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88.88
Range Down
J1
1 2 3 4
0843P-0593
Fig. 79 — Comefri Electronic Cometer
The basic instructions for setting up a Comefri
eter to display the correct CFM and output are as follows:
0-10VDC to OEM controller (See Fig. 79 and 80.)
1.
Set Dip Switch #3 in on Position enables flow monitoring.
2.
Look up the type and size of the specific blower in Fig. 80.
1. Comefri is a registered trademark of Comefri Group.
CFM
Range Up
Enter OK
J2
SW3
SW2
SW1
Yellow LED
Green LED
-
+
Pressure
Connec on
Electronic Com-
1
3.
Please note that PR series units use ANPA blowers for "Air-
foil" blowers and ANPL blowers for backwards inclined
"BI" blowers.
4.
Press the "OK" switch to access the "Flow Rate". Using the
"UP" and "DOWN" buttons set the "Flow Rate" to 1000,
3000, 5000, 9999, or 30.00 based on the CFM of the blower.
Press "OK". This figure must match maximum AMS range
on the "AMS SETTINGS" screen of the OEM.
5.
Use the "Up" and "Down" buttons to set the first digit of the
Blower Types K-factor. Press "OK".
6.
Use the "Up" and "Down" buttons to set the second digit of
the Blower Types K-factor. Press "OK".
7.
Use the "Up" and "Down" buttons to set the third digit of the
Blower Types K-factor. Press "OK".
8.
Use the "Up" and "Down" buttons to set the fourth digit of
the Blower Types K-factor. Press "OK".
9.
Use the "Up" and "Down" buttons to set the place value of
the ".". Press "OK".
10. The Cometer should now be set.
11. Place label near Cometer that states "K-factor may require
adjustment during test and balance."
12. Field calibration can be achieved by adjusting the K-factor
upwards or downwards as needed to match test and balance.
5000
-Factor Example for a THLZ 250
Blower with Comfri supplied
K-Factor of 173.75
173.3
ANPA BLOWERS ARE USED AS BACKWARDS INCLINED
"BI" BLOWERS ON PR UNITS
ANPA Blowers K-Factor
ANPA 12
76.74
ANPA14
101.82
ANPA 16
131.45
ANPA 18
145.89
ANPA 20
196.80
ANPA 22
249.99
ANPA 25
313.82
ANPA 28
423.99
ANPA 32
518.98
ANPA 36
667.15
ANPA 40
864.71
ANPA 44
974.88
ANPA 49
1271.22
ANPA 55
1594.92
Fig. 80 — Blower K-Factors
Hot Water Heating Control
The control valve for units equipped with hot water coils is to be
field provided and installed. The control valve will also require
field provided power (not from unit). The control signal for the
control valve will be provided by the OEM controller by wiring
the valve input signal to UO-6 (0 to 10V signal). Valve selection is
to be determined by power requirements, pipe size, and water flow
and temperature.
Digital Scroll Compressor
62X units (3-18 tons) have a digital scroll compressor. Two-stage
units (10-18 tons) will have a digital scroll compressor on the lead
circuit and a fixed speed scroll compressor, with hot gas bypass,
on the second circuit. The digital compressor's capacity is
50
0962I-4912 Rev.D
Cometer Setup
06/26/2017
Page 1 of 3
LWF
JW
DWG____ CHK____
ANPL Blowers K-Factor
ANPL 10
37.30
ANPL 11
45.48
ANPL 12
56.28
ANPL 14
75.91
ANPL 16
105.36
ANPL 18
135.13
ANPL 20
165.56
ANPL 22
203.52
ANPL 25
264.70
ANPL 28
345.20
ANPL 32
429.61
ANPL 36
531.05
ANPL 40
651.78
ANPL 44
814.89
ANPL 49
941.62
ANPL 55
1180.64
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