KRUEGER HFH Series, HFHP Series, HFI Series, HFEC Series Maintenance Manual

INSTALLATION,

OPERATION &

MAINTENANCE

Horizontal Basic

Fan Coil Series

HFH, HFHP, HFEC, & HFI

Installation, Operation, & Maintenance for FC Horizontal Basic

Page: 2 of 3

Installation

Installer must be a trained, experienced
service technician.

!

Pressure Check

The complete unit including coil, valve package and
associated piping is shipped pressurized. Use the air valve
to release the pressure. Should there be no pressure,
inspect the unit for possible shipping damage. The unit
must be pressure tested again prior to installation.

Mounting - HFH, HFHP & HFEC ONLY

Each unit has four (4) mounting holes. Rubber grommets
are supplied with each unit. Due to the various installation
conditions, the mounting bolts/rods, steel washers and
nuts are eld supplied.

Level the unit to ensure proper condensate drainage.

Mounting - HFI ONLY

Each unit is provided with four mounting lugs into which
rubber grommets are tted. Fit rods or bolts and use
suitable metal washers and nuts to secure the unit. To
adjust the telescopic frame to the ceiling, remove eight
screws which hold the frame, pull out the telescopic bottom
and adapt it to the ceiling. After exact alignment is made,
re-screw the telescopic frame with hinged access panel to
the unit using the same eight screws (two per side).

Electrical

All electrical connections are to be made in accordance
with the National Electric Code, state and local codes,
bylaws, ordinances or the authority having jurisdiction.
Make all electrical connections inside the electric junction
box by carefully following the wiring diagram.

1. Adhere strictly to the electrical wiring diagram in order

to avoid damage and/or personal injury.

2. When the thermostat and fan switch are eld supplied,

the following are the minimum electrical ratings:

- Thermostat (valve load) = 0.1A @ 115V
(0.05A @ 230V)

- Fan Motor(s) @ full load = 5A @ 115V
(2.5A @ 230V)

Filter – HFHP, HFEC, HFI

The lter is secured with a lter retainer. To install lter, slip
lter into the lter rack and fasten it with the lter retainer.

General Precautions

After completing the installation, recheck the following:

1. The drain pans, fans and motors are clean of all

foreign material.

2. All electric wiring is properly routed, secure and

capped.

3. The lter, where provided, is clean and secured in its

position.

Level the unit to ensure proper condensate drainage.

Piping

All piping leading to the unit must be adequately supported
to prevent excessive stress on the unit’s piping. However,
sufcient free movement is required for thermal expansion/
contraction.

1. Do NOT over-tighten threaded connections.

2. Do NOT overheat sweat connection. Use solder (95/5)

with a melting temperature below 600°F.

3. When the valve package is supplied separately for

eld installation, carefully follow the schematic piping
diagram and installation instructions provided with the
package.

4. All pipes and ttings that extend beyond the drain pan

MUST be insulated.

Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [e-mail] | www.krueger-hvac.com

Initial Start-Up

Chilled/Hot Water Unit

1. Ensure that the main distribution system is operable

(i.e. both supply and return piping are under full
operating pressure).

2. Open the unit’s isolating ball valves (optional) and

observe that no leaks are evident.

3. Open the 2-Way or 3-Way Valve (optional) manually

by moving the lever provided on the valve motor thus
pressurizing the unit’s coil.

4. Remove the cap of the air-vent valve and depress

the needle to release the trapped air. Continue until
only liquid is coming through, then re-cap and secure
tightly.