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7.2.2 Boiler with heat pump boiler
The boiler is suitable for use in combination with a heat pump
unit.
If the outlet temperature of a heat pump boiler is lower than
55°C, then the Intergas Xclusive will create a demand to
increase this depending on the boilers target temperature
setting.
Operational principle:
The domestic hot water outlet connection of the heat pump
unit is connected to the input of the thermostatic mixing valve
(see the adjacent diagram). If the DHW temperature of the
boiler is higher than the set temperature of the mixing valve,
the heat pump boiler will be stopped. (The mixing valve does
not fully close, a small amount (approximately 10%) will
always pass through the Intergas Xclusive.
As soon as the outlet temperature of the heat pump unit
becomes lower than the set temperature of the mixing valve,
the flow through the Intergas Xclusive will increase. If the flow
becomes suicient > 2.5lts/min then the Intergas Xclusive boiler
will start producing domestic hot water.
When the outlet temperature of the heat pump unit has
become lower than the set temperature of the mixing valve
< 12°C, almost the entire domestic hot water flow diverts
through the Intergas Xclusive. This time approximately 10% of
the flow is now taken from the heat pump unit.
The domestic hot water flow rate will be limited to the
maximum possible through the Intergas Xclusive (see §7.2.1).
A. Heat pump unit
B. Xclusive Boiler
C. Mixing valve (Set to 55°C) max 60°C
D. Mains cold water inlet (service valve required)
E. DHW outlet from heat pump unit
F. DHW outlet (mixed supply) for consumer
Connection diagram for Xclusive boiler with heat pump unit
Installation:
The combination must be configured according to the adjacent
connection diagram. The following points are important to
guarantee a correct operation of the combination.
Thermostatic mixing valve (switched):
The thermostatic switch valve used is a modified valve that
meets the specific requirements to which the combination heat
pump boiler and Intergas Xclusiveare subject. For the correct
operation of the combination, the switch valve has a fixed
maximum temperature setting.
A
B
C
D
E
F
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