8
Installation
NOTES:
1. Furnace blower is required to operate when ventilation is required.
2. Weatherhood arrangement is for drawing purposes only. Six feet (2 m) minimum separation required.
Eighteen inches (460 mm) above grade minimum.
3. Due to pressure differences in the equipment, airflows must be adjusted and confirmed on site.
4. Maintenance should be performed twice a year or more if required. Remove and wash filters and core and replace.
Outside hoods should be visually checked for blockage regularly.
5. Drain is required as shown above.
6. Built in balancing damper may require seasonal adjustments.
Forced
Air
Furnace
Outdoors
Cool Air
Return
Return Air
Built-in balancing damper*
in both air streams.
*Unit is normally balanced with
furnace running at highest
operational speed
3’
min.
recommended
Insulated
Duct
DRAIN
SPOUT
TAPE
TO DRAIN
TEE
CONNECTOR
DRAIN
SPOUT
REMOTE DEHUMIDISTAT
*requires 2 wires
• anywhere humidity is a concern
• opens dampers to allow ventilation when humidity level exceeds
selected setting
Part No. 99-130
Dehum
idistat
Setting
Relativ
e to
Outside
Conditio
ns
WINTER:
Set dehumidistat
between 30% to 40%.
If home is too dry,
adjust to higher setting.
If home is too humid,
adjust to lower setting.
SUMMER:
Set dehumidistat
to OFF.
Dehumidistat Operation
Low Voltage - 24 VAC
PROBLEMS
SOLUTIONS
Air is too dry
• Increase humidity
• Switch ventilation mode from continuous
to intermittent
• Install a humidifier
Air is too humid
• Reduce the humidity
• Verify if dryer is venting in basement
• Verify if heating wood is stored in basement
• Wait for outside temperature to change
Ex. Summer can be extremely humid
• Verify balancing of the HRV
• Run furnace blower continuously to increase
ventilation rate
