Envision Peripherals IM1609 08, IM1609 10 Control Tables for Optional Versatec Microprocessor

ENVISION CONSOLE INSTALLATION MANUAL

Envision Console Controls

prevent loss of refrigerant charge and a low suction tem- perature thermistor for freeze sensing. Upon a continuous

30-second measurement of the fault (immediate for high pressure), compressor operation is stopped.

Control Tables for Optional Versatec Microprocessor

Logic Board DIP Switch Settings

Switch	OFF	ON
SW1 - 1	Test - Selected timings sped up to facilitate troubleshooting	Normal - Standard timings
SW1 - 2	Loop - Closed loop freeze sensing setting (15°F)	Well - Open loop freeze sensing setting (30°F)
SW1 - 3	Commercial - Enables NS features when TA32U02 thermostat is used	Normal - Standard thermostat operation
SW1 - 4	IO Display* - Enables Input/Output display on external LED board	Normal* - Unit status display
SW1 - 5	Configures board for 2-speed compressor without fan	Configures board for 2-speed compressor with fan

Normal Control Timing

Blower off delay	30 seconds
Compressor on delay	10 seconds
Short cycle delay	5 minutes
Miniumum compressor on time	2 minutes (except for fault condition)
High pressure fault recognition delay	Less than 1 second
low pressure fault recognition delay	30 seconds
Freeze sensing fault recognition delay	30 seconds
Condensate overflow fault recognition delay	30 seconds
Low pressure fault bypass delay	2 minutes
Freeze sensing fault bypass delay	2 minutes
Power on delay	5 minutes

Operational Logic

Mode	Inputs	Fan	Comp	RV
Htg	Y	ON	ON	OFF
Clg	Y,O	ON	ON	ON
Fan	G	ON	OFF	OFF

Test Control Timing

Blower off delay	5 seconds
Compressor on delay	2 seconds
Short cycle delay	15 seconds
Miniumum compressor on time	5 seconds (except for fault condition)
High pressure fault recognition delay	Less than 1 second
low pressure fault recognition delay	30 seconds
Freeze sensing fault recognition delay	30 seconds
Condensate overflow fault recognition delay	30 seconds
Low pressure fault bypass delay	0 seconds
Freeze sensing fault bypass delay	0 seconds
Power on delay	15 seconds
Fault off time	5 minutes

Diagnostic Modes

	LED	Current Fault Status	Inputs	Outputs
		SW1 - #4 On, SW2 On	SW1 - #4 Off, SW2 Off	SW1 - #4 Off, SW2 On
Drain		Drain pan overflow	Y	Compressor
Water Flow		FS thermistor (loop <15°F, well <30°F)	G	FAN
High Press		High pressure >600 PSI	O	O
Low Press		Low pressure <40 PSI	ES	ES
Air Flow		Not used	NS	NS
Status		Not used	LS	LS
DHW Limit		Not used	Not used	Not used
HWD		SW2 in the On position	Off position	On position

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