Johnson Controls RH Series Engineering Manual page 6

RH SERIES ENGINEERING GUIDE
Single Hydronic Series cont.
High Efficiency
Large oversized water-to-water refrigerant heat exchangers and
scroll compressors provide extremely efficient operation. The
Aurora Controls extend this innovation and performance.
Operating Efficiencies
• Environmentally friendly R-410A refrigerant reduces
ozone depletion.
• An optional hot water generator is available on 040,
050, 060, and 075 to generate hot water at considerable
savings while improving overall system efficiency.
• High-stability bidirectional expansion valve provides
superior performance.
• Efficient scroll compressors operate quietly.
• Oversized coaxial tube water-to-refrigerant heat
exchanger increases efficiency.
Standard Features
• Heavy gauge cabinet
• Quiet scroll compressors in all models
• All interior cabinet surfaces are insulated with
[12.7 mm] thick 1 1 ⁄ lb. [681 g] density, surface coated,
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acoustic type glass fiber insulation.
®
• Optional IntelliStart to reduce starting current
(208-230/60/1)
• Field switchable control box
• Ultra-compact cabinet
• Multi-density laminate lined compressor blanket designed
to suppress low frequency noise.
• Discharge line mufflers to help quiet compressor
discharge gas pulsations.
Product Quality
• Heavy-gauge steel cabinets are finished with a durable
polyester powder coat paint for long lasting beauty
and service.
• All refrigerant brazing is performed in a nitrogen atmosphere.
• The 018H and 025H are available with load side copper
vented double wall coaxial heat exchangers.
• Coaxial heat exchangers, refrigerant suction lines, hot water
generator, and all water pipes are fully insulated to reduce
condensation problems in low temperature operation.
• Computer controlled deep vacuum and refrigerant
charging system.
• All joints are leak detected for maximum leak rate of
less than 1 ⁄ oz. per year.
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• Computer bar code equipped assembly line ensures all
components are correct.
• All units are computer run-tested with water to verify
both function and performance.
• Safety features include high- and low-pressure refrigerant
controls to protect the compressor; hot water high-limit
hot water generator pump shutdown.
Easy Maintenance and Service Advantages
• Removable compressor access panels.
• Quick attach wiring harnesses are used throughout for
fast servicing.
• High and low pressure refrigerant service ports.
Options and Accessories
• Optional hot water generator with externally mounted
pump (230/60/1) and water heater plumbing connector.
• Closed loop, source side, circulating pump kit
• Closed loop, load side, circulating pump kit
• Water connection kits
• Geo-Storage Tank (80-120 Gal.)
• IntelliStart
• HydroZone, tank control with outdoor reset
• HydroLogic
• HydroStat, communicating set point control
Application Flexibility
• Designed to operate with entering source temperature of
1 ⁄ in. 25°F and leaving load temperatures of 40°F to 130°F. See
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the capacity tables to see allowable operating conditions
per model.
• Source side flow rates as low as 1.5 GPM/ton for well
water, 50°F [10°C] min. EWT.
• Dedicated heating and heat pump models available.
• Dedicated non-reversible models are shipped as
heating only; field convertible to cooling only.
• Modularized unit design and primary/secondary
controls for optimum capacity matching and staging.
• Stackable for space conservation (to a maximum 3
units high).
• Compact size allows installation in confined spaces.
• Front or rear plumbing connections.
• Control Panel location is reversible.
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