User Manual

E 5 2 8 P r o d u c t G u i d e P a g e 9 o f 1 8
24VAC harness (INNCOM Part # 62-1464 R)
Pin Color Typical Function
1 Green Ground
2 Red 24VAC
3 Black Common
4 Blue High Fan
5 Brown Medium Fan or Second Stage Heat
6 Yellow Cold Water Valve (FCU) or Compressor Signal
(Heat Pump)
7 White Hot Water Valve (FCU) or Reversing Valve
(Heat Pump)
8 Grey Valve Power
9 Violet Fan Power
10 Orange Low Fan
Table 5. 100-277VAC Harness Color Code, Pinout, and Typical Functions
100-277VAC harness (INNCOM Part # 62-1455)
Pin Color Typical Function
1 Green Ground
2 Black Line
3 White Neutral
4 Yellow High Fan
5 Orange Medium Fan or Second Stage Heat
6 Red Cold Water Valve (FCU) or Compressor Signal (Heat
Pump)
7 Brown Hot Water Valve (FCU) or Reversing Valve (Heat
Pump)
8 Grey Valve Power
9 Violet Fan Power
10 Blue Low Fan
Wiring: The steps below provide an overview of the wiring process. Refer to the as-built wiring diagrams
provided for exact details.
1. If applicable, use wire nuts to connect the 6-pin low-voltage harness wires to the applicable low-voltage
communication (if e528 is part of a wired RS485 centrally controlled system), door/window switch, or
external PIR wiring within the electrical box (Figure 8). Plug the 6-pin low voltage harness onto the e528 low
voltage comm. / device connection header.
2. Use wire nuts to connect the 10-pin Molex wiring harness to the power and valve/fan control signal wires
within the electrical box.
3. Plug the pre-wired 10-pin connector into the female receptacle at the back of the e528.
4. Hook the tabs at the top rear of the e528 housing into the matching depressions at the top of the mounting
plate and rotate the bottom of the housing toward the wall until it snaps into place on the mounting plate.
5. Secure the housing to the mounting plate with the two small screws removed in Step 1 of the Mounting section.
6. Apply power to the e528 by closing the applicable supply breaker. Verify that the e528 powers up. Several
values should begin appearing on the LCD display.
7. Once installed and connected to power, the e528 Digital Thermostat typically requires some configuration,
specifically:
• If installing the e528 as part of a networked, centrally controlled EMS, a unique network address must be
assigned to the e528. This is done by entering Service Parameter mode on the e528 and changing the