Related Manuals for DANDELION Geo DP1G
Summary of Contents for DANDELION Geo DP1G
- Page 1 Dandelion Geo Installation & Operations Manual Packaged Water Source Heat Pump Model DP1G Revision 3...
- Page 2 1515 N. Courthouse Rd. Suite 730, Arlington VA 22201 https://dandelionenergy.com support@dandelionenergy.com Service & Support: 833-GEO-4ALL Visit https://dandelionenergy.com/geo_support or scan the QR code to view the latest digital version of this manual, and other relevant documentation...
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Page 3: Table Of Contents
Common Component Description........................8 Installation Considerations..........................9 Duct Work..............................12 Electrical Considerations..........................13 SECTION 3: UNIT INSTALLATION........................14 Dandelion Geo Installation Steps........................14 SECTION 4: GROUND LOOP REQUIREMENTS....................21 Understanding Local Water Quality.......................21 Determining Ground Loop Water Quality...................... 21 Recommended Antifreeze/H2O Mixture......................22 IGSHPA &... - Page 4 Unit Clearances - Dimensional Data......................47 Unit Specifications by Model......................... 48 Reference Tables............................49 Filter Performance............................52 Filter Information............................52 SECTION 9: ELECTRICAL DATA AND WIRING....................53 Thermostat Connections & Field Wiring......................54 Control Box Board............................55 Emergency Stop (Disconnect) Switch......................56 SECTION 10: UNIT WARNING MARKINGS/SAFETY..................57 Safety................................
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Page 5: Figures & Tables
Table 6 Pressure tap pressure drop vs. loop flow, hardware revision ‘00’........36 Table 7 Pressure tap pressure drop vs. loop flow, hardware revision ‘01’........36 Figure 18 Dandelion Geo external panels................... 37 Figure 19 Internal features - condensate pan cleaning..............39 Table 8 Major Service Components - Common to all Models............ - Page 6 Table 22 Recommended filters......................52 Figure 23 Full system wiring breakout....................53 Figure 24 Thermostat wiring........................ 54 Figure 25 Control box wiring........................55 Figure 26 System disconnect wiring....................56 Figure 27 Electrical warning label......................57 Figure 28 Packaging fragile warning....................57 Figure 29 R-410A refrigerant label....................... 57...
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Page 7: Section 1: Model Identification
SECTION 1: MODEL IDENTIFICATION Understanding Dandelion Model and Specification Data Use the nomenclature decoder below to understand your unit’s initial specifications. Each Geo unit’s model type and specifications are mounted just below the gateway module/gateway blank on both the front and back side of the unit. -
Page 8: Section 2: Pre Installation
If installation is conducted by a third party team, the following should be observed: ● If repairs must be made to damaged goods, then Dandelion should be notified before any repair action is taken in order to protect the warranty. -
Page 9: Common Component Description
SECTION 2: PRE INSTALLATION Common Component Description Main Control Board: Primary circuit board Bi-Flow Filter Drier: Absorbs any excess dirt, assembly for heat pump energization, monitoring, moisture, or particulates in order to maintain clean and control. refrigerant. Voltage Sense Board : Circuit board assembly to Reversing Solenoid Valve: Allows directional measure the unit’s electric current, voltage and... -
Page 10: Installation Considerations
SECTION 2: PRE INSTALLATION Installation Considerations Special care should be taken in locating the geothermal unit. All units should be located in an indoor area where the ambient temperature will remain above 55°F and should be located in a way that piping and ductwork or other permanently installed fixtures do not have to be removed for servicing and filter replacement. - Page 11 SECTION 2: PRE INSTALLATION Figure 2 Return air pattern direction Figure 3 Unit air pad ● Review Access Door Locations This is a multi-positional, vertical package unit. Service access doors are on all four (4) sides of the unit. Clearance information shown is for a right hand return unit.
- Page 12 Figure 5 Emergency stop switch placement Additional Installation Notes ● The Dandelion Geo is designed for indoor use only. ● Unit should not be operated on or around active construction sites. ● Unit should be stored in an upright position at all times.
