Raypak 992C Installation & Operating Instructions Manual page 30

VERSA
MASTER
Fig. 35: FT_BUS Wire Connection
Fig. 34: Hi Delta Cascade System Wiring
Cascade System Pump and
Sensor Wiring
1. On the boiler designated as the Master, connect
2. Connect the boiler pump enable wires to the termi-
3. Connect the system supply sensor to terminals 6
4. Connect the Outdoor sensor (if used) to terminals
30
the system pump enable wiring to the terminal
block at the rear of the unit. The connections are
dry contacts rated for pilot duty only (5A maxi-
mum).
nal block at the rear of their unit. The connections
are dry contacts rated for pilot duty only (5A maxi-
mum).
and 7 on the field wiring strip located on the Master
PIM (See Fig. 33).
8 and 9 on the field wiring strip located on the
Master boiler (See Fig. 33).