MDC ROBSON XTT - Operating Instructions; How the appliance works

www.mdcusa.com Ph: 833 632 8721
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Operating Instructions
Read and follow the “Consumer Safety Information” before operating the appliance.
Scalding injuries caused by hot water!
Water temperatures over 127ºF (52ºC) can cause severe burns or scalding and
in extreme cases even death.
• Before using the hot water faucet or using the shower, allow the hot water
to run until the water temperature no longer increases.
• Test the temperature of the water before placing a child in the bath or
shower.
• Do not leave a child or an inrm person in the bath unsupervised.
WARNING
How the appliance works
The appliance was developed exclusively for use in recreational vehicles (RVs).
The appliance is connected between the vehicle’s fresh water supply and its hot water plumbing system.
It is powered by propane and a 12 V power supply. The ventilation grille on the access door allows combustion air to
ow into the appliance and exhaust gas to ow out.
When the appliance is switched on, the water will be heated on demand:
• A volume-ow sensor in the appliance detects when the hot water faucet has been opened and the volume ow
is greater than approximately 0.4 gallons/min (1.5 liter/min). The burner then starts automatically.
• The burner control continuously adjusts the heater output based on volume ow and inlet water temperature,
so that the temperature at the hot water outlet is approximately 120 °F (49 °C). A temperature stabilizer is also
installed in the appliance to minimize uctuations of the outlet temperature.
• After some time the maximum temperature at the faucet or in the shower is reached. The length of time
will depend on the model (AquaGo basic, AquaGo comfort and AquaGo comfort plus) and variations
in the water plumbing (length of pipes, insulation, circulation line, etc.). Like in a home shower, a
comfortable water temperature at the shower head is reached by mixing in cold water.
• When the volume ow is less than approximately 0.4 gallons/min (1.5 liter/min) and the faucet is closed, the
burner is automatically switched off.
The AquaGo comfort and AquaGo comfort plus models are equipped with a circulation pump. The circulation pump as
well as the burner are switched on automatically by the control unit in order to keep the water temperature above 102
°F (39 °C) in “COMFORT” mode and 41 °F (5 °C) in “ECO” mode.
Risk of damage in frost conditions. Refer to “Operation in frost conditions”
NOTICE