6: Tubing & Sensor; Installation - On Roof - FAFCO 500 Series Installation Manual

5: Tubing & Sensor Installation—Below Roof (Continued)
STEP 2: CONNECT LOWER ROOF JACK TUBING TO ICM
At the ICM cut the tubing to reach top of water heater. Slide on an escutcheon up
to the ceiling. Screw swivel elbow fitting of valve assembly (fill valve, check valve,
drain valve, and swivel elbow) onto lower right side port of ICM as shown. Cut
tubing to length, insert support liner and push tubing into upper fill valve of valve
assembly. Face valve ports forward with handles to the left and right as shown.
Attach provided Freeze Protection and Fluid Safety label to the fill valve.
STEP 3: PULL UPPER ROOF JACK TUBING
Place tape over the end of the remaining tubing and push up through the left
ceiling hole. Push the end of the 50' roll of roof sensor wire up through the
1/4" hole. In the attic, pull enough tubing and wire to reach the upper roof
jack. Note: Avoid routing sensor wire near any A/C power cables. Connect
the sensor wire to the sensor lead with the provided waterproof wire connec-
tor. Note: There is no positive or negative. Remove the tape and lubricate
tubing with water or silicon. With a helper standing on the roof jack, push
about 4' of tubing up through the rubber grommet. Tubing shall be insulated
with R-2.6 or greater insulation. Use tube supports every 36" to maintain
minimum 1/4" per foot slope for draining, without compressing insulation.
STEP 4: CONNECT UPPER ROOF JACK TUBING TO ICM & ROUTE WIRE
At the ICM cut the tubing to reach the push fitting on the top of the module and slide
on an escutcheon up to the ceiling. Insert a support liner, attach tubing to the push
fitting, and install a collet clip. All interconnecting hot water piping, tubing, and the
final 5 feet of cold water supply pipe shall be insulated with R-2.6 or greater insula-
tion.
Route the roof sensor wire down from the ceiling to the right side of the ICM. Secure
wire with provided zip ties, out of sight behind left tubing.
STEP 5: UPPER AND LOWER TANK SENSORS INSTALLATION
Remove both top and bottom element covers from water heater or solar
storage tank. In both locations, securely insert a sensor behind the in-
sulation, against the inner tank wall. Replace both covers with the sen-
sor leads protruding. Use caution not to cut the wire on the sharp edge.
For single tank systems, insert the top tank sensor inside the piping
insulation on the hot outlet piping to the upper left of the ICM. Ensure
the sensor is properly contacting the metal tubing and is well insulated
for proper temperature readings. This is necessary to readily determine
the system is operating properly and providing solar heated water.
6: Tubing & Sensor Installation—Roof
STEP 1: LOWER ROOF JACK CONNECTION
At the lower roof jack, cut off the tubing 3" above the rubber grommet and insert
a support liner. Firmly hold the tubing just above the grommet and push on an
elbow fitting until completely seated. Install a collet clip and push the tubing down
until the fitting is against the grommet. Insert a support liner into the cut off tub-
ing, insert tubing into collector header fitting, and install a collet clip. Cut tubing
to length and using a support liner and collet connect to elbow fitting. NOTE:
Black UV resistant tubing, fittings, and expansion reservoir on roof do not require
insulation.
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Dual Tank Single Tank