A.O. Smith SGS - 100, Installation & Service Manual

Page: 28 / 110

Installation
28 Instruction manual SGS
3
is
3.7.4 Condensation drainage
1. Fit a sloping wastewater pipe to the siphon (13) for condensation drainage
and connect this to the wastewater discharge in the boiler room.
Caution
All fittings behind the siphon must be condensation-resistant.
3.8 Gas connection
Warning
The installation should be carried out by an authorised installation engineer,
in compliance with general and local regulations (1.3 "Regulations") .
Caution
Make sure that the diameter and length of the gas supply pipe are large
enough to supply sufficient capacity to the appliance.
See (D) in the installation diagram (3.5 "Installation diagram") .
1. Fit a manual gas valve (10) in the gas supply pipe.
2. Blow the gas pipe clean before use.
3. Close the manual gas valve.
4. Fit the gas supply pipe to the gas control.
Warning
After fitting, check for leaks.
3.9 Solar heating system
Note
For the solar heating system connections, refer to the electrical
diagram (17.4 "Electrical diagram, solar heating system") and the
table. ( "Electrical connector block")
1. Connect the supply from the solar collector to the inlet (F) of the heat
exchanger (55).
2. Connect the return pipe to the solar collector to the outlet (G) of the heat
exchanger (55).
3. Connect the lead from the solar heating system controller to sensor S2, see:
- electrical diagram (17.3 "Electrical diagram for the appliance") and
- connections table (3.11.2 "Preparation") .
4. Connect the communication cable between the solar heating system
controller and the appliance, see:
-
electrical diagram (17.4 "Electrical diagram, solar heating system") and
- connections table (3.11.2 "Preparation") .
Warning
The installation diagram shows a non-return valve in the pump station. This
non-return valve may be used solely in closed (pressure) systems. In systems
with a drain-back tank, it is prohibited to fit a non-return valve in the solar
heating system.
3.10 Air supply and flue
3.10.1 Introduction
This section covers the following subjects:
•
Requirements for flue gas discharge materials
• Concentric connections
• Parallel connections