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Page 13: Duct Work
SECTION 2: PRE INSTALLATION Duct Work All new ductwork shall be designed as outlined in Sheet Metal and Air Conditioning Contractors National Association (SMACNA) or Air Conditioning Contractors of America (ACCA) or American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) handbooks. In summary: ●... -
Page 14: Electrical Considerations
Fuse and Circuit Breaker Information The Dandelion Geo heat pump system runs off 208/230V and the current rating for the system is 10A per nominal ton. There are no in-line fuses for the system. The only circuit breaker for the system is by way of the user’s circuit breaker located at their home breaker panel. -
Page 15: Section 3: Unit Installation
5. Carefully turn the blower with your hand to confirm it turns freely. 6. Assemble and attach the air filter kit (Dandelion PN 2003332 , Figure 10), inserting the hooks from the filter rack into the openings provided below the return air coil, and rotate into place at the top. - Page 16 SECTION 3: UNIT INSTALLATION Dandelion Geo Installation Steps (cont.) Figure 9 Blower bracket and foam support removal Figure 10 Air filter kit...
- Page 17 SECTION 3: UNIT INSTALLATION Dandelion Geo Installation Steps (cont.) 11. Route main power line to the unit (Figure 11): a. Knock-out a conduit connector hole at the top corner of the unit where power entry is best located for the particular installation.
- Page 18 SECTION 3: UNIT INSTALLATION Dandelion Installation Steps (cont.) 13. Route thermostat wires & supply/return air temperature sensors to gateway (Figure 12): a. Determine which side of the unit is best for mounting the gateway for your installation b. Retrieve the gateway module from inside the airbox - note system cables are connected.
- Page 19 SECTION 3: UNIT INSTALLATION Dandelion Installation Steps (cont.) 14. Set voltage taps on the 24VAC control transformer (Figures 13, 13a, and 13b): a. Remove the access panel below the return duct to expose the main controller and 24VAC transformer. b. Ensure the transformer has the properly selected voltage tap of 208/230 VAC (located in the control panel drawer).
- Page 20 Dandelion Installation Steps (cont.) d. Fill the system with clean water + antifreeze mix per IGSHPA & Geo Water Content Standards in this manual (Section 4). Dandelion recommends 25% propylene glycol or 15% methanol. e. Pressurize the system between 20 and 50 PSI.
- Page 21 SECTION 3: UNIT INSTALLATION Dandelion Installation Steps (cont.) Figure 15 Condensate drain linea (Electrical box metal hidden in this view)
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Page 22: Section 4: Ground Loop Requirements
SECTION 4: GROUND LOOP REQUIREMENTS Understanding Local Water Quality conductivity, and pH should be considered to In order to prevent corrosion and scaling of wetted evaluate corrosion risks. internal surfaces of the heat pump and/or biological growth, water of high quality must be used in the Chlorides and sulfates produce high ground loop. -
Page 23: Recommended Antifreeze/H2O Mixture
Recommended Antifreeze/H O Mixture The Geo installation team will combine antifreeze with the water available on-site. The Dandelion Geo is engineered to be used with a ground loop heat exchanger, designed and installed per International Ground Source Heat Pump Association (IGSHPA) guidelines for ground loop systems. -
Page 24: Igshpa & Geo Water Content Standards
As such, the IGSHPA committee has established baseline water quality results listed below from its 2017 Design and Installation Standards which can be found online. The Dandelion Geo water quality specifications are shown below in Table 1. Table 1 Geo water quality specifications... -
Page 25: Section 5: Controls
SECTION 5: CONTROLS Note: Firmware updates which change functionality will be accompanied by an updated IOM, and changes will be documented in the changelog at the end of this document with details on firmware versions. Main Control Board Buttons Gateway Thermostat Board Buttons Rotary Dial Setup Used for scrolling through lists, making selections,... -
Page 26: Lcd Interface Example
SECTION 5: CONTROLS LCD Interface Example Many LCD screens are lists of parameters that can be adjusted. In this screen the list extends past the end of the screen indicated by the down arrow on the bottom right. Figure 16 LCD overview Turning the dial moves the cursor to the desired setting to view or change. -
Page 27: Gateway Status Indicators
SECTION 5: CONTROLS Gateway Status Indicators The two LEDs on the gateway module (referred to as left and right in the table below) indicate what mode of operation the unit is in. Table 2 Gateway Status Indicators Left LED Color and Pattern Right LED Color and Pattern Status White... -
Page 28: Features
SECTION 5: CONTROLS Features Startup/Random Start When the unit powers up, before the compressor or blower can power on, the controller waits for the minimum compressor off duration plus a random duration between 3 and 60 seconds. This delay minimizes current draw from multiple heat pumps being energized at the same time. -
Page 29: Operations
SECTION 5: CONTROLS Operations Fan Only When the thermostat calls for fan (G), the blower operates at the fan speed setting. Heating Part Load When the thermostat calls for part load (stage 1) heating (Y1), the controller waits for any minimum off durations or inter-stage delays to expire. - Page 30 SECTION 5: CONTROLS Table 4 Operating state modes by component Mode Compressor Compressor Reversing Blower* Ground Boost Emergency Part Load Full Load Valve Pumps Heat Heat Idle Heating Part Load OFF (Heat) Heating Full load OFF (Heat) Aux Only / HIGH Emergency Heat Part Load + Aux...
