T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
63-4368 2
INTRODUCTION

Device Description

The T7350H is a LONMARK® certified thermostat that provides
networking capability in a LONWORKS® system using a
transformer-coupled Free Topology Transceiver (FTT). See
Fig. 1.
The T7350H communicates with many LONMARK® devices
including the following:
— Other T7350H Commun icating Commercial Thermostat
devices.
— T7300F/Q7300H Commercial Thermostat/Communicating
Subbase.
— Excel 15 S7760A Command Display.
— Excel 10 W7750A,B,C Constant Volume Air Handler Unit
(CVAHU) Controller.
— Excel 15 W7760A, B, C Building & Plant Managers.
— Excel 10 W7751B, D, F, H, J Variable Air Volume Terminal
Unit Controllers.
— Excel 10 W7752D, E, F, G Fan Coil Unitcontrollers.
— Excel 10 W775 3A Unit Ventilator Controller.
— Excel 10 W776 2A,B Hydronic Controllers.
— Excel 10 W7763C, D , E Chilled Ceiling Controllers.

Control Application

The T7350H programmable communicating Thermostat
controls commercial single zone heating, ventilating and air
conditioning (HVAC) equipment through staged and
modulating outputs. The T7350H consists of a two piece
assembly with a thermostat cover and subbase. The
thermostat cover includes the keypad and display for 7-day
programming. Calendar programming is available through a
direct connect PDA (Configuration Tool) or network
(LONSPEC™ with model T7350H) tool configuration. The
subbase includes equipment control, inputs and network
connections. The subbase mounts on the wall and the
thermostat cover mounts to the subbase. In addition, the
T7350H model can communicate local sensor data, schedule
information, master clock operations and accept configuration
and override instructions to or from other devices/tools in a
LONWORKS® network. Fig. 9 shows a typical T7350H
application in a three-stage heat and two-stage cool heat
pump system. For additional hookups, see Fig. 10 through 12.
Fig. 1. Typical T7350H LONWORKS® network diagram.
NOTEBOOK PC
RS-232
SERIAL
PORT
RS-232
SERIAL
PORT
SLTA
SLTA
T7350H
MODEM
MODEM
M22490
EXCEL 10
CVAHU
Back Select
1481216
17 23 30 31 37 44
EXCEL 15
W7760
WALL MODULE
S7760
BUILDING MANAGER
T7350H
EXCEL 10
CVAHU
Back Select
1481216
17 23 30 31 37 44
EXCEL 15
W7760
WALL MODULE
S7760
BUILDING MANAGER
LonWorks BUS
LonWorks BUS