Installation guide

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External or Internal Bosch Continuous Flow
Water Heater(s). Manifolded if required in
accordance with manufacturers
recommendations. PTR valves in accordance
with AG102 & as required by State
Regulations.
DIAGRAM 3. WATER MAINS PRESSURE plus PRIMARY CIRCUIT plus SECONDARY CIRCUITS
Pressure & Temperature
Relief Valve or Valves in
accordance with AG102
& as required by State
Regulations
Everlast C2 Accumulator
Tempering or Thermostatic Mixing valves as required
for Safety Temperatures in areas used primarily for the
purposes of personal hygiene as defined in AS3500 or
by Industry or local regulations
This design shows
3 building outlets
numbered 1, 2 & 3
for illustrative
purposes only
1
2
3
LEGEND :
Cold Water
Supply
Hot Water
Supply :
Primary
Circuit :
Secondary
Circuit :
Bosch
Model
17E or
21E or
25E or
32E
Cold Water Supply
Usually Mains
Pressure.
Non return
valve
500 kPa Pressure
Limiting valve
Isolating
valve
Thermostat
set to 60 –
70 C
240 V at C2 Accumulator
Provides pump power &
control via Thermostat.
Expansion
relief Valve
Non return
Valve
Primary
Pump.
Davey
SB30-25 or
equivalent
Isol. valve
60 Mesh
line strainer
Isol. valve
Non return Secondary Pump Isol. valve
Valve Davey SB25-20,
Grundfos 25-40B
or equivalent
Secondary pipework suitable
for drinking water purposes.
Constant thermal circulation as
required.