Nibco RHP-1, Installation And Operation Manual

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Installation and Operation Manual Radiant Heat Panel
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RHP-1&2 0511
It is required to install an in-line expansion tank in the supply from heat source. This allows for
contraction and expansion of the fluid.
The objective in filling the RHP and related equipment is to purge air from the piping network.
To allow proper filling and purging, it is necessary to install fill and purge valves as seen in the
example schematic on page 9. The fill and purge valves are not included with the RHP. Allow suf-
ficient time and flow for air bubbles to be flushed from the system. An air eliminator (not included)
will facilitate the final purging of air. The RHP has no ability to deal with air locks, which impede
the performance of the system and can cause the pump to fail. Installer will need two hoses to
complete the following procedure. Hoses must each have a female connection to attach to ap-
propriate valves. (Installer takes responsibility and liability to meet all local environmental codes
for discharging fluids).
Purging Instructions
1. Turn off power to RHP and fill heat source with fluid. Open all isolation and drain valves
(except the one between the fill and purge valves).
2. Close all individual loop isolation (balancing) valves on manifold except one. Connect hose to
water source outlet and the other end to fill valve. Connect another hose to purge valve and to a
suitable discharge (such as a large bucket) and begin filling. Flow will be in reverse of normal.
3. When flow appears free of air bubbles, close the open loop and move to the next loop - thus
filling and purging each loop in turn.
Note:
If using a glycol mix, pump in the mix from a large container and purge back into the same con-
tainer.
Locate room thermostat. Use a suitable 3 conductor wire and connect the N,L, and Signal terminals
on the thermostat to the corresponding terminals on the RHP wiring block. The room thermostat
should be located in an area representative of the most commonly used space, between 50 and
60 inches above the floor, away from doors, curtains, draughts, direct sunlight, air registers, fire-
places, or any other form of heat, which may influence the control.
If you desire to use the RHP to signal a boiler to fire, use the auxilary contacts. This pair may be
connected to a boiler and the circuit will close when heat is called for by the panel.
Finally, connect 110V power to RHP.
To reduce heat transfer from RHP to room, insulate with standard grade pipe insulation. Do not
insulate electric motors.
8. Fill and Purge
Installation Instructions
9. Wiring
Running the circulator
dry voids
warranty. Ensure the
system is filled
before operating the
circulator.
10. Pipe Insulation