How do I know the date of manufacture or model of my Raypak heater?
The heater’s model and serial numbers are located on the rating plate found on the inside of the unit. To locate the rating plate, first loosen the door screw. Remove the door(s), pull up and out. The rating plate will be either a gold or silver color with the Raypak logo. The serial number will have 10 digits. The date code is found in the first four digits of the serial number, for example, a unit made in April of 2001 will have the first four digits read as 0104.
