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1 IMPORTANT FACTS: READ BEFORE COMMENCING PUMP INSTALLATION
A Water storage capacity.
1.11 The Unimat-E & Duomat-E have a usable water volume of approximately 8 litres;
the length of time the unit takes to pressurise a system will be dependent on:-
The pressure differential between the cold fill and set pressures and also the
refill rate of the tank
1.12 Ensure the pumps are primed as described in the priming section before
starting, to avoid causing damage to the pump shaft seal. See Section 6.26
Hydraulic commissioning.
B Water temperature
This unit is designed to pump cold water only which should not exceed the following
values:
1.13 The maximum allowable water temperature is 23
o
C (see Technical Section).
1.14 The minimum allowable water temperature is 4
o
C.
C Pipework - General
1.15 Do not drill holes or put fastenings into the tank body, this will cause leakage.
1.16 Secure pipework: Ensure pipework to and from pump is independently
supported & clipped to prevent forces being transferred to inlet and outlet
branches of the unit. Do not secure pipework to the unit, this will cause damage
and possible leakage.
1.17 Flux: Solder joints must be completed and flux residues removed prior to the
units installation (flux damage will void any warranty).
1.18 Pipework design: Care should be taken in the design of pipework runs to
minimize the risk of air locks e.g. use drawn bends rather than 90
o
bends.
1.19 DO NOT introduce solder flux to flexible hose, tank, pump or any
parts manufactured from plastic.
1.20 DO NOT allow contact with oil or cellulose based paints, paint
thinners or strippers, acid based descalents or aggressive cleaning
agents.
1.21 DO NOT bend the flexible hose beyond 90
o
. It must be installed as
detailed, DO NOT kink. See Installation Section 4.15.
D Plumbing installation regulations
1.22 The plumbing installation must comply with the current water and building
regulations.
1.23 The plumbing installation must be installed by a qualified person.
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