Installation manual

18 ©ESP Ltd. Sept 2008
4 . Installation
1. Decide upon the right route to be taken to move the unit;
2. Try to move the unit in its original case;
3. Be sure to have the unit and electrics fitted by qualified tradesmen.
4. Ensure that no building materials or debris are allowed to enter the air ducts
at the top of the unit or any extension thereof. NOTE: Ducting must be 6
inches in size.
Check for obvious signs of damage to the cylinder and controls before under-
taking commissioning work.
Ensure that the Drain Cock at the base of the appliance is closed before
commencing.
1) Open all outlet taps;
2) Turn on mains water supply and allow the unit to fill;
3) Ensure that the hot water system is flushed in accordance with BS 6700;
4) Close taps in turn after having purged the system of air;
5) Check for leaks around the controls and immersion heaters and again
after the unit has heated up;
6) Check that no water is passing to waste through the relief valves;
7) Ensure that the line strainer (situated in the pressure reducing valve) is
clear of installation debris and clean if necessary;
8) Test the operation of the temperature & pressure relief and expansion
valves by lifting/turning the manually operated test lever/cap and
observing that water flows through freely and safely to waste;
9) Turn on electricity (and check for any wiring errors);
10) Check that the discharge pipe is plumbed to Local Regulations so that it
falls continuously and that no taps, valves or other shut off devices are
installed in the pipe;
11) Check that all thermostats are set appropriately;
12) Fill the indirect/solar (primary) circuit (if used). Allow unit to heat up
and check operation of indirect thermostat on motorised valve(s);
13) Check the temperature of the hot water at the nearest outlet and record
in any Log Book provided with the unit (if any);
14) Demonstrate operation to end user, including operation of temperature &
pressure relief valve and what to do if it operates
Hot water air source heat pump
5. Commissioning
Hot water air source heat pump
SOME NOTES ON DUCTING
Air ducts to and from the heat pump should be in 6 inch (preferably rigid) pipe.
The outlets should be fitted with a suitable “flap” or “guard” device to prevent
rain, debris, animals and plants entering the ducts.
When servicing the unit, ducting should be checked to make sure that it is
clear and obstruction removed.
Installation points