Инструкции По Установке для Saunier Duval THEMA F 23 E
8
HEATING SYSTEM DESIGN
Diagram 6
• The THEMA F boiler is compatible with any type of
installation.
• Heating surfaces may consist of radiators, convec-
tors or fan assisted convectors.
• Pipe sectional areas shall be determined in accord-
ance with normal practices, using the output/pres-
sure curve (diagram 3). The distribution system shall
be calculated in accordance with the output require-
ments of the actual system, not the maximum output
of the boiler. However, provision shall be made to
ensure sufficient flow so that the temperature differ-
ence between the flow and return pipes be less than
or equal to 20
installation.
• Heating surfaces may consist of radiators, convec-
tors or fan assisted convectors.
• Pipe sectional areas shall be determined in accord-
ance with normal practices, using the output/pres-
sure curve (diagram 3). The distribution system shall
be calculated in accordance with the output require-
ments of the actual system, not the maximum output
of the boiler. However, provision shall be made to
ensure sufficient flow so that the temperature differ-
ence between the flow and return pipes be less than
or equal to 20
°
C. The minimum flow is 500 l/h.
• The piping system shall be routed so as to avoid
any air pockets and facilitate permanent venting of
the installation. Bleed fittings shall be provided at
every high point of the system and on all radiators.
• The total volume of water permitted for the heat-
ing system depends, amongst other things, on the
static head in the cold condition.
The expansion vessel on the boiler is pressurised at 1
bar (corresponding to a static head of 5 m w.g.) and
allows a maximum system volume of 140 litres for an
average temperature of 75
any air pockets and facilitate permanent venting of
the installation. Bleed fittings shall be provided at
every high point of the system and on all radiators.
• The total volume of water permitted for the heat-
ing system depends, amongst other things, on the
static head in the cold condition.
The expansion vessel on the boiler is pressurised at 1
bar (corresponding to a static head of 5 m w.g.) and
allows a maximum system volume of 140 litres for an
average temperature of 75
°
C and a maximum serv-
ice pressure of 3 bar. This pressure setting can be modi-
fied at commissioning stage if the static head differs.
fied at commissioning stage if the static head differs.
An additional expansion vessel can be fitted to the
system if required, see diagram 6.
• Provision shall be made for a drain valve at the
lowest point of the system.
• Where thermostatic radiator valves are fitted, not
all radiators must be fitted with this type of valve, and
in particular, where the room thermostat is installed.
• In the case of an existing installation, it is ESSENTIAL
that the system is thoroughly flushed prior to installing
the new boiler using a proprietary product such as
Fernox or Sentinel. Contact the product manufac-
turers for specific details.
system if required, see diagram 6.
• Provision shall be made for a drain valve at the
lowest point of the system.
• Where thermostatic radiator valves are fitted, not
all radiators must be fitted with this type of valve, and
in particular, where the room thermostat is installed.
• In the case of an existing installation, it is ESSENTIAL
that the system is thoroughly flushed prior to installing
the new boiler using a proprietary product such as
Fernox or Sentinel. Contact the product manufac-
turers for specific details.
Filling the system
Provision must be made for filling the system at low
level. The use of a WRC approved filling loop is strongly
recommended, connected as shown in diagram 6.
Provision must be made for filling the system at low
level. The use of a WRC approved filling loop is strongly
recommended, connected as shown in diagram 6.
Safety valve discharge
WARNING. It must not discharge above an en-
trance or window or any type of public access
area.
Connect the safety valve discharge pipe to the
boiler, the discharge must be extended using not
less than 15 m o.d. pipe, to discharge in a visible
position outside the building, facing downward
preferably over a drain. The pipe must have a con-
tinuous fall and be routed to a position so that any
discharge of water, possibly boiling or steam, can-
not create any danger to persons, damage to
property or external electrical components and
wiring. Tighten all pipe connection joints.
WARNING. It must not discharge above an en-
trance or window or any type of public access
area.
Connect the safety valve discharge pipe to the
boiler, the discharge must be extended using not
less than 15 m o.d. pipe, to discharge in a visible
position outside the building, facing downward
preferably over a drain. The pipe must have a con-
tinuous fall and be routed to a position so that any
discharge of water, possibly boiling or steam, can-
not create any danger to persons, damage to
property or external electrical components and
wiring. Tighten all pipe connection joints.
Gas connection
• The supply from the governed gas meter must
be of adequate size to provide a constant inlet
working pressure of 20 mbar (8 in w.g.).
To avoid low gas pressure problems, it is recom-
mended that the gas supply is connected using 22
mm pipe.
• On completion, the gas installation must be
tested using the pressure drop method and purged
in accordance with the current issue of BS6891.
• The supply from the governed gas meter must
be of adequate size to provide a constant inlet
working pressure of 20 mbar (8 in w.g.).
To avoid low gas pressure problems, it is recom-
mended that the gas supply is connected using 22
mm pipe.
• On completion, the gas installation must be
tested using the pressure drop method and purged
in accordance with the current issue of BS6891.
Gas Safety (Installation and Use) Regulations
In your interests and that of gas safety, it is the law
that ALL gas appliances are installed and serviced
by a competent person in accordance with the
above regulations.
In your interests and that of gas safety, it is the law
that ALL gas appliances are installed and serviced
by a competent person in accordance with the
above regulations.
Flow
control valve
Drain point
Filling point
Bypass
valve
Minimum 22 mm diameter
Tundish
(supplied)
(supplied)
Pressure
reducing
valve
(supplied)
reducing
valve
(supplied)
Domestic
water
Heating
circuit
circuit
Return
Additional
expansion
vessel
(if required)
expansion
vessel
(if required)
Boiler
Hot
Cold supply
Sch 173
• Heating system connections - Pipe diam 22 mm
• Hot water system connections - Pipe diam 15 mm
• Gas connection - Pipe diam 22 mm
• Safety valve discharge - Pipe diam 15 mm
• Hot water system connections - Pipe diam 15 mm
• Gas connection - Pipe diam 22 mm
• Safety valve discharge - Pipe diam 15 mm
Water connection
Connect the water pipes to the fixing jig using the
copper tails supplied, see diagram 5.
Warning: To prevent damage to the isolating cocks,
do not solder joints or fittings with the copper tails
connected.
Connect the system pipework to the boiler observ-
ing the correct flow and return format as shown in
diagram 6.
Connect the water pipes to the fixing jig using the
copper tails supplied, see diagram 5.
Warning: To prevent damage to the isolating cocks,
do not solder joints or fittings with the copper tails
connected.
Connect the system pipework to the boiler observ-
ing the correct flow and return format as shown in
diagram 6.
PIPING SYSTEM INSTALLATION