General Information - Bradford White ERE240 Service Manual

INFORMATION
CTA 2045 (For Applicable Models)
Caution
THE CTA CONNECTOR HAS LIVE LINE VOLTAGE POWERED PINS. POWER OFF WATER HEATER
BEFORE INSTALLING CTA UNIVERSAL COMMUNICATION MODULE (UCM).
Some controls are equipped with a CTA 2045 port which enables the ICON E™ system to communicate with a
Universal Communication Module (UCM). Your local electrical utility provider may offer a Demand Response
Management (DRM) program that allows your provider to offload power into your water heater or to temporarily
delay the recovery of the water heater in order to help regulate demands on the power grid. This system, if used, will
interact with your water heater in one of two ways. First is the Load-Up command, which will make sure that your
water heater fully recovers to setpoint. Second, it can issue a Load Shed command. A Load Shed command may
cause the water in the tank to cool off more than it normally would before recovering, potentially resulting in less
available hot water. You will be able to tell if the water heater is operating in a Load Shed command by looking at
the status LED. If you see a flash pattern of 6 amber flashes followed by a 4 second off period, the control is
operating under a Load Shed command. If this performance is undesirable and you would like to temporarily
disable it, move the Setpoint knob to some other temperature and then return it to the desired setpoint. . This
will allow the water heater to operate normally for 72 hours.
DRM programs offered by electric utility providers typically require that the water heater have a setpoint
temperature of 140 °F or higher. Water temperatures of 140 °F and above will scald in five seconds or less,
causing severe burns or even death. It is highly recommended that an ASSE approved thermostatic mixing valve
be installed when operating a water heater at these higher temperatures.
Note: When a mixing valve is installed, the temperature of the hot water delivered to the home is determined
by the mixing valve. If the hot water temperature is inadequately low, check the mixing valve first. There is a
setpoint adjustment mechanism on all mixing valves that adjusts the blend of hot water (from the water heater)
and cold water (from cold water pipes) that results in the hot water temperature delivered to the hot water
distribution pipes. If hot water at the tap is too cool, check and adjust the mixing valve to a hotter setpoint. If
water from the water heater is hot and the delivered hot water at the tap is cold, the mixing valve is likely the
cause.
Installation of CTA Module:
1) Turn off power to water heater
2) Remove CTA connector cover by removing the screws that attach the cover.
3) Plug UCM device into the CTA Port and attach to the water heater via screws provided with the UCM
4) Apply power to the water heater
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