Operating Instructions; Control System; First Use - General Information; First Use - Setttings - PSG MAX CADDY Installation And Operating Instructions Manual

4. OPERATING INSTRUCTIONS

4.1

CONTROL SYSTEM

On the Max Caddy furnace, a new electronic control was developed. This system is more polyvalent. All connections
are done from the PC board. There are connector ports available for all components and options. Under the HEAT
mode, a logic was developed to provide you with the best comfort and efficiency; when you are heating with wood,
the distribution blower starts at speed #1 based on a preselected temperature programmed into the PC board (this
temperature is called the KIP – Kick-in Point). The temperature is read by the RTD probe located inside the hot air
plenum. As the temperature continues to rise inside the hot air plenum, the PC board changes the speed of the
blower to speed #2. This speed should maintain the most efficient temperature (BEP – Best Efficiency Point) inside
the hot air plenum. The BEP has been set at 160F by the manufacturer when wood supplies the energy required for
heat. If the optional oil burner or electrical unit provide the heat, the BEP is set at 150F. Whenever the temperature
inside the hot air plenum continues to rise above the BEP, the PC board selects a higher speed in order to stabilize
the temperature into the ducting system and therefore maintain the BEP.
In the case of the electrical or oil option, the blower starts as soon as that there is a request for heat from the
option's thermostat. In other words, for security reasons, the distribution blower does not wait for a minimum
temperature to be reached inside the hot air plenum before starting. However, the rest of the logic remains the
same. That is, for as long as there is a heat demand, the PC board will vary the distribution blower's speed in order
to maintain the BEP inside the hot air plenum.
4.2 FIRST USE – GENERAL INFORMATION
Once the installation is complete and prior to using the furnace, the electronic control of the furnace must be set to
enable all applicable functions depending on the options chosen. To do this, it is important to know the options that
are installed on your furnace. Table 1 shows the different possible configurations and code to select in order to
activate the one that applies to this particular installation.
4.3

FIRST USE - SETTTINGS

When turned on, the screen will scroll the name of the company and the software version followed by the 1111 flash
code that corresponds to the setting 'WOOD ONLY'. While the code is flashing, you can change it by pressing any of
the arrow keys and once the corresponding installation code displayed, press SELECT to confirm, the display will
show the word DONE to confirm the selection and automatically switch to HEAT mode. (See instructions for other
settings available).
This selection will be retained even in the event of power failure. In case this selection must be changed following
the addition of an option or for any other reason, turn off the power to the circuit board, hold the MODE button down
and restore power; the screen will scroll the name the company, the software version and the numbers from 1 to 36
while the original program is restored. When the number 36 is reached, release the MODE button and the screen
will scroll to the new company name, the software version and the 1111 code will display and flash. It will then be
possible to select and validate the new configuration.
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