Connecting The Tank On The Water Side; Installing A T&P Safety Valve (On-Site); Installing The Dhw Water Temperature Sensor (Accessory) Or Aquastat (Accessory) - Buderus SM80/5 Instrucciones De Mantenimiento Y De Instalación

5
Installation
5.2.1

Connecting the tank on the water side

Example of system with all recommended valves ( Fig. 12, page 12).
▶ When selecting the expansion vessel for the hot water side, take the
content of the heat exchanger and DHW tank into consideration.
▶ Route the connection cables for the tank temperature sensors at the
back of the tank through the insulation to the heating appliance or
controller.
▶ Install piping runs so that natural circulation is prevented. If
necessary, install check valves.
▶ Install connection cables free of stress.
▶ Attach piping to the tank connections on-site.
▶ Check all connections for leaks.
1
1
Fig. 12 Installation (illustrative)
[1] Storage tank
[2] Shutoff valve
[3] P&T safety valve (combined with hot water outlet)
[4] Check valve
[5] Tank primary pump
[6] Recirculation pump (optional)
[7] Air eliminator (in main supply)
[8] Drain valve
[9] Expansion vessel
[10] Thermostatic DHW mixing valve
[11] Tank primary pump
[12] Solar pump station
[AW] DHW outlet
[EZ] Recirculation inlet
[VS1] Tank supply (solar)
[RS1] Tank return (solar)
[VS2] Tank supply (boiler)
[RS2] Tank return (boiler)
[EK] Cold water inlet
[EL] Tank drain
12
5.2.2
▶ Install a listed T&P safety valve that is approved for drinking water
( ¾ ")in the DHW outlet.
▶ This DHW tank must be installed with a new T&P safety valve.
▶ The T&P valve must be sized no smaller than the rated tank capacity.
▶ Observe the safety valve installation instructions.
▶ T&P discharge pipe:
– The blow-off line must be at least equal to the outlet cross-section
of the safety valve.
– Route the blow-off line from the T&P valve directly to an adequate
drain (maximum length 6 ft (2 m) with no more than two 90°-
elbows).
– The discharge line must terminate at an adequate drain in order to
prevent property damage from spillage.
– Check that the T&P safety valve operates properly at least once
annually.
▶ Never plug the blow-off line. During heating, water may be
discharged for operational reasons at any time.
Fitting the B-kit
6 720 800 155-11.1ITL
Fig. 13 Connecting the DHW tank components
[1] Tee 1" x 1" x 3/4" (2x) with T&P safety valve
[2] 3/4" cap for recirculation connection
[3] Bracket with Aquastat
[4] Tee with fill and drain valve
5.3
Installing a T&P safety valve (on-site)
Installing the DHW water temperature sensor
(accessory) or Aquastat (accessory)
DANGER: Risk of fatal injury from electric shock.
▶ Isolate the system electrically prior to commencing
work on the system.
SM80/5, SM100/5 – 6 720 800 156 (2017/07)
6 720 800 155-05.1ITL