Service Relay - Pentair TRACETEK TTDM-128 Installation Instructions Manual

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Connect the alarm relays.
The TTDM-128 has three relays, for service
Form-C relay contacts, and normally open and normally closed contacts are both provided. The
relays are de-energized to indicate an alarm condition. The illustration shows the relay status in
the alarm (de-energized) state.
The illustrations that follow show how relays can be jumpered together to allow remote
monitoring of the TTDM-128 status with only a single pair of wires. The TTDM-128 de-energizes
its relays to signal an alarm condition. Therefore, loss of power, as well as any other type of alarm,
would signal the remote alarm.
IMpORTANT: The relay plugs can accept wires 10 AWG (4.7 sq. mm) or smaller. We recommend 18
AWG (1.0 sq. mm) wires. Cable should have a t emperature rating of 65°C.
IMpORTANT: Maximum load for relays is 5 A.


SERVICE RELAY

LEAK RELAY
Alarm on open circuit
 
Alarm on closed circuit
 
EN-TraceTekTTDM128-IM-H57341 04/16
, leak , and fault
ck bt
 FAULT RELAY 

Relays wired
in series
Monitoring circuit
(alarm on open circuit)

Relays wired
in parallel
Monitoring circuit
(alarm on closed circuit)
. Each relay provides two
bs
THERMAL BUILDING SOLUTIONS