Orion-system Water Source Heat Pump Module Manual de usuario descargar pdf (Pagina 11)

Technical Guide

Water Source Heat Pump Module

Sequence of Operation

Table 2: Water Source Heat Pump Module Inputs &

Outputs

General

The following inputs and outputs are available on the Water Source Heat

Pump Module. See Table 2 below to reference the Input/Output Map.

Binary Inputs

1 Circuit A, 1

Compressor Enable (BIN 1)

2 Circuit A, 2

Compressor Enable (BIN 2)

3 Circuit B, 1

Compressor Enable (BIN 3)

4 Circuit B, 2

Compressor Enable (BIN 4)

5 Cool Enable (BIN 5)

6 Water Proof of Flow (BIN 6)

Analog Inputs

1 Suction Pressure Circuit A (Pres 1)

2 Not Used

3 Suction Pressure Circuit B (Pres 3)

4 Not Used

5 Leaving Water Temperature (T1)

Analog Outputs (1-5 VDC)

1 Circuit A - Digital Compressor A1 (AOUT1)

2 Circuit B - Digital Compressor B1 (AOUT2)

NOTE: Analog Outputs are not used on Stand Alone

Application

Relay Outputs (24 VAC)

1 Circuit A, 1

Compressor Enable Output (RLY1)

2 Circuit A, 2

Compressor Enable Output (RLY2)

3 Circuit B, 1

Compressor Enable Output (RLY3)

4 Circuit B, 2

Compressor Enable Output (RLY4)

5 Alarm Output (RLY5)

Table 3: Factory-Set Default Setpoints - Water Only

Default Setpoints

Description Setpoint

UNSAFE SUCTION 40 PSIG

LOW SUCTION HEAT MODE 100 PSIG

LOW SUCTION COOL MODE 100 PSIG

LOW LEAVING WATER TEMP 37ºF

Water Source Heat Pump Module

Setpoints

The Water Source Heat Pump Module setpoints are preset at AAON

and are based on the unit’s design and type of coolant being used in the

water loop. See Tables 3 & 4 for default settings.

NOTE: These are default settings only. The setpoints may be

different based on the unit’s design and type of coolant

being used. For ﬁ eld adjustment of these setpoints, you

must contact the AAON factory.

Glycol Default Setpoints

Description 20% Glycol 40% Glycol

UNSAFE SUCTION 40 PSIG 40 PSIG

LOW SUCTION HEAT MODE 77 PSIG 45 PSIG

LOW SUCTION COOL MODE 85 PSIG 85 PSIG

LOW LEAVING WATER TEMP 23ºF 0ºF

Table 4: Factory-Set Default Setpoints - Glycol

Revised 12/28/11

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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