Heat transfer solutions Heat exchangers
6
Spirax EasiHeat TM HTG nomenclature
Building heating unit
EHHSC = Spirax EasiHeat™ HTG steam side control
EHHSC
1 = DN20 (¾") 2 = DN25 (1") 3 = DN32 (1¼") 4 = DN40 (1½") 5 = DN50 (2") 6 = DN65 (2½") L = Low noise trim
Control valve size
2
Compulsory selection
Control valve trim Pressure vessel code
L P
P = PED
EL3 = Electric spring return EL4 = Electric super capacitor PN = Pneumatic
Actuation
EL4
ST = Steam trap
Condensate removal
PT = Pump trap PTHC = Pump trap high capacity HL = Integrated high limit IHL = Independent high limit
ST
High limit
HL
B = Battery back-p C = Super capacitor
High limit actuation (EL4 only)
C
V1 = Ball valve V2 = BSA V3 = DBB3 G1 = EPDMP
Isolation
V2
Mechanical options
6.2 17
G2 = Heatseal G3 = WRAS FKMFF (UK only) G4 = WRAS EPDMFF (UK only)
Gasket material
G1
W = Wheels
Extras
W
S = EN 12828 safety option
T2 = SIMS technology touch screen
Control panel
T2
P2 = Process controller
Energy monitoring
E = With energy monitoring R1 = Level 1 – SMS and E-mail R2 = Level 2 – Full web access R3 = Level 3 – SMS + Remote
E
Panel options
Remote access
R2
10.2.16
C1 = Modbus RTU C2 = BACnet MS/TP C3 = Modbus TCP/IP
Communications
C2
C4 = DeviceNet C5 = CANopen C6 = BACnet IP C7 = Profibus
Spirax EasiHeat TM HTG nomenclature example: EHHSC 2 L P EL4 ST - HL C V2
G1
W -
T2
E R2
C2
TI-P481-11 CTLS Issue 3
Page 5 of 6
Spirax EasiHeat TM HTG (Steam Side Control) EN Heating System Compact Heat Transfer Solution
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