EFM Heating VT 700 E - Piping Diagrams

7
14
8
k
l
n
MAKE UP
WATER
9
n
n
3
n
2
n
1
n
6
n
7
k
n
OPEN DISCHARGE
PIPING TO DRAIN
m
m
S
UPPLY TO
H
EATING CIRCUITS
5
R
ETURN FROM
HEATING CIRCUITS
l
MAKE UP
WATER
1
4
8
n
9
n
n
2
n
1
n
6
n
7
k
n
OPEN DISCHARGE
PIPING TO DRAIN
m
S
UPPLY TO
HEATING CIRCUITS
5
RETURN FROM
HEATING CIRCUITS
l
l
m
12
n
l
l
4
n
13
4
n
l
l
k
HOT WATER OUTLET
n
TO
DISHWASHER
TEMPERED
HOT
W
ATER
COLD WATER
SUPPLY TO COIL
k
k
k
TEMPERING/
MIXING
V
ALVE
n
PIPING DIAGRAMS
Figure 5
Note: the circulator may be located on
the supply side piping if desired.
Figure 6
By-Pass Piping Figure 7
TANKLESS WATER
HEATER PIPING
LEGEND
1. FLOW CHECK VALVE
2. PRESSURE RELIEF VALVE
3. CONVENTIONAL EXPANSION TANK
4. AUTOMATIC AIR VENT
5. BALANCING COCKS
6. DRAIN VALVE
7. CIRCULATOR
8. PRESSURE REDUCING VALVE
9. SHUT OFF VALVE
10. TEMPERING VALVE
11. FLOW REGULATOR
12. AIR PURGER
13. EXPANSION TANK (PRESSURIZED)
14. AUTOMATIC REFILL
14
8
k
n
MAKE UP
WATER
9
n
n
3
n
2
n
1
k
n
OPEN DISCHARGE
PIPING TO DRAIN
m
m
SUPPLY TO
HEATING CIRCUITS
l
n
6
n
7
5
RETURN FROM
HEATING CIRCUITS
l
BY-PASS