Modine Manufacturing VFV Series Installation And Service Manual page 7

INSTALLATION
Figure 7.1 - Recommended Service Clearance for
Ceiling Mounted Units
UNIT SHOWN 36" (910MM) HORIZONTAL CLEARANCE
FULLY RECESSED RECOMMENDED ON ENDS FOR SERVICE
Piping Installation - Chilled/Hot Water Coils
CAUTION
1. Units not approved for use in potable water systems.
2. Hot water supplied to the hot water heating option must not
exceed 200°F (93°C) temperature or 125 PSIG (862 kPa)
pressure.
3. Do not attempt to reuse any mechanical or electrical
component which has been wet. Such component must be
replaced.
ATTENTION
1. Ces unités ne sont pas approuvées pour l'usage dans des
systèmes à eau potable.
2. La température de l'eau chaude alimentée en vertu de
l'option de chauffage de l'eau chaude ne doit pas dépasser
200 °F (93 °C) ou une pression de 125 lb/po² (862 kPa).
3. Ne tentez pas de réutiliser un composant mécanique ou
électrique qui a été mouillé. Ces composants doivent être
remplacés.
Units without Piping Package (Digits 21-22=NN)
1. Chilled water and hot water coils are supplied, from the
factory, with unions. Field installed piping can be mounted
to the supplied unions with 3/4" female sweat connections.
2. Install shut-off valves in lines to and from each coil to allow
maintenance or replacement of unit without shutting down
and draining entire system (see Figure 7.2 and Figure 7.3).
3. Include a circuit setter in the return line for water flow
regulation.
4. A drain valve (hose bib) should also be provided for each
coil to allow removal of water from the coil if located in an
area subject to freezing.
5. It is advisable to use a pipe line strainer before each coil.
6. Provide adequate pipe hangers, supports, or anchors to
secure the piping system independently of the coil.
[24" (610MM) MINIMUM].
7. See Figure 19.1, Figure 19.2, Figure 21.1 & Figure 21.2 for
supply and return connections .
Units with Piping Package (Digit 21=D or H and 22=D or H)
1. Chilled water and hot water piping packages are supplied
factory assembled and installed to the coil. All piping
packages include the following: control valve, shut-off
valves, strainer, circuit setter, PT ports, and balancing valve
(when 3-way control valve is selected).
2. Piping package terminations are threaded drop ear
connections, and are 3/4" for chilled water and 1/2" for hot
water. Drop ear connections are attached to fixed plates,
and along with the coil provide support for the piping
package.
3. Piping package termination locations are set such that field
piping can be routed through the bottom knock out, back
knock out, or out the side of the unit.
4. See Figure 23.1, Figure 23.2, Figure 25.1 & Figure 25.2 for
supply and return connections.
Figure 7.2 - Typical 2-Way Piping Installation
Figure 7.3 - Typical 3-Way Piping Installation
14-500.7
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