Qmark CHPR25 - Compact Freeze Protection Heater - Manual (Page 2)

GENERAL INFORMATION
Model CFP25 is designed, tested and Listed by Intertek
Testing Services NA, Inc. (ETL/C-ETL Listing Mark) to comply
with the following standards:
USA: ANSI/UL 1995 titled “Heating and Cooling Equipment”
Canada: CSA C22.2 No. 236-05, third edition titled “Heating
and Cooling Equipment”
This unit is specifically designed and approved for freeze pro-
tection installations into a concealed space and other areas not
readily accessible. Typical applications include plenums and
associated plenum spaces (such as areas above a finished
ceiling that contain utilities), crawl spaces, water closets and
other concealed locations where freeze protection is required.
Note: rated static pressure is 0.20” sp . This unique heater is
provided with a set of normally open contacts that can supply a
line voltage signal to an alarm device if desired to provide early
notice if for any reason the heater cycles off on its built-in over
temperature safety control. This can provide an early notifica-
tion to allow for repairs BEFORE a freeze up occurs
Minimum Installation Clearances (See Figure 1)
SIDES, TOP AND BOTTOM
0 IN.
REAR: 7-3/8 in. (187 mm)
FRONT: 24 in. (610 mm)
Note: To access field wiring and heater controls requires the
bottom panel door open as shown in Fig. 3. Consideration
must be given to provide access to this panel.
MOUNTING
This heater can be mounted using the mounting bracket
provided with the heater or it may be mounted using the 1/2” -
13NC threaded hole provided on the top of the heater.
Mounting The Heater With Bracket
1. Remove the bracket from the heater and position to the
desired mounting location (see Figure 2). Securely attach to
the building structure using appropriate hardware (supplied
by others).
2. Attach heater to bracket using the keyhole slots in bracket
and bolts provided with heater. Position heater as desired
and tighten bolts.
Mounting The Heater With Threaded Rod
1. A 1/2”-13NC threaded hole is provided in top of heater
enclosure for mounting the heater if desired. Optional
mounting brackets are available from your electrical dis-
tributor for use with this heater. If one of these brackets is
to be used, refer to the instructions provided with the
bracket.
2. If a threaded rod is used, it must be securely attached to
the building structure using appropriate brackets, washers,
nuts and lock washers to secure the heater properly and
prevent it from falling (see Warning No. 6, page 1).
3. When installing threaded rod into heater, make sure rod is
inserted approximately 1” into heater to assure all threads
are engaged. In addition, a 1/2” nut should be used as a
jam nut to prevent the heater from rotating during opera-
tion.
Connecting the Power
1. To connect the power to the heater, simply remove the
three screws from the bottom of the unit. This allows the
cover to be removed, providing access to the electrical
wiring and connectors. (See Fig. 3)
2. Attach the cable connectors to the unit and slide 10 gauge
wire or appropriate size for amperage marked on the
heater nameplate and length of run per NEC (National
Electrical Code) through the cable connector. Pull enough
of the wire through the connector to work with when mak-
ing the connections.
3. Connect the wire to the power terminal block located in
the base of the heater (See Figures 4 and 5).
Note: This unit is provided with two 1/4” male quick connect
terminals (see Wiring Diagram, Figure 4) marked as Alarm
1 and Alarm 2, to allow for an external alarm to be con-
nected to the unit if desired. This option can provide notifi-
cation if the heater overheats and cycles on the thermal
over-temperature limit. Each terminal (Alarm 1 or Alarm 2)
will provide 120 volts to ground. Connection to both Alarm
1 and Alarm 2 terminals will supply line voltage (208 or
240V) to the alarm.
4. Close the wiring compartment and replace the screw and
turn on the power at the main service.
SIDE VIEW
MOUNTING
LOCATION
M
INTAKE
1 / 2 3 / 4
3 / 4
in., in. (2)
(13 mm, 20 mm)
14 in. (356 mm)
12 1 / 2 in.
(318 mm)
FRONT VIEW
14 in.
(356 mm)
7 3 / 8 in.
(187 mm)
5 1 / 2 in.
(140 mm)
13 in.
(330.2 mm)
(0 mm)
24 in.
(610 mm)
0 in.
1 in.
(45 mm)
MINIMUM DISTANCE
TO WALL
MINIMUM
DISTANCE
FROM
DISCHARGE
TO ANY
OBJECT
Figure 1 Dimension Data
WARNING
TURN OFF ALL ELECTRICAL POWER TO UNIT BEFORE
PERFORMING ANY MAINTENANCE OR SERVICE ON UNIT.
(UNLESS SPECIFIC TESTS REQUIRE ELECTRICAL
SUPPLIES.) FAILURE TO TAKE THIS PRECAUTION MAY
RESULT IN PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK.
!
CEILING JOIST
WASHER
3 / 8 " DIAGONAL
LAG BOLT
BRACKET
Figure 2
Double-Screw Mounting
Figure 3
REMOVE SCREW TO OPEN DOOR
CAUTION
TO PREVENT DAMAGE TO THE ALARM DEVICE, IT MUST BE
SUITABLE FOR VOLTAGE AS NOTED ABOVE.
!
CAUTION
TWO EACH, MIN. 3/8” DIA. MOUNTING BOLTS (OR LAG
BOLTS), FLAT WASHERS, LOCK WASHERS, AND NUTS AS
NECESSARY MUST BE USED SO THE HEATER WILLNOT FALL
- SEE WARNING NO. 6.
!