Page 12 – Bulletin 30-21
5D valve, the pilot valve body MUST be supported when tight-
ening the 1/4” flare connection. Failure to do either of the
above may cause leaks or valve damage.
Wiring
Check the electrical specifications of the coil to be sure that
they correspond to the available electrical service. See page 5
for typical wiring schematics for single compressor systems.
The 1/2” BX conduit connection of junction box on the coil of
Heat Reclaim Valves may be ro tat ed to any po si tion by loos-
en ing the coil screw. Valves with four-wire dual volt age coil
have a wiring di a gram decal (see diagram above) on the coil
housing or brack et. This il lus trates which wires to con nect for
either 120, 208, or 240 volt operation. Wir ing and fus ing (when
used) must com ply with prevailing local and na tion al wir ing
codes and or di nanc es.
TRANSFORMER SELECTION
TEMPERATURE RATINGS
Replacement Part Kits for
8D, 12D, 16D, 8D-SC, 12D-SC, 16D-SC, 8D-HP,
12D-HP, S8D, S12D, S16D, S8D-HP, S12D-HP, 10G
The parts kit for the 3-Way Heat Reclaim Valves include the
piston assembly. This requires separate kits for Bleed “B” and
Non-Bleed “C” versions of the 3-Way Valves.
CAUTION: If you are replacing the internal parts on an older
“B” style valve with split piston rings, you must use the existing
piston and piston rings. Do not use the new piston assem-
bly supplied with your parts kit. (See page 13.)
4. In the event that full liquid line pressure is available
and the bottom port is NOT leaking, then it is necessary
to replace the Pilot Control valve.
B. If the Pilot Control functions satisfactorily, then the ther-
mostatic expansion valve should be checked. Various
causes could be the reason for operation difficulties: push-
rod packing leak, seat leak, diaphragm failure, and several
others. For a complete service analysis on thermostatic
expansion valves, refer to Bulletin 10-11.
General Information
INSTALLATION PRECAUTIONS
1. Do not attempt installation of the valve before pumping the
entire system down.
2. The solenoid coil must not be energized unless it is installed
on the valve. To do so would cause coil to overheat and
burn out.
3. The solenoid coil should be fused in accordance with local
codes.
4. If a service valve is installed ahead of a solenoid valve, it
should be closed during service procedures. Do not use
a solenoid valve as a safety shutoff while making
repairs to the system. Be sure there is no liquid in the
line between the service and solenoid valves when
they are in the closed position that could create dan-
gerous hydraulic pressures.
5. Do not twist the valve assembly by pulling or pushing on
the enclosing tube or coil assembly.
6. Do not carry a coil assembly or complete valve by the coil
leads. This could damage the coil and cause a coil burnout.
Do not carry the valve by the pilot tube. This could cause
damage to the flare (SAE) joint creating an external leak.
7. Electrically ground the valve body. Typically this is done
through the fluid piping or the electrical conduit.
8. Before energizing the valve, verify that the supply voltage
and frequency matches the solenoid coil marking.
Soldering Precautions
Solder connections on Sporlan Heat Reclaim Valves are cop-
per. Any of the com mon ly used types of solder are sat is fac to ry
with these materials. Regardless of the type of solder used, it
is important to avoid over-heating the valve. Extreme care
should be taken when brazing connections to avoid
damage to internal syn thet ic parts. The torch tip should
be large enough to avoid prolonged heating of the con nec-
tion during the brazing op er a tion. Overheating can also be
min i mized by di rect ing the flame away from the valve body.
Cool body thoroughly after making each con nec tion. As
an extra precaution, a wet cloth may be wrapped around the
valve body during the soldering operation.
CAUTION: When installing 1/4” flare pilot line connections,
flare body MUST be supported with another wrench. On the
BLUE YELLOW
RED BLACK
BLUE BLACK
RED YELLOW
120-V
208-V
240-V
Coil
Kit
24v/50-60c 120v/50-60c 240v/50-60c
Transformer
Rating
Volt-Amperes
Current Amperes For 100% of
Rated MOPD
of Valve
In-rush Holding In-rush Holding In-rush Holding
MKC-1 1.90 0.63 0.39 0.14 0.19 0.09 60
MKC-2 3.10 1.40 0.60 0.26 0.31 0.13 100
Basic
Valve Type
Coil
Type
Ambient
Temp.
Ratings
Max. Fluid
Temp.
Rating
Min. Fluid
Temp.
Rating
8D, 12D, 16D (12-03 & after),
8D-HP, 12D-HP, S8D, S12D,
S8D-HP, S12D-HP, 10G
MKC-1
120°F
49°C
240°F
116°C
-40°F
-40°C
16D (12-03 & before), 180 MKC-2
120°F
49°C
240°F
116°C
-40°F
-40°C
Suitable for use with all Halogenated refrigerants.
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