Minimum Clearances; Installation; Water Connection - STIEBEL ELTRON accelera 220 e Operation And Installation Manual

INSTALLATION

Installation

10.5 Minimum clearances

Minimum room volume:
800 ft 2 , 10´ x 10´ x 8´
2
(22.7 m , 3 m x 3 m x 2.4 m)
Air flow
exhaust
6´
(1.8 m)
42˝ (220 E)
60˝ (300 E)
Acceptable positioning, vent parallel to a wall:
6´
(1.8 m)
Air flow
exhaust
Acceptable positioning, vent parallel to a wall in a corner:
8˝
(0.2 m)
Air flow
intake
2´
8˝
(0.6 m)
(0.2 m)
2´
(0.6 m)
6´
Air flow
(1.8 m) exhaust
 Maintain the minimum clearances. 
Material losses
!
The top of the appliance should be made horizontal.
 Level the appliance horizontally using the height-ad- 
justable feet.
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14˝
(0.4 m)
Air flow
intake
2´
(0.6 m)
8˝
(0.2 m)
2´
(0.6 m)
Air flow
intake
11. Installation
WARNING Injury
!
Incorrect installation can lead to serious personal injury
or material losses.
Before any work, ensure suffi cient clearances for the
installation.
Handle sharp-edged components carefully.

11.1 Water connection

Material losses
!
Carry out all water connection and installation work in
accordance with local plumbing regulations.
The following material combinations are approved for pipework
installations:
Cold water inlet
Copper pipe
Steel pipe
PEX tubing
 Thoroughly fl ush the pipework before connecting the ap- 
pliance. Foreign bodies, such as welding pearls, rust, sand
or sealant can impair the operational reliability of the
appliance.
Material losses
!
To protect the connection nipples against corrosion the
water tube connection must be made with plumber's
thread seal tape (PTFE). The use of hemp on nipple
threads is not permissible due to risk of corrosion.
11.1.1 Safety valve
The appliance is a sealed unvented DHW tank. The appliance is
supplied with a temperature and pressure relief valve that has
been factory installed and leak-tested.
 Install a type-tested safety valve in the cold water supply 
line. The response pressure of the safety valve must be below
or equal to the permissible operating pressure of the DHW
tank.
The safety valve protects the appliance against unacceptable ex-
cess pressure.
 Ensure that the expansion water escaping from the safety 
valve can drip into a drain, e.g. a tank or sink.
Ensure the drain cannot be shut off.
 Size the drain in a way that water can drain off unimpeded 
when the safety valve is fully opened.
 Ensure that the discharge pipe of the safety valve is open to 
atmosphere.
 Fit the discharge pipe of the safety valve with a constant 
downward slope and in a room free from the risk of frost.
DHW outlet
Copper pipe
Steel pipe or copper pipe
PEX tubing
Accelera® 220-300 E | 21