26
4 217 901 / 02
TECHNICAl INFORMATION
4.6.2.2 Cascades
As a basic principle, the Hoval TopTronic
®
E should per-
form cascade control. This ensures an environmentally
and product-friendly method of operation. However, if an
external cascading strategy is planned and boiler perfor-
mance control is carried out, frequent cycles should be
avoided (at least 12 minute burner runtime).
Please observe the notes in the engineering
documents of the responsible Hoval sales
company with respect to the appropriate hy-
draulic switching!
4.7
Noise damping
The following measures are possible for sound insulation:
• If living areas are above or below the boiler room, make
the boiler room walls, ceiling and floor as solid as pos
-
sible.
•
Connect pipes flexibly using expansion joints.
• Connect circulating pumps to the piping network using
expansion joints.
4.8
Electrical connection
• A licensed electrical company must install
the electrical supply to the equipment.
• The connection diagram is located in the
electrical box of the heat generator; the cir-
cuit diagram is supplied separately.
•
The country-specific regulations must be
adhered to.
WARNING
The heat generator can only be de-energised
by disconnection from the mains (e.g. all-po-
le switch).
WARNING
All electrical power supply circuits must be
switched off before accessing the terminals.
Use cable ducts with separators.
The electrical connection must be established
in accordance with the applicable standards
of nationally or internationally recognised pro-
fessional associations.
Procedure to remove the front casing
1.
Remove front cover (1, image 18) after first releasing
the lateral locking bolt (1a) (turn approx. ¼ turn to the
left and pull out as far as the stop). Lift the front cover
(1) straight upwards and remove towards the front.
2. Slightly raise the lower front cover (2), slight lift the
front cover (2) and remove towards the front.
3. Remove securing screw (3).
4. Lift the electrical box (4) and fold it out.
- The safety cord (4a) secures the electrical box.
5. Cable introduction according to dimensional drawing
(chapter 3.4 dimensions, no. 6).
The electrical connection is to be made in accordance
with the diagram supplied.
Frontbild
27.08.2018 / O.Müller
4217901
Fig. 19
4
1
1 a
2
3
4 a
4 a
Содержание UltraGas 1550
Страница 47: ...47 4 217 901 02...
