Raypak 240692 manual Field Wiring, Single-StageOn/Off Boilers, Multiple-StageBoilers

FIELD WIRING

Single-Stage (On/Off) Boilers

-All stage connections on the control board are connected at the {TH} (Thermostat) location on the boiler wiring diagram.

Multiple-Stage Boilers

-First stage connections on the control board are connected at the {TH} (Thermostat) location on the boiler wiring diagram.

-Second (or third, etc.) stage connections on the control board are connected at the locations shown on the boiler wiring diagram.

Utilize Shielded Cable

Outdoor Air Temperature

Sensor (see NOTE 4)

Water Temperature

Sensor

P5

Stage 1

Stage 2

Stage 3

Stage 4

Stage 5
Stage 6
Stage 7
Stage 8
	P6
Pump Relay
Pilot Duty Only
2.5 Amp Max	P4
250V Max
Thermostat
(Jumpered) or
Building Management System	P1
Outdoor Temp
Water Temp
	P2

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

1

2

1

2

3

1

2

3

4

Notes:

1.Tighten terminal strip clamping screws to 4 in-lbs. Breakage from over torquing is not covered under warranty.

2.Use copper conductors only.

3.For supply connections, use wires sized on the basis of 60°C (140°F) ampacity and rated a min. 90°C (194°F).

4.The outdoor sensor must be connected, otherwise a sensor error will be displayed.

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