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Page 31: Faults / Alarm States
SECTION 5: CONTROLS Faults / Alarm States Faults listed below are monitored by either mechanical switches in series with the compressor relay or by thermistors monitored by the controller. When any of these indicate a fault condition, the compressor contactor will not engage and the compressor remains off. -
Page 32: Safety Lockout
SECTION 5: CONTROLS Table 5 Alarm state table Safety Switch Trip Point High pressure Discharge pressure > 610 PSI Low pressure Suction pressure < 50 PSI Water freeze protection Temp set based on fluid, default < 32°F Coil freeze protection Near trip <... -
Page 33: Gateway Internet Setup
To check the current firmware version, press RESET on the controller - after a few seconds, the LCD will display the Dandelion logo with the firmware version. If the unit is not internet connected, updates can be performed manually following the instructions below. -
Page 34: Section 6: Equipment Start-Up Procedures
SECTION 6: EQUIPMENT START-UP PROCEDURES Equipment Startup-Process Check the following before power is applied to the equipment. Electrical: update controller to newest required High voltage wiring and breakers are firmware release (see Section 5 for more properly sized and installed detail). - Page 35 SECTION 6: EQUIPMENT START-UP PROCEDURES Equipment Startup-Process (cont.) 12. Check the data in the opposite mode as the previous tests. Current draws as well as temperature differences and flow rate should be recorded. 13. Check auxiliary heat operation by adjusting the thermostat set point 5°F above the room temperature in HEAT mode, or whatever method the particular thermostat requires to engage an AUX heat call.
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Page 36: Water Flow Calculations And Selection
SECTION 6: EQUIPMENT START-UP PROCEDURES Water Flow Calculations and Selection Proper flow rate is crucial for reliable operation of geothermal heat pumps. The performance data tables in Section 11 show two flow rates for each entering water temperature (EWT column). At install water flow needs to be set and the nominal flow rate of (3 GPM/ton) achieved in all modes of operation by a qualified geothermal professional. - Page 37 SECTION 6: EQUIPMENT START-UP PROCEDURES Flow Performance Check (cont.) Table 6 Pressure tap pressure drop vs. loop flow, hardware revision ‘00’ Pressure Delta (dP) at: 30°F [PSI] 50°F [PSI] 80°F [PSI] Tonnage Flow [GPM] Target Minimum Target 12.5 Minimum Target 0.85 Minimum Target...
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Page 38: Section 7: Maintenance And Service
SECTION 7: MAINTENANCE AND SERVICE Air Filter Replacement Dandelion recommends regular replacement of the air filter, every six (6) months or whenever the airflow in the system starts to decrease. The air filter type used by the Geo system is listed in Table 22. -
Page 39: Condensate Pan/P-Trap Cleaning
2. Locate the side of the unit that has the condensate drain. On that same side of the unit (as referenced in Figure 31) remove the top side panel (with the Dandelion logo) by loosening the six (6) phillips head screws that secure the door to the unit. - Page 40 SECTION 7: MAINTENANCE AND SERVICE Condensate Pan/P-trap Cleaning (cont.) NOTE: A snug tightness is sufficient. DO NOT overtighten! If your installation includes a condensate pump, follow the manufacturer’s instructions for cleaning the condensate pump. 11. Restore power to the unit by turning the red power disconnect switch to the ON position. Figure 19 Internal features - condensate pan cleaning...
