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10.4. INSTALLATION OF A DOMESTIC WATER PRE-HEATING SYSTEM OR A HUMIDIFIER
A water heating loop option is also available to pre-heat domestic water using the energy produced by the Max Caddy
wood furnace. This water loop kit will be inserted between the wood combustion chamber and the heat exchangers.
When heating with wood, the heat from the furnace will pre-heat domestic water that will be stored in a feed tank
before entering your existing water heater. Removable panels are installed on both sides of the furnace for quick and
easy installation of the loop. A 24 volt solenoid valve must be installed at the inlet of the loop and must be connected to
the HOT H
0 terminal on the PC board; when the plenum temperature reaches 120°F, the valve opens to allow water
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circulation. It closes when the temperature drops below 100°F to prevent overcooling the combustion chamber during
low firing rates. See section 28.3 -
instructions for the hot water loop kit are supplied with the kit.
NOTE : NEVER INSTALL AN AUTOMATIC FEEDER.
The HUM OUT terminal may also be used to activate the 24 volt relay of a humidifier installed in the system which,
when connected to the PC Board, will be activated and deactivated at the same temperatures as the water solenoid
valve (120°F et 100°F). See section 28.6 - HUMIDIFIER for electrical connections.
To verify the status (open or closed) of the valve/relay, see section 14.1 - VALIDATING STATUS OF A COMPONENT.
11. CONFIGURATION AND OPERATING INSTRUCTIONS
11.1. CONTROLS SYSTEM
The Max Caddy has a sophisticated electronic control. This system is more versatile. All connections are made from
the control panel. Terminal blocks are provided for all components and options.
Before you configure your system and learn how to operate it, make sure that your wall thermostat is wired correctly to
your furnace, that the temperature probe (RTD) is well installed in the hot air plenum and connected to the link board
and that your air distribution system is complete.
The furnace uses a touch screen, the latest technology in control devices. Blowers, power supplies and options are
controlled from this screen.
It is important to note that your furnace is equipped with three main electronic components: the link board, the power
board and the touch screen. The power board is already installed in the blower box.
The power board is used to supply current to the different electrical components, in particular:
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Supply current to the different electronic boards;
Supply current to the distribution fan;
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Supply current to the sequencers of the electrical unit (optional);
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Supply current to the oil burner.
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The link board is used more precisely for:
Connecting the hot air plenum's temperature probe (RTD type);
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Connecting the wall thermostat;
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Connecting complementary equipments;
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Connecting a heat pump.
The LCD touch screen is used to operate the system. More precisely for:
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Choosing the combustion parameters;
Selecting the options used;
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Show the temperature in the hot air plenum;
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Selecting heating priority;
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Selecting language and units displayed;
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Viewing statistics;
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Selecting distribution fan speeds;
Troubleshooting to detect problems with the appliance.
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HOT WATER
for electrical connection. Complete installation and operation
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