Mars 33222 User Manual

Relays & Sequencers

MARS SERIES 332

COMPONENT

33243

Schematic

33243

SPST - 1 switch

33232

(1)DPST and

(1)SPST - 3 switches

Contact Rating Chart

RES DUTY

VAC AMPS FLA LRA VA

120 30 23 84 672 240 30 23 60 960 277 23 23 42 775 480 12.5 5 10 400

33246

DPST - 2 switches

(2)SPST - 2 switches

33233

(2)DPST - 4 switches

33222

PILOT

Electric Heat Sequencers

A new simple method for selecting and replacing electric heat sequencers with only five basic controls. Replace sequencers in almost any existing system.

Sequencer selection:

A. Determine the number of circuits to be switched.

(Electrical rating of auxiliary switch same as main switch.) When more than one (1) sequencer is required the sequencers are to be wired in series with the last switch in each sequencer energizing the control circuit of the next sequencer.

B. Select from the chart the sequencers needed for

the number of circuits to be switched. These sequencers may be wired in series to allow sequencing of virtually any number of heating elements and fans.

If the sequencers control the fan/blower circuit, the first switch (M1-M2) of each sequencer must always control the fan. This provides a fan interlock to insure that the fan will remain on until all elements are de-energized.

Features:

• Solid S t ate depe ndability

• Replaces Honeywell and White-Rodgers

• Ambient rated from 20°F. to 160°F.

• Used on both separate blower and element and combination blower and element systems

• Total 24 Volt control

• Standard double quick-connect terminals for combination fan and element systems

• Full-load-rated auxiliary contacts

• 7.2 KW combination fan and element rated contacts (23A. resistive, 7A. motor load)

• Non-positional

• Voltage and ambient self compensating positive temperature coefficient (PTC) heater elements

• Individually packaged with wiring diagrams for up to seven element furnaces.

• UL and CSA listing available

Switch Switch No. 1 Switch No. 2 Switch No. 3 Switch No. 4 (2)

SWITCH TIMING: MIN-MAX IN SECONDS

REPLACES Sequence (Terminals (Terminals (Terminals (Terminals

NO. OF MARS KLIXON FIRST ON LAST ON M1 / M2) M3 / M4) M5 / M6) A1 / A2)

SWITCHES NO. NO. LAST OFF FIRST OFF ON OFF ON OFF ON OFF ON OFF

1 33243 6000AOM (1) 1-60 1-45 2 33246 6000EOM (1) 1-60 1-45 1-60 1-45 2 33222 51172-22 No. 1 No. 2 1-24 45-75 30-70 1-40 3 33232 51172-32 No. 1, No. 2 No. 3 1-24 45-75 1-24 45-75 30-70 1-40 4 33233 51172-33 No. 1, No. 2 No. 3, No. 4 1-24 45-75 1-24 45-75 30-70 1-40 30-70 1-40

C-68

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