HYDRAULIC AND ELECTRIC ASSEMBLY
HYDRAULIC ASSEMBLY
Please familiarize yourself with the electrical and hydraulic diagram, as
well as technical data prior to assembly. Details on www.elterm.pl
Boilers EKW AsZN-W, AsD-W, AsB II are hanging vertical devices and should be
hung on bolts. First, remove the cuboidal casing (unscrew the sheet metal screw
at the bottom of the boiler).
HUW tank (supplied with AsD-W boiler) should as well be hung on bolts.
Boiler EKW AsDC-W is a standalone device. HUW tank is build-in into boiler.
I – HYDRAULIC ASSEMBLY
A –AsZN-W (¾” male thread half union for CH pump – supplied with boiler)
1. Feed stub pipe ¾” male thread – on the boiler’s right side (no. 13)
2. Return stub pipe ¾” female thread – on the boiler’s left side (no. 14)
B – AsB II 27 ÷ 48 (1” male thread half union for CH pump – supplied with boiler)
1. Feed stub pipe 1” male thread – on the boiler’s right side (no. 13)
2. Return stub pipe 1” male thread – on the boiler’s left side (no. 14)
C – AsB II 54 ÷ 144
1. Feed stub pipe 1” male thread – on the boiler’s right side (no. 13)
2. Return stub pipe 1” male thread – on the boiler’s left side (no. 14)
D –AsD-W (¾” male thread half unions for CH and HUW pumps – supplied with boiler)
1. Feed stub pipe ¾” male thread – on the boiler’s right side (no. 13)
2. Return stub pipe ¾” male thread – on the boiler’s left side (no. 14)
3. Return stub pipe for HUW ¾” male thread – in the middle (no. 21)
5
EKW AsD-W BOILER
c
11:5 3:33 12 0 5 2 01 1 czw
c
123 45 6
ESC
ON
OFF
ONE-WAY
VALVES
CH HUW
SUPPLY
RETURN
E –EKW AsDC-W
All male threads ¾” (top view)
80
60
60
50
120
ATTENTION! Concerns AsD-W only
One-way valves are mandatory while assembly AsD-W boiler. Lack of
such valves on CH and HUW return causes inappropriate boiler and
pump operation as well as loss of guarantee.
One-way valves are not supplied with boiler.
ATTENTION! Concerns AsDC-W only
One-way valves for CH and HUW are factory assembled.
Safety valve is not included.
circulation
The boiler has to be connected to the central heating system using the ¾” or 1” pipe
unions according to the direction of water flow (arrows on boiler). Connection to be
made in accordance with PN-91/B-02413 (open central heating systems) or
PN-91/B-02414 (closed central heating systems.). The central heating system has to be
flushed prior to start-up. If installed outside Poland, the boiler ought to be connected in
accordance with the applicable regulations valid in the country where the boiler is
installed.
CH
HUW water
inflow
cold water
inflow
CH
