21
ATI SP 80, 120, 220, 300, 400 – INSTALLATION INSTRUCTIONS
Sept - 01
1 x 25 Litre vessel mounting bracket.
1 x ¾" BSP Aluminium braid reinforced hose for
connection between expansion vessel and check valve
core assembly.
1 x 22mm x 1" BSP Tundish - Straight.
1 x 1" Temperature & Pressure Relief Valve (Fitted
when ordered with unit.) setting 7 bar 95°C.
Unvented Pack D
suitable for ATI 300 & 400
consisting of :-
1 x 1" BSP Union pressure reducing valve (pre-set 3.5
bar) with integral coaxial strainer.
1 x 1" BSP Check valve core assembly with integral
balanced cold water take off connection (blanked),
expansion vessel connection (blanked) and expansion
valve connection.
1 x ¾" Expansion valve - setting 6 bar.
1 x 40 Litre expansion vessel, complete with integral
foot supports for vertical floor mounting - pre-charged
3.5 bar. (Maximum system capacity 500 litre including
water heater.)
1 x 1" Temperature & Pressure Relief Valve (Fitted
when ordered with unit.) setting 7 bar 95°C.
NOTE
:-
Larger expansion vessel are available for
systems with capacities greater than the ones
provided.
2.6 G A S C O N N E C T I O N S A N D
REGULATIONS
Connect the gas supply line including an isolating
valve and union joint for maintenance purposes. The
manual isolating valve should be in an easily
accessible position. Check that the gas line is sound
and
ensure that it has been installed in accordance with
current regulations relating to gas installations (see ref.
at point 2.1).
NOTE :
for systems operating with LPG gas it is
essential to fit a “first stage” pressure reducer in the
vicinity of the cylinder in order to reduce pressure to
1.5 bar.
GAS PRESSURE
The appliances are calibrated at works for the gas
which they are intended.
(gas type and pressure indicated on the data label)
2.5b UNVENTED HOT WATER SYSTEMS
Where the units are to be installed using a Unvented
system kit for mains water connection, the position of
the controls in the following diagram must be adhered
to.
The following Unvented kits are available at extra cost.
Unvented Pack A/22
suitable for ATI 80 & 120
consisting of :-
1 x 22mm Pressure reducing valve (pre-set 3.5 bar)
with integral coaxial strainer and balanced cold water
take off connection (blanked).
1 x 22mm Expansion / check valve combination
assembly with integral expansion vessel connection
(blanked) setting 6 bar.
1 x 12 Litre expansion vessel - pre-charge 3.5 bar.
(Maximum system capacity 150 litre including water
heater.)
1 x 12/18 Litre vessel mounting bracket.
1 x ¾" BSP Aluminium braid reinforced hose for
connection between expansion vessel and expansion /
check valve.
1 x 22mm x 1” BSP Tundish - Straight.
1 x ½" Temperature & Pressure Relief Valve (Fitted
when ordered with unit) setting 7 bar 95°C.
Unvented Pack C
suitable for ATI 220 consisting of :-
1 x 1" BSP Union pressure reducing valve (pre-set 3.5
bar) with integral coaxial strainer.
1 x 1" BSP Check valve core assembly with integral
balanced cold water take off connection (blanked),
expansion vessel connection (blanked) and expansion
valve connection.
1 x ¾" Expansion valve - setting 6 bar.
1 x 25 Litre expansion vessel - pre-charged 3.5 bar.
(Maximum system capacity 315 litre including water
heater.)
MODEL :
80
120
220
300
400
GAS CONNECTION
3/8"
3/8"
1/2"
1/2"
1/2"
