Specifications

57
The Smart Choice for Energy Efficiency
Th
he Smart Choice for Energ
TRM Vertical Stack Series 60Hz
Engineering Guide Specs. Rev.: 07/07/06
General:
Furnish and install ClimateMaster Water Source Heat Pumps, as indicated on the plans with capacities and characteristics as
listed in the schedule and the specifi cations that follow.
Vertical Stack Water Source Heat Pumps:
Units shall be low range, 20° to 120°F (-6.7° to 48.9°C) entering water temperature for low temperature application. Equivalent
units from other manufacturers can be proposed provided approval to bid is given 10 days prior to bid closing. All equipment
listed in this section must be rated and certifi ed in accordance with American Refrigeration Institute / International Standards
Organization (ARI / ISO) and Canadian Standards Association (CSA-US). The units shall have ARI / ISO and CSA-US labels. All
cabinets shall be factory tested under normal operating conditions, risers shall be pressure tested and chassis shall be factory
tested under normal operating conditions and water fl ow rates. Units tested without water fl ow are not acceptable.
Basic Construction:
The cabinet panels shall be fabricated from heavy gauge galvanized steel. The rigid one-piece cabinet shall be constructed
so that it is self-supporting, and can be installed long before the chassis arrival, and to be able to avoid damage during
construction. Top, base, fan deck, and other metal structural parts are to be 16 gauge construction, while exterior panels to be
20 gauge; unit further strengthened by structural breaks at corners. Units not constructed of a minimum of these thicknesses
are not acceptable. Cabinet shall have a top panel and a bottom panel for structural rigidity of the cabinet; no “open” top or
“open” bottom designs allowed.
The cabinet base shall contain a secondary drain pan fully insulated with a pressure differential drain trap connected to the
condensate riser pipe, and guide rails for the slide in refrigeration chassis. Drain pan(s) shall be easily accessible for cleaning. All
interior surfaces shall be lined with 1/2 inch (12.7mm) thick, dual density 1-3/4 lb/ft3 (28 kg/m3) acoustic type fi berglass insulation.
All fi berglass shall be coated and have exposed edges butted up to fl anges to prevent the introduction of glass fi bers into the air
stream.
Standard cabinet panel insulation must meet NFPA 90A requirements, air erosion and mold growth limits of UL-181, stringent
fungal resistance test per ASTM-C1071 and ASTM G21, and shall meet zero level bacteria growth per ASTM G22. Unit
insulation must meet these stringent requirements or unit(s) will not be accepted.
Cabinet arrangements shall allow symmetrical placement of riser piping on any of the three sides of the cabinet not used for the
chassis access. All Cabinet openings shall have dry wall fl anges on all sides. Supply air openings shall be factory cut and fl anged
as shown on plans. For air noise attenuation purposes, the discharge air from fan shall discharge into insulated plenum that also
contains insulated air baffl es at all cabinet supply air openings. Units not having supply air noise baffl es are not acceptable.
Cabinet design shall allow a full height base board (5 inches/127mm) beneath the chassis access. The cabinet shall contain an
easily removable motor/blower assembly.
Full length supply, return, and insulated condensate water risers shall be type M copper with integral internal piping including
ball valves (for shut off purposes at unit). Field installed hose kits are required to connect the chassis piping to the cabinet piping.
The condensate riser shall be insulated with 3/8” (9.5mm) Armafl ex type insulation. The top of each riser shall be deeply swaged
(3 in./76.2mm) to accept connection to the riser above/below, allowing for a fl oor to fl oor dimensional variance of ± one inch
(25.4mm). Units not having swaged riser-piping connections shall not be acceptable. Couplings and trim pieces shall not be
allowed.
Option: Type L riser piping.
Option: Unit mounted Thermostat provisions -- includes insulated junction box mounted inside discharge plenum that is
connected to Molex-type connector wired to unit thermostat terminals, and having tile ring on cabinet for drywall
installation to accept thermostat mounting. Use part number A9155724, A9155728 or A9155729 thermostat assembly,
which is thermostat model ATM11C01, ATM11C03 or ATA11C04, respectively with mating Molex-type connector.
Fan and Motor Assembly:
The cabinet shall contain a removable motor/blower assembly. Units shall have a direct drive centrifugal fan. The fan motor