Steffes HPB22 Owners Manual - Manual (Page 23)

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F. ELECTRICAL CONNECTIONS
Circuit breakers located in the line voltage compartment (lower right front side of unit) are set up for multi-feed
installations (See Figures 12 and 13). For circuit sizing, see Unit Specifications in Appendix. If single feed is desired,
order Steffes Single Feed Kit, Item #1309000.
Due to different utility strategies, the fan control circuit can either be a separate feed or common to circuit breaker
#1.
HPB's are equipped with 3-speed blowers, factory wired for high speed. For lower output requirements,
motor speed may be adjusted (See Figure 11).
Supply air temperature is monitored by a duct sensor which regulates HPB output through control of the unit's
mixing damper. This sensor, remotely mounted in the main supply air duct (See Figure 7), is connected to the
HPB control panel with 18/4 bell wire. Installer(s) need only follow connection block color coding.
Heat pump interface connections will vary. For proper interface connection, refer to
Figures 15, 16, and 17.
HPB FAN SPEED SELECTION
(FIGURE 11)