48 PB
MAINTENANCE
Servicing / Chassis Quick Change Outs
The chassis is designed for quick disconnect and change out.
For minor electrical service, the Electrical Access Panel is
easily removable once the screws are removed. For major
electrical,refrigeration and fan service the chassis may be
removed from utility closet.
Electrical Shock Hazard
Pull out electrical disconnect on front of
before servicing.
Failure to do so can result in property
damage, personal injury and/or death.
Performing Routine Maintenance
With proper maintenance and care, your system will
operate economically and dependably. Maintenance can be
accomplished easily by referring to the following directions.
However, before performing any maintenance, see above
stated WARNING.
WARNING
CUT/SEVER HAZARD
Be careful with the sharp edges and corners.
Wear protective clothing and gloves, etc.
Failure to do so could result in serious injury.
Replace Air Filter
A dirty air filter reduces the efficiency of your VRP unit and allows lint and dirt to accumulate on the indoor‑air coil. Lint and dirt on
the indoor‑ air coil can damage your unit.
The air filter should be replaced as it becomes dirty. To replace the chassis mounted return air filter:
1. Slide the holders away from the filter.
2. Remove the filter.
3. Install a new disposable filter.
4. The unit filter size is 14″ x 20″ x 1″
NOTE: DO NOT OPERATE YOUR SYSTEM
WITHOUT A FILTER IN PLACE OR BLOCK THE FRONT OF THE UNIT RETURN AIR OPENING.
To Remove the Chassis from the Closet:
A. Switch the wall controller off.
B. Disconnect the power coming into the unit from the main breaker panel or the closet mounted disconnect.
C. Disconnect the electrical connection.
D. Disconnect the duct work.
E. Slide the chassis out of the wall plenum.
F. Slide and slightly lift the chassis out of the utility closet.
Inspect and Clean Indoor Air Coil
Eventually, minor amounts of lint and dirt may pass through the filter and collect on the indoor‑air coil. These minor accumulations
can be carefully vacuumed away with a brush attachment on a vacuum cleaner. Care must be taken to avoid bending the aluminum
fins on the coil. Bent fins should be straightened using a special fin tool available from most HVAC supply depots.
Inspect Outdoor Air (OA) Intake and Exhaust
The unit’s outdoor‑air intake and outdoor‑air exhaust paths must remain clear. Keep it free of all debris, snow, or ice. The OA intake
should also be kept free of obstructions. Blocking the OA exhaust or OA intake opening will reduce the efficiency of your unit and
could damage it.
Inspect and Clean Condensate Drain
The condensate drain must be routed to a suitable drainage area. Check the unit condensate drain periodically. Keep it free of
anything that may block or impede the flow of condensate water. If there is any accumulation of foreign matter in the drain pipe, it
should be removed and cleaned. The entire drain line must be protected from freezing.
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