6
Installation and Servicing
SECTION 1 - GENERAL
Table 1 - General Data
*Required for maximum flow rate. HIU operates down to 2 l/min DHW delivery
** In areas of low water pressure the Flow Regulator can be removed
Models
Indirect
Direct
POD
i305
POD
i405
POD
i505
POD
i605
POD
i705
POD
D30
POD
D40
POD
D50
POD
D60
Inlet Connection
Domestic Hot
Water
22mm copper
Outlet Connection
Domestic Hot
Water
22mm copper
Flow Connection
Central Heating
22mm copper
Return Connection
Central Heating
22mm copper
Flow Connection
Primary
22mm copper
Return Connection
Primary
22mm copper
Pressure Relief Valve Safety Outlet
Central Heating
15mm copper
Maximum Working Pressure (Sealed
System) Central Heating CH
bar (PSI) (kPa)
2.5 (36.3)
6.0 (87.0) (600)
Minimum Operational Central Heating
Pressure (pressure switch activation off)
bar (PSI) (kPa)
0.5 (7.25)
N/A
Maximum Operational Central Heating
Temperature (dependant on primary
supply)
°C
80°C @ 85°C Primary
Maximum Domestic Hot Water Inlet
Pressure (DHW)
bar (PSI) (kPa)
10 (145) (1000)
Minimum Domestic Hot Water Inlet
Pressure*
bar
(lPSI)
(kPa)
0.8
(11.6)
(80)
1.3
(18.9)
(130)
0.8
(11.6)
(80)
1.3
(18.9)**
(130)**
Minimum DHW Inlet Pressure to operate
at 0.6 bar system pressure
bar (PSI) (kPa)
0.5 bar (7.25) (50)
Maximum Operational DHW
Temperature (dependant on primary
supply)
°C
65°C @ 70°C to 85°C Primary
Maximum Primary Supply Pressure
bar (PSI) (kPa)
16 (232) (1600)
6.0 (87.0) (600)
Maximum Primary Supply Temperature
°C
85°C
Minimum Operational Primary
Differential Pressure*
bar (PSI) (kPa)
0.50 (7.25) (50)
Maximum Operational Primary
Differential Pressure*
bar (PSI) (kPa)
6.0 (87) (600)
Maximum Central Heating (Differential)
bar (PSI) (kPa)
N/A
6.0 (87) (600)
Minimum Central Heating (Differential)
bar (PSI) (kPa)
N/A
0.5 (7.3) (50)
Expansion Vessel Volume
Litres
8
N/A
Expansion Vessel Pre-Charge Pressure
Bar
0.75
N/A
Electrical Supply
230 V ~ 50 Hz
Power Consumption
W
94
101
114
94
101
114
Fuse Rating
All models: External : 3A, Internal : T4A HRC L250 V
Water Content Domestic Hot Water
litre
(gal)
0.710
(0.16)
0.79
(0.17)
0.94
(0.21)
1.01
(0.22)
1.2
(0.32)
0.710
(0.16)
0.79
(0.17)
0.94
(0.21)
1.01
(0.22)
Water Content Primary
litre
(gal)
1.07
(0.24)
1.21
(0.27)
1.29
(0.28)
1.47
0.32)
1.73
(0.46)
1.07
(0.24)
1.21
(0.27)
1.29
(0.28)
1.47
(0.32)
Water Content Central Heating
litre
(gal)
1.01
(0.22)
N/A
Packaged Weight
kg
32.1
32.5
32.9
33.4
33.7
26.0
26.4
26.8
27.3
Maximum Installation Weight
kg
29.0
29.4
29.8
30.3
30.6
22.9
23.3
23.7
24.2
HIU Casing Size Height (including first
fix)
mm
735
HIU Casing Size Width
mm
475
HIU Casing Size Depth
mm
330
