IDEAL LOGIC HIU Direct MT, Installation And Servicing, Page: 19 / 32

DIRECT HARDWARE CONTENTS
32 LOGIC HIU DIRECT 50 MT OR LOGIC HIU DIRECT 50 HT
35 DIFFERENTIAL PRESSURE CONTROL (DPC)
(Inc. sealing washer to appliance)
1 x return pressure take off fitting
1 x Flow DCP valve
1 x Pressure feed tube
2 x appliance sealing washers
To be fitted directly on to CH flow & return before and isolation valves
Note Failure to install this device will damage standard domestic
heating control systems TCR (thermostatic radiator valves etc)
36 OPTIONAL FLUSHING BY-PASS
(Inc. Union built in rubber sealing washer)
Check the components in the kit before commencing. It is strongly recommended
the flushing by-pass option kit is fitted as it allows for cleaning of the primary water
system loop whilst the HIU is fitted.
1 ‘H’ pa ttern flushing bypass valve
2 Threaded male union tail piece - 4 off.
Install tails into HIU inlet connections
Fit Flushing by pass
Connect to primary pipe work
Turn screw driver slot horizontal to bypass.
Turn Vertical to connect the HIU to the primary circuit
33 PRIMARY BALL VALVE SET
Flow & Control Valves (with sample points). (Inc. sealing washer to appliance)
CONTENT
Item Qty Component
1 2 16 Bar primary inlet ball valves with integrated pressure sampling points ¾”
BSP Union connection x 1” BSP ball valve with union end and male threaded
connection joint*.
2 2 Rubber washers for union end connection and
2 Fibre washes for ¾” BSP connection face
34 DOMESTIC CONNECTION FLOW & RETURN VALVE KIT
(Inc. sealing washer to appliance)
CONTENT
Item Qty Component CH inlet and outlet connection valves (Inc. sealing washer to appliance)
2 2 22mm x ¾” ball valve with union end and compression joint* - one blue and one red handle.
3 Small component pack consisting of: 2 ¾” seal for union joint
DHW inlet and outlet connection valves (Inc. sealing washer to appliance)
1 2 15mm x ½” ball valve with union end and compression joint*.
2 15mm compression nut
2 15mm olive
* Compression ends complying with BS EN 1254-2 for use with R250 (half hard) copper tube
19 LOGIC HIU -
Installation & Servicing / Users
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