Intro From Mike 😎
Hey! Mike here—been slinging refrigerant and wrenches for twenty years. This blog is how I’d lay it out on your basement bench: clear, practical, and (yes) a little fun. I dive into installing that Goodman 3‑Ton SEER2 R‑32 system from The Furnace Outlet link—condenser GLXS4BA3610, coil CAPTA3626C3, furnace GR9T961005CN. I’ll walk you through installation protocols, R‑32 safety, wiring, then tackle the most common breakdowns and fixes. Let’s get your comfort sorted!
1. What You're Working With 💼
This system is a performance package: Goodman GLXS4BA3610 condenser (15.2 SEER2, R-32), CAPTA3626C3 coil, and GR9T961005CN furnace (96% AFUE). It’s efficient, clean-burning, and designed for tight installs with future-focused refrigerants.
For a quick tech overview, Goodman’s own page on the GLXS4BA series breaks it down.
2. Pre-Installation Prep
Permits, Safety, and Site
Before you even unbox that condenser, make sure your install is up to UL 60335-2-40 standards. This is critical for any flammable refrigerant (R-32 = A2L class), and many jurisdictions now require it.
Ensure clearances of at least 18 inches all around, and don’t forget the 60-inch vertical clearance rule for air discharge. Slap that unit on a composite pad—level, not “close enough.” You don’t want your new compressor riding a tilt-a-whirl.
3. Electrical & Refrigerant Setup
Line Set, Nitrogen Purge, and Charging
Use 3/4" suction and 3/8" liquid lines; pressure test with dry nitrogen (150 PSI for 30 mins). Never skip the triple evacuation method. That’s how you protect the compressor and hit your micron target (<500 microns, ideally 250).
Factory charge covers ~15 feet—add refrigerant by weight only. Don’t wing it by pressures. R-32 doesn’t play nice with guesswork.
4. Control Wiring and Thermostat Setup
Wire low voltage using the unit diagram (R, C, Y, G, W, O/B). Confirm correct dip switch settings and if using a communicating thermostat, follow Goodman’s installer manual to a tee.
Good blower setup? Match motor taps to static pressure and duct layout. You don’t want a system that breathes like it's got a stuffy nose.
5. Tools & PPE Checklist 🔧
You're gonna need:
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EPA 608 card
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Torque wrench for flare fittings
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Digital micron gauge
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A2L-certified leak detector
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PPE: goggles, gloves, R-32 rated torch
Stay safe, and respect that R-32. It's efficient, but it’s also flammable—like propane’s nerdy cousin.
6. Troubleshooting the Common Problems
System Won’t Start
Check 24V signal at the contactor. If it’s not energizing, could be the float switch, blown fuse on the board, or thermostat wiring. Look for shorted stat wires touching the plenum (I’ve seen it more times than I care to admit).
Low Airflow or Frozen Coil
Dirty filters or undersized returns are usually to blame. If it’s recurring, test static pressure across the coil. For more on airflow testing, ASHRAE has a great breakdown in this ventilation guide.
High Pressure Lockouts
Check condenser coil cleanliness, airflow, and refrigerant overcharge. R-32 is sensitive to overcharging and will spike discharge temps.
7. Maintenance: Your Secret Weapon
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Wash coils quarterly
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Change filters monthly
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Flush the drain line every cooling season
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Calibrate thermostat annually
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Monitor amp draw on blower and compressor at least once a year
Want to go deeper? Energy.gov has a full maintenance checklist that’s solid even for homeowners.
8. Warranty and Compliance
This unit qualifies for 10-year parts limited warranty—but only if it’s registered within 60 days and professionally installed. Make sure your setup matches an AHRI pairing and that you pull permits if required locally.
Looking for official pairing info? Goodman’s AHRI directory is where you verify all matchups.
Wrap Up From Mike 🧰
Whew! If you made it this far, you’ve got my respect—and a serious head start on a clean, code-compliant install. Whether you're a seasoned installer or just HVAC-handy, this system will treat you right if you take the time to install it by the book.
If you're looking to get your hands on this exact setup—condenser, coil, and furnace matched up for maximum efficiency—you can grab it right now at The Furnace Outlet’s product page.
Need more advanced installation tips for this system? Visit: How to Properly Install the Goodman GLXS4BA3610 R‑32 Condenser (with CAPTA3626C3 Coil & GR9T961005CN Furnace).
Just remember: install it smart, charge it by weight, double-check your airflow, and document everything. That’s how you keep callbacks off your calendar and customers comfy all season long.
-Mike out 👊