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Page 41: Common Parts
SECTION 7: MAINTENANCE AND SERVICE Common Parts Table 8 Major Service Components - Common to all Models Dandelion Part Description Part # Main Control Board HEAT PUMP MAIN PCBA 41-0005-00* Gateway Thermostat Board GATEWAY PCBA MODULE 41-0003-00 Transformer TRANSFORMER, 208/230VAC TO 24V, 100VA... -
Page 42: Ton (Dp1G036) Model Parts
SECTION 7: MAINTENANCE AND SERVICE 3 Ton (DP1G036) Model Parts Table 9 Major Service Components - 3 Ton Model Dandelion Part Description Part # Compressor SCROLL COMPRESSOR, 2 STAGE, R410A, 3 TON 37-0001-03 Capacitor 370V / 45 MFD Run Cap... -
Page 43: Ton (Dp1G048) Model Parts
SECTION 7: MAINTENANCE AND SERVICE 4 Ton (DP1G048) Model Parts Table 10 Major Service Components - 4 Ton Model Dandelion Part Description Part # Compressor SCROLL COMPRESSOR, 2 STAGE, R410A, 4 TON 37-0001-04 NOMINAL Capacitor 370V / 35 MFD Run Cap... -
Page 44: Ton (Dp1G060) Model Parts
SECTION 7: MAINTENANCE AND SERVICE 5 Ton (DP1G060) Model Parts Table 11 Major Service Components - 5 Ton Model Dandelion Part Description Part # Compressor SCROLL COMPRESSOR, 2 STAGE, R410A, 5 TON 37-0001-05 NOMINAL Capacitor 440vac / 40 mfd +/- 6%... -
Page 45: Ton (Dp1G072) Model Parts
SECTION 7: MAINTENANCE AND SERVICE 6 Ton (DP1G072) Model Parts Table 12 Major Service Components - 6 Ton Model Dandelion Part Description Part # Compressor SCROLL COMPRESSOR, 2 STAGE, R410A, 6 TON 37-0001-06 NOMINAL Capacitor 440vac / 40 mfd +/- 6%... -
Page 46: Section 8: Unit Data
SECTION 8: UNIT DATA Unit Dimensional Data Figure 20 Unit dimensional data (inches) Notes: Right handed air return configuration. *On DP1G models of hardware revision ‘00’, this dimension should be increased by 0.5” for maneuvering to the install location, to account for mounting studs which extend from the air coil side of the unit. -
Page 47: Accessory Kit Contents
Accessory Kit Contents Dandelion Geo units are provided with a set of components that are intended for field install. These items are contained inside of a plastic bag that’s included with the unit. Inspect and inventory the kit for the following contents:... -
Page 48: Unit Clearances - Dimensional Data
SECTION 8: UNIT DATA Unit Clearances - Dimensional Data Figure 21 Optimal service & operating clearances - dimensional data (inches). Right hand return configuration shown, mirror along dashed line for left hand return. Filter access clearance is only required on one side, not both. Figure 22 Isometric view without panels... -
Page 49: Unit Specifications By Model
SECTION 8: UNIT DATA Unit Specifications by Model Table 14 Unit specifications summary by model Specification DP1G036 (3T) DP1G048 (4T) DP1G060 (5T) DP1G072 (6T) Overall Voltage (1 Phase) 208/230 208/230 208/230 208/230 MCA [A] 30.1 42.4 49.1 55.1 MOP [A] FLA [A] 25.4 35.6... -
Page 50: Reference Tables
SECTION 8: UNIT DATA Reference Tables ACRONYMS LRA (LOCKED ROTOR AMPS): The current a motor will draw if the motor becomes locked/cannot turn. RLA (RATED LOAD AMPS) The maximum current a motor can draw under ANY rated load condition. FLA (FULL LOAD AMPS) The current a motor draws as its rated horsepower. Also, the current a heater draws at its rated voltage. - Page 51 SECTION 8: Unit Data Reference Tables (cont.) Table 16 AHRI performance data Model Full Load Cooling Full Load Heating Part Load Cooling Part Load Heating Capacity Efficiency Capacity Efficiency Capacity Efficiency Capacity Efficiency [BTU/HR] [EER] [BTU/HR] [COP] [BTU/HR] [EER] [BTU/HR] [COP] DP1G036 39200...
- Page 52 SECTION 8: Unit Data Reference Tables (cont.) Table 19 R-410A refrigerant charge and maximum/minimum allowable pressures Hardware Model Refrigerant Refrigerant Refrigerant System Refrigerant System Revision Type Mass [lbs] Max Pressure [PSI] Min Pressure [PSI] DP1G036 DP1G048 DP1G060 DP1G072 R410A DP1G036 DP1G048 DP1G060 DP1G072...
