CPC 814.0 / high-rise office Mechanical Specification
What it means on the job
Direct connection to the sanitary sewer is not permitted for condensate drains, regardless of whether a P-trap is installed. CPC 814.0 requires condensate to discharge through an indirect waste connection. The high-rise office specification specifically requires the CRAC condensate to spill to a lavatory tailpiece, which provides a visible air gap and ensures the discharge is observable. A direct connection would hide any condensate flow problems and could allow sewer gas to reach the server room if the trap seal is lost. The visible spill point also serves as a diagnostic indicator — if the lavatory is constantly wet, maintenance knows the CRAC is producing excessive condensate.
Tested in 2 CraftIQ puzzles
- whats-wrongCRAC Unit Condensate Drain (high-rise office Level 31)
- code-checkhigh-rise office CRAC Condensate Direct Connection
Related OTHER sections
CPC 402.0 / ASME A112.19.2 / high-rise office Plumbing Specification
The installed urinals exceed the specified flush volume by 4x. high-rise office requires 0.125 GPF (pint-flush) urinals, not 0.5 GPF. While 0.5 GPF meets the CPC 2022 minimum standard, the project specification is more stringent for LEED water use reduction credits. The contractor must install the 0.125 GPF urinals specified. Using 0.5 GPF urinals would cause the project to fail its LEED water budget calculations and could jeopardize the entire LEED certification.
CPC 402.0 / California Green Building Standards
Per CPC 2022, kitchen faucets must default to 1.8 GPM maximum. The temporary increase to 2.2 GPM is permitted only for pot-filling or similar tasks and must require manual activation. The default setting must be 1.8 GPM or less.
CPC 604.1 / high-rise office Plumbing Specification
high-rise office specifications require Type L copper for above-floor domestic water piping. Type M has thinner walls and is not rated for the higher pressures found in high-rise buildings. Type K is required for underground installations.
Crestline BAS Specification
Despite the RTDs being more accurate, they do not meet the specification. The spec requires 10K ohm Type 2 thermistors, not RTDs. This is not about accuracy — it is about standardization and interchangeability. If the building uses 10K Type 2 thermistors throughout, any sensor can be replaced with any manufacturer's 10K Type 2 product without reprogramming the controller. RTDs have a different resistance curve, different wiring (often 3-wire or 4-wire vs. 2-wire), and require different analog input configuration. Mixing sensor types creates a maintenance nightmare.
Crestline BAS Specification / ASHRAE Guideline 13
Crestline specifications require that the building owner have full access to update, modify, and maintain all BAS components including controller firmware. Systems that require vendor involvement for routine maintenance violate the owner-access requirements of the specification.
Crestline BAS Specification / ASHRAE Handbook — Fundamentals
The probe insertion is inadequate. At 6 inches into a 36-inch duct, the probe extends only 17% into the duct width — well short of the required 25-50% (which would be 9-18 inches). A shallow probe reads the boundary layer temperature near the duct wall, which is influenced by heat gain or loss through the duct wall and does not represent the bulk airstream temperature. For a 36-inch duct, the probe should extend at least 9 inches (25%) and ideally 12-18 inches (33-50%) to read the core airstream temperature accurately.
CraftIQ explanations are original educational commentary written in trade language and verified against the cited standards. Always confirm requirements against the code edition adopted by your jurisdiction — this is training material, not a substitute for the code book or your AHJ.