Rheem Retex-27 Tankless Water Heater User Manual

Rheem RETEX-27 tankless water Heater

MODELS

• RETEX-04
• RETEX-06
• RETEX-08
• RETEX-11
• RETEX-13
• RETEX-18

• RETEX-24
• RETEX-27
• RETEX-36

Performance Features

• On-demand, consistent and endless  hot water
• Compact and stylish with digital  temperature control in increments of 1°F ranging from 80°F to 140°F*
• 99.8% Energy efficient
• Robust copper immersion heating  elements with brass top increases durability and are threaded for easy replacement
• Simple Installation
• Digital temperature display
• External controls to adjust the temperature in increments of 1°F

Applications

• Whole-Home – up to 6 GPM
• Water-Saver Shower Head – 1.5 GPM
• Standard Shower Head – 2.0 GPM
• Standard Hand Sink – 0.5 GPM
• Kitchen Sink – 1 to 2 GPM
• Bath Tub – ≥ 4 GPM
• Dishwasher – 1 to 2 GPM
• Washing Machine – 1 to 1.5 GPM

Warranty

The 5-Year heating chamber and 1-year parts limited warranty

See written warranty for complete details

RETEX-04 and RETE-08 only show output temperature and are non-thermostatically controlled

PERFORMANCE” tankless electric water heaters

RETEX-04, RETEX-06

Unique Features

• External Digital
  • Display shows outlet temperature
• Durable Copper
  • Immersion single heating element, field serviceable
• Simple Installation
  • 3 Foot electric cable included; Bottom 1/2” NPT water connections

RETEX-08, RETEX-11 RETEX-13

Unique Features

• External Adjustable Digital
  • Thermostatic Control with LED display (+/- 1 degree accuracy)
• Durable Copper
  • Immersion two heating elements, field serviceable
• Simple Installation
  • 3 Foot electric cable included; Side 1/2” compression water connections

RETEX-18

Unique Features

• External Digital
  • Thermostatic Control with LED display (+/- 1 degree accuracy)
• Most advanced self
  • modulation, adjust power to meet hot water demand
• Durable Copper
  • Immersion three heating elements, field serviceable
• Simple Installation
  • Bottom 3/4“ NPT water connections

RETEX-36

Unique Features

• External Digital
  • Thermostatic Control with LED display (+/- 1 degree accuracy)
• Most advanced self
  • modulation, adjust power to meet hot water demand
• Durable Copper
  • Immersion of four heating elements, field serviceable
• Simple Installation
  • Bottom 3/4“ NPT water connections

PERFORMANCE Tankless Electric Specifications

240V units can be used on 208V single phase with 25% reduced temperature output. Please note per UL standards the rating plate and installation instructions will all be according to a 240V applied voltage. Check with local officials prior to derating the electrical infrastructure.

Suggested Specifications

Unit shall have copper-clad immersion heating element(s) with brass terminations for increased durability. External temperature control and display adjustable in 1° increment with a range of 80°-140°F. Display shall be capable of displaying setpoint temperature in Celsius or Fahrenheit temperature scales. Unit shall utilize a flow meter with a 0.3 gpm activation point and manage power based on actual flow rate and inlet temperature. Values should be processed 60 times per second. Unit shall be WQA certified lead-free, certified to UL499 and CSA22.2.

Optional Inline Flow Regulator

• Enhanced outlet temperature control
• Install on the outlet side of the heater
• Limit maximum volume to the specified flow rate to ensure exiting temperature is within an acceptable range
• Flow Regulators for ½“ and ¾“ plumbing connections
• Flow range: 1 to 5 gallons per minute

Suggested Sizing Guide

Selection is based on inlet temperature and an outlet temperature setting of 105°F.

In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.

Rheem Water Heating

• 101 Bell Road
• Montgomery, Alabama 36117-4305
• www.rheem.com

Rheem RETEX-27 tankless water Heater User Manual