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Page 53: Filter Performance
MERV 13 0.30 Filter Information The filter rack on the Dandelion Geo accommodates 2” filters. Filters are factory default, industry standard sizes and can be easily sourced from local hardware stores. Table 22 Recommended filters Nominal Size ( W x H x D ) -
Page 54: Section 9: Electrical Data And Wiring
SECTION 9: ELECTRICAL DATA AND WIRING Figure 23 Full system wiring breakout... -
Page 55: Thermostat Connections & Field Wiring
SECTION 9: ELECTRICAL DATA & WIRING Thermostat Connections & Field Wiring Figure 24 Thermostat wiring NOTES: ● Drawings represent a typical installation using wiring input knockouts marked on the outside of the control box cover. ● National and local electrical codes must be followed during installation of this unit. -
Page 56: Control Box Board
SECTION 9: ELECTRICAL DATA & WIRING Control Box Board Figure 25 Control box wiring... -
Page 57: Emergency Stop (Disconnect) Switch
SECTION 9: ELECTRICAL DATA & WIRING Emergency Stop (Disconnect) Switch In the event of overvoltage or other emergency conditions, the Dandelion Geo unit includes an Emergency Stop switch. The switch enables full contact separation in all poles and complete disconnection from the supply mains. -
Page 58: Section 10: Unit Warning Markings/Safety
SECTION 10: UNIT WARNING MARKINGS/SAFETY Warning markings physically located on the unit can be found here. Electrical Warning Label Located on the top left corner of all seven Geo removable panels. Figure 27 Electrical warning label Packaging Fragile Warning Located along the top of each side of the Geo unit’s packaging. -
Page 59: Safety
SECTION 10: UNIT WARNING MARKINGS/SAFETY Safety NOTICES, CAUTIONS, WARNINGS, NOTES, & DANGERS Attention should be paid to the following statements: “NOTICE” is a notification of installation, operation, or maintenance information which is important, but is NOT hazard-related. “CAUTION” indicates a potentially hazardous situation or an unsafe practice which, if not avoided, COULD result in minor or moderate injury or product or property damage. - Page 60 SECTION 10: UNIT WARNING MARKINGS/SAFETY Safety (cont.) 9. The system contains refrigerant under very high pressure and must only be serviced by qualified persons. R-410A Max Pressure = 4.2 MPa 10. This system uses R-410A refrigerant and has been tested for safe use where the maximum pressure as determined in Annex EE (UL 60335-2-40) is 4.2 MPa.
- Page 61 SECTION 10: UNIT WARNING MARKINGS/SAFETY...
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Page 64: Section 11: Unit Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G036 Full Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 27.81 20.15 2.24 3.64 75.3 1350 28.53 20.75 2.22 3.76 28.71... -
Page 65: Gp1G036 Partial Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G036 Partial Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 20.28 14.01 1.62 3.67 75.3 1130 20.37 14.14 1.72 3.47 19.93... -
Page 66: Gp1G048 Full Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G048 Full Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 36.96 26.64 3.12 3.47 66.1 1600 37.64 27.43 3.05 3.62 38.17... -
Page 67: Gp1G048 Partial Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G048 Partial Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 26.28 18.14 2.20 3.51 66.1 1350 26.27 18.31 2.23 3.46 25.83... -
Page 68: Gp1G060 Full Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G060 Full Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 1150 47.46 33.78 4.07 3.42 12.5 56.4 1900 47.52 34.80 3.95... -
Page 69: Gp1G060 Partial Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G060 Partial Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 1150 33.73 23.05 2.93 3.38 12.5 56.4 1500 33.55 23.26 2.92... -
Page 70: Gp1G072 Full Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G072 Full Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 1380 54.34 38.88 4.70 3.39 48.1 2300 54.61 40.05 4.57 3.50... -
Page 71: Gp1G072 Partial Load Performance Data
SECTION 11: UNIT PERFORMANCE DATA GP1G072 Partial Load Performance Data HEATING - 70F EAT COOLING - 80/67F EAT FLOW Dp, max AIFLOW Power FLOW Dp, max AIFLOW Power MBtu/hr MBtu/hr MBtu/hr MBtu/hr 1380 39.39 26.73 3.49 3.31 48.1 1800 39.18 26.97 3.48 3.30... -
Page 72: Section 12: Third Party Software
SECTION 12: THIRD PARTY SOFTWARE Raspberry Pi Pico SDK Copyright 2020 (c) 2020 Raspberry Pi (Trading) Ltd. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Page 73 SECTION 12: THIRD PARTY SOFTWARE 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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Page 74: Section 13: Document Revision History
Initial release of revision 2. Functionality reflective of firmware version 0.26 or later, unless otherwise noted 1/30/25 Updated capacity tables to be text based rather than images 63-70 Dandelion Geothermal 1515 N. Courthouse Rd. Suite 730, Arlington VA 22201 https://dandelionenergy.com support@dandelionenergy.com...
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