Product data

60
2. All water connections and electrical knockouts
must be in the compressor compartment corner
post as to not interfere with the serviceability of
unit. Contractor shall be responsible for any
extra costs involved in the installation of units
that do not have this feature.
K. Solid-State Permanent Split Capacitor (PSC) Fan
Control Board:
1. Airflow selection shall be accomplished via
3 jumper switches on the PSC control board.
Actual airflow shall be indicated by the cfm LED
with each 100 cfm being represented by one
flash of the LED.
2. Airflow shall be automatically maintained (±5%)
by the PSC motor regardless of external static
pressure up to its maximum output capacity.
3. A jumper shall allow selection of a special dehu-
midification mode, which reduces airflow in
cooling by 25% to increase the latent capacity
of the unit. A terminal shall be provided on the
control board to allow an external humidistat to
activate dehumidification mode.
L. Remote Service Sentinel (Complete C or Deluxe D):
1. Solid-state control system shall communicate
with thermostat to display (at the thermostat)
the unit status, fault status, and specific fault
condition, as well as retrieve previously stored
fault that caused unit shutdown.
2. The remote service sentinel allows building
maintenance personnel or service personnel to
diagnose unit from the wall thermostat.
3. The control board shall provide a signal to the
thermostat fault light, indicating a lockout.
4. Upon cycling the G (fan) input 3 times within a
60-second time period, the fault light shall dis-
play the specific code as indicated by a
sequence of flashes. A detailed flashing code
shall be provided at the thermostat LED to dis-
play unit status and specific fault status such as
over/under voltage fault, high pressure fault,
low pressure fault, low water temperature fault,
condensate overflow fault, etc.
5. Units that do not provide this remote service
sentinel shall not be acceptable.
M. Special Features:
1. Cupronickel coaxial water-to-refrigerant heat
exchangers are available for higher corrosion
protection.
2. The sound attenuation (mute) package consists
of high technology sound attenuating materials
strategically applied to the cabinet, in addition
to the standard system, to further dampen
sound.
3. Extended range is available for units operating
with entering water temperatures below dew
point. Extended entering water temperatures
range from 20 to 120 F.
4. A two-way motorized water control valve shall
operate in conjunction with the compressor to
shut off or turn on water to the unit.
5. Water circuit options shall provide internally
mounted 2.5 or 3.0 gpm per ton automatic
flow regulating valves.
6. The permanent split capacitor (PSC) high-static
blower motor shall increase unit capacity
through the use of a high-static blower motor.
7. Aquazone™ Thermostat Controls:
a. Programmable multi-stage thermostat offers
7-day clock, holiday scheduling, large backlit
display and remote sensor capability.
b. Programmable 7-day light-activated thermo-
stat offers occupied comfort settings with
lights on, unoccupied energy savings with
lights off.
c. Programmable 7-day flush-mount thermo-
stat offers locking coverplate with tamper
proof screws, flush to wall mount, dual point
with adjustable deadband, O or B terminal,
and optional remote sensor.
d. Programmable 5-day thermostat offers
2-stage heat/2-stage cool, auto changeover,
5-minute built-in compressor protection,
locking cover included.
e. Non-programmable thermostat offers 2-
stage heat/2-stage cool, auto changeover, 5-
minute built-in compressor protection, lock-
ing cover included.
8. Loop controller with six stages (2 stages for
heating and 4 stages for heat rejection) is avail-
able.
9. The filter rack (1-in.) enhances the filtration sys-
tem of the water source heat pump.
NOTE: Filter rack does not include filters.
10. Fire-rated hose kits include a fixed MPT on one
end and a swivel with an adapter on the other
end. Hose kits can be either stainless steel or
galvanized.
11. Ball valves (brass body) shut off and balance
water flow. Valves are available with memory,
memory stop, and pressure temperature ports.
12. Y strainers (bronze body) are “Y” type configu-
ration with a brass cap and stainless steel
strainer screen. Maximum operating pressure
rating of strainers is 450 psi.
13. Solenoid valves (brass body) provide slow oper-
ation for quiet system application.
14. Hose kit assemblies include a ported ball valve
with pressure temperature (P/T) plug ports and
flexible stainless steel hose with swivel and
nipple. Return hose includes a ball valve,
preset measure flow (gpm) with two P/T ports,
flexible stainless steel hose with a swivel and
nipple.
Guide specifications (cont)