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10.2 - Connecting
the IB boiler to
an indirect water
heater
This boiler, can be connected to an
indirect water heater as follow:
1. The water connection must be
made per Figures 7-4 or 7-5.
2. The indirect water heater pump
(DHW pump) must be connected
to terminals “107” and “108” (See
Figure 10-4); a fi eld supplied pump
relay must be installed if the pump
current draw is grater than 3 amps
as indicated in Figure 10-4.
3. The indirect water heater
temperature sensor (Tank sensor)
must be connected to terminals
“12” and “13” (See Figure 10-4).
The sensor must be placed into the
indirect water heater in a way that
can detect its water temperature
(Follow the indirect water heater
instruction).
4.
Set the boiler so that it detects the
indirect water heater sensor, as
follows:
a. Gain access to the Factory menu
(see Section 19);
b. Set parameter 3012 to 1.
Follow Section 14.6 to set the desired
indirect water heater temperature.
WARNING!!!
Since the
indirect water heater temperature
sensor wires conduct 24 Vac,
they must never run through
conduits containing 120 Vac
power wires or an electrical
shock hazard will exist.
10.2.1 Indirect water
heater priority selection
The boiler is factory set for DHW
priority. This means that the boiler will
stay in DHW mode until the capacity
of the indirect water heater reaches
temperature. In some cases this will
result in the house cooling because
the central heating function was
stopped by the DHW priority mode.
Once the indirect water heater is
satisfi ed the boiler will automatically
return to central heating.
Priority selection is a functionality
that toggles between CH and DHW
demand when they are both active at
the same time. The priority selection
is set with the 2067 (DHW Priority)
parameter in the “Installers’ menu”
(see Section 14.14).
If parameter 2067 is set to “0” and a
call for heat and domestic water are
present at the same time, the boiler
will give priority to the indirect water
heater for the time period specifi ed
in parameter 2063. At the end of that
time period, the boiler will switch to
heating priority for the length of time
specifi ed in parameter 2063. If a call
for domestic operation is still present
the boiler will switch back to priority
mode for the indirect for the time
specifi ed in parameter 2063.
If parameter 2067 is set to “1” the
boiler will give priority to heating only.
If parameter 2067 is set to “2” the
boiler will give priority to indirect water
heater only.
10 - INSTALLATION - Electrical connections
10.3 - Connecting
the IW water heater
to a storage tank
The water heater must be connected
to a storage tank:
1. The water connection must be
made per Figures 8-5 or 8-6.
2. The storage tank pump (Local
pump) must be connected to
terminals “113” and “114” (See
Figure 10-5) (a fi eld supplied pump
relay must be installed if the pump
current draw is grater than 3 amps).
3. Remove header sensor present on
terminals “8” and “9” of Figure 10-5;
4. The storage tank temperature
sensor must be connected to
terminals “8” and “9” (See Figure
10-5). The sensor must be placed
into the storage tank in a way that
can detect the water temperature
(Follow the storage tank instruction).
Follow Section 14.5 to set the desired
storage tank temperature.
WARNING!!!
Since the
storage tank temperature sensor
wires conduct 24 Vac, they must
never run through conduits
containing 120 Vac power wires
or an electrical shock hazard will
exist.
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