c l i m a t e m a s t e r.c o m
21
Tranquility
®
(TRL) Series
R e v. : N o v e m b e r 1 1 , 2 0 2 1
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Piping Installation
Installation of Supply and Return Piping
Follow these piping guidelines.
1. Install a drain valve at the base
of each supply and return riser to
facilitate system flushing.
2. Install shut-off / balancing valves and
unions at each unit to permit unit
removal for servicing.
3. Place strainers at the inlet of each
system circulating pump.
4. Select the proper hose length to allow
slack between connection points.
Hoses may vary in length by +2% to
-4% under pressure.
5. Refer to Table 3. Do not exceed the
minimum bend radius for the hose
selected. Exceeding the minimum bend
radius may cause the hose to collapse,
which reduces water flow rate.
6. Before connecting the hose kits to the
supply and return water connections,
remove the threaded pipe caps and
dispose
Insulation is not required on loop
water piping except where the piping
runs through unheated areas, outside
the building or when the loop water
temperature is below the minimum
expected dew point of the pipe ambient
conditions (insulation is required for
ground loop applications in most climates).
Pipe joint compound is not necessary
when plumbing pipe thread tape is
pre-applied to hose assemblies or when
flared-end connections are used. If
pipe joint compound is preferred, use
compound only in small amounts on
the external pipe threads of the fitting
adapters. Prevent sealant from reaching
the flared surfaces of the joint.
Note: When antifreeze is used in the
loop, ensure that it is compatible with
the plumbing pipe tape or pipe joint
compound that is applied.
Maximum allowable torque for brass
fittings is 30 ft-lbs [41 N-m]. If a torque
wrench is not available, tighten finger-
tight plus one quarter turn. Tighten steel
fittings as necessary.
Optional pressure-rated hose assemblies
designed specifically for use with
ClimateMaster units are available. Similar
hoses can be obtained from alternate
suppliers. Supply and return hoses are
fitted with swivel-joint fittings at one end
to prevent kinking during installation.
All units come standard with and
require a minimum 20 mesh water
strainer located on the water inlet side.
Installations not using a minimum
20 mesh water strainer will void all
warranties. Braze plate heat exchangers
contain small water cavities. Blockage
of water flow cavities within the heat
exchanger from water containing
contaminants could cause a critical
failure of the heat exchanger which
could result in flooding.
Table 3: Metal Hose Minimum Bend Radii
Hose Diameter
Minimum Bend Radii
1/2" [12.7mm]
2-1/2" [6.4cm]
NOTICE! Do not allow hoses to rest
against structural building components.
Compressor vibration may be transmitted
through the hoses to the structure,
causing unnecessary noise complaints.