PSG MAX CADDY PF01102, Installation And Operating Instructions Manual

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It is important to respect the velocity in the main duct, the secondary ducts, as well as the velocity at the room outlets.
The static pressure of your system must be adjusted to at least 0.2 IN.W.C. and must not exceed 0.5 IN.W.C. Finally,
make sure that you never exceed the maximum blower current.
11.7. OPERATING INSTRUCTIONS
11.7.1. HEAT Mode
When the temperature in your house is below the value at which your wall thermostat is programmed, a signal is sent
to your furnace through the PC board, activating the motorized damper located in front of the furnace and thus allowing
more oxygen to the fire. The RTD temperature probe, located inside the hot air plenum of your furnace, reads the
plenum temperature continuously. When the temperature reaches the start-up value selected by the user (KIP
–
Kick-
in Point ), the distribution blower starts functioning at the minimum speed. Thereafter, the blower increments its speed
until it reaches the best efficiency point (BEP) determined by the manufacturer. If the temperature inside the hot air
plenum exceeds the limit determined by the manufacturer, the blower automatically selects the maximal speed and the
motorized damper closes in order to slow down combustion. When the temperature returns to a safe level, the blower
speed gradually returns to the speed required to maintain the BEP.
11.7.2. COOL Mode
If an air conditioning unit is installed, the PC board will have to be connected to a dual-function wall thermostat (e.g.
“heat/cool”) in order to synchronize the start of the furnace blower with the start of the air conditioning condenser.
Upon receiving the wall thermostat’s signal, the furnace blower will start functioning at the speed selected by the user.
11.7.3. CIRC Mode (air circulation)
This mode is used to circulate air during summer. Thus you will benefit from your ducting system to circulate fresh air
from your basement throughout the house. To activate the circulation mode, put the thermostat in FAN-ON mode.