Figure 26 - Pioneer Silver Expansion Board Layout - AAON WH Series Installation Operation & Maintenance

Quick Disconnect Terminals
P1 - Not Used
P2 - 24VAC = 24VAC Power
P3 - COM = 24VAC Common
P4 - HEAT 2 Enable = 24VAC output
P5 - COM = Heat 2 Common
P6 - HEAT 1 Enable = 24VAC output
P7 - COM = Heat 1 Common
P8 - Water Temp Input = Water output
temperature sensor (Entering Water Temp).
To be used with 10k Type III thermistors.
P9 - Water Temp Input = Water output
temperature sensor (Entering Water Temp).
To be used with 10k Type III thermistors.
P10 - Not Used
P11 - Not Used
46

Figure 26 - Pioneer Silver Expansion Board Layout

P12 - AO1 = EC Supply Speed (+VDC),
0-10VDC
P13 - COM = EC Supply Speed (-VDC)
P14 - FAN HIGH = 24VAC Fan High
Speed output
P15 - WTR ECON = 24V Waterside
Economizer output
P16 - COM = Fan High Common
P17 - COM = WTR ECON Common
P18 - COMP2 = 24VAC Compressor Stage
2 output
P19 - COM = Compressor Stage 2 Common
P20 - REHEAT = 24VAC Reheat output
P21 - COM = Common