24F590 (120V) and 24F591 (240V) Merkur Heated Circulation Kit
Installation
NOTE: See your separate heater manual, supplied, for heater installation and electrical requirements.
NOTE: Apply pipe sealant (19) to all
NOTE: On pumps with a 3/4 npt fluid inlet, use bushing (12) to allow connection of the swivel adapter (13).
1.See FIG. 3. Assemble the bushing (12, if needed) and swivel adapter (13) to the pump inlet. Attach the suction hose kit (16) to the adapter.
2.Screw one branch of the
3.Assemble the knob (20), reducer nipple (9), bushing (6), and the male end of the swivel (8) to the back pressure valve (5). Screw the swivel (8) onto the middle threads of the
4.Screw the 90° swivel (3) onto the heater (4) fluid inlet.
5.Attach the heater hose (25) as follows:
a.On pumps with a 3/8 npt fluid outlet, screw the female end of the swivel (17) onto the pump out- let fitting. Connect the heater hose (25) between the swivel (17) and the 90° swivel (3) at the heater inlet. The bushing (18) is not needed.
b.On pumps with a 3/4 npt fluid outlet, screw the female end of the bushing (18) onto the pump outlet fitting. Connect the heater hose (25) between the bushing (18) and the 90° swivel (3) at the heater inlet. The swivel (17) is not needed.
c.On pumps with a 1/2 npt fluid outlet, connect the heater hose (25) between the pump fluid outlet and the 90° swivel (3) at the heater inlet. The swivel (17) and bushing (18) are not needed.
6.Screw the nipple (21) into the heater (4) fluid outlet. Screw the fluid filter kit (22) inlet swivel onto the nip- ple.
7.Ground the pump as explained in your separate pump manual.
8.Connect the fluid supply line to the fitting at the fluid filter outlet.
9.Connect the fluid return line (R) to the reducer nip- ple (9) at the inlet of the back pressure valve (5). Use the back pressure valve to adjust fluid pressure in the circulation system.
10.Use the
11.See your separate pump and heater manuals for operation, maintenance, repair, and parts informa- tion.
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