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MAKE – UP HEA
T REQUIREMENTS @ 1200 CFM ( 566 L/s )
9
Outdoor
Temp
° C
° F
0
32
-10
14
-20
-4
-30
-22
-40
-40
Nominal
20 °C
(68 °F)
7
10
12
15
17
Nominal
25 °C
(77 °F)
10
14
15
19
21
Nominal
30 °C
(86 °F)
14
17
19
22
24
NO
TE: ALWAYS REFER TO THE MOST RECENT VERSION OF
ASHRAE VENTILATION STANDARD TO DETERMINE CFM
REQUIREMENTS.
INSTALLATION INSTRUCTIONS
LOCATION
The HR
V should be suspended from a supported ceiling ideally in a mechanical
room proximate to an outside wall to establish outside venting and weather-
hoods. This unit can only be mounted indoors and consideration should be give
to the location of available power and water drainage for the unit’s condensation.
When installing the unit, ensure that it is level and that adequate space is
allowed around the unit for easy accessibility into the access doors for service
and maintenance.
DUCT SYSTEM
The Duct System must be w
ell designed to allow the HRV to operate at its’
maximum efficiency. It is very important the Duct System must be adequately
sized and includes no sharp radius bends or tees which will significantly
increase the pressure drop in the Duct System and reduce air flows.
Galvanized ducts must be sized for 1200 f.p.m. (6.09 m/s) maximum velocity;
this is recommended to avoid excessive pressure drop and noise. Ducting
should be as short as possible and use the minimum number of elbows and
tees. Connecting duct sections and shorter runs may be flexible ducting one
size larger than the metal duct. The use of flexible duct connectors at the HRV
will considerably reduce noise transmission. All duct joints must be secured
with screws, rivets or duct sealant and sealed with aluminum tape.
2500DD-Install-ENG 1/17/06 5:56 PM Page 9
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