The warranty will be
void if these conditions are not met.

Typically the HRV/ERV is positioned close to
an outside wall or the roof to simplify the
connections and keep the length of insulated
ducting required for the fresh air intake to a
minimum.

A minimum clearance of 36 inches (90 cm) in
front of the HRV/ERV is recommended to service
the ventilator. The HRV/ERV may be mounted on
an equipment platform providing the drain hoses
are clear and there is sufficient space to open the
doors for servicing.

Install the drain pans in the bottom of the
HRV/ERV so the drain (not on all models)
connections protrude through the holes provided.
Use drain hoses with hose clamps to connect the
drain pan outlets to a floor drain or standpipe.
Make sure the drain line slopes down to the
outlet. If this is not possible a condensate pump
will be required for positive removal of the water.
Protect the drain line from freezing.

The Ductwork System

A properly designed ducting system will allow the
HRV/ERV to operate at its maximum efficiency.
(Air flow will be restricted by undersized ducting,
use of too many elbows, tees, bends, etc.).
Always try to keep duct runs as short and
straight as possible.

NOTE: Fully insulated ducting with an integral

vapour barrier must be used on all runs
passing through unheated areas in order
to avoid condensation problems and
energy losses from the air steams.

All joints must be airtight, sealed and impervious
to moisture. See specification sheets for each
unit for exact duct sizes and location.

To minimize pressure drop and noise, galvanized
metal ducts, properly sized, are recommended.
Keep ducting as short as possible and use a
minimum of elbows and tees. Connecting sections
and shorter runs may be flexible ducting one size
larger than the metal equivalent. Use flexible duct
connectors at the HRV/ERV to avoid noise
transmission.

All duct joints must be secured with screws,
rivets or duct sealant and sealed with aluminum
duct tape to prevent leakage.

DRAIN

SPOUT

TAPE

TO DRAIN

HRV CABINET

TEE

CONNECTOR

DRAIN

SPOUT

Forming the “P” Trap

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