Piping Installation - Heat Controller HKV Installation, Operation & Mainenance Manual

IOM Instructions

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 1. 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. Install an angle adapter to
avoid sharp bends in the hose when the radius falls
below the required minimum.
CAUTION!
CAUTION! Piping must comply with all applicable codes.
Table 1: Metal Hose Minimum Bend Radii
Hoses in Inches
1" [25.4mm]
1.25" [31.8mm]
1.5" [38.1mm]
Insulation is not required on loop water piping except
where the piping runs through unheated areas or outside
the building or when the loop water temperature is below
the minimum expected dew point of the pipe ambient.
Insulation is required if loop water temperature drops
below the dew point.
Pipe joint compound is not necessary when Teflon
threaded 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
male pipe threads of the fitting adapters. Prevent sealant
from reaching the flared surfaces of the joint.
HKV LArge CommerCiAL
Minimum Bend Radius
5.5" [140mm]
7.0" [178mm]
8.5" [216mm]
WARNING!
WARNING! Do not bend or kink supply lines or hoses.
Figure 2: Supply/Return Hose Kit
Rib Crimped
Length
(2 ft [0.6m] Length Standard)
Note: When anti-freeze is used in the loop, assure
that it is compatible with Teflon tape or pipe joint
compound employed.
Reborde Acanalado
Maximum allowable torque for brass fittings is 30 foot-
pounds [41 N-m]. If a torque wrench is not available, Longitud
(Long. Estándar de 2 pies)
tighten finger-tight plus one quarter turn. Tighten steel
fittings as necessary.
Optional pressure-rated hose assemblies designed
specifically for use with Heat Controller 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.
Refer to Figure 2 for an illustration of a Supply/Return
Hose Kit. External Pipe Thread (EPT) adapters secure
hose assemblies to the unit and risers. Install hose
assemblies properly and check them regularly to avoid
system failure and reduced service life.
CAUTION!
CAUTION! Corrosive system water requires corrosion
resistant fittings and hoses and possibly water treatment.
9
Heat Controller, Inc.
Swivel
Brass
Brass
Fitting
Fitting
EPT
Accesorio
Accesorio
Giratorio
de Bronce
de Bronce
MPT