29
CHAPTER 5
CHAPTER 5 - INSTINCT COMBI UNITS - DOMESTIC PIPING
5.3. Water Hammer
Dishwashers, clothes washers and fast-closing positive
shut-o valves incorporated in the system all contrib-
ute to creating water shock. Install a water hammer ar-
rester to prevent damage to pipes and appliances. See
device manufacturer’s instructions for application and
installation.
Water hammering within the domestic piping
system can cause premature failure of the do-
mestic circuit of the boiler. This type of failure is
NOT covered under warranty.
NOTICE
Fig. 16 - INSTINCT Combi - Hydro-block Flow Diagram
5.4. Vacuum Breaker
Installing a vacuum breaker on the domestic cold wa-
ter inlet will prevent damage to the domestic circuit if
a negative pressure is developed in the domestic sup-
ply line. See manufacturer’s instructions for application
and installation of the vacuum breaker.
5.5. Hydro-Block
The domestic circuit provides domestic hot water
through a hydro-block. It is made of a plate-to-plate
heat exchanger and connections to the primary and
domestic piping. Water heated in the primary circuit
(central heating) ows into the plate-to-plate heat ex-
changer, which in turn heats the domestic water ow-
ing through it in its own circuit. Refer to Fig. 16 below
for ow diagram.
CH SUPPLY
CH SUPPLY
CH RETURN
CH RETURN
to PUMP
DHW SUPPLY
DHW INLET
Flow Sensor
DHW Temperature Sesnor
1”
1” 3/4”
3/4”
1”
1”
Stepper motor + cartridge
Plate-to-plate heat exchanger
To Next Page
Loading...
Need help?
General
