Bosch SSB255 - Venting and Air Piping Systems

SSB 6720818454 (2016/02) US
Installation | 23
LP conversion kit installation (SSB399 - SSB512)
Natural Gas to LP conversion
The heating unit is factory preset for operating with natural gas. This
set-up can be changed using the conversion kits supplied by the
manufacturer.
NOTICE: This change may only be performed by a qualied
installer or service technician, according to the following
procedure.
Switching from NATURAL GAS to LP
► Close the gas cock
► Disconnect the electric power supply from the boiler

WARNING: to avoid electrical shock, it is mandatory to
disconnect the boiler from the power supply using a service
disconnect external switch.
► Remove the front panel
► Unscrew the swivel joint ‘A’ indicated in Fig. 23 to separate the valve
from the connection pipe with the fan
► Separating the two components, you can see the hole where the gas
passes with its gasket
► Place the provided metal orice ‘B’ (Fig. 23) between the two gaskets
► Tighten the swivel joint
► Switch the main power supply to ON
Fig. 23
(*) Balancing tube shown removed for clarity.
Boiler model N° on orice
SSB255 7.0
SSB399 10.5
SSB512 9.5
Tab. 2
F
NOTICE: Make sure there is no demand or call for heat.
► Use the control panel to enter in the parameter list and change the
parameter N° 98 (Gas Type) from “NG” to “LPG”
► Reopen the gas shut-off cock
► Adjust the CO
2
parameter as explained in chapter “5.7 Adjusting
and setting CO2 limits” (see “Tab. 17 Number of turns for gas valve
settings”)
► Afx the gas type label from the gas conversion kit to the appliance
(Fig. 24).
Fig. 24 Afxing the gas type label
4.7 Venting and air piping system

WARNING: Do not connect this gas appliance with any
other appliance unless approved by manufacturer.
Failure to comply with this WARNING could result in the
accumulation of carbon monoxide gas which can cause
severe personal injury or death.

DANGER: The condensate discharge must be lled with
water or combustion gases will enter the room with a risk of
an excessive level of carbon monoxide. For instruction see
par 4.4.6.
NOTICE: DO NOT use PVC for vent piping when using
anti-freeze in the primary circuit of the boiler. Use CPVC, PP
or stainless steel only!.
Make sure that the combustion air is not contaminated by:
• Permanent wave solutions;
• Chlorinated waxes/cleaners;
• Chlorine-based swimming pool chemicals;
• Calcium chloride
• Sodium chloride used for water softening;
• Refrigerant leaks;
• Paint or varnish removers;
• Hydrochloric acid/muriatic acid;
• Cements and glues;
• Antistatic fabric softeners used in clothes dryers;
• Chlorine-type bleaches, detergents, and cleaning solvents found in
household laundry rooms;
• Adhesives used to fasten building products and other similar products.
To prevent contamination do not connect the combustion ait inlet and
exhaust near:
• Dry cleaning/laundry areas and establishments;
• Swimming pools;
• Metal fabrication plants;
• Beauty shops;
• Refrigeration repair shops;
• Photo processing plants;
• Auto body shops;
• Plastic manufacturing plants;
• Furniture renishing areas and establishments;
A
B
(*)
DIRECT VENT BOILER FOR EITHER DIRECT VENT INSTALLATION OR FOR
INSTALLATION USING INDOOR COMBUSTION AIR
CHAUDIÈRE À ÉVENT DIRECT PUT INSTALLATION AVEC ÈVACUATION
DIRECTE OU AVEC AIR COMBURANT
Catégorie
Modèle
Référence
Category
Model
Model no.
IV
SSB-512
7 738 004 896
Converted to LPG (Propane) with conversion kit X XXX XXX XXX
CO
2 (max. rate/ min rate)
Min. inlet gas pressure
Max. inlet gas pressure
Mainfold pressure
Min. input rate
Max. input rate
Output rate
Minimun relief valve capacity
Altitude
10,7/10,3 %
8,0 in.W. C.1,99 kPa
3,23 kPa
30,0 kW
150,0kW
144,0 kW
13,0 in.W. C.
cfactory set - not adjustable
102,360 Btu/hr
511,800 Btu/hr
491,328 Btu/hr
0-2000 ft0-610 m
(Refer to installation instruction for higher altitudes)
This boiler was converted on (day - month - year)
(name and address of organization making this conversion), which accepts
the responsability that this conversion has been properly made.
to gas. By
IV
SSB-512
7 738 004 896
Convertie vers LPG (Propane) a vec le kit de conversion X XXX XXX XXX
CO
2 ( max / min)
Min. pression d’alimentation en gaz
Max. pression d’alimentation en gaz
Pression à la conduite de gaz
Consommation calorifique min.
Consommation calorifique max.
Puissance utile nominal
Capacité minimale de la soupape de sécurité
Altitude
232,1 kg/hr 511,8 lbs/hr
10,7/10,3 %
8,0 in.W. C.
150,0kW
144,0 kW
13,0 in.W. C.
cfactory set - not adjustable
102,360 Btu/hr
511,800 Btu/hr
491,328 Btu/hr
0-2000 ft0-610 m
232,1 kg/hr 511,8 lbs/hr
(Se référ à la notice d’installtion en cas d’altitude plis élevée)
Ce appareil a été converti le (jour- mois- année) en
(nome ed adtrsse de l’organisme effectuant cette conversion), qui accepte la
responsabilité de la bonne execution de cette conversion.
gaz par
X XXX XXX XXX (2015/04)