T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Tranquility
®
Compact Belt Drive (TCH/V) Series
Rev.: July 25, 2017
33
c l i m a t e m a s t e r. c o m
Water-Loop Heat Pump Applications
Figure 12: Typical Water-Loop Application
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the LT1 jumper (JW3) should
be clipped to select the low temperature (antifreeze
10.0°F [-12.2°C]) setpoint and avoid nuisance faults (see
“Low Water Temperature Cutout Selection” in this
manual).
Note: Low water temperature operation
requires extended range equipment.
Commercial Water Loop Applications
- Commercial
systems typically include a number of units connected
to a common piping system. Any unit plumbing main-
tenance work can introduce air into the piping system;
therefore air elimination equipment is a major portion
of the mechanical room plumbing. In piping systems ex-
pected to utilize water temperatures below 50°F [10°C],
1/2” (13mm) closed cell insulation is required on all pip-
ing surfaces to eliminate condensation (extended range
units required). Metal to plastic threaded joints should
never be used due to their tendency to leak over time.
Tefl on tape thread sealant is recommended to minimize
internal fouling of the heat exchanger. Do not over
tighten connections and route piping so as not to
interfere with service or maintenance access. Hose kits are
available from ClimateMaster in different confi gurations
as shown in Figure 12 for connection between the unit
and the piping system. Depending upon selection,
hose kits may include shut off valves, P/T plugs for
performance measurement, high pressure stainless steel
braided hose, “Y” type strainer with blow down valve,
and/or “J” type swivel connection. Balancing valves and
an external low pressure drop solenoid valve for use in
variable speed pumping systems may also be included in
the hose kit.
The piping system should be fl ushed to remove dirt,
piping chips, and other foreign material prior to
operation (see “Piping System Cleaning and Flushing
Procedures” in this manual). The fl ow rate is usually set
between 2.25 and 3.5 gpm per ton [2.9 and 4.5 l/m per
kW] of cooling capacity. ClimateMaster recommends 3
gpm per ton [3.9 l/m per kW] for most applications of
water loop heat pumps. To ensure proper maintenance
and servicing, P/T ports are imperative for temperature
and fl ow verifi cation, as well as performance checks.
Water loop heat pump (cooling tower/boiler) systems
typically utilize a common loop, maintained between 60
- 90°F [16 - 32°C]. The use of a closed circuit evaporative
cooling tower with a secondary heat exchanger between
the tower and the water loop is recommended. If an
open type cooling tower is used continuously, chemical
treatment and fi ltering will be necessary.
(by others)
Thermostat
Wiring
Insulated supply duct with
at least one 90 deg elbow
to reduce air noise
Return Air
Supply Air
Unit Hanger
3/8" [10mm] threaded rods
Flexible Duct
Connector
Optional
Balancing Valve
Water Out
Optional Low Pressure Drop Water
Control Valve
Stainless steel braid hose
with integral “J” swivel
Building
Loop
Water In
Ball valve with optional
integral P/T plug
Unit
Power
CAP
CAP
EAP
BSP
CBP
