Honeywell LP907A Instructions D'installation
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Honeywell LP907A Instructions D'installation

Honeywell LP907A Instructions D'installation

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APPLICATION
The LP907 Airstream Insertion Thermostat is a direct-acting,
single-pipe, bleed-type controller with a rigid element. The
LP907B (no longer available) was the same as the LP907A
with lockout capability. It included a pneumatic switching relay
for lockout during summer (cooling) operation. When
replacing the LP907B, use an LP907A and an RP670A
Switching Relay.
SPECIFICATIONS
Model: Direct-acting, bleed-type controller.
Dimensions: See Fig. 1.
Temperature Ratings:
Operating Range: 40°F to 140°F (4°C to 60°C).
Storage (Maximum Safe): 150°F (66°C).
Throttling Range (adjustable internally): 10 to 70°F (6 to 39K).
Setpoint Range(s): 40°F to 140°F (4°C to 60°C);
Dial Front: 40°F to 90°F (4°C to 32°C),
Dial Back: 90°F to 140°F (32°C to 60°C).
Setpoint Adjustment: Dial under cover.
Element: 18-3/4 in. (476 mm) long x 3/8 in. (10 mm) diameter
invar rod and seamless brass tube.
Maximum Safe Air Pressure: 20 psig (138 kPa).
Air Connections: Push-on barb for 1/4 in. (6 mm) poly tubing.
Mounting: Insertion with locknut on insertion coupling.
Accessories:
14002913-002 External Restriction [0.007 in. (0.2 mm)].
301572A00767 Calibration Adjustment Key.
309387 Filter Assembly.
CCT2085 Gage Adapter.
BEFORE INSTALLING
Use with a 0.007-inch (0.17 mm) diameter restriction such as
the 14002913-002 Filter/Restriction Cartridge or the integral
restriction in the MP516B and C Damper Operators.
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
Airstream Insertion Thermostat
INSTALLATION INSTRUCTIONS
When mounting with an immersion well, use 107408 Heat
Conductive Compound in the well to improve response.
NOTE: For further information concerning wells, see Form
68-0040 Immersion Wells and Compression Fittings
for Temperature Controllers.
1-1/16 (27)
7/8 (22)
HONEYWELL
3-7/16
(87)
1/8 NPT
1/2
2-1/4 (57)
(13)
Fig. 1. Dimensions of LP907A in in. (mm).
INSTALLATION
The LP907A can be mounted in any position. See Fig. 2
through 4 for mounting configurations.
OPERATION
Due to its bleed-type construction and wide throttling range,
the LP907A provides submaster-type operation (most often
low-limit control) in a normal unit ventilator system. See Fig. 5
through 7 for typical hookups.
LP907A
18-3/4 (476)
5/8
11/32
(16)
(9)
3/8 NPT
3/4 DIAM. HOLE
(MINIMUM)
NUT
REQUIRED
SPACERS (2)
FOR MOUNTING
DUCT WALL
2
(51)
M7996A
95- 1612EF

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  • Page 1 Maximum Safe Air Pressure: 20 psig (138 kPa). INSTALLATION Air Connections: Push-on barb for 1/4 in. (6 mm) poly tubing. The LP907A can be mounted in any position. See Fig. 2 Mounting: Insertion with locknut on insertion coupling. through 4 for mounting configurations.

  • Page 2: Important

    BLP. CAUTION In Fig. 6, the RP670 switching relay is connected directly to the main. The relay action locks out the LP907A during the Equipment Damage Hazard. summer (cooling) cycle when main pressure is 14 psig Can damage the device beyond repair.

  • Page 3: Operational Check

    VP514 (NOT FURNISHED) D.A. LP907A VP512A VALVE M5450 RP418 E-P Fig. 7. Typical operation of duct mounted LP907A. RELAY WIRE IN PARALLEL WITH FAN MOTOR Operational Check LP907A 1. Ensure BLP ahead of the restriction (or MP516B) MP516A equals mainline pressure. If it does not: OPERATOR a. Adjust the room thermostat in order to obtain equal...
  • Page 4 NOTE: Calibration procedures are the same for all models the gage tee and device base). with the exception that the LP907B (or LP907A used 2. If results do not improve, check the pneumatic line with an RP670) cannot be calibrated unless the relay restriction to determine whether there is proper airflow.

  • Page 5: Caractéristiques Techniques

    Encombrement : voir la Fig. 1. Températures nominales : Le LP907A peut être installé dans n’importe quelle position. Gamme de service : 4 à 60 °C (40 à 140 °F ). Voir les Fig. 2 à 4 pour observer différentes méthodes Température d’entreposage (max.

  • Page 6: Fonctionnement

    Parce qu’il s’agit d’un thermostat de purge et qu’il offre une économiques qui permettront de tirer du système le bande proportionnelle large, le LP907A peut prendre la relève meilleur parti et la plus grande efficacité possibles. du thermostat (et fonctionner dans la plupart des cas à la manière d’un régulateur à...

  • Page 7: Vérification De L'étalonnage

    MF5448B en amont du réducteur (ou du MP516B) est égale à la pression de la canalisation principale. Si ce n’est pas le Fig. 6. Fonctionnement type d’un LP907A au sein d’un cas : système de chauffage-refroidissement a. Ajuster le thermostat d’ambiance pour obtenir une (ventilateur autonome).

  • Page 8: Dépannage

    By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...

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