k
f
k
te
i
t
i
r
treS6Y9N
t
System Drains at
All Low Points
15mm By-pass
if required
SYSTEM DETAILS
The appliance is suitable for use with open vent fully
pumped systems, sealed systems and where
additional control protection is required.
•
The following conditions should be observed on all
systems:
()The static head must not exceed 30 m
(100ft) of water.
•The boiler must not be used with a
direct cylinder.
0The boiler is fitted with a pump
overrun thermostat and where the
system design does not result in a
permanent open circuit between boiler
flow and return, a 15mm by-pass loop,
fitted with a lockshield valve, must be
incorporated to maintain a minimum
flow rate through the boiler of
7
1/min
(1.54 gal/min).
•
Drain cocks should be fitted to all
system low points.
Ptp,
cteta
"Y
Pumped SI-
OPosition isolating valves as close to circulating pump
as possible.
S
System additives - where used, corrosion inhibitors
and flushing agents/descalers should be suitable for
all system metals. They should be acceptable to major
users i.e. British Gas and Water Council approved. Non
acidity or alkalinity is desirable.
The sizes of flow and return pipes from the boiler
should be determined by normal methods, according
to the requirements of the system.
It Is recommended that the system is designed for an
11°C (20°F) drop in temperature across the system.
22mm Open Vent
15mm
Cold
Feed
Air Vent
-gt
Radiator
Circuit
0 All gas and water pipes and electrical wiring
must be installed in a way which would not restrict
the servicing of the boiler.
Indirect
Cylinder
To Next Page
Loading...
Need help?
General
