First Co HBQB -3, HBQB -2.5, HBQB -4 User Manual

NOW EQUIPPED WITH MULTI-FUNCTION MICRO-PROCESSOR

HBQB Series

Vertical / Horizontal / Counterflow (Except 60HBQB)
Combo Air Handler

Cooling or Heat Pump / Hot Water Heating
1-1/2 through 5 tons, up to 143,000 BTUH Heating

Description :

The "Combo" air handler converts a properly sized gas or oil-fired water heater into a highly efficient space
heating appliance that can heat your home as well as provide hot water. Compared to other heating systems,
combo heaters offer high efficiency, greater installation flexibility, cost less to install, and are much easier to
service.
The HBQB Series incorporates a Multi-function Micro-processor that not only reduces the number of
components but adds a number of standard system funstions that would not normally be available, such as an
automatic pump timer, and blower delay, just to name a few. The HBQB air handler in th eonly product avail­able with these high quality features! Cooling efficiencies up to 15 SEER.

First Co's customer is ultimately responsible for confirming which fan coil models are compatible
with selected outdoor unit(s) and which expansion valves (if any) are required. To determine certified
indoor/outdoor matches, go to:www.firstco.com or contact the factory

Proper water heater sizing is required to ensure adequate hot water supply for both domestic use and space
heating. Contact the factory for sizing information.

NOW WITH 2-SPEED FAN OPERATION

(High Speed-Cool, Medium Speed-Heat)

FEATURES:
Heating Cycle

1. Automatic pump timer: The pump operatesfor sixty seconds every six hours in order to purge the water

from the hot water coil and piping (the pump timer cycle is skipped while the compressor is operating).
Note: State of MA, .248 CMR code of the state of MA requires a pump timer. (60 seconds every 6 hours)

2. Blower-on delay: On a call for heat, the hot water coil is preheated for 45 seconds before the blower
energizes.

3. Blower-off delay: Blower continues to operate for 20 seconds after thermostat
is satisfied, extracting more heat from the heating coil and increasing heating
performance.

Cooling Cycle

1. Blower-off delay: Blower continues to operate for 45 seconds after thermostat

is satisfied, extracting more cooling from the cooling coil and maximizing cooling
efficiency.

Optional features

board but each option requires an optional field installed switch. (Contact factory)

1. Freeze protection: circuit board has terminals for optional freeze protector switch.
Freeze protector energizes the circulating pump if water coil temperature falls
below 40 degrees.

2. Factory or field installed R22 or R410A TXV's (non-bleed type).

(logic for the following options is built into the micro-processor circuit

Additional features

1. 4-way airflow

2. Built-in circulating pump, air purge valve, and easy access hot water check valve.

3. Blower door safety switch (excep

4. Compatible with all major brands of split condensing units and heat pumps

5. Slide out hot water coil assembly for easier service

6. Fully insulated galvanized steel cabinet

7. High efficiency copper tube/aluminum fin heating and cooling coils

8. Primary and secondary drain connections on cooling coil

9. Factory installed filter

FIRST CO. - P.O. Box 270969 - Dallas, Texas 75227 - Ph. [phone] - Fax [phone] - www.firstco.com

(kit required for counterflow - 60HBQB not approved for counterflow installation)

t 60HBQB)

HBQB Series

COOLING or HEAT PUMP
HOT WATER HEATING

Efficiency:

The HBQB series air handler is the latest state-of-the-art air handler for hot water heating. Depending on the
water heater efficiency and the condensing unit used, heating efficiency can exceed 90% and cooling effi­ciency can exceed 14 SEER (depending on the selected outdoor unit). Cooling coils have either piston type
metering devices or R22 or R410A TXV’s and are circuited for cooling or heat pump operation.

First Co's customer is ultimately responsible for confirming which fan coil models are compatible
with selected outdoor unit(s) and which expansion valves (if any) are required. To determine certified
indoor/outdoor matches, go to: www.firstco.com or contact the factory.

Components:

Each air handler includes a high efficiency cooling coil, a separate hot water coil, circulating pump, air purge
valve, anti-thermosyphon check valve, blower door safety switch (except 60HBQB), 120V blower motor, throw
away filter, and 24V transformer.

Cabinets:

Cabinets are fully insulated and painted with an attractive, baked-on powder coating (light gray).

Installation:

No modification is required for vertical or horizontal (right-to-left) airflow. A horizontal drain pan is factory
installed for right-to-left airflow and can be re-positioned within the cabinet to offer left-to-right airflow. An
optional counterflow conversion kit is available for downflow installations.

Operation:

When space heating is needed, the wall thermostat energizes the circulating pump which circulates hot water
from the water heater to the hot water coil in the air handler. As the blower motor forces cool return air from
the home over the hot water coil, the air absorbs heat from the hot water. This warm air (105 to 110 degrees)
is then circulated throughout the duct system and into the home. The water loses only about 15 degrees of
temperature while it circulates through the coil and is then returned to the water heater to be reheated.

Accessories:

Accessories include counterflow conversion kits, TXV expansion valve kits, and freeze protector.

4-WAY AIRFLOW

-2-

(60 HBQB NOT CONVERTIBLE TO

DOWNFLOW)

(SEE NOTE NEXT TO BLOWER

DATA TABLE)