Lochinvar SPS0250, PS1000 Technology, installation and commissioning, Flat seal screw connections

SL-PS Installation & Operation Manual

3 Technology, installation and commissioning

Clamp ring screw connections Figure 4-1Forward flow multi-functioning instruments

■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).

SETTING FOR OPERATIONS,	DRAINING	SERVICE
FILLING, FLUSHING, DRAINING	FLOW CHECK OPEN	BALL VALVE
FLOW CHECK CLOSED	BALL VALVE 1/2 OPEN	CLOSED
BALL VALVE OPEN

Figure 4-2Return multi-functioning instruments

SETTING FOR OPERATIONS	DRAINING	SERVICE, FILLING FLUSHING
FLOW CHECK CLOSED
	FLOW CHECK OPEN	BALL VALVE CLOSED
BALL VALVE OPEN
	BALL VALVE 1/2 OPEN

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