21
10.3
POOL HEATING
The Mini Copper-Fin is also suitable for directly heating pool water without a secondary heat exchanger. The
design of the interconnecting pipework must incorporate a bypass to ensure that the return water temperature
does not remain below 50°C for long periods of time. This bypass arrangement is also needed for low system
temperature circuits. Contact Lochinvar Limited for further information
10.4
FLOW SWITCH
The Lochinvar Mini Copper-Fin range of equipment is based on a low water content copper heat exchanger. In
order to ensure a long life expectancy it is important that the burner does not fire if the main circulating pump fails.
This is more important in the water heater specification due to the fact that in hard water areas if the heater fires
up without adequate water flow, then lime scale will be deposited in a very short space of time and will cause non-
warrantable failure. In both boilers and water heaters it is detrimental to the heater to be fired without adequate
water flow, as localised over-heating will occur.
In order to overcome this problem the units are supplied complete with a flow switch to ensure that the heater will
not fire unless the pump is operational. It should be noted that the flow switch is not an accurate flow-measuring
device and only proves that the pump is operational.
11.0
ELECTRICAL SUPPLY
Wiring external to the equipment must be installed in accordance with the I.E.E. Regulations and any local
regulations that apply.
Model
Normal Supply
Voltage
External Fuse
Rating
Power Consumption
MC91CE
230V AC
50 Hz
1 PH
6.0 A
19 W
MC136CE
19 W
MC181CE
19 W
MC226CE
19 W
MC271CE
19 W
MC316CE
19 W
MC361CE
19 W
MC401CE
19 W
MC501CE
38 W
TABLE 11.1
ELECTRICAL SUPPLY REQUIREMENTS
WARNING: THIS APPLIANCE MUST BE EARTHED
A suitably competent person MUST check wiring. Normal supply required is 230 volts AC, single phase,
50 Hz. An isolator with a contact separation of at least 3mm in all poles should be sited close to the
equipment and must only serve that equipment. The double pole switch must be readily accessible under
all conditions.
