INSTALLATION INSTRUCTIONS
HCV & HCVR Evaporative Cooling & Gas Heating
Page 12 of 26
Water Supply
It is essential that an adequate supply of water is available to the unit during the summer when water
consumption will be at a maximum. In area where water is not reticulated, it will be necessary to
install a holding tank above the unit or alternatively to pump water to the unit. A stopcock should be
fitted in the water supply adjacent to the unit for shutting off water supply during service to unit
cooling section.
Water Setup
Water Supply
Ensure that available water supply pressure is not less than 220 kPa (30psi)
The supply pipe should be 12mm copper pipe or similar approved. A ¼ turn ball isolating valve must be
installed on the supply pipe near the unit for ease of maintenance. Do not use duo or non-return valves of
any kind including stop taps with jumper washer.
NOTE: Non return type valves can have an effect on the operation of the water solenoid valves.
Lock up and damage can be caused.
Fit water supply tap close to the unit to assist in routine servicing.
Before connecting the supply pipe flush it of any swarf or debris that may cause the float valve to
leak.
NOTE: In areas where water pipes freeze, provisions will be needed to drain the water piping to
prevent damage
External water
connection
1/2”
