Nortek REZNOR PHOTON 25 User Manual

MANUAL PART NO. D301310 ISS 0
INSTALLATION, COMMISSIONING AND SERVICING
MANUAL
PHOTON
GAS FIRED UNIT HEATER
Please read this document carefully before commencing installation, commissioning and/or servicing.
Leave it with the end user/site agent to be placed in their premises technical file after installation.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death.
All work must be carried out by appropriately qualified persons.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the connection of the apparatus causing a
dangerous operation possibly resulting in damage to the apparatus and/or environment in which the unit is installed.
These appliances meet the following EC directives
(EU) 2016/426: GAR
(EU) 2016/2281 ErP
DIR 2014/30/EU:EMC
DIR 2014/35/EU:LVD
DIR 2006/42/EC:MD
PH45-LITKIT-UK
Literature Kit UK
ErP
2021
ErP Lot 21
Seasonal Efficiency and
NOx compliant

Nortek REZNOR PHOTON 25 Specifications

General

Input BTU/H	25, 000
Output BTU/H	20, 000
Fuel Type	Natural Gas or Propane
Efficiency	80%
Venting	Direct Vent

Summary

General Product Information

Installer Notices and Warnings

Critical warnings and important notices for installers regarding safety and compliance.

Health and Safety Guidelines

Essential health, safety, and environmental precautions for operating the unit.

Installation Procedures

Heater Location and Mounting

Guidance on selecting the optimal location and safe mounting methods for the heater.

Combustion Air Supply and Flue Arrangement

Requirements for combustion air intake and flue pipe installation.

Appliance Type Specifics (B & C)

Installation details specific to Type B and Type C appliance configurations.

Gas and Electrical Connections

Instructions for safely connecting the gas supply and electrical power.

Commissioning and Operation

Thermostat and Wiring Setup

Pre-Start Checks and Startup

Essential checks before startup and the procedure for initial operation.

Gas Valve and Ratio Adjustments

Commissioning Checks and Handover

Procedures for verifying performance and handing over to the user.

Burner Operation and Safety Limits

Maintenance and Servicing

Annual Maintenance Schedule

Recommended maintenance tasks and frequency for the unit.

Gas Valve and Venturi Servicing

Unit Operation Verification

Fault Finding Guide

Troubleshooting Flowcharts

Diagnostic flowcharts to identify and resolve common operational issues.