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Raypak

Raypak Gas-Fired Heaters

Models 206A, 266A, 336A and 406A. These heaters hand out their own 24 VAC on a seven-pin connector and expect you to switch it. Send voltage the other way and the control board is destroyed — Raypak says so in as many words.

The seven-pin remote connector

The heater supplies power out through a seven-pin connector to either a toggle switch or the switch contacts of a third-party remote. Your contact simply makes or breaks the circuit the heater has already energised. Raypak requires the supplied seven-pin connector be used for both two-wire and three-wire arrangements.

ConductorFunction
BLU24 VAC out from the heater
BLK/ORNReturn for a Pool call
ORN/BLKReturn for a Spa call
Harness conductors on the two-wire arrangement. The blue conductor is the heater's own 24 VAC feed.
The heater's blue 24 VAC conductor switched by a module dry contact into either the Pool or Spa return conductor on the seven-pin remote harness.
The heater energises the loop. The module only decides whether it is closed.

Two-wire, on-off control

Use this where only one heating function is wanted. Because the module becomes the thing that decides when heat is needed, what you set on the heater depends on whether the module or the heater is measuring water temperature.

If the controller...Set the heater to
Has its own temperature sensorPOOL or SPA mode with the temperature at the highest setting available, so the heater never becomes the limit
Has no sensor of its ownPOOL or SPA mode at the setpoint actually wanted, for example 102 F for a spa

Turning remote operation on

  1. 1

    Restore power with the wiring complete

    The seven-pin connector should be made up and plugged in before this step.

  2. 2

    Hold UP and DOWN together for 3 to 5 seconds

    That toggles remote operation. The second line of the display alternates even when the unit is showing No Demand.

  3. 3

    Confirm the display reads Remote

    The heater indicates that a remote system is in control by showing Remote on the display. That is the handover confirmed.

  4. 4

    Prove the contact

    Call for heat from the app and confirm the heater begins its ignition sequence, then release the call and confirm it shuts down.

Cable

  • Remote wiring must be run in its own conduit, and must not run parallel to high voltage lines.
  • Under 30 ft: stranded, minimum 22 AWG, 600 V, twisted with a 1.5 to 2.5 in lay, jacketed.
  • Over 30 ft: minimum 20 AWG, 600 V, same lay, shielded and jacketed.
  • Maximum cable length 200 ft (61 m).

When it does not fire

SymptomWhere to look first
Contact closes, nothing happensRemote operation not activated. Hold UP and DOWN for 3 to 5 seconds.
Display never shows RemoteSame cause — the heater is still in local control.
Board dead after wiringVoltage was fed into the remote terminals. This is the failure Raypak warns about.
Heater will not exceed a temperatureIts own setpoint is acting as the limit. Raise it if the module owns regulation.
Nothing works and the model is millivoltMillivolt heaters have no remote capability.

Sources