Adjusting The Heating Water Temperature Without An Outdoor Temperature Sensor Connected; Adjusting The Heating Water Temperature With An Outdoor Temperature Sensor Connected; Adjustment Of The Domestic Hot Water Temperature - Carrier BWCAAG000120 Installation & Operating Instructions Manual

− When there is a heat request and the boiler has ignited, the " "
icon appears on the display. The boiler will start-up and continue
working until the set temperatures are reached, after which it will
then go back to standby.
DHW ONLY : press the "MODE/OK" button until the faucet
symbol appears to select the DHW ONLY mode, the domestic hot
water mode is now activated. The display normally shows the DHW
temperature.
With the heating only boilers the function is active only with an
indirect tank.
The user interface normally displays the temperature of the
domestic hot water stored in the indirect tank (only when using an
indirect tank sensor).
When using an indirect tank with aquastat or a domestic hot water
request in progress, the boiler delivery temperature is displayed.
CH&DHW : press the "MODE/OK" button repeatedly to
select both the faucet and radiator symbol indicating the boiler is
in the CH (central heating) & DHW (domestic hot water) mode,
the central heating and domestic hot water modes are now both
active. The display normally shows the domestic hot water delivery
temperature unless a call for central heating is made in which case
it will show the actual supply temperature to the heating system.
136°F
136°F
136°F
136°F
11 .7 Adjusting the heating water temperature without
an outdoor temperature sensor connected
When there is no outdoor temperature sensor, the boiler operates
at a fixed setpoint. If the central heating mode is active, to adjust the
central heating temperature rotate the knob until the "
highlighted. Rotate the knob to change the setpoint value.
After few seconds the value will be confirmed automatically.
NOTICE: It is recommend to use the included Outdoor Temperature
Sensor with the boiler to conserve energy. Not doing so, depending
on the application, could be in violation of local codes. Installation
of this sensor is also a Department of Energy requirement for
space heating.
11 .8 Adjusting the heating water temperature with an
outdoor temperature sensor connected
When an outdoor temperature sensor is installed, the outlet
temperature is automatically selected by the system, which quickly
adjusts the ambient temperature according to the variations in
the outdoor temperature. If you want to change the temperature,
raising it or lowering it with respect to that automatically calculated
by the electronic board, it is possible to change the central heating
setpoint by rotating the knob with the "
desired comfort level (see section "11.12 Setting the outdoor reset
curve with an outdoor sensor" page 50) within the range 59-77°F
(15-25°C) from the environment temperature 68°F (20°C).
Wait for two seconds from the last rotation, then the value will be
confirmed and the display come back to the main page.
NOTICE: when there is an outdoor temperature sensor connected
it is still possible to have the boiler operate at a fixed setpoint by
setting the values of the MINIMUM CH SETPOINT and MAXIMUM
CH SETPOINT at the desired HEATING setpoint.
11 .9 Adjustment of the domestic hot water
temperature
To adjust the domestic hot water temperature (bath, shower,
kitchen, etc.) rotate the knob with the " " symbol. Rotate the knob
to change the setpoint value. Wait for two seconds from the last
rotation, then the value will be confirmed and the display come
back to the main page.
For heating only boilers:
- EXAMPLE A: heating only with tank thermostat: in this condition,
the boiler delivers hot water to the water tank whenever a
demand is made by the relative thermostat (default for BWH
model)
- EXAMPLE B: heating only with tank sensor and sliding outlet:
in this case, the outlet setpoint in a DHW request is no fixed at
120°F (49°C) but variable
- EXAMPLE C: heating only with tank sensor and fixed outlet: this
setting performs a modulation to a fixed outlet value of 120°F
(49°C) when there is a DHW request.
If the water heater is not supplied by our company, make sure that
the relative indirect tank sensor (NTC sensor) has the following
characteristics: 10 kOhm at 77°F (25°C), B 3435 ±1% or use
KBANT0101111 kit.
46
172°F
" symbol and selecting the
" symbol