XTherm Condensing Water Heaters, 2505-4005

The all-new XTherm - vertical modulating condensing heater in sizes to 4000 MBTU. XTherm combines time-honored high-recovery copper fin technology with cutting edge control and combustion advancements. The installer and building owner enjoy broad installation flexibility, easy commissioning, and long term reliability.

Features:

97% efficiency. Condensing, Cat IV venting required
Brass headers with copper finned-tube primary heat exchanger. Cupro-nickel tubes available as options. CSA Low Lead Certified 5.25% lead
Minimum continuous inlet water temperature (50°F)
Electronic modulating gas valve and burner, up to 12.5:1 turndown
On-board diagnostic center, real English, no codes
All models indoor/outdoor construction
Complete cabinet protects all controls and wiring
Certified under BAA!MD rule 7 - LowNOx
Suitable for altitudes up to 10,000 ft. (derate above 5,000 ft.)
Primary-secondary piping required.
0-10 VDC Remote set-point BMS Interface
0-10 VDC Direct Drive
Available for natural gas or propane
VERSA IC® control package with built-in outdoor reset function. 7" touchscreen display, including system sensor, indirect sensor & indirect supply sensor
Cascade control of up to 8 units, no external sequencer required..
Modbus® RTU port (RS485)

Options:

BACNet IP, BACnet MS/TP, Modbus TCP, N2 Metasys (B-85)
Lonworks (B-86)
Alarm with 4” Bell (E-5)
Low Water Cutoff (F-10)
Condensate Neutralizer (Z-12)

Specification

The XTherm combines the proven capability of a finned copper or cupronickel tube heat exchanger with a stainless steel condensing heat exchanger to maximize thermal efficiency and provide long-term reliability.
- 97% thermal efficiency at full rate
- 100% factory fire-tested
- VERSA IC® modulating controller with 7" color touchscreen display
- Raymote™ IoT connectivity standard
- Full electronic modulation, 60% min fire under normal conditions
- Full safety diagnostics with history
- Status display lights
- Cascade up to 8 heaters - no external sequencer required
- Modbus RTU BMS port CSA low-lead certified ≤ .25% lead
- Maximum outlet water temperature: 200ºF (93ºC)
- Maximum tank set-point temperature: 160ºF (71ºC)
- Minimum inlet water temperature: 50ºF (10ºC)
- Limited 25-year thermal shock warranty
- Limited 5-year copper/10-year cupronickel primary heat exchanger warranty
- Limited 10-year stainless steel condensing heat exchanger warranty
- SCAQMD Rule 1146.2 certified, Ultra-Low NOx < 20 PPM
- Must be used in conjunction with a storage tank for proper operation
- Proudly assembled in the USA