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4. Fill the plumbing system:
• Open all water-release points, e.g. cold and hot water faucets, showers, toilets.
• Once water ows, the plumbing system is ventilated and lled. Close all water-
release.
For the furnace to work properly, there must be enough LP gas (propane >11 in. wc) and 12
VDC power.
Switch on the furnace’s 12 VDC power supply.
1. If necessary, ll the water container with water (refer to “Filling the water container”).
If no hot water is needed, the Combi furnace can be operated without being lled.
2. Make sure the supply of LP gas is turned on at the tank.
3. Make sure the gas shut-o valve is switched on.
4. Use the CP plus control panel to switch on the Combi.
There may be a variation between the temperature delivered from the Combi furnace and
the temperature at the faucet due to water conditions or the length of pipe from the Combi
furnace. The presence of a ow restrictor in the hot water line may limit the water ow.
If using hot water, use the CP plus control panel to select the desired water tem-
perature level.
To obtain the desired water temperature at the faucet or in the shower, mix cold
and hot water.
Make sure that the water temperature has stabilized before any person or animal
enters the shower.
To operate the Combi furnace in potentially freezing conditions, the following are required:
1. There must be sucient LP gas (propane; fuel inlet pressure 11 – 13 in. wc (27.4 – 32.4
mbar) in the tank.
2. For hot water operation, the water container must be lled. You must leave the furnace
powered ON whenever freezing might occur.
Water temperatures over 125 ºF (49 ºC) can cause severe burns or scald-
ing and in extreme cases even death.
Before using a hot water faucet or using the shower, mix with cold wa-
ter and allow the hot water to run until the water temperature no longer
increases.
Ventilation area can reach 250 ºF (121 ºC) at the warm air outlet and can
cause severe burns or scalding, and in extreme cases even death.
Always check the air temperature before varying the air throttle position.
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