Specifications

Page 62 of 76 SmartSource 2-Stage Water Source Heat Pumps Catalog 1114-1
Engineering Guide Specications
Horizontal Unit
General
Units shall be supplied completely factory assembled, piped, internally wired, fully charged with R-410A and capable of
operation with an entering water temperature range from 55°F to 110°F on water loop models, 30°F to 110°F on geothermal
ground loop and ground water models. All equipment must be rated and certied in accordance with ARI / ISO 13256-1
and must be tested, investigated, and determined to comply with the requirements of the standards for Heating and Cooling
Equipment UL-1995 for the United States and CAN/CSA-C22.2 NO.236 for Canada. The units shall have AHRI/ISO and
ETL-US-C labels. Each unit shall be run tested at the factory. The installing contractor shall be responsible for furnishing and
installing Daikin-McQuay Water Source Heat Pumps as indicated on the plans and per installation instructions.
Casing and Cabinet
The outer cabinet shall be powder-coat painted as standard color textured paint. The cabinet shall be fabricated from heavy
gauge G-60 galvanized sheet metal with interior surfaces lined with the following insulation options:
Standard insulation in the compressor compartment shall be ½" berglass – multicoated type. Standard insulation on the air
side shall be ½" berglass cleanable foil faced type with edges sealed or tucked in order to prevent introduction of bers into
the discharge air. Standard cabinet insulation must meet NFPA 90A requirements, air erosion and mold growth limits of UL-
181, fungal resistance test per ASTM-C1071 and ASTM G21, and shall meet zero level bacteria growth per ASTM G22. All
insulation shall have a ame spread of less than 25 and a smoke developed classication of less than 50 per ASTM E-84 and
UL 723.
■ Factory-installedoption1: Compressor Section and/or Air Handling Section
• 1/2-inch thick, 1-1/2 lb. [1/2" thick coated glass ber insulation foil faced ber insulation for ease of cleaning.
■ Factory-installedoption2: Compressor Section and/or Air Handling Section
• 3/8-inch thick closed-cell non-brous IAQ insulation
A geothermal extended range option shall be available for units and is made up of a refrigerant metering device (TXV) and
wrapped condenser coil. Closed cell insulation shall be added to the internal water lines and on suction side refrigerant tubing
including refrigerant to water heat exchanger.
Units shall be congured in one of the following airow arrangements:
• Left Return/End Discharge
• Left Return/Straight Discharge
• Right Return/End Discharge
• Right Return/Straight Discharge
Units shall have a factory-installed, 4-sided, 1" duct ange on the discharge of the blower to allow connection of eld duct-
work and must have a minimum of two access panels, one for the compressor compartment and one for the blower compart-
ment. Unit shall have an insulated panel separating the blower compartment from the compressor compartment. Units are to
ship with heavy metal brackets, rubber isolators, fasteners and washers to suspend and isolate the unit from the building.
Cabinets shall have separate openings and knockouts for entrance of line voltage and low voltage control wiring. Supply and
return water connections shall be FPT ttings and shall be securely mounted ush to the cabinet corner post allowing for con-
nection to a exible hose without the use of a back-up wrench.
It is the installing contractor’s responsibility to provide sufcient clearance so that units can be easily removed for servicing.
Drain pan
Unit shall utilize corrosion resistant closed-cell insulated stainless steel drain pans. A stub out connection shall be provided.
The drain pan shall be designed to ensure no pooling of condensate water per ASHRAE 62.2. The unit will be supplied with
solid-state electronic condensate overow protection as standard. Mechanical oat switches will not be accepted.
Filter Rack and Filters
Unit shall come standard with a 2-inch disposable lter and a 2-inch, 4 sided factory-installed combination lter rack/return
air duct collar. The lters shall be removable from either side of the unit.
As selectable options, unit shall have a 2-inch thick MERV 8 OR 4 inch MERV 13 lter, factory-installed with a 2-inch or 4
inch factory-installed combination lter rack/return air duct collar.
All lter racks shall be gasketed between the lter rack and the unit cabinet along with a gasket on the tool-less removable
door to achieve a leakage rate of less than 4 CFM per square foot of lter area at .5” ESP. The rack shall be 4-sided with door
and duct collar.