Penn P78 Series Installation Instructions

P78 Series Controls for Dual Pressure Applications Installation Instructions
2
Installation
Dimensions
See Figure 1 for control dimensions. These dimensions are nominal and subject to accepted manufacturing
tolerances and application variables.
Mounting
Guidelines: Observe the following guidelines to mount the P78 dual pressure control:
• Mount the control in an accessible position, where the control and pressure-connection lines are not subject to
damage.
• Mount the pressure control upright and level.
• Position the pressure-connection lines to allow drainage away from the control bellows.
• Locate pressure-tap points on the topside of the refrigerant lines to reduce the possibility of oil, liquids, or
sediment accumulating in the bellows, which could cause control malfunction.
• Mount controls with Type 1 enclosures on horizontal or vertical flat surfaces.
Risk of Property Damage.
Mount the P78 Dual Pressure Control according to the instructions and guidelines included with the control. These
instructions and guidelines are intended to reduce the risk of malfunction of the control and resulting property
damage. Failure to follow these instructions and guidelines could cause the control to malfunction, resulting in
property damage.
Risque de dégâts matériels.
Montez le contrôle P78 selon les instructions et directives fournies avec le contrôle. Ces instructions et directives
sont destinées à réduire les risques de mauvais fonctionnement du contrôle et de dégâts matériels. Le non-
respect de ces instructions et directives pourrait provoquer un dysfonctionnement du contrôle et causer des
dégâts matériels.
IMPORTANT: When mounting the control to a flat horizontal surface, use the screws provided and Universal
Mounting Bracket (sold separately) to avoid damaging internal components. Be careful not to distort or bend the
control case when mounting the control to an uneven surface. Using other screws or bending the control case
will void the warranty.
Figure 1: Dimensions of P78 Dual Pressure Control with Type 1 Enclosure, in. (mm)
Style 5 Connection
Style 45 Connection

Penn P78 Series Specifications

General

Brand	Penn
Model	P78 Series
Category	Controller
Language	English