Spirax Sarco SpiraHeat, Installation And Maintenance Instructions Manual

Page: 8 / 20

IM-P661-02-US TES Issue 2 8
3.1 Steam and condensate connections
It is important that the steam supply (and compressed air if pneumatic actuation is selected) to
the Spirax SpiraHeat
TM
unit is supplied as dry and as clean as possible, in accordance with good
steam engineering practice.
It should also be ensured that all connecting pipework is stress free and adequately supported.
The steam supply should always be maintained at the specified design pressure and temperature for
the unit. The Spirax SpiraHeat
TM
must not operate above the maximum steam pressure and temperature
indicated on the name-plate attached to the plate heat exchanger.
The installation of an appropriately sized safety valve, to protect any lower pressured equipment on
either the hot or cold side of the plate heat exchanger, is strongly recommended.
Spirax Sarco supplies a range of traps, strainers, separators, safety valves and pressure reducing
equipment.
3.2 Air supply
If a pneumatic control system is installed, connect a compressed air supply 20 to 85 psi g (1.4 to 6.0 bar g)
to the pressure regulator mounted on the control valve.
3.3 Electrical supply
All electrical wiring and connections should be carried out in accordance with National Regulations.
A means to isolate and lock the incoming power supply should be fitted adjacent to the unit.
Mains supply is directly connected to the primary side of the incoming control panel isolator and main
ground terminal as shown in Figure 4.
3. Installation
Fig. 4
Phase connection Neutral connection Ground connection
Q1
16A
PE
3L2 5L2 1L2
4T2 6T3 2T1