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INSTALLATION
Appliance Commissioning
The built in controls should ensure compatibility if the heat pump and the BoilerMate
A-Class HP-DEM appliance. They will automatically control the two appliances once
both appliances are energised.
Turn on the BoilerMate A-Class HP-DEM and check that the sensors and all controls operate
correctly as well as any motorised valves. Check that no water discharges from either the
expansion valve or temperature and pressure-relief valve during the heating cycle.
Do not switch on MCB1 and MCB2 to activate the CH and DHWS electric boost
systems until the primary systems have been commissioned.
Check the appliance, the heating system and hot water system for leaks when hot.
System Commissioning
Check that the correct outlet pressure is being maintained on the domestic water
systems by the pressure reducing valve by checking the pressure at a hot tap or in
the tapping provided on the combination inlet valve.
Check the correct flow is being achieved at each tap and the implications of opening
more than one tap at the same time. If necessary fit flow regulators to each tap if these
have not already been provided.
The heating systems and pumps should be set and balanced in the normal way to provide
the temperature differential in line with the system design parameters chosen.
The primary system and pump to the heat pump should normally be set to speed 3.
If an automatic bypass valve is provided on the primary/heating circuit, check/adjust
this as necessary to suit the particular installation requirements.
The room thermostat/clock or programmable room thermostat controls the heating
and hot water systems and should be set to suit the householders requirements using
the instructions provided with the controls.
This product is covered by the 'Benchmark' scheme and a separate
commissioning/service log book is included with this product. This must be
completed during commissioning and left with the product to meet the Warranty
conditions offered by Gledhill.
On completion:-
1. Do ensure that the electrical connections (e.g. mains supply, room thermostat)
to the unit are correct and tight.
2. Do ensure that all the pipework connections in the appliance are tight and not
leaking.
3. Do ensure that any pipework particularly plastic adjacent to the appliance is
adequately supported and anchored.
4. Do ensure that the functioning and control of the system is explained to the
occupant and explain the need and importance of periodic servicing.
These Instructions should be replaced along with the component manufacturers
instructions in the pocket provided on the appliance and the front panel refitted.
NOTE:- With sealed heating systems air is released from the water during the first few
weeks of operation. This must be vented and the system repressurised.
If the system is not likely to be used continuously after testing/commissioning it
should be isolated from the water and electricity supply and either drained down or
have the pressure removed from both the heating and water systems.
Important Do's and Don'ts
DO check the incoming mains water pressure
and flow rate are adequate. (The preferred
range of mains pressure is 2.5-3.5 bar).
DO check and ensure that the air pressure side
of the hot water expansion vessel(s) is set at
1.5 bar.
DO check that all plumbing and electrical
connections are in accordance with the
labelling on the unvented storage appliance.
DO insulate any exposed pipework in the
BoilerMate A-Class HP-DEM cupboard and
insulate/waterproof the external pipework to
the heat pump.
DO check the pump settings give the correct
temperature difference across the flow and
return in the primary/heating circuits.
DO ensure that the bypass valve is set
correctly.
DON'T operate any immersion heaters until
the appliance/systems are fully filled, vented
and commissioned.
DON'T place any clothing or other combustible
materials against or on top of this appliance.
DO ensure that the discharge pipework from
the relief valves is/are installed to a fall and
are of the correct size so that water does not
overflow when a relief valve operates.
DO ensure the discharge point is safe and in
accordance with the G3 Building Regulations.
DO check and ensure the air pressure side of
the heating expansion vessel is set at 1.0 bar
(or as specified).
DO check that the primary system pressure
does not exceed 2 bar when the whole
of the primary/heating system are up to
temperature.
DO ensure that all systems are thoroughly
flushed and cleaned and that a Fernox Boiler
Buddy is fitted internally on the return as near
as possible to the heat pump.
DO ensure that the inhibitor used is a combined
product incorporating antifreeze and that
sufficient has been added to provide at least the
minimum concentration level recommended by
the manufacturer.
Page 32
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