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3 BEFORE FITTING A COMBINATION BOILER THE INSTALLER
MUST CHECK:
1. That a risk assessment has been completed to determine the most appropriate anti-scald
device to be used for the various applications, to limit the temperature of hot water outlets
including bidets, taps and showers. DHW setpoint 9 has a nominal flow temperature of 70°C at
the boiler.
Consult local building control regulations which apply to the installation for further reference.
2. What the maximum hot water demand placed on the boiler is likely to be. Not every
installation is suitable for a Combination boiler. Systems requiring very high hot water flow rates
may be better suited with a Warmflow unvented cylinder.
3. That the mains are capable of supplying up to 24 litre/min with a minimum dynamic pressure
of 1.8 bar at the boiler. This is to ensure that the boiler can achieve its maximum output. To
protect the appliance and to prevent excessive flow rates, the appliance is equipped with a 3-
bar pressure reducing valve to limit the maximum water supply pressure to 3 bar. A 0.16 litre
expansion vessel is also fitted to the domestic circuit to accommodate DHW expansion when
outlets are closed. It may be necessary to supplement this expansion vessel in larger DHW
systems.
4. The hardness of the mains water supply. Systems with hard water must be fitted with a
suitable chemical scale preventer (e.g. Fernox Quantomat or Combimate).
5. That the flow from any one hot water outlet does not exceed the maximum recommended.
This applies particularly to baths which are usually fitted with larger taps and larger bore supply
pipes. It may be necessary to restrict the flow to these taps by reducing the bore of the supply
pipework (e.g. 15mm) or by fitting a restrictor into the pipework.
6. That any outlet, when opened, does not starve all the other outlets of hot water. If more than
one outlet is open at the same time then the total flow from all the outlets should not exceed the
maximum flow rate of the boiler.
7. That any showers being supplied with hot water by the boiler are compatible with this type of
appliance.
It should be noted that the boiler has been factory fitted with an 18 litre/min flow restrictor.
The manufacturer’s guarantees are void if the appliance is not installed and commissioned in
accordance with the recommendations made herein.
Summary of Contents for Agentis Series
Page 2: ......
Page 30: ...Page 29 4 5 Components 4 5 1 B Series Boilerhouse Casing Key Components...
Page 31: ...Page 30 4 5 2 I Series Internal Casing 21 26 33 Models 44 Models...
Page 32: ...Page 31 4 5 3 I Series Internal Key Components 21 26 33 Models 44 Models...
Page 33: ...Page 32 4 5 4 I Series Internal Pump Group 21 26 33 Models 44 Models...
Page 35: ...Page 34 4 5 7 E Series External Casing 21 26 33 Models 44 Models...
Page 36: ...Page 35 4 5 8 E Series External Key Components 21 26 33 Models 44 Models...
Page 37: ...Page 36 4 5 9 E Series External Pump Group 21 26 33 Models 44 Models...
Page 39: ...Page 38 4 5 12 Combination Boiler Pipe Layout...
Page 41: ...Page 40 5 1 2 I Series Internal I21 I26 I33 5 1 3 I Series Internal I44...
Page 43: ...Page 42 5 1 6 E Series External Base Tray E21 E26 E33 5 1 7 E Series External E44...
Page 45: ...Page 44 5 1 10 E Series External Combination Boiler Base Tray E21C E26C E33C...
Page 61: ...Page 60 6 3 3 External 230V Two Channel Programmer Room Thermostat Optional Outdoor sensor...
Page 62: ...Page 61 6 3 4 Internal Two Channel Programmer and Room Thermostat Optional Outdoor Sensor...
Page 73: ...Page 72 6 6 9 Honeywell Y Plan Independent CH DHW Fully Pumped Only 2 CHANNEL TIMECLOCK...
Page 74: ...Page 73 6 6 10 Honeywell S Plan Independent CH DHW Fully Pumped Only 2 CHANNEL TIMECLOCK...
Page 93: ...Page 92 Kabin Pak External Plume Management Kit KPMK The kit comprises...
Page 107: ...Page 106 11 4 Burner Start Up Cycle Lock out is indicated by a lamp on the control box...
Page 122: ...Page 121 14 SPARES 14 1 RDB 2 2 BX Spares...
Page 124: ...Page 123 14 2 RDB 3 2 BX Spares...
Page 134: ...Page 133 Intentionally left blank...
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