Hearth and Home Technologies Heat Recovery Ventilator HRV200PLUS User Manual
Page 30
30
4034-102 Rev F
02/04
HRV200PLUS INSTALLATION INSTRUCTIONS
2) Termination
a) When the 12VDC signal is removed from the HI input terminal, R1 terminals is immediately de-energized shutting
down fireplace operation.
b) The blower motor remains on high speed for 20 seconds.
c) The C2 terminal is de-energized extinguishing the electric ember lights.
d) The blower motor remains on low speed for an additional five minutes.
e) The HRV returns to its previous state.
d. Novus Plus/6000 Plus
1) Initiation
a) Blower motor on high for system pre-purge.
b) Fifteen second delay timer activates while the HRV energizes the alternate exhaust damper to move closing off the
alternate exhaust port.
c) The K7 relay energizes making connection between the R1 and R2 terminals activating the IPI ignition circuit to
initiate the fireplace ignition process.
Once fireplace operation is no longer required, the system terminates the operation of the fireplace by deactivating
the ignition process and executing a post-purge as follows:
2) Termination
a) When the 12VDC signal is removed from the HI input terminal, the K7 relay is de-energized opening the connection
between R1 and R2 shutting down fireplace operation.
b) The blower motor remains on high for system post-purge - 20 seconds.
c) The HRV returns to its previous state.
WARNING!
The Fresh Air Fireplace is used by the HRV200PLUS
for normal defrosting of the aluminum core during
cold weather ventilation operation. This results in
fireplace operation independently initiated by the
HRV200PLUS.
The ON/OFF switch on the fireplace will not pre-
vent fireplace operation during HRV Defrost Mode.
Non-fireplace defrost may be achieved by install-
ing the optional defrost assembly HRV99DEFKIT.
2. HRV Defrost Mode
When the fireplace is not in use, the HRV200PLUS provides continuous ventilation for the whole house. During this normal
ventilation operation, the aluminum core of the HRV can develop frost when outdoor temperatures fall below 25°F. The Fresh Air
Fireplace is used as a source of heat to defrost the HRV200PLUS during cold weather ventilation operation. During HRV Defrost
Mode, the HRV will independently demand fireplace operation.
The HRV Defrost Mode sequence of operation is identical to Fireplace High Fire operation. This will include a pre-purge, ignition
process, burn time and post-purge.
HRV Defrost Mode is activated according to the following Table based on the Supply Air Temperature (SAT) sensor and terminates
based on the Exhaust Air Temperature (EAT) sensor.
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