Control Sequence Logic - IDEAL SUPER PLUS 200/S Installation And Servicing

INDIVIDUAL MODULE
P.T.P.1
Module gas
service cock
Main inlet gas cock
All modules on prepurge
if starting from cold.
(i.e. all modules have
been off, giving boiler five
-volume air change)
approx. 70s
(all fans running)
Super Plus -
Installation and Servicing
SERVICING
Shows all controls and positions of pressure test points
Main gas
Main gas valves
governor
P.T.P.2
Fig.19 Diagram of Gas Supply Manifold
Pilot burner
ignition can occur
at any time during
4s spark ignition
Up to 35s Purge period
approx. 35s
Fans start in sequence with
delays as follows:
Module 1 - 0s
Module 2 - 7s approx.
Module 3 - 14s approx.
Module 4 - 21s approx.
Module 5 - 28s approx.
Module 6 - 35s approx.
Fig.20 Control Sequence Logic
P.P.T.3
Individual module operation
Flame proving
8s
period
4s
Spark ignition period
Main burner
Main burner
Fan
23