Raypak 1005 operating instructions Combustion Air Filter, Direct Vent

Combustion Air Filter

This heater is supplied with an integral combustion air filter. This filter will reduce the amount of particulates passed through the combustion system and heat exchanger but will not protect against chemical inside air contamination (See Appendix). The filter must be checked periodically to verify that adequate combus- tion air is being supplied to the heater. See the Maintenance section of this manual for information on checking the filter and establishing service intervals.

Direct Vent

If outside air is drawn through the intake pipe directly to the unit for combustion:

1.Convert the unit to draw air through an air intake duct at the rear of the cabinet. As shipped, XTherm heaters draw combustion air from inside the cabinet.

2.Turn off all power to the heater.

3.Ensure that the heater is cool to the touch before proceeding with the installation.

4.Remove both the left and right rear side access panels.

Fig. 7: Remove the Rear-side Access Panels

5.From the right-rear side access area, install the inside air intake cover panel using the nine hex- head screws provided (see Fig. 8).

Fig. 8: Install the Inside Air Intake Cover Panel

6.Optional—For applications where condensation may form on cold intake air ducting, install the con- densate drip pan to the bottom of the air filter box using the four screws provided (make sure the pan is angled slightly downward toward the rear of the heater as shown in Fig. 9).

7.Remove the air intake cover panel by removing the 5 phillips head screws holding it in place.

Air Filter

Access

Panel

Air Intake

Cover Panel

Fig. 10: Remove the Air Intake Cover