02/04
4034-102 Rev F
5
HRV200PLUS INSTALLATION INSTRUCTIONS
D. DEFROST OPTIONS
The HRV200PLUS performs as a whole house heat recovery ventilator during Fresh Air Fireplace operation and continuous ventilation
operation. When the Fresh Air Fireplace is in use, the HRV core temperature is elevated with no chance of frost or ice build-up at any
time. However, when the HRV200PLUS is operating in continuous ventilation mode, outdoor temperatures below 25°F can cause frost
to form on the core. This frost can reduce airflow through the HRV resulting in unbalanced operation and could inhibit Fresh Air
Fireplace operation.
The Caliber NXT Plus and 6100 PLUS Fresh Air Fireplace is an open hearth design using the draft created by the HRV200PLUS to
form an air curtain containing flue products in the hearth, as opposed to the typical glass front. The fronts for the Caliber NXT Plus and
6100 PLUS are shipped with fixed mesh screens to provide a barrier between the occupants and the fire.
Choose the defrost method best for your application:
No Defrost
Mild climates where defrost is not needed. Allows fixed mesh screens/screen door retainers to be removed on the Caliber NXT
Plus
and the
6100 PLUS.
Room Air Defrost
Defrosts with indoor air using the Optional Defrost Kit. Does not cause unexpected Fresh Air Fireplace ignitions. Allows fixed
mesh screens/screen door retainers to be removed on the Caliber NXT Plus and the
6100 PLUS.
Fresh Air Fireplace Defrost
Defrosts with the heat from the Fresh Air Fireplace. Causes unexpected Fresh Air Fireplace ignitions. Fixed mesh screens/
screen door retainers must be used on the Caliber NXT Plus and the
6100 PLUS.
WARNING!
Removing the DEFC1 jumper allows the HRV200PLUS to independently ignite the Fresh Air Fireplace.
WARNING!
Do not remove the fixed mesh screen or screen door retainers on the Caliber NXT Plus
and the 6100 PLUS fronts unless:
1. Fresh Air Fireplace Defrost is disabled (DEFC1 jumper installed), and
2. Fresh Air Fireplace operation is supervised by an adult. Removing the fixed screen mesh or mesh door retainers could
result in injury, property damage or death.
Note:
When No Defrost or Room Air Defrost is selected for the defrost method, the fireplace will not be used for defrost cycles. Some
homeowners may elect to remove the fixed mesh screen or screen door retainers from the Caliber NXT Plus
and the 6100 PLUS fronts for
true open hearth operation.
1. No Defrost
This option is not generally recommended but may be used under the following conditions:
a.
The system is installed in an area with fewer than five days a year with an outside temperature below 25°F. These areas are
typically in the southern and coastal regions of the country.
b.
The system will not be used for continuous ventilation. This application is for the installation where the HRV200PLUS is not the
primary ventilation means for the building and will only be used as a power vent/heat recovery device for the Fresh Air
Fireplace.
c. Setup for No Defrost Option
1)
Install the HRV200PLUS and the Fresh Air Fireplace per the instructions in this manual.
2)
Ensure the DEFC1 jumper is installed on the HRV control board. This jumper will disable the defrost logic in the
HRV200PLUS.
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