Installation (contd.) | 11 |
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WATER CONNECTIONS
Reversible Inlet/Outlet Connection
The MiniMax CH heater is factory assembled with right side inlet/outlet water connections. The inlet/ outlet header can be reversed for left side water connections without removing the heat exchanger.
Reversing Water Connections Disassembly
Tools needed:
1/4 in Nut Driver
9/16 in. Socket and Wrench 1/2 in. & 9/16 in. Open Wrench
Screw Driver(s) - (Flathead & Phillips)
1.Remove the inspection plates.
2.Disconnect all wires from the
NOTE
There is no reason to remove the
3.Disconnect the pressure switch wiring.
4.Disconnect the thermostat thermister leads from the control board.
5.Exchange the in/out header with the return header. Replace the heat exchanger tube seals with new seals provided in the
6.Install the temperature sensing bulb by passing the wires through the hole provided on the left side of the brace panel. Route wires through the support bracket.
7.Reconnect all the high limit wires. Reconnect the pressure switch wiring. Route the wires through the same hole as the thermostat sensor wires and reconnect thermister to the board.
8.Reinstall the inspection plates.
INSULATING THE HIGH LIMITS
When Reversing Heads on the MiniMax CH Heater
On the MiniMax CH heater there is insulation installed by the factory on the return head side of the heaters. This insulation is there so that if the heads are reversed in the field, during initial installation of the heater, the reflected heat from the flue collector will be insulated from the high limits.
Return head in position before removal.
This view shows the insulation installed by the factory.
Return head removed and new tube seals installed. Now ready to accept the installation of the main head.
Lift the installation to allow the main head to be installed. When head is placed into position, release the insulation; it will now shield the high limits from the heat produced by the flue collector.
Rev. B | P/N 472128 |
