7.0
ControlDevices
(cont’d)
7.3OTHER FEATURES
FURNACE INTERLOCK (for forced air heating system)
The furnace fan can be interlocked so that it will run simultaneously with the ERV or HRV to ensure proper distribution of fresh air throughout the house (see table section 7.4, to see if it is available on your unit).
PERMANENT MEMORY
Our electronic controls have a default memory feature in the event of a power outage. Even the date of the last service reminder is maintained as a convenience to the homeowner.
CONTROL UPGRADES
All controls can be used on any ERV, so a Basic control can be upgraded to the Electronic in the future (see table in Section 7.4 below for control availability according to the units).
7.4MAIN AND OPTIONAL CONTROLS AVAILABLE FOR YOUR UNIT
| MAIN CONTROLS | OPTIONAL CONTROL |
| |
Model number | BASIC | ELECTRONIC | Furnace Interlock | |
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X | X | X | Integrated | |
X | X | X | Integrated | |
X | X | X | Integrated | |
X | X | X | Integrated | |
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7.5SPECIAL COLD WEATHER TBI MODE FOR ERVS
The enthalpic core installed in ERVs requires extra protection when the outside temperature drops below
A special operating mode called TBI
Characteristics of cold weather TBI mode
•activated when the outside temperature drops below
•20/40 cycle (20 minutes LOW speed followed by 40 minutes OFF).
•usual control of air supply via the main wall control is suspended (except for the OFF position).
•optional control
•deactivated when the outside temperature warms up higher than
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