The Use Of The "Bi-Energy" Function; Fan Control; Modes, Options, And Programming - PSG MAX CADDY Installation And Operating Instructions Manual

1 1 1 1 Wood only
2 2 2 2 Wood-oil combo
3 3 3 3 Wood-electric combo
4 4 4 4 Trio: wood followed by oil and electricity
5 5 5 5 Trio: wood followed by electricity and oil
6 6 6 6 Bi-energy

4.3.1 The use of the "BI-ENERGY" function

The bi-energy function is used when a local utility company (Hydro-Quebec for instance) offers a bi-energy program
under which a preferential rate is given, provided that the appliance is equipped with an electronic control that
guaranties the use of a particular source of energy (ex: electricity) based on a given criterion (ex: the outdoor
temperature).
When the MAX Caddy is programmed for bi-energy, a temperature sensor (normally open contact) is connected to
the PC board (see electric diagram – "BIENERGY" port). The contact remains open for as long as the outside
temperature is above a certain value (this reference value is programmed into the system provided by the utility
company). As long as the contact remains open, the electrical unit supplies the heat when the wood is not able to
satisfy the thermostatic demand. If, however, the outside temperature reaches a level below the reference value,
the contact closes and the oil unit is used as the option for heat if the wood is not able to satisfy the thermostatic
demand.
4.4

FAN CONTROL

We recommend that the HEAT mode be programmed for the MAX Caddy. Under the HEAT mode, the distribution
blower uses various speeds that are controlled by the PC board based on the hot air plenum temperature. The
plenum temperature is read by the RTD temperature probe. The manufacturer's programmed settings should
provide the most efficient operation for a majority of installations. The PC board also has a manual mode ("MANU" –
consult the MODES section of this manual). Under the manual mode, the MAX Caddy operates as a conventional
furnace. That is, the distribution blower starts at the speed programmed in the PC board (one single speed) based
on only one temperature point read by the RTD probe inside the hot air plenum.
The adjustment of all controls must be performed by a qualified technician. In order to obtain a continuous air
circulation during summer, you simply need to change the PC board mode to "CIRC".
MODES section of this manual.
It is not recommended to let the blower run on the continuous mode when heating with wood since the
wood furnace must reach a certain temperature before the blower starts in order to operate efficiently.
4.5

MODES, OPTIONS, AND PROGRAMMING

Your PC board is equipped with four operating modes : HEAT (automatic heating), COOL (air conditioning), CIRC
(recirculation), and MANU (manual heating). You can pass from one mode to the other by pressing on the arrows
buttons. For each mode, some selections are available. A definition is provided below (see : "The Selections").
Table 1 - Configuration
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To do so, consult the