8
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
safety instructions and General information
Fig 2: High capacity water heater model EH (2-tank configuration)
Legend - Fig. 1, Fig. 2a and Fig. 2b:
Warm water ... Hot water connection
Cold water ... Cold water connection
Z
... Circulation
see sections 3.5 and 4.10 for connection sizes
1* ...... Hot water tank
2* ...... flange 190 mm i.D.
3* ...... Heat exchanger
4* ...... Primary pump
(not included on Economizer ED)
5* ...... secondary hot water pump
6* ...... Shut-off valves
7* ...... Modulating control valve
8* ...... Microprocessor control unit
9 ...... Shut-off valves
10 ...... Circulation pump
11 ...... Fine filter
12 ...... test valve
13 ...... Pressure reducer
14 ...... Non-return valve
15 ...... Pressure gauge connection
16 ...... safety valve
17* ...... Galvanic isolating union
18* ...... Non-return valve
19* ...... Differential pressure sensor
20* ...... Dirt filter (
for steam
)
21* ...... Condensate drain and steam blocker
(
for steam
)
22* ...... Motorised control value (
for steam
)
t1* ...... temperature sensor Charge „on“
t2* ...... temperature sensor Charge „off“
t3* ...... temp. sensor, hot water charging temperature
t4* ...... temp. sensor, primary circuit delivery
T5 ...... Temp. sensor, primary circuit return (
optional
)
SV* ...... Pressure relief valve (
for steam-10bar
)
st ...... safety termostat
* = included in the scope of delivery
Ps
T1
1
M
9
11
12
13
14
15
Cold water
16
Drain
Heating
on
T4
T3
T5
3
5
19
Pp
8
4
7
18
6
9
9
11
SV
P1
P2
9
Air vent
17
9
14
10
9
Z
Warm water
Circulation
Scope of delivery
T2
1
Drain
17
Heating
off
9
Air vent
6
2
2
Heat exchanger
hot water output
(secondary)
Heat exchanger
cold water feed
(secondary)
Boiler circuit
feed (primary side)
Boiler circuit return
(primary side)
Ring heating line - return
Ring heating line - feed
