Raypak 850, 300 operating instructions Cascade Master Pump and Sensor Wiring

Models: 300 850

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Cascade Master Pump and Sensor Wiring

*

* - May be configured as DHW SENSOR for single boiler Cascade with Indirect

Fig. 18: XFyre Cascade Master

Cascade Master Pump and Sensor Wiring

5.Connect the boiler pump to the terminals marked

BOILER PUMP NEUT (#6), BOILER PUMP HOT (#5), and GROUND (#4).

6.Connect the system pipe sensor to the terminals marked SYS SENSOR, as shown in Fig. 18.

7.Connect the outdoor sensor (if used) to the termi- nals marked OUTDOOR SEN.

8.Connect the signal to start the system to the termi- nals marked THERMOSTAT.

NOTE: This signal can come from a room thermostat or a dry contact closure. No power of any voltage should be fed into either of these terminals.

1.

On the boiler designated as the Cascade Master,

 

 

apply the System Sensor and DHW Sensor decals

 

 

(included) to the field wiring board as shown in Fig.

 

 

18. Apply the SYSTEM PUMP and EXT HEATER

 

 

labels to the wiring electrical connections terminal

 

 

strip as shown in Fig. 11b on page 17.

 

2.

Connect the system pump hot wire to terminal #11,

 

 

marked SYSTEM PUMP (see Fig 11b).

 

3.

Connect the system pump neutral to terminal #6,

 

 

marked BOILER PUMP NEUT, and the pump

 

 

ground wire to terminal #3, marked GROUND, at

Fig. 19: XFyre Cascade Follower

4.

the rear terminal strip.

Connect a jumper wire from terminal #1, marked

 

 

120 V BLACK (HOT), terminal #11, marked SYS-

 

 

TEM PUMP POWER, at the rear terminal strip.

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Raypak 850, 300 operating instructions Cascade Master Pump and Sensor Wiring