Heat Controller HEV/H Electrical - Power Wiring, Hev/H Series, HER Single Phase Line Voltage

Heat Controller, Inc. HEV/H SERIES Installation, Operation & Maintenance

ELECTRICAL - POWER WIRING

Power Connection

Line voltage connection is made by connecting the incoming line voltage wires to the “L” side of the contactor as shown in Figures 18. Consult Table 4 for correct fuse size.

208 Volt Operation

All residential 208-230 Volt units are factory wired for 230 Volt operation. The transformer may be switched to the 208V tap as illustrated on the wiring diagram by switching the red (208V) and the orange (230V) wires at

Blower Speed Selection

PSC (Permanent Split Capacitor) blower fan speed can be changed by moving the blue wire on the fan motor terminal block to the desired speed as shown in Figure

19.Units are shipped on the medium speed tap. Consult engineering design guide for specific unit airflow tables. Typical unit design delivers rated airflow at nominal static (0.15 in. w.g. [37Pa]) on medium speed and rated airflow at a higher static (0.4 to 0.5 in. w.g. [100 to 125 Pa]) on high speed for applications where higher static is required. Low speed will deliver approximately 85% of rated airflow at 0.10 in. w.g. [25 Pa].

Figure 18: HER Single Phase Line Voltage

Fieldld Wiring

Special Note forAHRITesting: To achieve rated airflow for AHRI testing purposes on all PSC products, it is necessary to change the fan speed to “HI” speed. When the heat pump has experienced less than 100 operational hours and the coil has not had sufficient time to be “seasoned”, it is necessary to clean the coil with a

Contactor -CC
L2	L1
Unit Power Supply
See electrical table for
breaker size

Capacitor

Grnd

mild surfactant such as Calgon to remove the oils left by manufacturing processes and enable the condensate to properly “sheet” off of the coil.

	BR
	CXM
CB	Control
	Low
Transformer	Voltage
	Connector

Figure 19: PSC Motor Speed Selection

Connect the blue wire to:

H for High speed fan

M for Medium speed fan

L for Low speed fan

Medium is factory setting

Fan Motor

HWG Wiring

The hot water generator pump power wiring is disabled at the factory to prevent operating the HWG pump “dry.” After all HWG piping is completed and air purged from the water piping, the pump power wires should be applied to terminals on the HWG power block PB2 as shown in the unit wiring diagram. This connection can also serve as a HWG disable when servicing the unit.

23