Carrier 37AG Installation Instructions And Parts List

Duct Pressure Powered, Wall-Mounted Thermostat for use with
System-Powered 35BB,BC; 37AG,AH,AJ; 37CL,CM,CN and 37HS Air Terminals
GENERAL
Thermostat Type —
Wall thermostats are designated
as direct acting (DA) and reverse acting (RA). A DA ther-
mostat will output an increasing pressure to the volume con-
trol as the sensed temperature rises. An RA thermostat will
output a decreasing pressure to the volume control as the
sensed temperature rises.
Thermostat Packages —
stat packages available, each complete with decorative cover.
The dual thermostat has both an RA and a DA thermostat
mechanism in a single case with cover. Refer to Fig. 1 for
location of identification label. Wall thermostats can be ap-
plied as shown in Table 1.
Interconnecting tubing must be ordered separately. The maxi-
mum amount of tubing allowed between volume controller
and thermostat is 100 ft of 1 ⁄
4
ing. This tubing is available in 250-ft rolls (Carrier Package
No. 35BB900172).
The dual RA/DA thermostat is designed for use in air sys-
tems which deliver both cooling air and heating air (37CL,C-
M,CN and 37HS). A special changeover valve must be used
in this application. Package No. 37CM900152, containing
the changeover valve and installation instructions, must be
ordered separately.
UNIT
35BB,BC*
37AG,AH,AJ*
37CL,CM,CN
37HS
*35BB,BC and 37AG,AH,AJ applications must be used with an amplifying regulator or amplifier tee. Consult Carrier dealer for package number.
NOTE: These thermostats will only modulate the system-powered air valve in the controlled unit and interconnected slave units. A separate control
will be needed for any auxiliary equipment.
Fig. 1 — Wall Thermostat Dimensions (RA Thermostat Shown)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 3 PC 201
Tab 6a

Installation Instructions

There are 3 wall thermo-
-in. OD FR (fire retardant) tub-
Table 1 — Wall Thermostat Applications
MODE THERMOSTAT TYPE
Cooling
Cooling
Heating
Cooling/Heating
Cooling
Heating
Cooling/Heating
Catalog No. 533-715 Printed in U.S.A.
Accessory Wall Thermostat
The wall thermostat must be located properly for satis-
factory control. The thermostat must be installed where it
will be exposed to free air circulation but will not be ex-
posed to drafts. Do not install thermostat on exterior walls,
in direct sunlight, or where it will be affected by lamps, com-
puters or other heat producing appliances, or people. Locate
the thermostat 4 to 5 ft above the floor. Ensure there are no
hot or cold water pipes or ducts behind the thermostat.
1. The thermostat mounts into a standard, field-supplied 2-in.
x 4-in. electrical junction box. Two #6-32 screws are pro-
vided with the thermostat. A 10-in. long piece of
ID Tygon tubing with an adaptor fitting to
tubing is also provided. (Two tube/adaptors are supplied
with the dual RA/DA thermostat.)
2. Remove the cover of the thermostat by carefully depress-
ing the wire clip on each side of the case. See Fig. 1.
PART NO.
RA HL08TE005
DA HL08TE006
RA HL08TE005
Dual RA/DA HL08TE004
DA HL08TE006
RA HL08TE005
Dual RA/DA HL08TE004
Form 37HS-5SI
35BB,BC
37AG,AH,AJ
37HS, 37CL,CM,CN
LOCATION
INSTALLATION
1 ⁄
4
PACKAGE NO.
37CM901002
37CM901012
37CM901002
37CM900992
37CM901012
37CM901002
37CM900992
Pg 1 7-91 Replaces: 37C-5SI
5 ⁄ -in.
32
-in. OD FR