Eco-King HWB-299, Installation And Service Manual

Page: 32 / 124

E93.1801EN171 HWB installation manual 32
8.1.2 C
ASCADE SET
-
UP
HWB water heaters and tanks can be installed cascaded in a number of possible combinations according to the
instructions below. Apply parameter configuration DHW-mode 1
PUMP
NON- RETURN VALVE
VALVE
SAFETY VALVE
AUTOMATIC AIR VENT
FILTER
INLET COMBINATION
- Overflow
- Controllable return valve
- Valve
PRESSURE REGULATING VALVE
Notes:
•
Connections on the water heater side should always be executed as drawn in the picture above.
•
1
Always apply safety components according to all applicable regulations.
•
3
In case of more than one tank, mount the tank sensor in one of the tanks. The temperature of this tank
will be assumed to be representative for all, provided that the installation design is correct.
•
In the inlet (return) connection of the water heater no check valve is recommended.
•
If needed, the water heater control can handle up to sixteen water heaters.
•
For large capacity installations consult your supplier.
Example of a combination of three water heaters and two tanks
Explanation:
1) Pressure relief valve (mandatory in case water pres-
sure is too high)
2) Inlet combination with valve (mandatory)
3) Apply filter if necessary (recommended)
4) A suitable safety valve must be mounted near the
water heater (mandatory)
1
This safety valve may never be isolated from the wa-
ter heater by means of a ball valve
5) Mount the tank sensor in an immersion bulb into the
tank at 1/5 from the bottom of the tank and the sys-
tem sensor onto the return pipe as shown in the fig-
ure.
2, 3
6) Drain valve (recommended)
7) Hot and cold-water mixers
8) Mount the (strap-on) system sensor to the pipe close
to the T-piece of the last tank as shown in the figure
This sensor measures the supply temperature from
both heaters.
A) Cold water inlet (service pipe)
B) Hot water supply circulation
C) Circulation return
4
DHW
SENSOR
SYSTEM SENSOR
5
8