2
Manufactured in Rome, NY, USA
VPAC/VPHP
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• Front mounted control box
• Manual fresh air damper
• Microprocessor control board
- Universal control board: can be used in straight
cool electric, hydronic heat, or cooling/heat
pump applications.
- Fan purge: fan remains on for 60 seconds af-
ter heat/cool call is dropped (“auto” mode only)
- Anti-short cycle compressor protection
- Random start timer: prevents multiple units
from simultaneous start-ups (straight cool only)
- Freeze protection: prevents evaporator freeze
ups
- Low ambient lockout: prevents compressor op-
eration in cold outdoor temperatures.
- Test operation: all timers are eliminated to al-
low ease of testing after installation (straight cool
only)
- Compatible with fossil fuel, electric heat, mer-
cury or electronic thermostats
- Refrigerant hot gas bypass for operation in low
outdoor ambient conditions (cooling cycle only)
OPTIONAL CONTROLS AND COMPONENTS
• Supplemental electric heat
• 265/277V (contact factory for availability)
• Painted condenser louver
• Remote wall thermostat
• Return air access panel (w/disposable return air
filters)
ELECTRICAL WIRING
WARNING
Before accessing the control compartment, discon-
nect power to the unit. Failure to do so could result
in serious injury or electrical shock.
All field wiring must be done in accordance to NEC
and local codes. Check the unit rating plate for circuit
ampacity and breaker(s) or fuse size(s). Use only
HACR type breakers or time delay fuses. Select the
proper wire for the ampacity rating. Some units re-
quire more than one power supply. Check the name-
plate and wiring diagram for further instructions.
IMPORTANT:
The unit is wired for 230V primary
voltage from the factory. The transformer must be
rewired by the installer if the jobsite voltage is 208V.
Each vertical unit is equipped for a 24V wall thermo-
stat connection.
STANDARD CONTROLS AND COMPONENTS
• Cooling or heat pump chassis w/high efficiency
scroll or reciprocating type compressor
• Custom wall sleeve
• Anodized aluminum outdoor louver for field in-
stallation (optional colors available)
For designed performance, sound levels,
and service, maintain a minimum of 6” on
both sides and front
for non-ducted return
air applications only.
Ducted return air applications only require
minimal spacing for service requirements.
Consult ECR Engineering if these mini-
mums can not be met. Depending on the
application and return air introduction,
some reconfiguration is likely to be accom-
modated.
ROUGH WALL SLEEVE OPENING
Unit Size
Width
Height
30
28 9/16"
32 3/8"
36
28 9/16"
36 1/4"
6”
6”
6”
FIGURE 1 - EXPLODED VIEW OF TYPICAL INSTALLATION
