State Standard Systems - Manual (Page 22)

22
safetY equipment
For protection against excessive pressures in the collector
loop a pressure relief valve is integrated into the solar
pump station. Drain tubing must be installed in the valve
outlet so that any discharge will exit only within 6 inches
above, or at any distance below the structural floor. Be
certain that no contact is made with any live electrical part.
The discharge opening must not be blocked or reduced in
size under any circumstances. Excessive length, over 15
feet, or use of more than two elbows can cause restriction
and reduce the discharge capacity of the valve.
Do not connect tubing directly to discharge drain unless a
6” air gap is provided. To prevent bodily injury, hazard to
life, or damage to property, the relief valve must be allowed
to discharge fluid in quantities should circumstances
demand. If the discharge pipe is not connected to a drain
or other suitable means, the fluid may cause property
damage.
Wall mountinG the solar pump station
attention: TO PREVENT DAMAGE TO PROPERTY,
THE LOCATION OF INSTALLATION MUST BE DRY,
LOAD-CARRYING AND FROST-PROOF TO PREVENT
MATERIAL DAMAGE TO THE INSTALLATION.
1. Choose the position to install the solar pump station
next to the storage tank (noting that the tank solar loop
inlet (from collector) and outlet (to pump) are on the
right side of the tank)
2. Remove the temperature gauges (C,E) by grasping the
frame and pulling straight forward.
3. Remove the front cover (D) of the solar station.
4. Remove the retainer clips behind the isolation ball
valves (J, Q) with a flat head screw driver to free the
mounting plate from the station (see Figure 22).
Figure 22.
Note: To aid in later assembly, while each leg of the station
assembly is removed from the bracket, an extension leg of
¾” copper tubing can be attached to the bottom threaded
connector using the ¾” female NPT sweat adaptor provided.
5. Line the mounting plate up level on the wall and mark
the drill holes. (Holes will be 5 ¾” (146 mm) apart). Drill
the two holes with a 3/8” drill bit and mount the plate
with either the masonry mounting hardware or drywall
hardware provided.
6. After the mounting plate is secured to the wall replace
the solar pump station back cover, insert the retaining
clips half way onto the mounting retaining stud (see
Figure 23) behind the isolation ball valves (J, Q), push
the assembly onto the bracket mounting stud and push
the clip down into place. Ensure assembly is properly
locked into place.
Figure 23.
7. Connect the stainless steel corrugated hose to the
safety group (N). Do not forget to insert the seal.
8. Choose the position for the expansion tank bracket
on the wall beside the solar pump station. Fasten the
bracket to the wall with the enclosed hardware (masonry
or drywall).
9. Unscrew the tank connector to separate the two halves.
The top half should be pushed onto the mounting
bracket and the lock ring tightened. The bottom half
should be attached to the ¾” threads on the expansion
tank. Do not forget to insert the seal.
10. Make sure that you are able to reach the drain valve
and all access panels when the solar station is in place.
This will make it easy to service the solar station.
NOTE: The tank connector allows you to isolate the
expansion tank from the solar circuit (Figure 24). When
the nut is unscrewed the valves in each half of the tank
connector are automatically closed tightly by the integrated
springs. Each side remains closed until the two halves are
screwed back together and the valves are forced open.
The expansion tank should not be connected to the system
until it has been flushed and charged.
FLOW CLOSED
Figure 24.
pump station installation