Azbil AUR890 Series - Page 21

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Chapter 2. Installation, Wiring
z External connection terminals of the RA890 replacement base unit (Q890A100)
Q890A100 external-connection terminal Nos.
No. Function
1 AC power supply (L1)
2 AC power supply (L2 (N))
3 Pilot valve output
4 Ignition transformer output
5 Main valve output
6 Line voltage temp. controller
T
Low voltage temp. controller
(Non-voltage contacts)
T
F
Flame detector
G
COM
Alarm outputNO
NC
External connection terminals of Q890A100
Q890A100
When the upper part of the replacement base unit is removed,
the external connection terminals can be viewed.
6
T
T
F
G
COM
NO
NC
5
4
3
1
2