The Geo-Flo Universal Pump Controller (UPC-GEO), is a 24VAC powered controller that operates a one- or two-pump variable speed flow center system or variable speed pump via a PWM or 0-10V signal to provide accurate pump control and feedback resulting in the lowest possible power consumption for the pump(s) and system. Instantaneous pump power in Watts is displayed on the back-lit LCD along with other system parameters depending on which sensors are installed. [NOTE: The instantaneous power display is calculated from a PWM output signal from the variable speed pump and current measurement and power factor for the constant speed pump and is only valid for the Magna GEO 32-140, UPMXL 25-124, and the UP26-99 pumps. Other pumps can be controlled, but the power display is not valid]. The installation technician decides whether to control the pump speed based on flow rate set points or differential temperature (ΔT) set points. Installing a single Grundfos Vortex Flow Sensor (VFS) with the UPC- GEO allows the system to be controlled using a flow rate set point input into the controller based on the requirements of the heat pump or system. The controller allows separate flow rate inputs for two-speed (stage) heat pumps, which results in substantial energy savings due to lower flow rate requirements in first-stage heat pump operation. The Grundfos Vortex Flow Sensor provides both flow rate and temperature feedback which is displayed on the controller. Differential temperature (ΔT) control requires the addition of two 10k thermistors and allows separate ΔT inputs for heating and cooling modes. Installing both a VFS sensor and thermistors allows the UPC-GEO to display flow rate, EWT (entering water temperature), LWT (leaving water temperature), ΔT, and heat of extraction/rejection in KBTU/H. Two lockout modes allow the installer to choose whether to lock the system parameters so they cannot be inadvertently changed or to lock the screen so the feedback (temperatures, flow rate, power, etc.) are not displayed. A Meter mode is included which allows the UPC-GEO to display temperature, flow, and kBtu parameters but does not control the pump(s). This Meter mode is useful when simply monitoring the flow rate and/or system temperature of any hydronic system.
| PN | Description | U.O.M | Photo |
|---|---|---|---|
| 2943 | Hose Clamp 3/4" to 1-3/4", Stainless Steel (use with 1" hose and 3693) | Each |  |
| 3683 | Flow Sensor and Tube, VFS10-200 (Includes retaining clip and O-rings; requires 4567 cable, fittings, and 3695 nuts) | Each |  |
| 3693 | 1" Hose Barb X VFS10-200 Flow Tube, Brass, Single Fitting (for use with 3683) | Each |  |
| 3695 | Nut, G1-1/4", Acetal (for use with 3683) | Each |  |
| 3699 | Wire Harness, VS Pump Low Voltage | Each |  |
| 3759 | 1" PVC Male X 10-200 Flow Tube, Single Fitting (for use with 3683) | Each |  |
| 3986 | Thermistor, 10K, 1/4" MPT, Brass | Each |  |
| 4062 | Controller, UPC-GEO, Stand Alone | Each |  |
| 4229 | UPC-GEO Controller, Panel Mount | Each |  |
| 4567 | Cable, VFS10-200 X Molex Micro-Blade (use with 3683) | Each |  |