State Water Heaters SCE 65-400, Installation, User And Service Manual

Page: 28 / 72

Installation
28 Instruction Manual SCE
3
is
3.7.4 Circulation pipe
See
c
in Figure 3.2 .
If you wish to have hot water at hot water draw-off points immediately, a
circulation pump can be installed. This increases ease of use and prevents
water spillage.
1. Fit a circulation pump
f
of a capacity corresponding with the size and
resistance of the circulation system.
2. Fit a non-return valve
e
after the circulation pump to guarantee the direction
of circulation.
3. Fit two stop valve s for servicing
d
.
4. Connect the circulation pipe to the cold water supply pipe.
3.8 Gas connection
Warning
Gas installation may only be carried out by an approved installer and in
accordance with the general regulations of gas companies that are in force.
See also paragraph
’1.3 Regulations’ .
c Note
Make sure that the diameter and length of the gas supply pipe is
dimensioned so that sufficient capacity can be supplied for the appliance.
See
d
in Figure 3.2 .
1. Fit a gas valve
h
in the gas supply pipe.
2. Syringe the gas pipe with air before using, to avoid contamination.
3. Shut off the gas valve.
4. Fit the gas supply pipe to the gas control.
Warning
Check for leaks after fitting.
3.9 Flue gas outlet
Warning
The installation should be carried out by an approved installer, in
accordance with the general and local regulations in force of gas, water
supply and power supply companies and the fire brigade.
See also paragraph
’1.3 Regulations’ .