INSTALLATION INSTRUCTIONS
19
3.4 Water connections
In order to safeguard the heat exchanger and
circulation pump, especially in case of appliance
replacement, it is recommended that the system is
hot-flushed to remove any impurities (especially oil
and grease) from the pipes and radiators.
In order to safeguard all waterside components the
supplied Fernox Commissioning Kit Must be used
in its entirety.
Make sure that the domestic water and central
heating pipes are not used to earth the electrical
system. The pipes are totally unsuitable for this
purpose.
Isolation Valves must be installed on the heating
and D.H.W circuits. This will facilitate all
maintenance and service operations where the
appliance needs to be drained.
To prevent vibration and noise coming from the system,
do not use pipes of reduced diameter, short radius
elbows or severe reductions in the cross sections of the
water passages.
In order to guarantee the reliability of the boiler a
pressure reducing valve and backflow preventer must
be installed.
To facilitate the installation, the boiler is supplied with
an hydraulic connection kit (see fig.2).
A pressure relief valve is installed in this dual purpose boiler
that is rated in accordance with and complying with either
The Standard for relief Valves and Automatic Shutoff
Devices for Hot Water Supply Systems, AINSI Z21.22 or
The ANSI/ASME Boiler and Pressure Vessel Code, Section
IV (Heating Boilers).The relief valve must be
installed such that the discharge will be conducted to a
suitable place for disposal when relief occurs. The
discharge line must be installed to allow complete drainage
of both the valve and the line. If this unit is installed with a
separate storage vessel, the separate vessel must have its
own temperature and pressure relief valve. This valve must
also comply with The Standard for Relief Valves and
Automatic Shutoff Devices for Hot Water Supply Systems.
AINSI Z21.22 (in the U.S. only). A temperature relief valve
is not required but if one is used, do not install the valve
with the probe directly in the flow of water. This may cause
unwarranted discharge of the valve.
LEGEND
HR
HEATING RETURN
Ø
3/4
"
HF
HEATING SUPPLY
Ø
3/4
"
G
GAS
Ø 1/2"
RCR
REMOTE D.H.W. CYLINDER RETURN
Ø 3/4"
RCF
REMOTE D.H.W. CYLINDER FLOW
Ø 3/4"
CWI
COLD WATER INLET
Ø 1/2"
SC
CONDENSATE DRAIN
Ø 0.98 in
0.7
9
1.8
4.3
4.1
RCF
RCR
1.9
5.8
3.2
1.2
HR
G
HF
4
CWI
Fig. 1
RCF
RCR
HR
CWI
HF
Fig. 2
Содержание PCC 34-H
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Страница 9: ...GENERALInformation 6 ING ...
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Страница 32: ...INSTALLATION INSTRUCTIONS 29 Venting Pictures Illustrations ...
Страница 33: ...INSTALLATION INSTRUCTIONS 30 Included With Each Combination Boiler Is A PAHVK Horizontal Kit ...
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Страница 67: ...INSTALLATION INSTRUCTIONS 64 INDIRECT FIRED WATER HEATER 6 9 D H W sensor connection ...
Страница 71: ...68 6 13 Cycle Sequence of Operations ...
Страница 72: ...69 Pensotti LLC 34 Coffin Ave Brewer ME 04412 P 207 942 3636 F 207 942 3737 www pensottiboiler com ...