Carrier 50KQL-1PD manual Field-installed accessories, 50KQL Control Options Table

50KQL CONTROL OPTIONS TABLE

OPTION			CONTROLLER	THERMOSTAT	FUNCTIONS	TRANSFORMER
	A		Complete C	MCO	—	50 VA
	B		Deluxe D	MCO	NIGHT LOW LIMIT 2-HR OVERRIDE	75 VA
	C		Complete C	ACO	—	50 VA
	D		Deluxe D	ACO	NIGHT LOW LIMIT 2-HR OVERRIDE	75 VA
	P		Complete C with PremierLink™	LINKAGE	DDC SYSTEM	50 VA
	R		Complete C	REMOTE	—	50 VA
	S		Deluxe D	REMOTE	NIGHT LOW LIMIT2-HR	75 VA
					OVERRIDE
	LEGEND
ACO	—	Auto Changeover
DDC	—	Direct Digital Controls
MCO	—	Manual Changeover

Field-installed accessories

Carrier’s line of Aquazone™ thermostats (used with remote thermostat units) are both attractive and multi- functional, accommodating stand-alone water source heat pump installations.

Programmable 7-day thermostat — Offers 2-stage heat, 2-stage cool, auto changeover, 7-day programmable with copy command, 4 settings per day, fully electronic, 24 vac, backlit LCD, keypad lockout, no batteries required, 5-minute compressor protection, NEVERLOST™ memory, 3 security levels, temperature display in degrees F or C.

Programmable 7-daylight-activated thermostat — Offers same features as the 7-day programmable thermostat and includes occupied comfort settings with lights on, unoccu- pied energy savings with lights off.

Programmable 7-dayflush-mount thermostat — Offers same features as the 7-day programmable thermostat and includes locking coverplate with tamper proof screws, flush to wall mount, holiday/vacation programming, set point limiting, dual point with adjustable deadband, O or B termi- nal, and optional wall or duct-mounted remote sensor.

Programmable 5-day thermostat — Offers 2-stage heat, 2-stage cool, auto changeover, 5-minute built-in compres- sor protection, locking cover included, temperature display in degrees F or C, keypad lockout, backlit display, 5-1-1 programming, O or B terminal, dual set point with adjust- able deadband, configurable display, self-prompting pro- gram, 4 settings per day.

Non-programmable thermostat — Offers 2 heat stages, 2 cool stages, auto changeover, 5-minute built in compressor protection, locking cover included, temperature display in degrees F or C, keypad lockout, large display, back-lit dis- play, O or B terminal, dual set point with adjustable dead- band, backplate with terminals.

Aquazone system control panel includes a pre- programmed, easy to use, Carrier Comfort Controller set up for a WSHP system.

•Coordinates, monitors, and controls all WSHP units and ancillary equipment including cooling towers, boil- ers, and system pumps.

•50RLP model nomenclature is used to customize the panel to control all WSHP system requirements.

•Panel can be ordered to include 2, 4, 6, or 8 stages of system heat rejection.

•Panel can be ordered to include 2, 4, 6, or 8 stages of system heat addition.

•Panel can be ordered with unique WSHP zone operation capabilities for stand alone systems (i.e., non-communicating) to control 10 or 18 zones of WSHP units.

•Panel can be ordered to control variable frequency cool- ing tower fan operation.

•System pumping operation can be configured for start/ stop, lead/lag, or variable frequency pump operation.

•Direct Digital Control compatible using the Carrier Comfort Network (CCN) and WSHP units utilizing PremierLink CCN controllers.

Fire-rated hoses are 2 ft long and have a fixed MPT on one end and a swivel with an adapter on the other end. Hose kits are provided with both a supply and return hose and can be either stainless steel or galvanized. Five sizes are available (1/2, 3/4, 1, 11/4, 11/2 in.).

Ball valves (brass body) used for shutoff and balancing water flow. Available with memory, memory stop, and pressure temperature ports. UL-listed brass body, ball and stem type with Teflon seats and seals. Five sizes are avail- able (1/2, 3/4, 1, 11/4, 11/2 in.).

Y strainers (bronze body) are “Y” type strainers with	a
brass cap. Maximum operating pressure rating	of

450 psi. Strainer screen made of stainless steel. Available with blow down valves. Five sizes are available (1/2, 3/4, 1, 11/4, 11/2 in.).

Solenoid valves (brass body) offer 3.5 watt coil, 24 volt, 50/60 Hz, 740 amps inrush, .312 amps holding. Slow operation for quiet system application. Five sizes are available (1/2, 3/4, 1, 11/4, 11/2 in.).

Hose kit assemblies provide all the necessary compo- nents to hook up a water-side system. Supply hose includes a ported ball valve with pressure temperature (P/T) plug ports, flexible stainless steel hose with swivel and nipple. Return hose includes a ball valve, preset auto- matic balancing valve (gpm) with two P/T ports, flexible stainless steel hose with a swivel and nipple, balancing valve, and low-pressure drop water control valve.

Remote sensors are available for Aquazone flush mount thermostats. Sensors are available for wall (wired and wire- less) or duct mounted applications.

PremierLink™ accessories are available to provide a fully integrated WSHP DDC system. Accessories include supply air temperature sensors (with override and/or set- point adjustment), communicating room sensors, CO2 sen- sors (for use in demand control ventilation), and linkage thermostats (to control multiple units from one thermostat).

7