Lochinvar TISUN SPS0500 - Manual (Page 6)

6
3
Technology, installation and commissioning
Clamp ring screw connections
■ Cut the copper pipe to length and deburr.
■ First, slide the clamp ring nut over the pipe, then slide the
clamp ring.
■ Insert the prepared pipe into the screw connection until its
stop is reached.
■ Tighten clamp ring nut by hand.
■ Use open-ended wrench to tighten clamp ring screw
connection (approx. 33 Ft lb), re-tighten if necessary.
■ When tightening the clamp ring screw connection, use two
wrenches–using one wrench to prevent the pumping station
from turning.
Flat seal screw connections
■ All pre-fitted solar station screw connections are firmly
tightened in the factory so that they do not need to be
retightened.
Torque levels when tightening flat seal screw connections
using AFM 34 flat seals, s = 2mm.
– 3/4" screw connection 26 Ft. lb
– 1" screw connection 40 Ft. lb
– 1 1/4" screw connection 66 Ft. lb
– 1 1/2" screw connection 96 Ft. lb
Operation, multi-function ball valve and
check valve
■ The forward flow ball valve must be open for filling, flushing
and bleeding solar systems with a filling and flushing pump.
The return ball valve should be closed.
■ Both flow checks should be opened in order to drain the
solar system (thermometer handles in 45° position).
■ The two mult-function ball valves must be fully open in
order to operate the solar system (turn the red and blue
thermometer handles counter-clockwise until the stop is
reached).
Figure 4-1 Forward flow multi-functioning instruments
SETTING FOR OPERATIONS,
FILLING, FLUSHING, DRAINING
FLOW CHECK CLOSED
BALL VALVE OPEN
DRAINING
FLOW CHECK OPEN
BALL VALVE 1/2 OPEN
SERVICE
BALL VALVE
CLOSED
Figure 4-2 Return multi-functioning instruments
SETTING FOR OPERATIONS
FLOW CHECK CLOSED
BALL VALVE OPEN
DRAINING
FLOW CHECK OPEN
BALL VALVE 1/2 OPEN
SERVICE, FILLING FLUSHING
BALL VALVE CLOSED
SL-PS Installation & Operation Manual