Specifications

Page 8 of 76 SmartSource 2-Stage Water Source Heat Pumps Catalog 1114-1
Four Unique Dehumidication Options:
• SmartDehumidication– Uses hot gas reheat, humidistat, 2-stage thermostat & smart air ow management for precise
humidity control.
• SimpliedDehumidication– Uses a 3-stage thermostat to optimize unit capacity and fan speed for maximum latent
capacity while decreasing room humidity levels.
• HumidistatControlledDehumidication– Uses a humidistat and 2-stage thermostat to control room humidity levels.
• DehumidicationOnly– Uses a humidistat in cooling only mode.
Hot Gas Reheat Coil
For improved indoor climate control, Daikin-McQuay offers
accurate and cost effective dehumidication control using
a hot gas reheat option known as smart dehumidication.
Hot gas reheat with smart dehumidication is an excellent
solution for applications where maintaining low humidity
in a space is crucial. With smart dehumidication, once the
space temperature is satised, the humidistat signal diverts
the high temperature refrigerant gas to the reheat coil locat-
ed downstream of the cooling coil. The conditioned and re-
heated air prevents over cooling of the space and maximizes
moisture removal for improved indoor comfort. The smart
ECM fan system adjusts the air ow for optimal moisture
removal, and helps keep sound levels at a minimum. It is
especially effective during low load conditions when proper
control is critical. Under humid conditions (60%RH) and
typical loop water temperatures, the latent capacity is opti-
mized for approximately 90% of the sensible capacity. With
loop water conditions of 85°F, the leaving air temperature is
approximately the same as the entering air temperature, resulting
in effective dehumidication without over cooling the space.
Desuperheater
The factory-installed desuperheater option saves energy by using
heat that would otherwise be “wasted” to the water loop, and uses
it to supplement the heating of domestic water. The desuperheater
has a double-wall, vented coaxial heat exchanger, an optional wa-
ter pump for 208/230- 1 and 3-phase applications, with controls to
temper the make-up water.
Controls include a refrigerant discharge line thermostat, an
Entering Water Temperature (EWT) thermostat and an “on-off”
switch located on the outside of the unit cabinet to deactivate the
desuperheater system during the heating mode.
This option is available on vertical units sizes 2 tons and larger.
Loop Pump(s)
Unit-mounted loop pump(s), available on horizontal and vertical
unit sizes 2 tons and larger, eliminate the need for a central pump-
ing station. Several loop pump options are available to match the
system ow and head requirements for most geothermal and water
loop applications. Sized for approximately 3 GPM/ton, both low
and high head options are available in a single or dual (series ow)
conguration. The series conguration essentially doubles the head
capabilities. These pumps are available for 115 or 230 volt power.
A factory supplied transformer is provided for single-point power
supply.
Not available with Horizontal units
SmartSource Unique Features
Insulated cover