Honeywell SV2 Series User Manual page 171

Option 2
Alternately, a transformer may be used. The transformer must be a double- or reinforced-isolated separation transformer, so
that a short between the primary and secondary is excluded. EN298:2012 Annex E requires the use of either an EN61558-
2-6 or EN61558-2-16 approved transformer, however, the actual meaningful requirement is the isolation strength of the
transformer and not the fact that the secondary is an accessible voltage.
• Use a 240/240VAC transformer
• ILKIN is only energized if both relays are ON
• Transformer may also be used to convert 240/120/24VAC as desired. Match to appropriate SV2 Series valve model
(24/120/240VAC).
NOTE: EN61558-2-6 specifically requires that the "secondary does not exceed 50 VAC or 120 V ripple-free VDC", whereas
EN61558-2-16 does NOT have such a requirement. In this case, ONLY the reinforced isolation is relevant.
GROUND
N
INTERNAL
L1 ELECTRONICS
V1
N
Fig. 153: European Burner Control with BASIC or STANDARD Electronics, No External VPS.
SV2 Series Safety Shut-off Valves
V2F, V2V
SV2 SERIES VALVE
1
POC
VPS
ILKIN
ILKOUT
MV1
MV2
V2
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
171
Burner Control
L1
L2
K002