Tunstall Macon STV Series Manual page 149

Flexible Hoses
Installation:
1. Adhere to allowable radius of bend. (See table below)
2. Verify the installation conditions do not cause torsion of exible. (See gure1 below)
3. If necessary modify the installation in the event that it is not possible to adhere to the allowable radius of bend (see
paragraph 1 below). For example, add an intermediary right angle tting (See gure 2 below).
4. Do not submit the connectors to tension, either from the installation, or as a result of pressure or expansion (see gure
3 below).
4. The braiding of the exible must never be in contact with cement, plaster or all other materials or uids capable of
causing corrosion.
ON INSTALLATION: Avoid absolutely any tension due
to stretching during the course of tightening the
connectors. Do not turn ttings in the hose. Do not twist
hose. Avoid sharp bends, kinking or twisting of the hose
during installation. The ½", 3/4" and 1" hose connection
is a metal to metal seal. The brass mating surfaces
should be smooth and free of debris. The 1-1/4", 1-1/2"
and 2" hose connection use a specially design gasket,
do not install without the gasket. Do not use pipe dope
or tape sealants on the metal to metal or gasket
connection adapters when connecting to the swivel nut.
A. Install and tighten the xed male connector.
B. Remove the swivel adapter from the swivel nut.
Install and tighten the union adaptor.
C. Install and tighten the adapter to the swivel nut.
Use two spanners in order to screw the union together:
One to hold the hexagon of the adaptor.
The other to tighten the nut at the same time.
IMPORTANT : Do not re-screw the xed connector or
adaptor after tightening of the swivel nut ; this will cause
tensioning of the exible with a risk of rapid deterioration
at this point.
On removal, take precautions. If the exible
incorporates two xed connectors, at least one must be
installed on a counter-part tting with a swivel connector
or a union, if not installation is impossible.
INSPECTION: Hci recommends a good maintenance
INSPECTION: Macon recommends a good maintenance
practice and periodic inspections, typically when
servicing other components at the unit or at the
installation site. Check all hoses for small water leaks,
residue, discoloration on the exterior braid and ttings.
If a leak is detected, stop service to the unit and replace
hose immediately. Do not attempt to the repair hose.
Caution: Introduction of chemicals into the system or
unit may cause damage to the inner core of the hose.
Consult a water treatment specialist for chemical
compatibility before using any chemical additives.
Warning: Hoses are designed for hydronic heating and
cooling service only, not for gas.
Tunstall Corporation
118 Exchange Street Chicopee, MA 01013
.
R
Phone: (413) 594-8695 Fax: (413) 598-8109
www.tunstall-inc.com
149
INSTALLATION & OPERATION
INSTALLATION & OPERATION
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