OPTIONAL PARTS
Electric valve package kits
The electric valve package kits are furnished completely soldered and leak tested at the factory. Four(4)
solder connections are required to complete the installation of the valve package into the system (two at the
coil supply and return connections and two at the supply and return run outs).
Installation
1. Clean all connections before assembly with fine sandpaper. A good grade solder flux will help ensure
a proper bond. A general purpose 50/50 solder is recommended. Do not silver solder or braze
the valves or copper fittings in this kit. A chill block, or equivalent, must be used to prevent leaks in
the factory connection or overheating the valve.
2. Position the valve package on the unit by moving the kit piping slightly. Do not try to move the coil
connections.
3. The 2″×4″indentation in the back of the secondary drain pan on the units is provided for the supply
and return runouts if they are brought up from below the pan. We recommend removing or covering
the secondary drain pan on these units before soldering the coil connections as hot solder or the torch
flame could damage the pan. Be careful not to burn wire insulation during soldering.
4. Caution: The electric valve and gate valves are to be in the open position, ball valves in the
closed position while soldering. Do not move the valve handles until the tubing has cooled for
three (3) minutes.
5. A hydrostatic test on all piping is recommended after all connections are complete.
6. All piping not over the secondary drain pan must be well insulated to prevent sweating. There is an
0.840 O.D. condensate drain connection on the unit drain pan suitable for a 1/2″plastic pipe fitting (by
others).
7. Field wiring must be in accordance with local codes and/or the National Electrical Code. Wiring should
be routed in such a manner to prevent the possibility of condensate dripping from the valve package
piping onto the electrical conduit.
Caution
To prevent electrical shock, disconnect electric power to
system at main fuse or circuit breaker box until installation is
complete.
Page 36
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