Lifebreath 200STD User Manual

Procedure:
ELECTRICAL CONNECTIONS
The models 150/200 series is a 3 prong 120 VAC
plug in type, if further wiring is required it is recom¬
mended that a licensed electrician make all electrical
connections. It is very important that the unit be prop¬
erly grounded. It is recommended that a separate 15
amp/120 volt circuit be used.
WARNING: In order to prevent electric shock
when cleaning or servicing the HRV,
it is extremely important to confirm the
polarity of the power line that is switched
by the safety (disconnect) switch whose
control arm is located on the outside of the
electrical control box area. The hot line
(black) is the proper line to be switched.
To confirm the proper polarity, use voltme¬
ter or test lamp to make sure there is no
power after the switch when the door is
open. Check between that point and
ground (on the cabinet). This must be
done as occasionally some dwellings are
improperly wired. Always make sure the
HRV is properly grounded.
AIR FLOW BALANCING
It is necessary to have volume balanced airflows
in an HRV. The volume of air brought in from the
outside must equal the volume of air exhausted by the
HRV. If the air flows are not properly balanced, then;
• The HRV may not operate at
its maximum efficiency
• A negative or positive air pressure
may occur in the house
• The HRV may not defrost properly
• Failure to balance HRV may void warranty
An excessiv e positive pressure may drive
moist indoor air into the external walls of the building
where it may condense (in cold weather) and degrade
structural components. Also, it may cause key holes to
freeze up.
An excessive negative pressure may have
several undesirable side effects. In some geographic
locations, soil gases such as methane and radon gas
may be drawn into the home through basement/ground
contact areas. Radon is believed to be a cause of lung
cancer. As well, an excessive negative pressure may
cause the backdrafting of vented combustion equip¬
ment if an adequate combustion air supply is not
provided. Read the Application Warning at the start
of this manual*.
A. Six inch (15 cm) diameter flow collars
connected to an inclined or digital manometer,
magnehelic etc. with a range of 0 to .25 in. (0 to
62.5 Pa) of water are recommended for
accurate air flow measurements. To avoid air
flow turbulence and incorrect readings, the flow
stations should be located at a point at least ten
duct diameters, i.e. 6 in. (15 cm) duct requires
10 diameters X 6“ = 60" (150 cm) away from the
nearest valve or flow restriction. Refer to HRAI
installation manual. This requirement applies to
both the stale air to exchanger duct and the fresh
air to house duct.
B. Prior to balancing, make sure:
1. All sealing of the ductwork system has
been completed.
2. All of the HRV components
are in place and functioning properly.
3. Balancing dampers are fully open.
4. Unit is on HIGH speed.
5. Air flows in branch lines to specific
areas of the house should be adjusted
first prior to balancing the unit. A
smoke pencil used at the grilles is a
good indicator of each branch line's
relative air flow.
6. After taking readings of both the stale
air to the HRV duct and the fresh air to
the house duct, the duct with the lower
CFM (velocity) reading should be left
alone, while the duct with the higher
reading should be dampered back to
match the lower reading.
7. Return unit to appropriate fan speed
for normal operation.
7

Lifebreath 200STD Specifications

General

Brand	Lifebreath
Model	200STD
Category	Fan
Language	English