E93.1001EN.C Manual CD
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9.3
Water heater and tank: connections and connection sizes
C
ONNECTING THE TANK TO THE WATER HEATER
•
Connect the
pump
by means of couplings and a piece of copper pipe to connection A of the water heater
(note the flow direction of the pump).
•
Connect the inlet of the pump to the
upper
of the two close above each other located connections of the tank,
labelled ‘return to water heater’.
•
Connect connection B of the water heater to the
lower
of the two close above each other located connections
of the tank, labelled ‘flow from water heater’. Also make a tap point in this line at the lowest point.
WATER HEATER CONNECTIONS
A = inlet cold water
B = outlet hot water
C = overpressure safety valve
D =
gas
T
O CONNECT THE TANK TO YOUR
DHW
INSTALLATION
(see picture on next page
→
)
•
Connect the fresh water supply to the
single
connection C, labelled ‘cold in’, opposite to A and B which were
used for connecting the water heater. For the application of inlet combination, (control) valves, etc. all appli-
cable regulations should be met.
•
Connect the DHW connection on top of the tank, labelled ‘hot out’, to your DHW installation.
•
Connect the recirculation line to connection F, labelled ‘circulation return’, on the side of the tank, at the same
height as inlet C.
The EHS tanks have the following DHW connections:
•
COLD IN for inlet of fresh water
•
HOT OUT for outlet of DHW
•
water heater return for connection to inlet of water heater
•
water heater flow for connection to outlet of water heater
•
CIRCULATION RETURN for recirculation of DHW from installation to tank
Besides there are connections for:
•
Thermometer (on side on ± ¾ of height of the tank)
•
Connection for T&P valve (mounted on top) according to the applicable standards and regulations. Even
if a T&P valve has to be applied, the safety at the water heater’s side, on position C (
←
see previous
page), should be maintained at all times.
