7
Hot Water Storage Tank with Coil
WTB 220-400
Chapter 3 |
Chapter 4 |
Installation
Connection and start-up
1.
Open the cold water cut-off valve at the inlet and
the hot water intake point.
2. Fill the storage tank until obtaining uniform water
outfl ow at the hot water intake point. Close the
intake points.
3. Fill the coil with the heating medium, and vent it.
4. Check tightness of the entire system.
When properly fi lled and vented, the storage tank is
ready to use.
After the installation and levelling the tank, follow the
procedure below (for the connector pipe numbers,
refer to Fig. 3):
Fill the storage tank with water and vent it after ma-
king correct connections.
1. Remove protecting plugs from the connector
pipes
2. Connect the hot water intake line (XL4).
3. Connect the cold water supply line together with
the required safety valves (XL3).
4. If the system has the hot water circulation
system, connect it to the connector pipe (XL5).
Otherwise, plug the pipe.
5. Connect the supply (XL8) and return (XL9) of
the heating medium to the coil.
In order to minimize thermal energy losses, insulate
all connector pipes, pipelines and temperature sensor
covers thoroughly after the installation of the unit and
performance of the leak proof test. For this purpose,
use thermal insulation of correctly selected thickness
and thermal insulation parameters.
Filling and venting the hot water storage tank:
4 Connection and
start-up
Connection
Start-Up
Thermal Insulation of the System
Fig. 7
Installation diagram of the WTB storage tank
with one coil.
DHW
hot water
circulation
supply of the
coil
return from
the coil
to sewerage
water supply
system
CP1
WTB storage tank.
QM30 Cut-off valve - hot water outfl ow.
QM31 Cut-off valve - coil supply
QM32 Cut-off valve - coil return
QM33 Cut-off valve - hot water circulation
QM35 Cut-off valve - cold water intake
FL1
Safety valve.
QM1 Drain valve.
PR1
Pressure reducer (option, if the pressure in
the system exceeds the allowable value).
HQ1 Strainer fi lter.
GP11 Hot water circulating pump.
GP12 C/H circulating pump.
CM1 Hot water expansion vessel.
CP1
QM30
QM33 GP11
HQ1
QM33
QM31 GP12
HQ1
QM31
CM1
FL1
QM32
QM1
PR1 QM35
NOTE
Lack of thermal insulation, its incorrect thick-
ness or insulation made of inadequate mate-
rials will cause decrease of thermal insula-
tion properties of the system.
NOTE
We recommend connecting the tank con-
nector pipes with the system lines by me-
ans of unions to allow disconnection of the
tank, if required.
Caution
The storage tank connections may not be
made of materials more precious than car-
bon steel due to the increased electrochemi-
cal corrosion. This applies to connector pipes
(fi ttings) contacting the tank connector pipe
thread. Preferably, use galvanized pipe con-
nectors (fi ttings.)
Caution
Open the hot water intake valves before he-
ating the system up for the fi rst time or after
a longer break in its operation in order to
check whether the storage tank is fi lled with
water and the cut-off valve at the cold water
inlet is not closed.
Caution
If there is an electric heating module installed
in the storage tank, fi ll the tank with water be-
fore connecting it to the electrical installation.