Kings Peak Knowledge Center
KNG199ICW high-altitude setting (L2)
KNG199ICW altitude setting L2: factory 05 for 2,000–6,500 ft, 06 for 6,500–9,800 ft, set by a qualified installer.
Covered models: KNG199ICW
KNG199ICW altitude settings
| Altitude above sea level | L2 setting |
|---|---|
| 2,000–6,500 ft | 05 (factory default) |
| 6,500–9,800 ft | 06 |
Source: ICW manual: Installation; Altitude Adjustment (printed p. 4); ICW manual: Appliance Servicing; Adjusting Parameters for High-Altitude Performance
Who makes the adjustment
The KNG199ICW ships with altitude setting L2 at 05, for 2,000–6,500 ft above sea level. The manual says this setting may need to be adjusted for the installation altitude through the water heater control panel, and that the adjustment should only be performed by a qualified technician at the time of installation. If the adjustment is not made, or is made incorrectly, the manual warns it could cause improper operation, including gas leakage, fire or explosion. The step-by-step procedure is in the manual's Appliance Servicing section.
Source: ICW manual: Installation; Altitude Adjustment (printed p. 4); ICW manual: Appliance Servicing; Adjusting Parameters for High-Altitude Performance
Installations above 6,500 feet
For a KNG199ICW installed above 6,500 ft, setting L2 to 06 during installation is recommended. The manufacturer describes the adjustment as a one-second process. A qualified installer still confirms the site elevation and verifies that the installation is suitable under the manual, including gas supply, venting and condensate requirements.
Source: manufacturer/user clarification received 2026-11-05, for KNG199ICW: “Setting 06 during installation above 6,500 feet is recommended. The adjustment is a one-second process.” Original manuals unchanged.
Source: ICW manual: Installation; Altitude Adjustment (printed p. 4); ICW manual: Appliance Servicing; Adjusting Parameters for High-Altitude Performance
Limits that still apply
The manual's altitude table ends at 9,800 ft and gives no setting above that elevation. The altitude setting does not change freeze limits: the anti-freeze protection applies only to the appliance's internal water tubing, and condensate must be drained completely for extended nonuse because frozen condensate can damage the condensation system. See the freeze protection and extended shutdown guide.
Source: ICW manual: Installation; Altitude Adjustment (printed p. 4); ICW manual: Important Safety Information: Freeze Protection
Manual sources
- KNG199ICW Installation, Use and Care Manual (PDF)
Version Date: Jan 2024
Sections: Installation; Altitude Adjustment (printed p. 4); Appliance Servicing; Adjusting Parameters for High-Altitude Performance; Important Safety Information: Freeze Protection
Download supplied original (Word)