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BEFORE INSTALLATION
The LP916A-C Pneumatic Remote Bulb Thermostats
("Thermostats") provide proportional control of heating or
cooling in induction units, fan coil units, and unit ventilators. A
wide throttling range model is available for duct discharge
control of heating or cooling coils and mixed air dampers.
Observe the following warning when installing this device.
WARNING
Do not rotate the Thermostat control shaft more than
two revolutions clockwise from the original position as
received. Rotating the shaft more than two revolutions
from the original position can cause permanent
damage to the Thermostat.
This warning is also on a removeable tag (Fig. 1)
attached to the Thermostat and should remain
attached until the system is ready to start up.
Use care to prevent the capillary and sensing bulb
from being dented or damaged in any way during
installation. Also avoid any sharp bends or kinks in the
capillary during installation.
Copyright © 1990 Honeywell Inc. • All Rights Reserved
LP916A-C Pneumatic Remote
Bulb Thermostats
INSTALLATION INSTRUCTIONS
CAUTION
DO NOT
ROTATE SETPOINT SHAFT
MORE THAN TWO COMPLETE
CLOCKWISE REVOLUTIONS
FROM ITS 'AS RECEIVED'
CONDITION - THE DEVICE
H O N E Y W E L L
MAY BE PERMANENTLY
DAMAGED
Fig. 1. LP916 caution label.
C4646
95-5559
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Related Manuals for Honeywell LP916A-C
Summary of Contents for Honeywell LP916A-C
- Page 1 FROM ITS 'AS RECEIVED' CONDITION - THE DEVICE H O N E Y W E L L MAY BE PERMANENTLY DAMAGED C4646 Fig. 1. LP916 caution label. Copyright © 1990 Honeywell Inc. • All Rights Reserved 95-5559...
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Page 2: Installation
LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS INSTALLATION Integral Mounting Bracket Model Mount Thermostat in location where mounting screws are readily accessible, setpoint knob easily reached, and scale visible; preferably from top of unit through The LP916 integral mounting bracket model includes two access hatch or from front of unit when front panel Tinnerman nuts, two sensing bulb hangers, and two No. -
Page 3: Duct Mounting
LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS Snap sensing bulb into position. Mount Thermostat (Fig. 5 or 6). Before connecting air, leave main line disconnected for about one minute to clear and dry tubing. Air connections are 1/4-in. push-on sharp-barb type and are labeled M and B for Main and Branch. -
Page 4: Mounting Kit Model
LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS Place capillary tubing in bulb holder channel and pinch Mounting Kit Model top edges of holder together at each segment as shown in Figure 9. The LP916 mounting kit model is shown in Figure 12. This model can be either panel mounted or mounted in a terminal unit using a bracket. -
Page 5: Bracket Mounting
LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS Mount Thermostat from rear of panel and secure on front with scale plate and screws (Fig. 14). CAUTION Be careful not to change position of control shaft when removing shipping stop and attaching setpoint knob and scale plate to Thermostat. - Page 6 LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS CAUTION Be careful not to change position of control shaft when removing shipping stop and attaching setpoint knob and scale plate to Thermostat. Assemble Thermostat, mounting bracket, and scale plate as shown in Figure 17.
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Page 7: Checkout And Testing
LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS CHECKOUT AND TESTING WARNING be varied from 0 psi (0 kPa) to full main pressure Do not rotate the Thermostat control shaft more than within the rated throttling range, the Thermostat is two revolutions clockwise from the original position as operating properly. - Page 8 LP916A-C PNEUMATIC REMOTE BULB THERMOSTATS LP916B Switchover Point Adjustment Back off switchover spring adjusting nut (Fig. 18) until flush with stud. Calibrate per Steps 1 through 5 of LP916A and C calibration. Increase branchline pressure by rotating control shaft clockwise. Allow enough time (up to three minutes) for branch pressure to build up.