15
The Integrated HVAC System
WARNING: The 2500 is a quiet, efficient, low
pressure system. Special care and attention
should be given if connecting this unit to any
other air handler that may draw more air than
the 2500 is designed to accommodate.
The HRV has become an integral component of the
HVAC system. Figure 4 shows an HRV unit provid-
ing fresh air directly to the return air plenum of a
Rooftop heat/cool unit.
Many buildings have a ceiling return air plenum
as in Figure 5. Fresh air from the HRV can be intro-
duced directly into the ceiling space near the air
handler’s intake.
In installations where it is satisfactory to provide
general exhaust from the space, the air to be
exhausted may be taken directly from the return air
plenum to the HRV as it is drawn back to the air
handler. Fresh air supplied by the HRV is then intro-
duced directly into the return air plenum but at a
location closer to the air handler. The air handler
would have a constant running blower to effectively
distribute the fresh air and remove the stale air.
Balancing dampers would be located in both the
HRV supply and exhaust ducts between the return
air plenum and the HRV.
Electrical Connections
System is 208/230V, 1 phase, 60 Hz. This unit
meets all local codes and requirements.
It is STRONGLY recommended that an electrical
disconnect be installed prior to the HRV, and that it
is turned off and locked out before servicing the
unit.
All electrical connections should be made by a
qualified electrician.
Two (2) knock-outs are provided. One is to be used
for line voltage, and the other one for 24V control
wires.
Maintenance
As with any mechanical system, a dedicated
maintenance program will prolong the life of the
equipment, and maintain its optimum performance.
We recommend at least two (2) full inspections and
cleanings per year under nor mal operating
conditions, and more if circumstances warrant it.
Service should include:
• Cleaning of screens protecting outside hoods.
• Cleaning of core.
To access core, remove service panels and
slide core halfway out. Wash core protruding
from cabinet with water and/or a mild cleaning
solution. Push core through to the other side of
the cabinet and repeat procedure to clean the
other side of the core. In many cases, only a
vacuuming of the core surface is required.
• Inspect filters and replace as necessary.
• Wipe down drain pans and inside of cabinet,
using a mild disinfectant.
• Ensure condensate drain has free flow of
moisture.
• Inspect blowers and electrical panel.
• Confirm operation.
Summary of Contents for 2500EFD
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