16
WATER SYSTEM DIAGRAM
Balanced cold water draw-of
f
HWS supply
Balanced HWS and MCWS to bathrooms, showers, cloakrooms, etc.
To space heating circuit Zone 1
1
2
3
4
5
6
7
MCWS to Kitchen (unbalanced cold mains supply)
Incoming Cold W
ater Main
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
26
25
24
27
Parts shown within dashed line are supplied
Back flow prevention
Device (if fitted)
NOTE: If a device that prevents backflow is installed on the cold water supply to the PR
V then a means of
accommodating expansion due to local warming of the pipe is recommended to be fitted between the Device and PR
V.
NOTE: A backflow prevention Device may include check valves, a water meter or an additional PR
V
29
28
30*
28
29
Discharge pipe to atmo
sphere
(see page “Installation
- Discharge”)
KEY
1
Heat Pump
13
Scale
Trap
25
Primary circuit draw off point
2
Cylinder
14
DHW
Circulating
Pump
26
Automatic
Air
Vent
3
FTC6 Controller
15
Flow Sensor
27
Diffe
rential Pressure Bypass V
alve
4
Immersion
heater
16
Primary
Pump
28
Strainer
5
3.5 bar Pressure reducing V
alve incorporating
17
Primary Expansion V
essel
29
Isolating V
alve
Strainer and Check V
alve (supplied loose)
18
Primary Pressure Relief valve
30
Air V
ent* -
6
8 bar Expansion V
alve and Check V
alve
19
Magnetic Filter
7
DHW Expansion V
essel (supplied loose)
20
Primary System Pressure Gauge
8
Stop Cock
21
3 W
ay Motorised Diverter V
alve
9
Mains Stop Cock
22
Low Loss Header incorporating ports for
10
Tundish
2nd heating zone and alternative heat source
11
Temperature/Pressure relief V
alve
23
Heating Pump
12
Plate to Plate Heat Exchanger
24
DHW Drainoff point
if the outdoor unit is higher than
the indoor unit or if there is a location where aire gets trapped in the upper part of the water pipe consider adding this part
