2
ERV ports on side (bottom view)
3
2
8
1
4
4 5
6
7
A05263
Fig. 3 -- Conventional Horizontal Unit
COMPONENT DESCRIPTION
The following listed items are components of HRVCCLHA (See
Fig. 3).
1. Stale air return from building connected to return--air duct
system.
2. Fresh -- air intake connected to outdoor air inlet hood.
3. Exhaust--air connected to outdoor air exhaust hood.
4. Mechanical filters trap dust contained in the air.
5. Heat recovery core is a cross--flow type. The core transfers
heat between the 2 air streams.
6. Blowers bring in fresh--air from outside and exhaust
stale--air to outside.
7. Electronic control circuit ensures proper unit operation.
8. Fresh -- air supply from HRV connected to return--air duct of
forced--air system.
9. See Fig. 9 for terminal connector block for wiring wall and
timer contorls.
UNIT INSTALLATION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not install ERV/HRV in a corrosive or contaminated
atmosphere.
CAUTION
!
Step 1.—Mount Unit
The ERV/HRV can be suspended from floor joists using chains and
4 springs. Attach metal hanging bracket to all 4 sides of cabinet (See
Fig. 4). The unit may be installed on a shelf if an isolation pad is
provided to dampen vibration. Unit should always be installed as
level as possible.
Step 2.—Independent System Application
In the absence of a forced-- air system and a typical duct system
layout, the ERV/HRV can be applied as an independent or stand
alone unit. To ensure comfort, this type of application involves
running both fresh -- air and return--air registers (or stale--air pickup
registers) throughout the home.
Fresh--air registers are normally located in bedrooms, dining room,
living room, and basement. It is recommended that registers be
placed 6 to 12 in. from the ceiling on an interior wall and airflow
directed toward ceiling. If registers are floor installed, airflow
should be directed toward the wall.
A05331
Fig. 4 -- Chain Spring Installation
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
Do not install return-- air registers (or stale-- air pickup
registers) in same room as gas furnace or water heater.
!
WARNING
Return--air (or stale--air pickup registers) are normally located to
draw from kitchen, bathroom, basement, or other rooms where
stale--air can exist.
Proper size and type of registers must be used to minimize pressure
drop. The velocity of airflow through register should not be above
400 ft/minute.
Maximum length of duct for the system should be designed
according to the highest speed of the unit. Refer to specifications
listed in unit Product Data Digest for ventilation capacities.
Step 3.—Forced-- Air Application
Most ERV/HRV applications will be installed in conjunction with
newor existing forced -- airsystem.To operateproperly, thefresh-- air
supply and stale-- air return from ERV/HRV connect directly to
return -- air duct system. This is how the ERV/HRV distributes fresh
air and removes stale air from inside of building (See Fig. 7). For
these installations, furnace or fan coil blower must be interlocked
and operate continuously whenever ERV/HRV is energized.
NOTE: The fresh air from ERV/HRV is introduced into return--air
ductat a point no less than 10 ft upstream of furnace or fan coil. This
connection should be direct (See Fig. 7). This is to allow incoming
fresh--air to mix before entering indoor equipment.
ERV/HRV
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