In the fast-paced modern office environment, central air conditioning is no longer just about "blowing wind"—it directly impacts employee efficiency, year-end electricity bills, and even the boss's mood. A single installation mistake can either lead to overheated conference rooms in summer that "crash," or to such dryness in winter that the keyboard sounds are filled with coughs. And if it leaks, the ceiling becomes a "Water帘洞," with repair costs that can quickly match the price of a high-quality unit.
To ensure administrative, procurement, and engineering heads can understand at a glance"How to Install Central Air Conditioning in the Office?" We break down the five key stages—design, selection, construction, inspection, and maintenance—into 40 actionable checklists, accompanied by real-life pitfalls. Save this article, and it could help you save at least 30% on your budget and 90% on post-installation disputes.
One: Preliminary Design: Don't Let "Head-First" Decisions Determine Cooling Capacity
First, conduct professional load calculations, then discuss the brand.
Personnel Density: 150-200W heat output per person
Device Density: Each computer ≈ 300W, server ≈ 1kW
Glass Orientation: West Exposure Plus 10% Allowance
How to Choose a System?
Multi Split (VRV/VRF): Zoned Control, Energy-Efficient Choice, Ideal for Over 90% of Office Environments
Modular Units: Open Layout, Tight Budget, Expandable in Installments
Water System: Highest comfort level, but only considered if the floor height is ≥3.8m.
3. Fresh air must be synchronized
Each person must have a flow rate of ≥30 m³/h; GB 50736 is the minimum standard, not the benchmark.
Enhanced with F7-grade filtration, the PM2.5 one-time filtration efficiency is ≥80%.
Don't let "lowest bid wins"坑害整个公司 when selecting equipment.
1. Comprehensive Energy Efficiency IPLV≥6.0 (Grade 1 Energy Efficiency), Pitfall Case: Chose an IPLV 4.2 Model, Paid Over 60,000 Yuan in Electricity Bills in Over Five Years
2. Outdoor unit must have at least 1.5m of unobstructed ventilation space; pitfall case: outdoor unit blocked in balcony, high-pressure alarm at 43℃ during summer.
3. Noise Internal Machine≤45dB(A), Pitfall Case: Installing a High Static Pressure Model Above the Conference Room, Resulting in a "Humming Humming" Throughout the Meeting
4. After-sales Network, Local Authorized Dealer for ≥5 Years; Pitfall Case: Small Brand Collapse, Parts Taking Up to 3 Months
Construction Phase: No copper piping, insulation, or condensate water can fail.
1. Copper piping
Utilizing phosphorus-dephosphorized seamless copper tubes with wall thickness of ≥0.8mm
Welding must be nitrogen-filled, maintaining a 40 kg pressure for 24 hours without any drop.
Condensate Water
Slopes of 1% or more, an exhaust port is added every 6 meters.
Conduct "Water Pass + Water Storage" dual tests to eliminate downhill leakage.
Insulation
B1 grade rubber-plastic, thickness ≥15mm, joints require specialized adhesive.
Outdoor sections are reinforced with aluminum sheeting to prevent UV aging.
4. Power Supply
Each external machine is equipped with an individual isolating switch, wire diameter x 1.5 times.
Stay grounded, with 30mA leakage protection x 0.1s
Four: Acceptance: Don't just sign off; let the data speak for itself.
Operated at full capacity for 2 hours
Air outlet and return air temperature difference ≤ 8℃
External machine current, voltage, and high/low pressure are written on the acceptance form.
2. Noise Test
Open office ≤45dB, conference rooms ≤40dB
3. Documentation Transfer
As-built drawings, warranty cards, and operation manuals are indispensable.
Specify a total unit lifespan of ≥2 years and a compressor lifespan of ≥3 years.
Five: Include "After-sales Response Time" in the contract
Quarterly cleaning of filters (especially in the printing area)
2. Conduct annual refrigerant pressure checks to prevent gradual leaks.
3. The external unit heat sinks are power-washed with high-pressure water guns once a year.
4. Fault Response: On-site within ≤4 hours, solution provided within 24 hours
